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srad 1st gear clunk

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choonsy
L Plate Warrior



Joined: 10 Sep 2012
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PostPosted: 12:53 - 10 Sep 2012    Post subject: srad 1st gear clunk Reply with quote

the problem seems to happen more when the bike has warmed a little but what happens is when i set off in 1st gear bike will roll and clunk loudly, then that is it until about 7-9k revs and then a crunch of gears happens, had a bit of advice off various people but nothing concrete. ive got a gear box to fit if needed but didnt want to rave all that out if could be an easy fix... any questions will be answered asap, many thanks in advance
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Budgetboy
Scooby Slapper



Joined: 05 Apr 2012
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PostPosted: 14:40 - 10 Sep 2012    Post subject: Reply with quote

Does not sound good.. Sounds like gearbox selector forks to me..Or it could be just the gearbox itself.. hard to tell over the net, but you should really not be riding it as you WILL do more damage..

Change the gear box and measure the selector forks to make sure these are in spec.
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choonsy
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Joined: 10 Sep 2012
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PostPosted: 12:25 - 11 Sep 2012    Post subject: srad gear box Reply with quote

thanks for the advice , i have someone researching how to fit a gear box now who is quite mechanicly minded but any links to help if you know any would be good, any idea how much a garage would charge to fit the gear box? i have one ready to fit. many thanks
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Pete.
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Joined: 22 Aug 2006
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PostPosted: 16:41 - 11 Sep 2012    Post subject: Re: srad 1st gear clunk Reply with quote

choonsy wrote:
the problem seems to happen more when the bike has warmed a little but what happens is when i set off in 1st gear bike will roll and clunk loudly, then that is it until about 7-9k revs and then a crunch of gears happens, had a bit of advice off various people but nothing concrete. ive got a gear box to fit if needed but didnt want to rave all that out if could be an easy fix... any questions will be answered asap, many thanks in advance


You're getting clunking when pulling in 1st and then when you get to high revs it turns into a machine-gun reptition of same noise?

Rounded gear dogs on 1st gear. You've probably battered a notch in the shift drum too.

The gearbox had to come out. Being a gixxer, you might be lucky and find you can pull the bottom casing off to get at the gearbox without stripping off the top-end.
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choonsy
L Plate Warrior



Joined: 10 Sep 2012
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PostPosted: 20:14 - 11 Sep 2012    Post subject: Reply with quote

cheers , were changing gear box tommorow onwards, complete gear box change,,, gonna be as simple as cheese , lol yep right. any further advice would be greatly recieved guys, any links, or just knowledge from the wise
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MaybeGuy
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Joined: 12 Mar 2007
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PostPosted: 21:27 - 11 Sep 2012    Post subject: Re: srad 1st gear clunk Reply with quote

Pete. wrote:
choonsy wrote:
the problem seems to happen more when the bike has warmed a little but what happens is when i set off in 1st gear bike will roll and clunk loudly, then that is it until about 7-9k revs and then a crunch of gears happens, had a bit of advice off various people but nothing concrete. ive got a gear box to fit if needed but didnt want to rave all that out if could be an easy fix... any questions will be answered asap, many thanks in advance


You're getting clunking when pulling in 1st and then when you get to high revs it turns into a machine-gun reptition of same noise?

Rounded gear dogs on 1st gear. You've probably battered a notch in the shift drum too.

The gearbox had to come out. Being a gixxer, you might be lucky and find you can pull the bottom casing off to get at the gearbox without stripping off the top-end.


Yeah, this is the case. I did the gearbox on a 750 SRAD not too long ago, and as far as gearboxes go, it's bloody simple to do. Sump off, split casings, gearbox comes out. Engine upside down preferably.
Reverse the process, job done.

Symptoms were what you describe, but in 6th gear, but IIRC, they're linked.

You'll need a new sump, clutch and generator gasket, and a tube of crankcase sealant. Fuck that thought we, so we just bought some cereal. If you ever find you have a weetabix sump gasket on your 750 gix, chances are I've been in it.

The SRAD in question was then test ridden... from Plymouth to Leeds... No problems, and now sold.
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