Search found 149 matches

by Chris CSPE
Sun Apr 07, 2013 6:29 pm
Forum: Lambretta Tech
Topic: Croft
Replies: 19
Views: 1900

Croft

Congratulations to Darrell Taylor and Joe Ravenscroft with 3 out of 4 wins this weekend on the group six Lambretta. Great result for there first race meeting. :-)
by Chris CSPE
Fri Oct 12, 2012 7:53 pm
Forum: Lambretta Tech
Topic: Lambretta Boost Port & Cylinder Scavenging
Replies: 62
Views: 15116

Re: Lambretta Boost Port & Cylinder Scavenging

Is that it!!!!!!!!! Lol
by Chris CSPE
Fri Oct 12, 2012 7:49 pm
Forum: Lambretta Tech
Topic: 225 TO 230
Replies: 9
Views: 1459

Re: 225 TO 230

Best advice is to give Darrell Taylor a message on here, 60 mil crank and a good tune should be around 30 hp and over 20ftlbs depending on exhaust and carb, from low revs and not a high rever either. :-)
by Chris CSPE
Thu Oct 11, 2012 12:47 am
Forum: Lambretta Tech
Topic: Lambretta Boost Port & Cylinder Scavenging
Replies: 62
Views: 15116

Re: Lambretta Boost Port & Cylinder Scavenging

Wot benefit is gained by having the boost port open before or at the same time as the main and secondary transfer ports??
by Chris CSPE
Thu Oct 11, 2012 12:38 am
Forum: Lambretta Tech
Topic: Advice about crack in casing
Replies: 6
Views: 1011

Re: Advice about crack in casing

Nothing to worry about, it's just a thin part of the case that won't prove a problem.
by Chris CSPE
Wed Oct 10, 2012 11:57 pm
Forum: Lambretta Tech
Topic: Lambretta Boost Port & Cylinder Scavenging
Replies: 62
Views: 15116

Re: Lambretta Boost Port & Cylinder Scavenging

sean brady scooters wrote:lol,now we are getting into the use of flat top pistons like KTM etc use
Really!! That's not wot I've used.
by Chris CSPE
Wed Oct 10, 2012 10:33 pm
Forum: Lambretta Tech
Topic: Lambretta Boost Port & Cylinder Scavenging
Replies: 62
Views: 15116

Re: Lambretta Boost Port & Cylinder Scavenging

Wot about the angle of the piston crown and the effect it has on every degrees of opening of the boost port and not just a straight flow into the cylinder.
by Chris CSPE
Thu May 17, 2012 1:56 am
Forum: Show us yer Scoots!!
Topic: New RB Ceramic 230cc Engine
Replies: 69
Views: 10043

Re: New RB Ceramic 230cc Engine

Its possible with some of the group 6 scooters, over 100mph has been seen more then a few times, and as Eden pointed out the drag on a full frame is quite considerable. I know Stiky's bike engined scooter does high end of 30hp and I think that gets to around 96mph (a real 96mph).
by Chris CSPE
Wed May 16, 2012 8:43 pm
Forum: Show us yer Scoots!!
Topic: New RB Ceramic 230cc Engine
Replies: 69
Views: 10043

Re: New RB Ceramic 230cc Engine

Most high powered scooters with full bodywork will top out at under 100mph, not because they haven't got enough power but because the shape of the front end won't allow it to, IMO you'd have to have 40+hp to achieve it.
by Chris CSPE
Mon May 14, 2012 11:25 am
Forum: Show us yer Scoots!!
Topic: New RB Ceramic 230cc Engine
Replies: 69
Views: 10043

Re: New RB Ceramic 230cc Engine

The one thing to bare in mind is that this kind of power is achieved without the kneed of welding casings and barrels to create bigger transfers or crank case boost ports which seams to be the norm with most tuning jobs these days. Infact the only welding that's done is to RB Barrels. For me working...