Search found 830 matches

by holty
Thu Apr 04, 2019 9:42 pm
Forum: Liquid Cooled, Motorcycle Engine & Automatics Section
Topic: lambretta 290 rotax
Replies: 184
Views: 30514

Re: lambretta 290 rotax

im just running it in at the moment, by the time I get back from knarseborough it will be, I quite liked the idea of the valve been self governing, but I see how a programmable ecu would be of benefit, im looking forward to getting the big carb on and getting it on martins rolling road and see what ...
by holty
Tue Apr 02, 2019 9:27 pm
Forum: Show us yer Scoots!!
Topic: Little Beastie
Replies: 41
Views: 3298

Re: Little Beastie

Booked in for a dyno session at Wilkinson Racing on 27th April. Anyone like to guess what power a 100cc auto engine can make? A half eaten fish finger sandwich to the nearest max bhp 😂😂 im going to guess first and say 28 bhp. I am probably to low but hey ho, great job by the way, I recon its going ...
by holty
Tue Apr 02, 2019 12:45 pm
Forum: Lambretta Tech
Topic: AFR Fresco endcan
Replies: 2
Views: 238

Re: AFR Fresco endcan

tsr evo end cans are easy to adapt as the end that has the 3 threaded holes is 10mm thick aluminium so you can re-do the holes inbetween the original holes and re-tap
by holty
Thu Mar 14, 2019 9:43 am
Forum: Lambretta Tech
Topic: Mag flange
Replies: 38
Views: 2559

Re: Mag flange

good choice, anthonys parts are top notch, he can offer you good advice if you need it as well.
by holty
Mon Mar 11, 2019 10:51 am
Forum: Vespa Tech
Topic: Squish too large?
Replies: 5
Views: 630

Re: Squish too large?

I don't think its too much of an issue for vespas, but lml parts are made in india and are not made to the same high standard, that said ive got a mate with a 5 port 150 and it goes well, a little bit of lathe work will soon get your squish to a better size, a good machine shop should be able to sor...
by holty
Sun Mar 10, 2019 9:42 am
Forum: Vespa Tech
Topic: Squish too large?
Replies: 5
Views: 630

Re: Squish too large?

I would machine the head to get down to 1.2 mm, you could machine the top of the barrel instead, but head is easier to do.
by holty
Tue Mar 05, 2019 5:33 pm
Forum: Show us yer Scoots!!
Topic: Little Beastie
Replies: 41
Views: 3298

Re: Little Beastie

yeah some great work there, love the welding its so tidy, wish I could tig weld, well done.
by holty
Sat Mar 02, 2019 9:16 am
Forum: Lambretta Tech
Topic: which are the strongest lambretta clutch springs
Replies: 23
Views: 761

Re: which are the strongest lambretta clutch springs

We used to say "Chrome won't get you home" but bling has taken over. Back to the plot: The strongest springs I have, going on the wire diameter of 2.25 mm, are seven turns, free length 31 mm & coilbound 19 mm. I've never used them as they need a lead/chamfer adding to the recesses of the clutch com...
by holty
Thu Feb 28, 2019 10:51 pm
Forum: Lambretta Tech
Topic: which are the strongest lambretta clutch springs
Replies: 23
Views: 761

Re: which are the strongest lambretta clutch springs

Happens so often that I can see it being an issue with your beast of a motor. This feel exactly like clutch slip, becoming an issue when working under load. Back off and the motor gets some traction back. Open the throttle and it starts to slip again. yeah just as you describe, when the powervalve ...
by holty
Thu Feb 28, 2019 10:23 pm
Forum: Lambretta Tech
Topic: which are the strongest lambretta clutch springs
Replies: 23
Views: 761

Re: which are the strongest lambretta clutch springs

yeah good call adam, I am pretty sure its clutch slip, but when I have it stripped I will reduce the height of the sleeve by a couple of mm and that will increase the loading of the spring, its easy to do when the side case is off.