Trading money for weight - Page 62 - Kawasaki ZX-10R.net
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post #611 of 783 Old 01-11-2018, 04:05 PM Thread Starter
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You funny fu.k!no such thing as ugly mate!we are all unique in our own way!if we all looked the same eating rice would become a challenge!no offence ment here I just find it hard to distinguish one from the other sometimes!
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post #612 of 783 Old 01-16-2018, 01:24 PM Thread Starter
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7075 Aluminium rear axle weight

Well here's the weight difference between the oem steel axle and the 7075 Aluminium axle!for interest sake the outside diameter of the oem steel axle is M25mm!the 7075 obviously has a M25mm diameter with a internal 13mm hole!so the outer wall thickness is 6mm!the front specs are not far away
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post #613 of 783 Old 01-16-2018, 04:47 PM
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Not bad weight.
The 7075 is harder to machine than lesser alloys. I have machined 7075 bits myself for my bike.
Its quite heavy for an alloy too but strong.
My main concern would be the threads on the rear axle.
But you could keep a check on the nut with a torque whench from time to time.
Ideally titanium would be the best option because you could go thinner wall than standard yet keep the strength but its expensive.
Then you could get it under 50% weight.
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post #614 of 783 Old 01-17-2018, 12:50 AM Thread Starter
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Titanium maybe 40%!I have not yet seen 1 piece of Titanium hardware with the same dimensions as oem 50% lighter!thats even with a Racespec drilled for safety wires Titanium bolt!the walls would have to be pretty thin to drop that much weight as the oem isn't that thick at all
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post #615 of 783 Old 01-17-2018, 04:14 AM
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Quote:
Originally Posted by peterd10r View Post
Titanium maybe 40%!I have not yet seen 1 piece of Titanium hardware with the same dimensions as oem 50% lighter!thats even with a Racespec drilled for safety wires Titanium bolt!the walls would have to be pretty thin to drop that much weight as the oem isn't that thick at all
Genuine grade 5 is 55% of steel.
When i made my shock mount i put bigger hole down the center and made all walls thinner in every dimension so i could beat the 55%.
This would cost alot to make spindle in grade 5 though
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post #616 of 783 Old 01-17-2018, 09:51 PM Thread Starter
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Front Axle and something a little special

Front axle all done and both are on there way to me!He also said he could fab the rear Aluminium oem pass seat/lock subframe piece!well it's well on its way and will uterlise all oem fittings(seat lock etc)!honestly I wish I had for 1 the ability and machinery to reproduce what some tradesman can do!many of our members are specialist in certain fields like LDH with Ohlins!UK you have the ability and do fabricate quality bespoke parts!Skydork with mechanical knowledge the list is endless!
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post #617 of 783 Old 01-17-2018, 09:58 PM Thread Starter
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Better front axle picture

Here you go!I will use my scales when they arrive to way oem and 7075 for results but all up around a 340g weight loss all up so I'm happy!the rear Carbon frame that's coming and the 2 I just put on is where the big weight loss are at!
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post #618 of 783 Old 01-17-2018, 11:28 PM
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Damn that carbon is really cool.
Thats gonna be a big weight saving.
I only managed to get a gen4 subframe down to 350g and its not the prettiest but it was free so it will have to do lol.
The gen5 subframe is heavier still. 900 i believe.
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post #619 of 783 Old 01-18-2018, 12:21 AM Thread Starter
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That looks great mate!I often considered trying in some way to lighten that rear piece!I see another 40grams easily lost in the 4xM8 bolts that attaches the subframe rails to that support!if you lived in Aus I've got quite a few of them kicking around in Titanium!they have a 10mm shoulder and about 20mm long and either the rear shorter Titanium disc mount bolts fit or the same profile as the oem rearset mount bolts!you can pick them up in grade5 on eBay from a few U.K based suppliers just pay attention to the length of the shoulder of the Ti bolts you might buy!some of the disc/rotor 18-20mm long have a 5-6mm long shoulder that is to long and the inner face of those bolts doesn't contact the support rails that holds the 2 pieces together!your no fool you get the picture
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post #620 of 783 Old 01-18-2018, 01:11 AM Thread Starter
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Actually you have some of the best weight loss in oem bolts easily replaced and at very cheap prices atm as China has flooded the market with Titanium hardware and quality pieces also!there are so many companys with CNC machines sitting idle in China and knowing what prices the Market leading company's like Probolt,Racebolt were asking boom they hit it!honestly Probolt was asking over $1000 for their gen4 race parts kit now around $400!
The 4xM10x25mm rear subframe oem mount bolts -84grams......Titanium 48grams,weight lost=36g
Top shock mount nut 37grams.........Titanium 19g,weight lost 18g
4xM8 rear support frame to rear seat support bolts 52g...........Titanium 24g,weight lost=28g
Total=82grams weight lost
As I said it's easily and can be cheaply done but it's just a personal choice and up to you and if you need any bolt specs and best suppliers just pm me mate I will help you out
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