Treid to post this in the tech forum but it says only moderators can post there?? whats up with that ?? :? Anyway, anyone heard about the quick fix for the slipper clutch for us drag racers. My clutch took a dump last night and I don't want to just replace it. I want to get it fixed right before I put another one in. I heard there was a fix for it and know someone that knows something about it but just wondered if anyone here has heard anything. Thanks! Rich

How in the world did your clutch take a dump already?

The clutch in the 10R is not a slipper clutch. It is designed to limit the effects that hi compression engines have regarding rear wheel lock up or hop during engine breaking (back shifting from hi rpm). A slipper clutch, well known to drag racing, is designed to give limited slip during hard launches to prevent wheelies and excessive rear tyre spin. There is also a lockup clutch, but we are not here to talk about that. I am sure there are others that can add to this and it might help some others understand the differences and I am always looking to learn more myself. Anyway, what have you done to your clutch that it warrents attention? Burnouts, hard launches, wheelies...? JB

Anyway, now that we have all the technical crap out of the way. I am sure most everyone else knew was I was getting at, it's not a normal clutch. It's not meant for drag racing. I drag race with it. It was doing fine, but went out last night. I know a few people who have had the same issue but just replace it with out fixing it. I don't want to do that. I want to set it up for what I do with it. I have only made about 20 hard launching passes on the clutch.

"The clutch in the 10R is not a slipper clutch" Your gonna get hammered on this one Johnnyboy! It is in fact a slipper clutch! 8)

"The clutch in the 10R is not a slipper clutch" Your gonna get hammered on this one Johnnyboy! It is in fact a slipper clutch! 8) That's what I thought they were calling it. But that's not the point of the thread so quit jacking my thread!!!! :D I just want to know if anyone has heard of a cure.... :cry:

The clutch in the 10R is not a slipper clutch. It is designed to limit the effects that hi compression engines have regarding rear wheel lock up or hop during engine breaking (back shifting from hi rpm). A slipper clutch, well known to drag racing, is designed to give limited slip during hard launches to prevent wheelies and excessive rear tyre spin. There is also a lockup clutch, but we are not here to talk about that. I am sure there are others that can add to this and it might help some others understand the differences and I am always looking to learn more myself. Anyway, what have you done to your clutch that it warrents attention? Burnouts, hard launches, wheelies...? JB Bullshit dragbikes use a clutch set-up called a slider.The Zx10 does in fact have a slipper style clutch notice the word slipper VS slider.

But that's not the point of the thread so quit jacking my thread!!!! :D Jacking your thread? Fuck me, the literacy rate around here has taken a tumble!

But that's not the point of the thread so quit jacking my thread!!!! :D Jacking your thread? Fuck me, the literacy rate around here has taken a tumble! Thread jacking - changing the subject or soul purpose of a thread to argue your own irrelavant point. There it is, spelled out in black and white for you over seas fuckers. :D

This Quote is taken from Cycleworld's Liter Bike Shootout in the section titled "At the Strip," regarding quarter-mile performance. "(Regarding the Kawasaki) We initially experienced some clutch slippage, but after changing the friction plates and adding some free play, we had no further troubles. - Cycle World June 2004, pg 57 I wonder if the friction plate problem is a factory defect, or a warrantable fix. Also, how would I know if I have this problem? Do I go down to the raceway and see if I can run 9-10 second 1/4s?

This Quote is taken from Cycleworld's Liter Bike Shootout in the section titled "At the Strip," regarding quarter-mile performance. "(Regarding the Kawasaki) We initially experienced some clutch slippage, but after changing the friction plates and adding some free play, we had no further troubles. - Cycle World June 2004, pg 57 I wonder if the friction plate problem is a factory defect, or a warrantable fix. Also, how would I know if I have this problem? Do I go down to the raceway and see if I can run 9-10 second 1/4s? Good question, I have not even thought about taking my bike back in to the dealer. I just don't think they will do anything with it.

But that's not the point of the thread so quit jacking my thread!!!! :D Jacking your thread? Fuck me, the literacy rate around here has taken a tumble! Thread jacking - changing the subject or soul purpose of a thread to argue your own irrelavant point. There it is, spelled out in black and white for you over seas fuckers. :D LAFF. :lol:

"The clutch in the 10R is not a slipper clutch" Your gonna get hammered on this one Johnnyboy! It is in fact a slipper clutch! 8) That's what I thought they were calling it. But that's not the point of the thread so quit jacking my thread!!!! :D I just want to know if anyone has heard of a cure.... :cry: It was the point! Your problem is you are using a sportbike with a "slipper clutch for drag racing and it is not designed for that purpose, As for "Jacking your Thread" You put it on the board for all to read and respond, Each person will interpret your question in there own way, In my opinion if you want to use the wrong bike for that purpose then you will need to redesign the clutch and while your at it maybe you should consider a few other mods like a longer swing arm and maybe lowering the bike, I could go on but I think that the smarter guys around here have already got the point :!: :)

"The clutch in the 10R is not a slipper clutch" Your gonna get hammered on this one Johnnyboy! It is in fact a slipper clutch! 8) That's what I thought they were calling it. But that's not the point of the thread so quit jacking my thread!!!! :D I just want to know if anyone has heard of a cure.... :cry: It was the point! Your problem is you are using a sportbike with a "slipper clutch for drag racing and it is not designed for that purpose, As for "Jacking your Thread" You put it on the board for all to read and respond, Each person will interpret your question in there own way, In my opinion if you want to use the wrong bike for that purpose then you will need to redesign the clutch and while your at it maybe you should consider a few other mods like a longer swing arm and maybe lowering the bike, I could go on but I think that the smarter guys around here have already got the point :!: :) Did anyone ever see the smiling face in the thread I think he was just trying to be funny. Anyways if you are telling me that this bike was not meant for drag racing then why does the mags post quarter mile times. I think any bike could be used for anything you want to use it for. He just prefers drag racing. I have one to and although I do not drag mine as much as his I do get a little concerned that a bike with less than 20 passes on it is already having clutch issues. Makes me think twice about it anyways. I think he already has a solution for the clutch but I think he was also trying to get some other opinions as well. Peace out, Garceeya

"The clutch in the 10R is not a slipper clutch" Your gonna get hammered on this one Johnnyboy! It is in fact a slipper clutch! 8) That's what I thought they were calling it. But that's not the point of the thread so quit jacking my thread!!!! :D I just want to know if anyone has heard of a cure.... :cry: It was the point! Your problem is you are using a sportbike with a "slipper clutch for drag racing and it is not designed for that purpose, As for "Jacking your Thread" You put it on the board for all to read and respond, Each person will interpret your question in there own way, In my opinion if you want to use the wrong bike for that purpose then you will need to redesign the clutch and while your at it maybe you should consider a few other mods like a longer swing arm and maybe lowering the bike, I could go on but I think that the smarter guys around here have already got the point :!: :) Did anyone ever see the smiling face in the thread I think he was just trying to be funny. Anyways if you are telling me that this bike was not meant for drag racing then why does the mags post quarter mile times. I think any bike could be used for anything you want to use it for. He just prefers drag racing. I have one to and although I do not drag mine as much as his I do get a little concerned that a bike with less than 20 passes on it is already having clutch issues. Makes me think twice about it anyways. I think he already has a solution for the clutch but I think he was also trying to get some other opinions as well. Peace out, Garceeya I saw the smiley! didn't you see mine? as for what he chooses to use his bike for! I don't have a problem with him using it for garage ornament! just suggesting some mods to make him faster! and for why "they" post 1/4 times, It's to give you info as to the performance of the bike, I have seen Volkwagens at the drags but that does not mean they were intended for it! :lol: :D Notice the happy face!

"The clutch in the 10R is not a slipper clutch" Your gonna get hammered on this one Johnnyboy! It is in fact a slipper clutch! 8) That's what I thought they were calling it. But that's not the point of the thread so quit jacking my thread!!!! :D I just want to know if anyone has heard of a cure.... :cry: It was the point! Your problem is you are using a sportbike with a "slipper clutch for drag racing and it is not designed for that purpose, As for "Jacking your Thread" You put it on the board for all to read and respond, Each person will interpret your question in there own way, In my opinion if you want to use the wrong bike for that purpose then you will need to redesign the clutch and while your at it maybe you should consider a few other mods like a longer swing arm and maybe lowering the bike, I could go on but I think that the smarter guys around here have already got the point :!: :) Don't get so defensive there cowboy. I didn't ask anyone to figure out what kind of clutch I/we have. I don't care if they call it the gripper, the slipper the trapper the stopper or the goofy clutch...THATS NOT THE POINT! I am asking if anyone else who uses the bike for what I do has this issue and what did you do to solve it. I already know this bike is not setup for what I am using it for, and I already knew the clutch would not last, again NOT THE POINT. I am definitely not asking for your opinion on how to make my bike handle better on the track and even though you seem to be some kind of drag racing champion of the world with all your irrelavant info, thanks, but I can handle my bike just fine as I proved last night. Yeah you could go on and on but I could care less about your 2 cents on stuff I already know for myself and don't need your advice on. Hence the reason I asked a certain question on a clutch and not the broad question of HOW TO SET-UP FOR DRAG RACING. Now do you have any idea of how to redesign the clutch for drag racing? If not, you need not respond, unless you have some more lame ass comments. Thanks drive through.

You go there Drag Star! I certainly did not mean to tread on your personal thread :)

You go there Drag Star! I certainly did not mean to tread on your personal thread :) Whatever dude..... :roll:

Can't we all just get along?

GARSZX10R> Anyway, when you take the bike back to the dealer be sure you tell them you've been drag racing the bike, then go outside so you don't hear them laughing. Wait about an houre before you return, they should be down to mind histaria then, but do repeat the question though, it may cost you another houre. All kidding aside, 20 hard launches is good, depending on how hard you leave and how much you actually use the clutch when you launch. You know the bike isn't made for drag racing and fibre plates do get used up, the steal plates get burned and sometimes warp, these are consumables... Order a full set of fibres and inspect the steals, riding it at the strip, you'll need likely need more of them. Poky> I am an old school rider and have been re-educated and have learned the error of my ways, it seems the term Slipper Clutch is now used for both applications of preserving rear wheel traction under full power launches and hi rpm back shifts. I stand corrected and apologize to anyone I may have pissed off with my former post. Peace, JB

Ok, so what about friction plates and if it is in our best interest to get them replaced? I have heard of people getting the factory to warranty them. has anyone tried this?

GARSZX10R> Anyway, when you take the bike back to the dealer be sure you tell them you've been drag racing the bike, then go outside so you don't hear them laughing. Wait about an houre before you return, they should be down to mind histaria then, but do repeat the question though, it may cost you another houre. All kidding aside, 20 hard launches is good, depending on how hard you leave and how much you actually use the clutch when you launch. You know the bike isn't made for drag racing and fibre plates do get used up, the steal plates get burned and sometimes warp, these are consumables... Order a full set of fibres and inspect the steals, riding it at the strip, you'll need likely need more of them. Poky> I am an old school rider and have been re-educated and have learned the error of my ways, it seems the term Slipper Clutch is now used for both applications of preserving rear wheel traction under full power launches and hi rpm back shifts. I stand corrected and apologize to anyone I may have pissed off with my former post. Peace, JB You all need to understand this boy had an 03 R6 that I could not even count how many times that thing has been to the track and how many miles are on that thing and never once did the clutch let go. I to have an 02 R1 and have done many launches on it as well. Now we both have new ZX10's and he is already having clutch issues. I guess Yamaha just knows how to make a clutch or Kawasaki needs to get rid of the slipper gripper slapper dapper clutch. I guess he might need to consider going back to a Yamaha. By the way this boy knows how to ride. He is the one who ran a 6.66 in the 1/8th on a little R6. I don't doubt his riding abilities at all.

OK, heres what i think i know about the problem. first the slipper aspect of the clutch has no bearing on the acceleration of the bike only the deceleration so this should not be the problem. i'm thinking that the stock clutch is fine for it's intended purpose. the hard launches were more than the design of the plates could handle. for the kind of clutches we have and R1's / busas/ etc/ etc, a clutch is a clutch. there is not much you can do to redesign it, but there is a lot you can do to make it live at the strip. i would contact some of the clutch plate manufacturers such as Barnett and see about plates with different friction material designed for your needs and perhaps slightly stiffer clutch springs....

Stick with stock plates for dragracing the barnetts and espcially the kevlars burn up way too quick when used in a dragracing application

MY TURN :D : Did anyone think of calling Muzzy's? After all they're bigtime into drag racing after they got kicked out of roadracing. They probably have some good advice to give (after you buy something) Garceeya: You know the main reason they post quarter mile times in all the mags is because it is the ultimate measuring stick of total acceleration. But did you notice that drag section is always much shorter than the track section? the bike's built for corners not drags, it just happens to function very well at the hands of someone good. You sound a lot better than most at drag racing so of course your clutches are going to last longer and your ET's are going to be lower. The fact you or I can smoke a clutch in one launch if we want, is and always has been the weakest link in big powerfull bikes. you just gotta deal with it, or you can go to a trackday instead :P (threadjack!)

Good advice from the last few guys that posted. I never once thought about taking it back to the dealer. I pulled the clutch myself tonight to find the very first fiber plate against the flywheel was broken into 4 different pieces. I am going to have to either re-surface the flywheel or buy another one. I have already talked to a couple freinds that own MSQ racing here in Dallas, they have ordered a new clutch and we will be sending this off to be welded by the same guy that built the bike that ran 9.30's, I think some of you guys probably saw the video. I am also going to be calling Barnett and Muzzy to get there take on it. I love drag racing and I plan on making this bike run as close to an 8 as possible with minimal mods. Being vertically challenged like I am (short) I have to ride a lowered bike, and it's hard to do corners on a bike with limited suspension travel.

Being vertically challenged like I am (short) I have to ride a lowered bike, and it's hard to do corners on a bike with limited suspension travel. Yes, I could see how it might be difficult to road race a bike that has the front end tied down and the rear suspension lowered. But being vertically challanged doesn't mean you couldn't road race. Have you seen Jason DiSalvo. He hauls ass and I would bet he can't be a much over 5' tall.

Glad you found the problem with your bike. I looked around a little and this is what I found. The first and last fibres in the stack have the same part number (13088-003) and cost around $11.00 each. Peace, JB

Glad you found the problem with your bike. I looked around a little and this is what I found. The first and last fibres in the stack have the same part number (13088-003) and cost around $11.00 each. Peace, JB I got the number for Barnett and will calling Monday morning to see what they reccomend if anything, worst case I put another stock clutch in it and get a trailer. :D

Heat is the number one enemy in clutches and it wears plates friction plates distorts the steel plates and softens the clutch SPRINGS. Replacing plates, stock or aftermarket and not replacing the clutch springs is heading for another expensive repair bill. The ZX10R slipper clutch is designed for road racing, just like the Motogp bikes. It makes no difference in hook up or acelleration. It acts like a normal clutch off the line, slip it hard and it will melt. If I do ten burn outs and the rear tire is stuffed can I claim a new tire under warranty? Can I claim a new clutch if I do ten hard launches at the drag strip? Always change the oil filter and oil if the clutch has had a hard time, all the fibre plates friction material is in the oil or filter somewhere in the engine.

Heat is the number one enemy in clutches and it wears plates friction plates distorts the steel plates and softens the clutch SPRINGS. Replacing plates, stock or aftermarket and not replacing the clutch springs is heading for another expensive repair bill. The ZX10R slipper clutch is designed for road racing, just like the Motogp bikes. It makes no difference in hook up or acelleration. It acts like a normal clutch off the line, slip it hard and it will melt. If I do ten burn outs and the rear tire is stuffed can I claim a new tire under warranty? Can I claim a new clutch if I do ten hard launches at the drag strip? Always change the oil filter and oil if the clutch has had a hard time, all the fibre plates friction material is in the oil or filter somewhere in the engine. Oil has been changed 3 times in the 1,163 miles it has on it right now. :wink: My 03 R6 had at the very least of 2-300 passes on it, in the 11,400 miles I put on it in just under a year, not one issue! and unlike the ZX10.....I made back to back passes. Granted it's only a 600 but that's a lot of passes and I did slip the clutch alot! Got it down to a 6.66,

Anyway, now that we have all the technical crap out of the way. I am sure most everyone else knew was I was getting at, it's not a normal clutch. It's not meant for drag racing. I drag race with it. It was doing fine, but went out last night. I know a few people who have had the same issue but just replace it with out fixing it. I don't want to do that. I want to set it up for what I do with it. I have only made about 20 hard launching passes on the clutch. I cant beleive you are having clutch issues. I'm a dragracer too. And trust me this clutch needs no fixing, it works very well. I have over 40 passes on my clutch and its still holding up fine. I'm almost ready to say the clutch is bullet proof. I have over 20 1.5's 60fts on the stock clutch no sign of slippage. I do use Redline 5w20 full synthetic, I'm sure it helps keep the clutch and tranny in good order. Norm

The clutch in the 10R is not a slipper clutch. It is designed to limit the effects that hi compression engines have regarding rear wheel lock up or hop during engine breaking (back shifting from hi rpm). A slipper clutch, well known to drag racing, is designed to give limited slip during hard launches to prevent wheelies and excessive rear tyre spin. There is also a lockup clutch, but we are not here to talk about that. I am sure there are others that can add to this and it might help some others understand the differences and I am always looking to learn more myself. Anyway, what have you done to your clutch that it warrents attention? Burnouts, hard launches, wheelies...? JB You might wanna go read up on your ZX10's Technical Specs again. If you own it you gotta get the story right.

Hey Norm Jackson!! What exactly do they do to the clutch for drag applications?? I cant seem to get a good launch out of my bike and I am pretty experienced. I was running faster times on my 03 GSXR 1000 with same mods. It just doesnt make sense and I was hoping it was clutch slippage related.

Anyway, now that we have all the technical crap out of the way. I am sure most everyone else knew was I was getting at, it's not a normal clutch. It's not meant for drag racing. I drag race with it. It was doing fine, but went out last night. I know a few people who have had the same issue but just replace it with out fixing it. I don't want to do that. I want to set it up for what I do with it. I have only made about 20 hard launching passes on the clutch. I cant beleive you are having clutch issues. I'm a dragracer too. And trust me this clutch needs no fixing, it works very well. I have over 40 passes on my clutch and its still holding up fine. I'm almost ready to say the clutch is bullet proof. I have over 20 1.5's 60fts on the stock clutch no sign of slippage. I do use Redline 5w20 full synthetic, I'm sure it helps keep the clutch and tranny in good order. Norm HMMMMMM. Apparently either Myself or a someone working on my clutch is a little confused. I was under the impression your clutch had been reworked. I was told that by the guy at the shop that said my clutch was going to be built by the same guy that did yours.....I am about to make some phone calls. Are you just letting it cool down good between runs ? what are you launching at ? Thanks, Rich

Ok, I got the story. It wasn't the Norman Jackson video there talking about. It was Chip something or nother and he is sponsered by Team Kawasaki. They are the one's doing my clutch......I didn't have my story straight. I am sure using Full synthetics and giving the clutch some cool time it will be fine a little longer. I Don't beleive any clutch is bullet proof......haha. :D Just my opinion and I ain't no proffesional. :wink:

That would be Chip Ellis and a guy name of Coby Adams from North Carolina works with Chip on his bikes is Coby the one with your clutch set-up?

That would be Chip Ellis and a guy name of Coby Adams from North Carolina works with Chip on his bikes is Coby the one with your clutch set-up? I am fairly sure there the guys doing it. What do you know of them ?? I don't know anything. so any info would be appreciated. Thanks!

They are good people and know their shit. Coby was going 7.70s 4 yrs ago with a NOS GSXR shootout bike with Ryan Schnitz riding it. I dont think you can go wrong with having Coby and Chip doing work on your bike.

They are good people and know their shit. Coby was going 7.70s 4 yrs ago with a NOS GSXR shootout bike with Ryan Schnitz riding it. I dont think you can go wrong with having Coby and Chip doing work on your bike. That's good news! Thanks for the info.... Rich

No problem

They are good people and know their shit. Coby was going 7.70s 4 yrs ago with a NOS GSXR shootout bike with Ryan Schnitz riding it. I dont think you can go wrong with having Coby and Chip doing work on your bike. I am retracting this statement upon inspection of the parts I recieved. They simply look awesome. I think it was worth the wait. I wish it would have been done a little quicker and everything that was said was done but the clutch looks awesome, whoever welded this thing knows what there doing.

Hey Gars, Are you sure your clutch went to Coby? Because I have never heard a negetive word about him in 10 yrs of being around dragracing. Another question how far do you have your forks lowered thru the tripple?

Hey Gars, Are you sure your clutch went to Coby? Because I have never heard a negetive word about him in 10 yrs of being around dragracing. Another question how far do you have your forks lowered thru the tripple? Anyway, We had a clutch overnighted and it should be running today.....1 month exactly. I lowered it 2-3/8 through the triple. I used Micrometers to make sure it was perfect and I have no head shake or anything, it's perfect. Even when strapped I get no head shake. However I don't reccomend going that low due to the oil pan, If I could get away with it I would only go a 2" in the rear and maybe 1.5 in the front. The oil drain plug is the lowest part of the bike and it's the first thing to hit if you bottom out. I have busted mine twice already but I think I know what I can and can't do now....lol.

I lowered mine about 3/4 of an inch in the front and was curios as to how much further I could go before the taper of the forks comes into play trying to get the bike as low as possible to help with wheelies when launching hard.Gonna try a 15 tooth front sprocket so going to need all the help I can get with keeping the front end down

I lowered mine about 3/4 of an inch in the front and was curios as to how much further I could go before the taper of the forks comes into play trying to get the bike as low as possible to help with wheelies when launching hard.Gonna try a 15 tooth front sprocket so going to need all the help I can get with keeping the front end down My brother is a little more conservative than me, he dropped it 2" and it's fine. No problems at all. I am dropping two teeth up front, ordered it yesterday. You just need a strap, you can slam the front end at the track and it will be fine, My front end comes up very little (Meaning every once in a while) on the track. Good luck, let me know what you run.

so far best time has been 10.16 at 136mph highest MPH I have seen is 141 only mods are the 16 tooth sprocket lowered 3/4in front+strap and lowered 2in in the rear I am about 190lbs in leathers 60ft times are whats killing my times best have only been mid 1.7s hopefully with a 15 tooth sprocket and lowered more I can get the 60fts down in the low 1.6s then the 1/4 times will come way down still need to do some lowering and tweeking on the suspension

so far best time has been 10.16 at 136mph highest MPH I have seen is 141 only mods are the 16 tooth sprocket lowered 3/4in front+strap and lowered 2in in the rear I am about 190lbs in leathers 60ft times are whats killing my times best have only been mid 1.7s hopefully with a 15 tooth sprocket and lowered more I can get the 60fts down in the low 1.6s then the 1/4 times will come way down still need to do some lowering and tweeking on the suspension Not bad for your wieght, my first run was a 10.16.....lol I MPH'd more probably due to my weight, 141-142 (can't remember for sure). That 60' show's you know what your doing, 1.7's are not easy. My best launch on this bike was done at a 3000 rpm launch, 1.68. That sprocket should help save your clutch. I think these tall first gears are what toasted mine, to get em out of the hole you gotta ride it WAY out.

I am having to slip the clutch quite a bit to keep the revs up in 1st gear.bike just doesnt have the low end torque.when I finally do get the clutch all the way out I usually get a wheelie at the top of first I have a video of it if you want it

This is what I did Friday night. I was taking it easy just seeing how this new clutch was going to react. I launched off idle, just kind blipping the throttle and it went a 1.74 60' 6.52 @ 116 1/8 mile. I am going to continue to try to launch like that and I am also dropping two teeth in the front tonight, according to a VERY good source that's the way to not only save the clutch but also pull some good 60's and keep it from falling on it's face. I should have some new numbers this week. I would say send me the video but I have a really crappy connection right now so it will take me a couple of hours to actually get it. I'll ask ya for it as soon as I get a good connection. I love watching these things run.

Hello I can tell you these. I'm Using my bike since 0 miles to drag race only. now I have 17000 miles on the tach. but my first clutch replace was only at 5000 miles, after that I put mods to my bike to running faster, at these point I Cant use OEM clutchs because only work for 5 races in the 1/4 mile, already I put 6 set of clutch on my zx10. Now I try the barnetts systems and I had 3000 miles on it and still running good and on the dyno keeps my horse power at the wheels also improve 4 more horse power with the barnett clutch that I Had with OEM clutch at the top end.

025. shims under each clutch spring, 45 passes, 1.43- 1.52 60' 200lb rider, 15/41 gearing

Boy this one was dug up from deep in the archives. LOL

025. shims under each clutch spring, 45 passes, 1.43- 1.52 60' 200lb rider, 15/41 gearing Im using barnett springs , also my weigth is 190 lbs I have 16/39 1/8 mile times are from 6.3 to 6.5 with 1.7 and 1.8 at the 60 feet time 15/41 is not to high for the 1/4 mile? in wich gear run the end of the 1/4 mile? I put the 5 gear as soon pass the 1/4 mile line at the end of each pass

I welded up my clutch hubs. Which loses the slipper clutch but i have noticed my clutches last alot longer while drag racing. I usually do 10-15 passes a weekend. Several weekends in a row.

Has anyone one used Muzzys lockup clutch or heard of any others that build them?