Gearbox Mashed Up. Use Vijay Super MK2 as Replacement?

Anything related to Lambrettas... ask tech questions, post helpful info, or just read and learn.
Starwave
registered user
Posts: 105
Joined: Fri Jan 08, 2010 5:50 pm
Contact:

Hello

Took my engine apart as the clutch was playing up.
The gear cluster is destroyed where it runs in the needle bearing and the needle bearing has been smashed into dozens of little unidentifiable pieces. The ball bearing in the endplate is obviously well sh@gged too after having a wobbly clutch and gear cluster.
The gearbox is / was an Italian GP200 and I'm using a 46T clutch sprocket and a 19T drive sprocket which gives the ratios to suit the motor. I doubt I will be able to get hold of a decent Italian GP200 Christmas tree for less than 5 million pounds so I need an alternative. Now lurking in me shed is a complete gear box (4 x loose gears, the gear cluster and a 15T drive sprocket) from a Vijay Super MK2.
In standard form (46/15) the ratios are a bit different in 1st, 2nd and 3rd to what my GP200 with 46/19 gives me but the 4th gear ratio is pretty well bang on the same.

Anyone know of any reasons not to use this gearbox? The name is great so it must be good.
Not sure why the needle bearing and cluster ate themselves. Think once they start to go and the hardened surface has worn through it's all over pretty quickly.

Any help, advice or words of wisdom gratefully received. I'd like to be riding again asap.
Cheers.
Starwave
registered user
Posts: 105
Joined: Fri Jan 08, 2010 5:50 pm
Contact:

<a href="http://www.flickr.com/photos/80640990@N02/7393383728/" title="Photo0698 by Mangleswaithe, on Flickr"><img src="http://farm6.staticflickr.com/5337/7393 ... a70839.jpg" width="500" height="375" alt="Photo0698"></a>
rosscla
registered user
Posts: 4823
Joined: Tue Oct 25, 2011 9:50 pm
Main scooter: Lambretta
Location: Lanarkshire
Contact:

I think MB do a replacement track for repairing that sort of damage...won't be cheap but might be worth it to salvage your box...I can't find it on their website worth a phone call though
"Our dilemma is that we hate change and love it at the same time; what we really want is for things to remain the same but get better."
rosscla
registered user
Posts: 4823
Joined: Tue Oct 25, 2011 9:50 pm
Main scooter: Lambretta
Location: Lanarkshire
Contact:

"Our dilemma is that we hate change and love it at the same time; what we really want is for things to remain the same but get better."
Starwave
registered user
Posts: 105
Joined: Fri Jan 08, 2010 5:50 pm
Contact:

Yeah, cheers. May have a look at that. Problem is though that the bearing track on the cluster isn't worn - it's fookin mullered!

[img][img]http://farm6.staticflickr.com/5038/7393 ... 85ec36.jpg[/img]
Photo0702 by Mangleswaithe, on Flickr[/img]
User avatar
TED CRUD
registered user
Posts: 261
Joined: Sun Jul 04, 2010 7:31 pm
Contact:

Starwave wrote:Yeah, cheers. May have a look at that. Problem is though that the bearing track on the cluster isn't worn - it's fookin mullered!

[img][img]http://farm6.staticflickr.com/5038/7393 ... 85ec36.jpg[/img]
Photo0702 by Mangleswaithe, on Flickr[/img]

That is Proper F**ked :shock:
Smash Ya Pastie
Washington Posse s.c
https://www.youtube.com/watch?v=ZrBpNEjkuLY
User avatar
wack 63
registered user
Posts: 1254
Joined: Fri Nov 27, 2009 9:33 pm
Main scooter: '71 GP TS1
Location: Lincs
Contact:

I should be able to repair it if you get stuck,what does the worn stub measure (thickness)?
Starwave
registered user
Posts: 105
Joined: Fri Jan 08, 2010 5:50 pm
Contact:

Thanks for the link to the MB repair part. Just ordered one and will get the cluster turned down to suit here at work.
If I make it a decent fit and use some Loctite retainer (648) it should be good to go. If it doesn't go to plan I will certainly consider Wack 63's offer to repair it. Thank you. The diameter of the track has been cleaned up to about 13.3mm. Think it needs to go down to about 12mm for the repair bush, will find out when it arrives.
Still have a gearbox from a top sounding Vijay Super MK2 for backup too.

Cheers
PS Check out what was left of the bearing....that was as I found it when I removed the gear cluster. Not sure the pics upload properly though, just seems to paste a link. I struggle with pretty well everything technoid, the telly remote has way too many buttons for a start.

[img][img]http://farm6.staticflickr.com/5271/7393 ... 2a8e7c.jpg[/img]
Photo0703 by Mangleswaithe, on Flickr[/img]
Post Reply Previous topicNext topic
  • Information
  • Who is online

    Users browsing this forum: Google [Bot] and 18 guests