Caliper mount bolts- one time use? - Honda Motorcycles - FireBlades.org
Honda FireBlade Discussion of the Honda CBR 900RR, Honda CBR 929RR, Honda CBR 954RR, and Honda CBR 1000RR Motorcycles.

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post #1 of 26 Old 09-03-2007, 10:15 PM Thread Starter
 
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Caliper mount bolts- one time use?

The shop manual for my 06 indicates that the caliper mount bolts must be replaced when you change the pads. I'm just curious if anyone knows whether that is due to the bolts being self-locking or if they only have a life expectancy similar to that of the pads?
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post #2 of 26 Old 09-03-2007, 10:28 PM
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Re: Caliper mount bolts- one time use?

When you torque them they stretch.
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post #3 of 26 Old 09-03-2007, 10:34 PM Thread Starter
 
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Re: Caliper mount bolts- one time use?

Thanks
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post #4 of 26 Old 09-03-2007, 10:47 PM
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Re: Caliper mount bolts- one time use?

I have never swapped a set, calipers go off the racebike before every race day, during a race day, after a race day ...

You get the pic.

Saf - | SP-2 | 929RR Stunt/Race | 1000RR Superbike #181 |
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post #5 of 26 Old 09-03-2007, 10:53 PM Thread Starter
 
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Re: Caliper mount bolts- one time use?

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Originally Posted by saf View Post
I have never swapped a set, calipers go off the racebike before every race day, during a race day, after a race day ...

You get the pic.
In light of our recent conversation, I find that interesting. Is it that you think it's a life-expectancy issue and therefore you aren't waiting 10k miles to change them? Or perhaps that you think it's a self-locking issue and they're lock-wired anyways?
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post #6 of 26 Old 09-03-2007, 10:55 PM
 
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Re: Caliper mount bolts- one time use?

hey guys, im new on this site and was just wondering if anyone could tell me which model cbr's with a 17" front wheel will bolt straight on to a 92 cbr 900rr without modification?
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post #7 of 26 Old 09-03-2007, 11:05 PM
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Re: Caliper mount bolts- one time use?

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Originally Posted by 06CBR1KMFNRR View Post
Is it that you think it's a life-expectancy issue and therefore you aren't waiting 10k miles to change them?
Ill tell you now, even at Honda, they dont change the bolts. Mine are safety wired in, but the coming loose part isnt the problem, a torque to yield bolt in theory can snap. Theory. They are made that way to torque up first time, however we swap tyres on and off as does every other radial mounted brake team, and dont have a problem.

Saf - | SP-2 | 929RR Stunt/Race | 1000RR Superbike #181 |
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post #8 of 26 Old 09-03-2007, 11:06 PM Thread Starter
 
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Re: Caliper mount bolts- one time use?

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Originally Posted by BLADE BLASTER View Post
hey guys, im new on this site and was just wondering if anyone could tell me which model cbr's with a 17" front wheel will bolt straight on to a 92 cbr 900rr without modification?

Welcome to the forum, but you need to do a search for the information you're looking for and if you don't find any info, start a new thread.

This place is jam-packed full of people with information, and I'm positive you came to right forum.

again, not tryin' to be a dic*, but sometimes it a happens without trying!
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post #9 of 26 Old 09-03-2007, 11:14 PM Thread Starter
 
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Re: Caliper mount bolts- one time use?

Torque to yield is not a phrase with which I am familiar. My experience with one-time-use bolts has left me under the impression that there are two intentional purposes. The first is that the bolt is made to "self-lock". In this case, when no plastic thread-lock is included, it means that the metal intentionally flexes a bit during initial installation to help keep the bolt from backing out in shakey and/or tense environments. The other is that the bolt has a life-expectancy under its intended use. Often the manufacturer tries to match that life-expectency to the component it secures and then requires that it be replaced with the component. Is "torque to yield" the first one?
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post #10 of 26 Old 09-03-2007, 11:19 PM
 
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Re: Caliper mount bolts- one time use?

it says that in the 929 service manual also. my bike has over 25k miles and I know I haven't changed them since I got it when I bought the bike with 17k. and they certainly weren't new at that time either. never had any problem.

if you can't convince them, confuse them.
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post #11 of 26 Old 09-03-2007, 11:34 PM Thread Starter
 
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Re: Caliper mount bolts- one time use?

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it says that in the 929 service manual also. my bike has over 25k miles and I know I haven't changed them since I got it when I bought the bike with 17k. and they certainly weren't new at that time either. never had any problem.
RE, don't think I'm ripping up on you, but I find it interesting that someone can show complete disregard for tech data without being questioned and insuled on this forum. This is one of many that have gone by, but when I talk about making my own parts, I get chastised.

These bolts are obviously safety critical, and while RE stands as a living example of how blowing off the following the tech data does mean pending doom, it is still just as much of a safety concern. If the bolts fail the! So where's the concern, folks?
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post #12 of 26 Old 09-03-2007, 11:35 PM Thread Starter
 
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Re: Caliper mount bolts- one time use?

And by insuled, I mean insulted. Stupid beer.
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post #13 of 26 Old 09-03-2007, 11:36 PM Thread Starter
 
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Re: Caliper mount bolts- one time use?

... and by "does mean" I mean "does not mean". I think it might be bed-time.
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post #14 of 26 Old 09-03-2007, 11:49 PM
 
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Re: Caliper mount bolts- one time use?

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Originally Posted by 06CBR1KMFNRR View Post
... and by "does mean" I mean "does not mean". I think it might be bed-time.
You could have just edited it and pretended no one noticed.



I guess I am one of those that blatantly ignores tech data. The only time I've had to replace a caliper bolt is when I over-torqued one of the bolts.

I'm not saying its right, but I cant think of anyone I know that replaces their caliper bolts each time.
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post #15 of 26 Old 09-03-2007, 11:52 PM
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Re: Caliper mount bolts- one time use?

Quote:
Originally Posted by 06CBR1KMFNRR View Post
but I find it interesting that someone can show complete disregard for tech data without being questioned and insuled on this forum. This is one of many that have gone by, but when I talk about making my own parts, I get chastised.
The difference here 06, is that funny word called experience. Your making something that is cheap to buy (compare it to the total cost of your bike and mods, not to mention you consume more cost in fuel than pads a year) and im using something ive never had a problem with, or ever seen anyone have a problem with, or ever heard anyone having a problem with.

Question was asked, question answered. In the last season and a half, ove had the calipers on and off ... about 30 times on my bike alone ?. Then customers, and race team mates etc etc. Same goes for my 929 as i use that part time for racing too.

And at the end of the day i didnt insult you or Datt about your methods, only questioned how you can justify making your own pads that cost ..... $50.

^^^ What Jhonda said in last line.

Saf - | SP-2 | 929RR Stunt/Race | 1000RR Superbike #181 |
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