Search found 768 matches

by Darrell Taylor
Wed Nov 30, 2011 2:04 am
Forum: Lambretta Dyno Graphs
Topic: LAMBRETTA DYNO GRAPH POSTING AREA
Replies: 72
Views: 236519

Re: LAMBRETTA DYNO GRAPH POSTING AREA

SR185 KIT 15.2 BHP 11.5 TORQUE heres a dyno graph of an sr185 kit i recently ported its final set up was 15.2 bhp 11.5 torque running on a std jetex carb thru a std airbox and a low comp head theres still plenty left in it this is an early dyno run that i decided to run up from almost tickover in 3r...
by Darrell Taylor
Sat Nov 26, 2011 10:32 pm
Forum: Lambretta Tech
Topic: Pictures of Lambretta Super Monza Kit.....
Replies: 195
Views: 66568

Re: Pictures of Lambretta Super Monza Kit.....

lol,so lets back track a bit then ...what is it then that fills the boost bottle ? when a motor is out of phase and the reed valve is closed the intake charge continues and hits the back of the reed valve and bounces back ,this charge is then drawn in the next time the reed opens and presents the e...
by Darrell Taylor
Fri Nov 25, 2011 2:40 am
Forum: Lambretta Tech
Topic: Rapido 250 cylinder reed valved with triple boost port....
Replies: 32
Views: 12336

Re: Rapido 250 cylinder reed valved with triple boost port..

the dyno graph image has dissapeared or is it my pc ? ,could it be put on again or in the dyno posting area as was following this and was interested in the results thanks.
by Darrell Taylor
Wed Nov 23, 2011 7:01 pm
Forum: Vespa Tech
Topic: Gs 160 stage four tune
Replies: 23
Views: 10547

Re: Gs 160 stage four tune

ive only tuned 1 or 2 vespa cylinders but found a problem with widening the ex port due to the piston cut outs which would cause short circuiting of fresh charge straight out of the ex port ,i think 65% would be close to max on this type of piston but i generally base ex port width on the type of ri...
by Darrell Taylor
Sun Nov 20, 2011 3:55 pm
Forum: Vespa Tech
Topic: Gs 160 stage four tune
Replies: 23
Views: 10547

Re: Gs 160 stage four tune

as jonny said the transfers are too high in the example leaving insufficient blowdown id measure std transfers duration (? how many transfers) and add between 50 and 55 degrees for the exhaust based on your parts list eg if transfers 110 160 ex 110 165ex the deciding factor would be the areas achiev...
by Darrell Taylor
Sun Oct 09, 2011 6:20 pm
Forum: Lambretta Dyno Graphs
Topic: LAMBRETTA DYNO GRAPH POSTING AREA
Replies: 72
Views: 236519

Re: LAMBRETTA DYNO GRAPH POSTING AREA

IMOLA 186 28.22 BHP 18.68 TORQUE

heres another tuned imola on a 60 stroke this time ,30mm carb,std reed,jl fran,

28.22bhp 18.68 torque

Image
by Darrell Taylor
Sun Oct 09, 2011 6:11 pm
Forum: Lambretta Dyno Graphs
Topic: LAMBRETTA DYNO GRAPH POSTING AREA
Replies: 72
Views: 236519

Re: LAMBRETTA DYNO GRAPH POSTING AREA

MONZA 230 34.58 BHP 22.94 TORQUE

heres the graph drew2
have you tried it out on the road yet?

34.58 bhp 22.94 torque

Image