Broken cylinder skirt

Anything related to Lambrettas... ask tech questions, post helpful info, or just read and learn.
User avatar
vicvega
registered user
Posts: 133
Joined: Sat Jul 11, 2009 1:17 pm
Main scooter: Scomadi
Location: Sevenoaks
Contact:

You hear a lot about ali barrells getting relined but is there anything you can do with a cast iron barreel with a broken skirt. I've got a GT barrell that has cracked both vertically and horizontally on the skirt, is there anything I can do about this to get it repaired?
Cheers
alanscottj
registered user
Posts: 960
Joined: Fri May 23, 2014 6:54 pm
Main scooter: Lambretta GP SS250 Casa
Contact:

I have a Mugello 198 that I dropped, lost a huge chunk of the skirt but I've never had a problem with it :D
Lambretta Series 2 Rat - RB260, SuperTourer, Cyclone 5 gearbox 😎👍
User avatar
Rich_T
Dealer
Posts: 540
Joined: Fri May 29, 2009 8:07 pm
Main scooter: Li Special
Location: Birmingham
Contact:

post a picture, lets see.
User avatar
vicvega
registered user
Posts: 133
Joined: Sat Jul 11, 2009 1:17 pm
Main scooter: Scomadi
Location: Sevenoaks
Contact:

Image

Image

Image

Hope these are clear enough to see, there is a crack in a capital T shape, hope I posted pics properly.
rosscla
registered user
Posts: 4823
Joined: Tue Oct 25, 2011 9:50 pm
Main scooter: Lambretta
Location: Lanarkshire
Contact:

Don't see why you couldn't just machine it round just above the crack
"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."
bristolmod
registered user
Posts: 1741
Joined: Wed Jan 07, 2009 8:42 am
Main scooter: Lambretta TV175 S3- what else!
Location: Bali-Hai bar, Locarno Ballroom Bristol, 1967!- mines a Brown Split!!
Contact:

I've done that before right up to the "step"- no problems in running at all.

Chris
Scootering since 1968.
User avatar
vicvega
registered user
Posts: 133
Joined: Sat Jul 11, 2009 1:17 pm
Main scooter: Scomadi
Location: Sevenoaks
Contact:

Cheers fellas that's good to know. Thought I was gonna have to scrap it.
User avatar
Rich_T
Dealer
Posts: 540
Joined: Fri May 29, 2009 8:07 pm
Main scooter: Li Special
Location: Birmingham
Contact:

That's and interesting break how did it happen? It should be OK to grind the crack into a slot with a radius at the end to stop the crack propagating. I've seen iron barrels run with big chunks of skirt missing so as long as you've resolved the original issue and there is no likelihood of a piece breaking off then you should be OK.
jimmers
registered user
Posts: 86
Joined: Sat Jan 10, 2009 8:01 pm
Contact:

Has anyone tried and been successful with the cast iron stitch welding they do? Is it cost effective or better to just replace?
User avatar
Rich_T
Dealer
Posts: 540
Joined: Fri May 29, 2009 8:07 pm
Main scooter: Li Special
Location: Birmingham
Contact:

I would not recommend it at all. You build up a lot of heat stress particularly in thing sections, if it were a car engine block maybe.
Post Reply Previous topicNext topic
  • Information
  • Who is online

    Users browsing this forum: Semrush [Bot] and 12 guests