Search found 10 matches
- Thu Jul 24, 2014 7:47 pm
- Forum: Tech FAQ
- Topic: HELP! Lambretta Gearbox noise
- Replies: 27
- Views: 15552
Re: HELP! Lambretta Gearbox noise
We have come to the conclusion after 14 gearbox/clutch rebuilds it's time to give in!!! We are no further forward with it from the first rebuild!!! I have put back in my original 150pacemaker engine and taken out the rebuilt 200, and will have to give it another go at a later day!!!! :cry: Oh well!!...
- Sun Jul 20, 2014 2:51 am
- Forum: Tech FAQ
- Topic: HELP! Lambretta Gearbox noise
- Replies: 27
- Views: 15552
Re: HELP! Lambretta Gearbox noise
Gears are quite tight on layshaft - we have tried various layshafts too!!!
sT90'in gear box too

sT90'in gear box too

- Sat Jul 19, 2014 6:08 pm
- Forum: Tech FAQ
- Topic: HELP! Lambretta Gearbox noise
- Replies: 27
- Views: 15552
Re: HELP! Lambretta Gearbox noise
Just to add, it's got a Brand new top end, bearing seals crank barrel piston, new top chain guide too!!!!
- Sat Jul 19, 2014 6:03 pm
- Forum: Tech FAQ
- Topic: HELP! Lambretta Gearbox noise
- Replies: 27
- Views: 15552
Re: HELP! Lambretta Gearbox noise
We have had the gear box in and out a total of 14 times now!!!! Ok, we changed the hub bearing, we have tried every shim from 2mm to 2.8mm, new phosphor bronze bush, new end plate, bearing, new needle roller bearings,tried various gearboxes, new chain, tightened front sprocket, new clutch, tried old...
- Wed Jul 09, 2014 11:19 pm
- Forum: Tech FAQ
- Topic: HELP! Lambretta Gearbox noise
- Replies: 27
- Views: 15552
Re: HELP! Lambretta Gearbox noise
Hi Doom, I have thought this as I have metal chain guides with rubber
Silencing material on them, not Nylon type?? However these were in engine before
Rebuild and I didn't have this noise?? Only thing I've not replaced
Is the layshaft??
Silencing material on them, not Nylon type?? However these were in engine before
Rebuild and I didn't have this noise?? Only thing I've not replaced
Is the layshaft??
- Wed Jul 09, 2014 11:08 pm
- Forum: Tech FAQ
- Topic: HELP! Lambretta Gearbox noise
- Replies: 27
- Views: 15552
Re: HELP! Lambretta Gearbox noise
Still no better - I'm sat here stumped now!!
I can't physically build the gear box any different? New bearings too!!
What a ball ache this has become!!!
I can't physically build the gear box any different? New bearings too!!
What a ball ache this has become!!!

- Wed Jul 09, 2014 9:25 pm
- Forum: Tech FAQ
- Topic: HELP! Lambretta Gearbox noise
- Replies: 27
- Views: 15552
Re: HELP! Lambretta Gearbox noise
I'm going to change the chain and tighten it on the guides a bit more check alignment - it's definitely not the kick start teeth engaging on gear either just to narrow the issue down!!
- Wed Jul 09, 2014 9:18 pm
- Forum: Tech FAQ
- Topic: HELP! Lambretta Gearbox noise
- Replies: 27
- Views: 15552
Re: HELP! Lambretta Gearbox noise
And when I Mean start, as in scooter starts and on tick over!!!!
- Wed Jul 09, 2014 9:18 pm
- Forum: Tech FAQ
- Topic: HELP! Lambretta Gearbox noise
- Replies: 27
- Views: 15552
Re: HELP! Lambretta Gearbox noise
Yes the usual disappears when clutch in - I've built loads of engines and I've either been lucky to never come across this, or something is drastically wrong??
- Wed Jul 09, 2014 8:49 pm
- Forum: Tech FAQ
- Topic: HELP! Lambretta Gearbox noise
- Replies: 27
- Views: 15552
HELP! Lambretta Gearbox noise
Hi all, SX 200 casing with new rear hub bearing - Layshaft in, SX200 gearbox, new roller bearing and shim under Christmas tree, Gears in correct way and sit appropriately higher than the layshaft, shim and end plate roller bearing new, and large end plate bearing new, gear shim 2.5mm, with correct a...