Search found 957 matches

by Knowledge
Sun Jan 18, 2009 11:29 pm
Forum: Lambretta Tech
Topic: How to profile a head
Replies: 16
Views: 3781

Re: How to profile a head

David, I picked up this very wide lump of machine steel and shaped it to a cylinder head contour. http://www.colchesterdvlc.co.uk/images_old/IMG_0201s.jpg The tool can be positioned in the tool-post at slightly different angles to suit pistons with different dome shapes. This saves having to re-grin...
by Knowledge
Sat Jan 17, 2009 12:43 am
Forum: Standard Scoots & Restorations
Topic: Bling! But chrome won't get you home
Replies: 10
Views: 2777

Bling! But chrome won't get you home

Some of you will be aware of this already, but I collected these today. http://www.colchesterdvlc.co.uk/images_old/Aerocoat%20chrome%20small.JPG Good chrome eh? Six bits for £40 and it will never need polishing. It's powder coat, that's why. Aerocoat between Gt Yarmouth and Lowestoft are the only p...
by Knowledge
Sat Jan 17, 2009 12:30 am
Forum: Lambretta Tech
Topic: Dems' da brakes
Replies: 7
Views: 1451

Re: Dems' da brakes

Reverse pull is not recommended for drum brakes. They tend to be too sharp (read: vicous). You'll do do well to file away at the highspots, re-fit and repeat. It might take three visits, but it should improve with (induced) wear. Watch out for asbestos, though new shoes are asbestos free. Mind you, ...
by Knowledge
Fri Jan 16, 2009 12:57 am
Forum: Lambretta Tech
Topic: RB25 (250) - Pictures & Spec....
Replies: 16
Views: 6212

Re: RB25 (250) - Pictures & Spec....

Another excellent write-up Dan, and some of the photos are the best I have seen taken in such a restricted space.

Well done
by Knowledge
Thu Jan 15, 2009 2:47 pm
Forum: Lambretta Tech
Topic: Nissin Brakes
Replies: 1
Views: 750

Re: Nissin Brakes

That's strange Frank, cos all mine come from the breakers down the road.
by Knowledge
Thu Jan 15, 2009 2:44 pm
Forum: Lambretta Tech
Topic: How do I know if....
Replies: 2
Views: 863

Re: How do I know if....

I suppose the easiest answer is that the SIII barrels, particularly the late ones, have noticably bigger transfers entering the top of the barrel. However, if you don't have two barrels to compare, this maybe difficult to gauge. The SI barrel used a piston with a lower compression height (the distan...
by Knowledge
Thu Jan 15, 2009 12:24 am
Forum: Lambretta Tech
Topic: RB20 (200cc) - Pictures and Spec
Replies: 79
Views: 26352

Re: RB20 (200cc) - Pictures and Spec

http://i6.photobucket.com/albums/y226/drunkmunkey6969/100120091540.jpg I notice from Dan's etching above, that the distance from the base of the transfers/exhaust port is 59mm. Hooray. It needs to be 58mm to match the stroke, but it is often 55mm on the RB22, leading to some really wild transfer ti...