My bike is brocken :( Gearbox??????

[Chris750]

Riding along today I lost all gears accept for first, I limped it 30 yards to safety out of the way of traffic and the back wheel locked up.

I't won't even roll freely in neutral. Luckly I wasn't far from home, so rather than wait for the AA, I had a 30 minute push with the clutch held in.

Now I am at a bit of loss what to do. If the gearbox is gone I may as well break the bike, as its not worth that much so I don't think it would be worth repairing.


What would be the likely cause of this issue? Is it even worth bothering trying to sort out?

Bike is a GSXR 750 WS.
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Current Rides: GSXR-750 WS, GSXR-1000 K5, KTM EXC 300

[Pol Anorl]

sounds like a possible track bike to me
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[MarJay]

[Robby]

If it's failing to select gears, then you're looking at a failure with the selector rather than with the gears themselves. A fair amount of the selector mechanism can be viewed without splitting the cases, you can get to it by removing one of the crankcase covers.

If the problem isn't in the linkage, then a possibility is the knurled selector wheel that bolts onto the end of the drum. This is usually keyed into position with quite a slim dowel, and if that dowel sheared then the selector drum wouldn't turn. Not a particularly difficult fix, and something that would come under stress from a lot of harsh (clutchless) gear changes.

That or a bolt worked loose in the selector mech.

[Chris750]

Thanks Marjay that is very helpfull. I think I will spend the day tomorrow seeing if I can identify what is wrong.
I am fairly familiar with the working of the bike except clutch and gearbox as its one thing I have never had to deal with.

If the gear box has gone, I did see one on ebay a couple of months ago for a couple of hundred if I can get another. Would this be a nightmare to change though?
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Current Rides: GSXR-750 WS, GSXR-1000 K5, KTM EXC 300

[Chris750]

[MarJay]

[Chris750]

One further thing that has come to my attention now I think about it.
A couple of time when I changed from first to second it wouldn't go into gear. So I had to stay in first for another second, close the throttle again and it would go in. This has only happened 3 or 4 times though over the last few months.

Also I had the sentsation this morning that something was slipping under hard acceleration like I had the clutch lever was not properly released. I had assumed the clutch may be on its way out.

I think this bike has had a hard life with its previous owners.
I have now spent so much money and time into trying to make it good, that everytime something new come up I think I may as well put it right or else the previous effort and expense would be wasted.
This was also my first bike I have owned so I do have some sentimental attachment to it and was planning to just use it as my getting to work/backup bike when I have other bikes.

But I will have to see what happens now.
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Current Rides: GSXR-750 WS, GSXR-1000 K5, KTM EXC 300

[Pete.]

[Chris750]

[mad4it028]

good breakers gsxrs failing that engines can be picked up fairly cheap
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always looking to buy bikes crashed ,unfinished projects,none runners pm me
currently riding kawasaki z1000 only bike ive ever loved

[Pete.]

Complete engine on OSS for £175
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a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[Chris750]

[cloric_tzr]

[Pete.]

[Chris750]

I did the swap out this weekend and it's up and running.

Whoever said broken gear selector fork for the old engine (Robby?), ten out of ten.

I will probably hang onto the old engine Cloric_tzr, I will either repair it or it will keep me in spares for years.

Thanks everyone


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Current Rides: GSXR-750 WS, GSXR-1000 K5, KTM EXC 300

[Sako]

good result!

[m1tch]