Search found 135 matches

by chris2470
Sun Mar 17, 2013 8:04 am
Forum: Lambretta Tech
Topic: Exhaust options
Replies: 16
Views: 4348

Re: Exhaust options

10 inch Terror wrote:NK for me mate. I've just changed from the Franspeed and the NK has transformed my Scoot. Fits really well and sounds superb. Cheaper by a fair bit too...
Is this the NK Rally or the Race version ?
by chris2470
Tue Feb 19, 2013 8:32 am
Forum: Lambretta Tech
Topic: Shimming the Gearbox
Replies: 4
Views: 1352

Shimming the Gearbox

Just a quick question. At some point before the MOT I need to take the slack out of the gearbox & the end plate by fitting a larger shim but I think it now may be up near 3mm. During this process is it permissible to fit a combination of 2 shims to get this correct i.e, 2 x 1.5mm shims rather th...
by chris2470
Thu Feb 14, 2013 7:44 am
Forum: Lambretta Tech
Topic: porting steel barrel
Replies: 29
Views: 7281

Re: porting steel barrel

I've always used a ratio of 62% of the bore diameter, measuring straight across the port. A 70mm 225 will be a sensible 43.4mm wide.
I believe 65% size refers to around the bore.
Others may stand me corrected.
by chris2470
Sun Jul 22, 2012 9:01 pm
Forum: Carburettor Set-ups
Topic: Stock Stage 4+Pwk28/30+JL3
Replies: 1
Views: 1661

Re: Stock Stage 4+Pwk28/30+JL3

Hi Mate, I've run this exact setup on 2nd clip with JJK needle which is slightly leaner at 1/4 throttle for 2 years no problems. I would start with what you have and see how it feels, gut feel it i may be a tad boggy low down. One thing to watch with the OKO, it has a small stand up float stop in th...
by chris2470
Thu Jun 14, 2012 7:24 am
Forum: Lambretta Dyno Graphs
Topic: A BIT OF SIL 200 TUNING
Replies: 23
Views: 23745

Re: A BIT OF SIL 200 TUNING

Darrell Taylor wrote:heres the piston window i added
Image
Hi Darell, I hope you don't mind me asking but is this piston at BDC ?
by chris2470
Fri Jun 08, 2012 7:23 am
Forum: Lambretta Tech
Topic: How to cut piston Windows.
Replies: 8
Views: 5112

How to cut piston Windows.

Does anybody know the best or safest way possible to cut some windows into a piston. I've also seen many types, from 2 oval or round holes to a single hole, any advice on this will also be greatly received, thank you.
by chris2470
Sat Apr 28, 2012 4:59 pm
Forum: Lambretta Tech
Topic: rapido/reedvalve advice
Replies: 11
Views: 4555

Re: rapido/reedvalve advice

Of course it will run, but better off selling the TS1 piston, get a Avanti or 1mm Asso & cut in the windows to match the inlet.
by chris2470
Thu Apr 05, 2012 1:38 pm
Forum: Lambretta Tech
Topic: Ring gap please
Replies: 8
Views: 2316

Re: Ring gap please

An easy way to remember is approx 0.1mm per Inch/25mm of bore.
by chris2470
Sat Dec 10, 2011 9:44 pm
Forum: Lambretta Tech
Topic: koso 28mm -setup
Replies: 10
Views: 4158

Re: koso 28mm -setup

I have run a scootrs one of these for years, I'd recommend 118 main and 40 pilot on a standard 200. Needle will be a JJK 2nd clip.