Rocket stuck in top (5th) gear and now making grinding noise... 240HP

[Sam]

Hey all,

Just picked up a rocket here in Aus for a bargain price and it seems I have blown the box.... Only got 1000kms up the road before it went Note: The bike rev's to well over 8,000rpm , and develops around 240 HP.... An amazing piece of kit.

It looks like I will have to overhaul it. Is there anybody online that has overhauled one of these that could give me some tips on overhauling? I'm wondering how many HP can a standard box handle?? Should I beef up the box? and if so how?

 

[Tripps]

The high horsepower ones seem no more or less likely to blow up the transmission, seems kind of random, you get a good one or you don't.

 

[Mike188]

Welcome from Adelaide, and bugger

 

[idk]

G'day and welcome.

Sounds like a broken detent spring to me. Easy to fix if it is. Instructions below.

 

[Sam]

You guys rock! Cheers for the info! Any idea's how long a gearbox o/haul should take???

 

[Sam]

Also, for some further info, bike making grinding noise while pushing even with clutch in and will not roll backwards clutch in or out

 

[warp9.9]

You guys rock! Cheers for the info! Any idea's how long a gearbox o/haul should take???

If you have the parts about 24 hours start to finish would be my guess. To me it sounds like you have more then a detent spring problem. Sounds like fourth and fifth dogs are in mess or partially engaged. What year Rocket is it?

 

[idk]

Make sure that your clutch is adjusted EXACTLY as stated in the manual. It is amazing how many problems can be caused if it isn't.

 

[Mittzy]

Welcome mate, where in OZ are you?
@MRJ has recently had his gearbox apart, he is on the gold coast.

 

[Sam]

@warp9.9 bike is 2007 and has a carpenter racing kit in it. Great bike! shame about the breakdown have the gearboxes significantly changed between 2007 and current??