Search found 119 matches
- Wed Feb 06, 2019 4:25 am
- Forum: Liquid Cooled, Motorcycle Engine & Automatics Section
- Topic: lambretta 290 rotax
- Replies: 198
- Views: 153232
Re: lambretta 290 rotax
At the expense of stealing Holty’s thunder, his new cylinder uses a vacuum actuated exhaust valve. The black plastic is the cover for the vacuum diaphragm. It’s a neat upgrade and should give his bike more bottom end.
- Sat Dec 15, 2018 5:48 am
- Forum: Vespa Tech
- Topic: 177cc/si20/20
- Replies: 2
- Views: 3727
Re: 177cc/si20/20
You can run it with a 20/20, no problem. The benefit of the larger carb would be to provide more air flow, and correspondingly, more fuel. This allows for higher RPMs and more speed. But with the smaller carb you would expect to see better throttle response and performance off the line. This is due ...
- Fri Jan 26, 2018 2:46 am
- Forum: Tech FAQ
- Topic: Lacking performance at top end
- Replies: 15
- Views: 6658
Re: Lacking performance at top end
As I said, the oil will smell burnt, depending on how long the plates have been slipping. But once you’ve drained the oil it would be pretty obvious and quite pungent. Also the corks may appear black or very dark brown, and sort of glazed and shiny. I consider plates and springs to be a pretty cheap...
- Thu Jan 25, 2018 3:56 pm
- Forum: Tech FAQ
- Topic: Lacking performance at top end
- Replies: 15
- Views: 6658
Re: Lacking performance at top end
Fwiw, I’m also thinking slipping clutch. So, you absolutely can have this problem only at high rpm. And the increased heat you describe would make sense as all the clutch is doing at that point is making a boat load of friction. Drain the oil. Does it smell burnt? Get your self a few more clutch pla...
- Wed Oct 25, 2017 1:33 am
- Forum: Liquid Cooled, Motorcycle Engine & Automatics Section
- Topic: lambretta 290 rotax
- Replies: 198
- Views: 153232
Re: lambretta 290 rotax
Maybe I missed it somewhere, but why do you have 2 fuel flaps?
Super build btw!
Super build btw!
- Fri Dec 23, 2016 6:45 pm
- Forum: Vespa Tech
- Topic: Going 12V with a '62 Sportique
- Replies: 2
- Views: 2164
Going 12V with a '62 Sportique
Righto, got a '62 Sportique that has a new loom. I want to go 12V and CDI instead of points I'm guessing I need a regulator for the lighting Is the Beedspeed kit any good ? https://www.beedspeed.com/vespa-electronic-supersprint-p-1675.html?osCsid=hk3u5ciaqjrpp5drcramifu3m0 https://www.beedspeed.com...
- Thu Mar 17, 2016 1:18 am
- Forum: Vespa Tech
- Topic: px longstroke 125cc
- Replies: 3
- Views: 2541
Re: px longstroke 125cc
Yeah, you'll be fine. I run a long stroke Pinasco. Originally it was on a 23/65 P200 combo, but it would struggle to accelerate well in 4th even with a short 4th gear. Iirc I dropped the clutch gear to a 22 and the 4th back to a 35 tooth gear. That's enough to keep it on the power even up steep hills.
- Fri Feb 05, 2016 4:56 pm
- Forum: Vespa Tech
- Topic: px longstroke 125cc
- Replies: 5
- Views: 3080
Re: px longstroke 125cc
You'll see an improvement stroking any of those cylinders. But it's not as if one is better than other as the cylinders are designed to produce power differently. I can only directly comment on the Malossi and Polini. The Malossi is a still a rev monster, if a bit less so and the Polini is quite a b...
- Wed Jan 13, 2016 3:49 am
- Forum: Show us yer Scoots!!
- Topic: NOS TS1
- Replies: 80
- Views: 45671
Re: NOS TS1
Very trick! It's nice to see it coming along.
- Sat Nov 28, 2015 6:51 pm
- Forum: Vespa Tech
- Topic: 1980 Vespa P200e electrical question
- Replies: 5
- Views: 3523
Re: 1980 Vespa P200e electrical question
Only the headlight runs AC.