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post #1 of 23 Old 02-27-2016, 4:25 PM Thread Starter
 
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929 shifting issue

Hi all.
I've done some research on here and other places and am confused because there is too much wrong and wide variety of information out there. I have a 929 that I am having shifting issues with it. I've narrowed it down to 3rd and 4th. Sometimes a lot sometimes it doesn't happen very often. When I shift up into 4th obviously from 3rd, it will shift, I'll ride a couple seconds maybe and then it will go back to 3rd. It's not violent, it's not loud it just happens. I have seen a false neutral or two in that range as well. I know a lot about bikes, but honestly I've never been in a transmission. 1st question is is it drum/forks? Or the teeth that mesh the gears together (called dogs I think?)?. Also if it's drum/forks that do that do the cases need split or can you enter through the oil pan? I know you have to take the halves apart for gear work. Thanks for the help!
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post #2 of 23 Old 02-27-2016, 6:13 PM
 
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Re: 929 shifting issue

On my old VFR it was the dogs on the gears that are used to link gears together (not the teeth). But if you gave been trying to "hold it" in gear this can lead to shift fork wear (had the same problem with third/fourth gear).

Can often mean by the time you break out the box there are several "damaged pieces" to replace...

Can post some pics if you like of the worn dogs and shift fork...

1994 CBR900RRR
1997 CBR900RRV
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post #3 of 23 Old 02-27-2016, 6:17 PM Thread Starter
 
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Re: 929 shifting issue

Please do. Thanks for the insight. I'd like to know what I'm looking for once I get in there. I visually know how a transmission works but I wanna know what "bad parts" look like when I get there. I think if I'm going through the trouble I will probably replace everything I can afford
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post #4 of 23 Old 02-27-2016, 6:37 PM
 
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Re: 929 shifting issue

As requested.

Note wear to selector fork, rounding on dogs and rounding where dogs engage....

Which caused bike to drop out of third and fourth gears, false neutral between gears etc....
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1994 CBR900RRR
1997 CBR900RRV

Last edited by saxonblade; 02-27-2016 at 6:38 PM. Reason: Added words
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post #5 of 23 Old 02-27-2016, 6:50 PM Thread Starter
 
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Re: 929 shifting issue

Those are supposed to be squared aren't they?! If so oh my god!
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post #6 of 23 Old 02-27-2016, 6:59 PM
 
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Re: 929 shifting issue

Yes - supposed to have a crisp edge..., note the wear on the selector fork, I almost missed this when replacing the gears (gears and selector fork now live on the mantel).

Replacing these two cogs and one selector shaft cost me nearly 400 (15 or so years ago), so if you need more than one or two cogs, a second hand box may be cheaper...(gaskets, selector fork, cogs, various tools etc)..

1994 CBR900RRR
1997 CBR900RRV

Last edited by saxonblade; 02-27-2016 at 6:59 PM. Reason: Typo
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post #7 of 23 Old 02-27-2016, 7:03 PM Thread Starter
 
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Re: 929 shifting issue

You didn't feel the need to replace the drum? Also how bad did it get before you finally decided to tear it apart?
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post #8 of 23 Old 02-27-2016, 7:26 PM
 
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Re: 929 shifting issue

At 70 - 80 a cog, I felt no desire to change anything that did not need changing...

I only changed the gears that were dropping out... And those parts with obvious signs of wear....

1994 CBR900RRR
1997 CBR900RRV
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post #9 of 23 Old 02-27-2016, 7:28 PM
 
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Re: 929 shifting issue

Ronayers .com has cogs in at reasonable prices... But a low wear (miles) secondhand box would still likely be cheaper....

1994 CBR900RRR
1997 CBR900RRV
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post #10 of 23 Old 02-27-2016, 8:41 PM Thread Starter
 
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Re: 929 shifting issue

You think the newer parts are of better construction? I know this is a common issue, maybe Honda revised them? That would be something that would make me want new components over a eBay one.
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post #11 of 23 Old 02-27-2016, 8:45 PM
 
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Re: 929 shifting issue

Can't comment, not long after I rebuilt the box, I had an off on the bike and after rebuilding her I moved her along....

And bought the blade...... 15 years..ish and going strong.....

1994 CBR900RRR
1997 CBR900RRV
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post #12 of 23 Old 02-27-2016, 8:48 PM
 
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Re: 929 shifting issue

But if you are considering a 2nd hand box, check the pictures carefully.... If you can... My advice would be to strip out the old box, check each part carefully, price up genuine new replacements, then you know the "gamble" on a 2nd hand box...

Given the situation again, I'd be looking for a secondhand box...

1994 CBR900RRR
1997 CBR900RRV
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post #13 of 23 Old 02-27-2016, 8:53 PM Thread Starter
 
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Re: 929 shifting issue

I think the scary part with me is knowing the idiots riding some of these bikes over the years and all 8k miles might be 2nd clutched wheelies! Like you said gotta look hard but that can be tough with pictures off the internet. I wonder what does that much damage? Bad shifting? Abuse or just bad parts?
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post #14 of 23 Old 02-27-2016, 9:02 PM Thread Starter
 
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Re: 929 shifting issue

Looking at one on eBay that has been "undercut". What's your opinion on that?
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post #15 of 23 Old 02-27-2016, 9:22 PM
 
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Re: 929 shifting issue

I see your point.... Strip your box first and see... Some people are very unsympathetic to their gearbox, others run many miles without problem....I would expect 2nd gear to be an issue because of the large gap between 1st and 2nd, but most people probably spend most time in 3rd and 4th...shifting between the two around town etc....I wonder what causes most damage...

1994 CBR900RRR
1997 CBR900RRV

Last edited by saxonblade; 02-27-2016 at 9:22 PM. Reason: Typo
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