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Thread: Titanium Bolts & Nuts

  1. #1

    Titanium Bolts & Nuts

    OK, I'm starting another thread on this as way to both make it easy for other to find info on the matter on the future and to keep Saturnalian's thread from going too off topic (is this even possible in TT?)

    For those of you who didn't follow the previous messages, I was interested to know if there was any real benefit in fitting Ti bolts and etc as I given some as part of a deal a while back but never bothered putting them on the bike. Yesterday I got another set of wheels and they came disassembled so I took the opportunity and weighed the Ti Disc Bolts vs the standard ones.

    Standard (bit of loctite on it but I compared it against some others with a TON of loctite left on the thread and the scale showed no difference in weight, so I'll assume it's not important)

    20150429_125307.jpg

    Titanium

    20150429_125156.jpg

    By looking at the pics, one could be excused for saying "wow... that's heaps lighter!!" but when I consider that the whole front wheel will only carry 10 of those, I'm actually saving 80g max... sure, it's rotating mass but even using that thumb rule of "multiply by 4" it's still only 320g on the front wheel and 128g on the back (plus whatever for nuts). Now, I didn't "really" pay for those 'cause like I said they were part of a package and I was actually interested on the other parts so the bolts and nuts came as a bonus. But if I had to pay what Pro Bolts asks for them I'm pretty sure I'd buy something else instead. I suppose if you're replacing a big part (i.e. exhaust) for Ti it's a different story though.

    I didn't weigh the standard nuts 'cause they're all on the carrier and that's not even on the wheel so it'd be a PITA to get them out just to do this... I did weigh the Ti nut in case anyone is interested.

    20150429_125129.jpg
    Last edited by Mr.Ed; 29-04-2015 at 12:18 PM.

  2. #2
    misguided youth Little Mick's Avatar
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    Factoring the radius that the centre of mass is at for the bolts or nuts, any saving could easily be outweighed by a rough balance job with excessive wheel weights installed to fix it when you consider the wheel weights are at the outer edge of the wheel... Some 2 to 3 times the radius of the bolt pcd. .. i could work out the differences but unless you are chasing umpteenths then you are unlikely to notice the difference with the bolts /nuts.

    Ed
    Do you have a metal valve cap and rubber cap to weigh for comparison?
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  3. #3
    Quote Originally Posted by Little Mick View Post

    Do you have a metal valve cap and rubber cap to weigh for comparison?
    Gonna have to be more specific than that... Are we talking Ti or just your garden variety metal?

  4. #4
    misguided youth Little Mick's Avatar
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    Garden variety to compare difference a valve cap can make
    Life's too Short- YOLO!

  5. #5
    Oh... You were serious!

  6. #6
    Quote Originally Posted by Mr.Ed View Post
    Oh... You were serious!
    You started it.

  7. #7
    For you and I there would be plenty of things we would buy first, but on an all out project anytime you can save over 50% is massive.

  8. #8
    Absolutely! On a project like Jamie's this does make a lot of sense. On my bike however...

  9. #9
    misguided youth Little Mick's Avatar
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    Quote Originally Posted by Mr.Ed View Post
    Absolutely! On a project like Jamie's this does make a lot of sense. On my bike however...
    It makes a lot of sense on reciprocating loads that drag HP or as steve says, when there is a significant weight reduction in dynamic mass.. now if you were talking lightened sprockets, brake disc, axle, swing arm, and rim, then it would be a no brainer to finish off with the Ti numbnuts etc....

    in reality, with all that above though... It wouldn't make me any fasterer
    Life's too Short- YOLO!

  10. #10
    Senior Member Metal-Man's Avatar
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    isn't staino lighter than ti ??
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  11. #11
    Quote Originally Posted by Metal-Man View Post
    isn't staino lighter than ti ??
    Nope, stainless steel is quite heavy (the 'steel' in the name gives it away). Aluminium is lighter than Ti by quite a bit (not quite half but getting there), but nowhere near as strong. Ti has the best strength-to-weight of any metal. Magnesium is a third lighter again than aluminium, with similar strength, but neither are a patch on Ti in terms of strength.
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  12. #12
    Admin Turbo's Avatar
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    I think the main advantages of Ti can be found in this department...



    Shame they're covered up by fairings really!
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  13. #13
    Those do look great

  14. #14
    Quote Originally Posted by Sicko View Post
    I think the main advantages of Ti can be found in this department...



    Shame they're covered up by fairings really!
    That's fucken UNREAL!!!! Man I love those headers.
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  15. #15
    Senior Member Linden's Avatar
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    No one has mentioned High Tensile ... remember that Ti Bolts are < 9 so rotor mounts (sometimes > 10) etc should be treated with care ... seen some very dodgy stuff show up for P's courses in the past

    NB number off top of head
    Last edited by Linden; 30-04-2015 at 01:15 PM.

  16. #16
    Senior Member Saturnalian's Avatar
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    Quote Originally Posted by Marshy View Post
    That's fucken UNREAL!!!! Man I love those headers.
    +1 to that. It's the one thing I didn't do that I wished I did.
    Maybe after winter I'll sell the stainless Akra system and upgrade


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  17. #17
    If your using Titanium, go 12 point

    20150311_070805.jpg

  18. #18
    Admin Turbo's Avatar
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    Quote Originally Posted by Kris View Post
    If your using Titanium, go 12 point
    Ooooo, like that!
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  20. #20
    Senior Member dan's Avatar
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    Quote Originally Posted by Saturnalian View Post
    +1 to that. It's the one thing I didn't do that I wished I did.
    Maybe after winter I'll sell the stainless Akra system and upgrade


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    Maybe I'll have a r6 by then...


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    do a burnout

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