RB250 SCOOTER SHOOTOUT MOTOR

Post your Lambretta dyno graphs here! But graphs & spec info only, keep the chat in the 'dyno chat' section ;o)
User avatar
corrado
Dealer
Posts: 2588
Joined: Thu Jan 08, 2009 1:12 am
Main scooter: Lambretta GP
Location: Top of Blackpool Tower
Contact:

Would using a different piston [if one was available] with 30mm CHP, to suit the 116 rod, have the same effect?
User avatar
drunkmunkey6969
Moderator
Posts: 2838
Joined: Sun Jan 04, 2009 1:42 pm
Main scooter: '69 Lambretta GP
Location: North Yorkshire
Contact:

No. You'd benefit from usual long rid, side thrust attributes etc, but lose the volume under the piston and within the packer area without the packer plate.
See our YouTube scooter channel for Tech-help: https://www.youtube.com/c/TheScooterFactory/videos
User avatar
drunkmunkey6969
Moderator
Posts: 2838
Joined: Sun Jan 04, 2009 1:42 pm
Main scooter: '69 Lambretta GP
Location: North Yorkshire
Contact:

Darrell Taylor wrote:heres some graphs from today against yesterdays best
i then played with ignition and found an extra 1 bhp but did so on larger main jet so will try the smaller jet back in tomorrow hopefully 47.4 + 1 =48.4 but quite often u need to fuel the advance so maybe not?
still so much to try,i have different petals both thickness and weave,boyessen stuffing,more port adjustments,compression adjustments,flywheel lightening,different carbs,carb mods,intake tract lengths,plug grades and types as well as a few pipes to test and pipe tricks

then i have to start again with the 72mm ts1 version ive just finished

Image

I get lost with all the different graphs and motors etc.....is this the engine which is in the grp 6 that Joe rides, the one you'll be bringing to the dyno shootout?
See our YouTube scooter channel for Tech-help: https://www.youtube.com/c/TheScooterFactory/videos
Post Reply Previous topicNext topic
  • Information
  • Who is online

    Users browsing this forum: No registered users and 0 guests