SATARN PROJECT NUMBER 2 TZR250 3MA

[vinny]

Ah I see .
Interesting. 
I will keep my eyes open for a set of those
Cylinders for a future project .

[jools]

Hi

interesting project, I admire your dedication. So your crankshaft is stroked to 54mm ??

Have you tested your suspension movement on rear wheel/hugger clearance for those pipes ? It looks a bit close on the side on photo........

Jools

[satarn]

Yes crank is stroked to 54mm . When I get the bike of the bench my 17 stone friend will do the bounce on the seat to see how close the wheel gets to the exhausts . Have some adjustment in the shock or shorter dog legs . Had the same problem on a previous project with Jim Lomas pipes .

[satarn]

Wiring loom fitted and tested lights . Koso clocks fitted and programmed . Seat unit fitted . Custom radiator fitted . Fitted new nsr250 thermostat in housing . Waiting for Zeeltronic to turn up . Waiting for air box lower to turn up having butchered two trying to get fit around coolant pipe and hose of left hand cylinder head . Trimmed a couple of mm of pwk 35 carbs so they push more securely into the rubbers and matched the rubbers to the carbs so there is no step . Still a way to go before firing up .

[satarn]

Been a long time since I posted so thought I would update this project with some pics as now its more or less finished .

[satarn]

More pics

[satarn]

More pics

[Need4speed]

Well done - good work - did you achive intentions regarding engine performance?

[jools]

That looks very tidy and well put together. You should be very proud of the project.

[satarn]

Hi , sorry for the very slow reply . I have attached the dyno graph after the second visit . The bike ran well after the first set up but suffered mildly from fuel building up after slow running but cleared quite quickly when ridden more aggressively. So went back to the dyno with some carburation changes , smaller pilot and new needle and Boyesen reeds (dual petals) no reed stops . This cured the fuel building problem . We then added 4 degrees advance one degree at a time . Four degree advance made no gain over three degree advance so settled on that . So final set up is 81 bhp and 36.7 torque . The bike runs very well at all speeds and rips your arms off when your brave enough .