chrisf
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| posted on 24/9/06 at 02:39 PM |
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Fireblade Gear crunching
Hi All:
Last night, I take my wife out for a quick spin and some drinks. While stopped at a light and with some pretty heavy traffic, I went from first into
neutral by mistake. I try to shift into second and I hear some crashing, like two gears that are trying to mate but cannot. No matter what I did, I
could not get into second.
So I quickly pulled over and slowed to the point where I could shift into first (around 10 MPH). But not without a crash as well.
What is up with this? Do I need a new first and second gear? Is this a common problem?
Last time this happened, I raised the revs and jammed it into first. But that resulted in a huge, dramatic crash that I thought surely sent bits of
gears everywhere.
Third through 6 work wonderfully. First and second are horrible. Any ideas?
--Thanks, Chris
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alister667
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| posted on 24/9/06 at 06:40 PM |
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Pure guess, but maybe the gear selector forks?
I've never had one go on me, but I think they work in pairs?
Only guessing though.
All the best
Ali
http://members.lycos.co.uk/alister667/
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tks
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| posted on 24/9/06 at 06:58 PM |
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Mhh
Does the clutch disengage totally??
could be a clutch problem!
Tks
The above comments are always meant to be from the above persons perspective.
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ChrisGamlin
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| posted on 24/9/06 at 07:57 PM |
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Firstly Im a bit confused what happened, did it do this whilst stationary at the lights, or after yo'd pulled away going from first to
second?
If its the latter then I guess the main thing is try to fine tune tour technique to ensure it doesnt happen, but either way next time it does it, try
bringing the clutch up, then put it back down again whilst in neutral before trying to re-select the gear. Bringing the clutch up / down spins the
gearbox back up and it may well select the gear easier. You certainly have to do this quite often when in neutral whilst stationary and wanting to
select first, both on the blade and the R1.
Also as TKS has mentioned, check the clutch is fully disengaging when hot
cheers
Chris
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Lightning
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| posted on 24/9/06 at 08:12 PM |
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Mine did that but in 3rd gear. It turned out to be the selector drum being chipped and not pulling across the forks that engage the gear. I have heard
of others with the same thing happening. A new drum from Honda is approx £110.. I got a new engine instead. I'm not saying that that is defo the
reason but could be. If you suspect this you will be able to see by dropping the sump.
 
Rescued attachment Harrydog 012.jpg
Steve
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chrisf
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| posted on 24/9/06 at 11:15 PM |
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Thanks guys. Of course, I'll try not to do this again 
This happened when pulling away from the light and trying to shift from first to second. If this happens again, I should press the clutch in a out
twice, then shift into gear?
TKS: The clutch cable did need to be slightly tightened, but I still think there is more to it because it worked fine in the other gears...
If it keeps happening, I'll drop the sump and have a look. If not, I'll have a look next time I change the oil. Will I be able to see all
the gears in there as well?
If I'm able to find a complete gearset, will I have to split the cases to install it?
--Thanks, Chris
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ChrisGamlin
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| posted on 25/9/06 at 12:06 AM |
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Hi Chris
quote:
Originally posted by chrisf
This happened when pulling away from the light and trying to shift from first to second. If this happens again, I should press the clutch in a out
twice, then shift into gear?
It generally works when stationary trying to get into gear, if you're finding neutral whilst shifting from 1st to 2nd then either you're
not shifting positively enough, or there's a bigger issue. I assume you're using the clutch for that shift ?
quote:
Will I be able to see all the gears in there as well?
You can see the majority of them
quote:
If I'm able to find a complete gearset, will I have to split the cases to install it?
To fit a complete gearset you'll need to split the block, but the RGB boys do it quite often and its not rocket science.
cheers
Chris
[Edited on 25/9/06 by ChrisGamlin]
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tks
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| posted on 25/9/06 at 11:53 AM |
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mhhh
If the clutch cable needed tensioning.
You can almost say that is the cure,
saying that travel is as most important as tension.
The bike only need a couple of mm to clear each plate 0,1mm..
Tks
The above comments are always meant to be from the above persons perspective.
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chrisf
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| posted on 25/9/06 at 01:24 PM |
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OK, it happened again last night. What may be happening is that the aluminum splined section that actually does the shifting may not be working well:
there is quite a bit of play between pushing the shifter forward and the gear actually engaging. I'm using the clutch when going from first to
second, but it is easier (and smoother) to not use the clutch for 3-6th.
A while ago, someone posted steel splined clamps that go on the shifter. I think it was from the UK eBay site. Does anyone remember who that was or if
they are still selling?
I tightened the clutch cable and it still happened...
--Chris
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ChrisGamlin
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| posted on 25/9/06 at 07:46 PM |
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Not sure, I know Westfield do one but probably not the cheapest solution. If there's any slack / play in your gear shift linkage as you've
alluded to though, then thats a good bet to be causing your problems.
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tks
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| posted on 26/9/06 at 08:49 AM |
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Yeah!
in fact its bad because it can wear/bend your fingers right??
you are kissing the first gear! you need to pull it in not to kiss it in!
i bet its the linkage! infact its a cheap! solution compared to gearbox overhaul.
Tks
The above comments are always meant to be from the above persons perspective.
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chrisf
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| posted on 26/9/06 at 09:37 AM |
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Well, I found a couple places that sell the splined shaft blank. Of course, they're both in the UK So I should see the new one arrive
shortly.
Anyone know the shaft diameter? Is it 12mm?
--Thanks, Chris
PS Kissing it into gear? To go from first to second, I press the clutch and push it into the nest gear...
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Coose
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| posted on 26/9/06 at 09:39 AM |
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Get your linkage sorted asap though - I've just had to fit a new 2nd gear to my '72 XS650 flat tracker due to a clumsy previous owners
cack-footed gear changing! It doesn't take much to knock the edges off the dogs.....
Spin 'er off Well...
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chrisf
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| posted on 26/9/06 at 12:06 PM |
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My fear it that's exactly what happened...
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tks
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| posted on 26/9/06 at 12:37 PM |
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you thought you where pulling!!
But in fact you wheren't!!
you where trying to mate 2 toothed wheels without lateral pressure!!
the bike engine doesn't like this because albeit you wear some dogs or what ever
the material comes overall!!
it can even knockout a bearing!!
and when reving to 11.000rpm... the damage will be huge..
Tks
The above comments are always meant to be from the above persons perspective.
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chrisf
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| posted on 26/9/06 at 03:57 PM |
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No, it wasn't a mis-shift. That would be very bad...
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