Search found 277 matches

by jonny snatchsniffer
Mon May 06, 2019 4:51 pm
Forum: Vespa Tech
Topic: Pwk ballpark jetting?
Replies: 10
Views: 2705

Re: Pwk ballpark jetting?

pwk copies are best left alone as they are shite, some work some dont, invest yr money on a proper keihin pwk, the 28mm ones come off yam rd's of which you need the right hand one try allens performance as they have loads of stuff for keihin carbs and the carbs themselves. keihin main jets are the s...
by jonny snatchsniffer
Mon May 06, 2019 4:25 pm
Forum: Vespa Tech
Replies: 17
Views: 5539


yes ive used one recently, i got the 58mm stroke version, i too had trouble with the squish, the lowest i could get it was 2.1mm which was without base or head gasket, 2.1mm squish would have been s**t, and the transfer timing was way to low at around 115 degrees, after an arguement with sip over wh...
by jonny snatchsniffer
Fri Jun 06, 2014 4:59 pm
Forum: Lambretta Tech
Topic: PHBL 26mm jetting starting point
Replies: 19
Views: 5949

Re: PHBL 26mm jetting starting point

yeah the 26phbl does use D needles and the aq atomiser, d22, d26 and aq264 is a good start
by jonny snatchsniffer
Fri May 09, 2014 7:10 pm
Forum: Vespa Tech
Topic: Dellorto PHBH Carburettor
Replies: 30
Views: 6234

Re: Dellorto PHBH Carburettor

if it gets richer and richer as you sit there idling then it could be the float valve letting by, wrong float height or crap not letting the valve seat propperly, and also spitback from the reeds collects and can richen things up
by jonny snatchsniffer
Tue Mar 25, 2014 5:34 pm
Forum: Vespa Tech
Topic: crank for DR 130
Replies: 1
Views: 764

Re: crank for DR 130

have a look at the bgm cranks at scooter centre koln
a small taper crank wouldnt be my first chioce as the tend to snap no matter the make, maybe safer with a 1kg flywheel
by jonny snatchsniffer
Sat Nov 09, 2013 3:05 pm
Forum: Vespa Tech
Topic: smallframe primary gears
Replies: 2
Views: 927

Re: smallframe primary gears

i wouldnt use the 90 primarys as they are far too short, the primmy/pk125 primarys will be fine, they are 24/61, another option is 27/69, a little shorter than 24/61
by jonny snatchsniffer
Sun Oct 20, 2013 12:50 pm
Forum: Vespa Tech
Topic: smallframe setup
Replies: 4
Views: 1394

Re: smallframe setup

the parma kit needs a lot of work but its ok ish i had the exhaust timing up to 190 but it wasnt quite enough, its a basic design based on an old pinasco barrel, i now use a polini evo rotary with a 35mm keihin and franz pipe, and it will sit at 70 at around 8000rpm and rev out to 9500rpm with my he...
by jonny snatchsniffer
Mon Sep 30, 2013 8:33 pm
Forum: Lambretta Tech
Topic: Another Holed imola Piston....AAaargh
Replies: 23
Views: 4323

Re: Another Holed imola Piston....AAaargh

pwk copies are hit and miss too
by jonny snatchsniffer
Sat Sep 21, 2013 12:55 pm
Forum: Lambretta Tech
Topic: Lightened Flywheels
Replies: 7
Views: 1151

Re: Lightened Flywheels

its not just about weight either, the circumference also plays a part, so 2 kg closer to the center will spin up faster
by jonny snatchsniffer
Thu Sep 19, 2013 9:08 pm
Forum: Vespa Tech
Topic: Can it run ok
Replies: 7
Views: 1497

Re: Can it run ok

:D you may have put weight on, i found my smallie get progressively slower cos of this