RG150 gearbox

[quallman1234]

Riding along. Next minute a large metal grinding sound is heard and a constant scream.
Goes away in 5th and 6th but eventually is heard in every gear.
Neturals the worse.

Any ideas? also jumps in 3rd.

I have a spare gearbox so not that big of a deal. Still wondering what it might be sounds like a gear has chopped a couple of teeth and they are floating around in the gearbox

[ajturbo]

you need to put more oil in the gear box matey.. ad an EXTRA 100mls

but it sounds fugged

[quallman1234]

you need to put more oil in the gear box matey.. ad an EXTRA 100mls

but it sounds fugged

It is fugged .

Its probabaly due to lack of oil . Kinda sounds like it could just be the clutch tho. So ill whip the clutch cover off tonight. If not ive gotta go ahead and spilt the cases (again!)

[oyster]

AJ is right. This is 3rd gear seizing onto the shaft. In the worst case it locks solid and of course pulling the clutch in doesn't save your butt. As Craig Shirriffs, he told me it was the nastiest highside he's ever had, all on a humble little RG 150. The fix is to use a top quality LOW viscosity gear oil about 100ml overfilled. So this, makes for 1100ml wet change, 1150 dry change. In the eraly days we had this strange noise in a few bike only on certain corners at Ruapuna. Using good oil and the extra 100ml has seen NO PROBLEM ever since, (we're talking 40 bikes over 2 years here!)

But keep an eye on foaming and catch bottle problems tho, we've had two with persistent foaming and overflow probs, acually a rider problem in the end.

To fix your bike replace the clutch shaft complete with gears (it's a "sealed" assembly)

[quallman1234]

AJ is right. This is 3rd gear seizing onto the shaft. In the worst case it locks solid and of course pulling the clutch in doesn't save your butt. As Craig Shirriffs, he told me it was the nastiest highside he's ever had, all on a humble little RG 150. The fix is to use a top quality LOW viscosity gear oil about 100ml overfilled. So this, makes for 1100ml wet change, 1150 dry change. In the eraly days we had this strange noise in a few bike only on certain corners at Ruapuna. Using good oil and the extra 100ml has seen NO PROBLEM ever since, (we're talking 40 bikes over 2 years here!)

But keep an eye on foaming and catch bottle problems tho, we've had two with persistent foaming and overflow probs, acually a rider problem in the end.

To fix your bike replace the clutch shaft complete with gears (it's a "sealed" assembly)

Cheers for the help, could also be a bearing destroyed or possibly both. Will check it out and report back.

See you in the weekend.
-Kyle