Search found 146 matches

by onthelam
Mon May 14, 2018 7:42 am
Forum: Paint & Bodywork Tech
Topic: Polishing alloy parts
Replies: 4
Views: 1221

Re: Polishing alloy parts

Doom Patrol wrote:
Sun May 13, 2018 12:22 pm
It sounds like an art to me,
Correct
When I worked in the dairy/brewery construction industry the highest paid tradesmen on the site were the polishers. They polished the insides of the welded pipe joints to make them all shiny and capable of being sterilized. The welding was done by machine.
by onthelam
Sun May 13, 2018 6:59 am
Forum: Paint & Bodywork Tech
Topic: Polishing alloy parts
Replies: 4
Views: 1221

Re: Polishing alloy parts

To look like this? https://www.picclickimg.com/d/l400/pict/183144828716_/Lambretta-Gp-Polished-Head-Set-Top-Chrome.jpg From the picture you would get similar results by painting it with chrome paint. Answer: You need a source of hi-speed rotation. Bench grinder, die grinder, some cloth polishing whe...
by onthelam
Fri Apr 27, 2018 2:59 am
Forum: Tech FAQ
Topic: Standard everything except
Replies: 10
Views: 1557

Re: Standard everything except

I believe with some fettling and a reverse cable set up a std. drum brake can be made to do a "stoppie" so my answer would be get the most out of the std. set up and then see.
by onthelam
Tue Apr 03, 2018 9:21 am
Forum: Lambretta Tech
Topic: Exhaust spraying options
Replies: 15
Views: 1130

Re: Exhaust spraying options

Loaded. Do you have a pressure washer? For about 40 quid you can buy a water blasting attachment and blast stuff yourself.
by onthelam
Mon Apr 02, 2018 2:56 am
Forum: Lambretta Tech
Topic: Trouble starting
Replies: 18
Views: 1018

Re: Trouble starting

Any thing like this?



Sorry just coincidental i saw this today on TV.
by onthelam
Fri Mar 30, 2018 8:03 am
Forum: Lambretta Tech
Topic: Having a pub "discussion" about top speed
Replies: 12
Views: 1113

Re: Having a pub "discussion" about top speed

Yes gearing and whether the engine is allowed to achieve its potential and aerodynamics.

Ok I'll add 63 to the list
by onthelam
Fri Mar 30, 2018 6:35 am
Forum: Lambretta Tech
Topic: Having a pub "discussion" about top speed
Replies: 12
Views: 1113

Re: Having a pub "discussion" about top speed

:idea: That is what the bible says... If i put all the bible numbers into a spread sheet they all come out more of less at the same drag coefficient. Except SIL 200 which I assume is the exception that proves the rule. :lol: And the SX150 which I assume is geared low. :?: So if a Lambretta with =/-1...
by onthelam
Fri Mar 30, 2018 5:06 am
Forum: Lambretta Tech
Topic: Having a pub "discussion" about top speed
Replies: 12
Views: 1113

Having a pub "discussion" about top speed

What is the top speed of a Lammy 200 in standard form. Say a GP 200.
by onthelam
Wed Mar 28, 2018 3:59 am
Forum: Liquid Cooled, Motorcycle Engine & Automatics Section
Topic: lambretta 290 rotax
Replies: 165
Views: 22345

Re: lambretta 290 rotax

OK just needs a bit of grinding and a lick of paint.
by onthelam
Sat Mar 10, 2018 10:22 am
Forum: Lambretta Tech
Topic: Striped barrel stud
Replies: 17
Views: 1055

Re: Striped barrel stud

I am OK with your opinion but I fail to see how drilling out and taping to a larger sized thread is "messing around" We still have to drill out the original hole larger 8.3 for the insert and 5/16 or 7.9 for the larger thread. ( two stages? 7.5mm then 7.9) Surely welding and re-taping is more "messy...