setting up mtec

[sjc]

im in the process of fitting a chiselspeed mtec,,any pointers for a set up for a standard ts1 225,,runnin a 35 mikuni tmx,,franspeed 3 pipe,,any help fully appreciated ,,cheers steve..

[ducksta]

any ideas lads as my m8 fitting one at present

[gadgetman]

Best idea take it back to Chiselspeed and pay Martin to set it up !

[drunkmunkey6969]

I like the Chiselspeed m-tech unit as it has so many variable settings. When i first got mine, i fitted it, fired the race scooter up on the dyno, attached the strobe gun and did something like a dozen or more back-2-back runs.

I just kept the motor running and clicked through each setting, whilst monitoring the strobe marks, dyno graphs, and cylinder temperatures for each one. You can see the strobe marks change as you click each setting, so you can pick the one that suits your engine best.

Although some people like to use these units to 'gain bottom end'....and set static at approx 25 deg, to tick over at 22/23-ish, and to fully retard to about 18-ish (depending on engine setup and ign unit used)......i feel that it generates too much heat at bottom end and low rev riding, and contributes heavily to piston holes etc.

I ended up running my race engine at 19 static, 17 tickover and approx 10 fully retarded at 10k rpm. Most 'fast road' scooters i set up are set at approx 21/19/12 degrees respectivly. With this, you can litterally screw the c**t out of the scooter and then park up and put your hand on the cylinder cowl and it will be a nice temperature, even on cast iron cylinders.....ask Lam46.

The lads that i dynoed for the coast 2 coast meeting (Philly Hindle, James Chrichton etc) all have their variotronics set (by Jimmy) to come back to 12 degrees, and those guys finished in the top 5. It puts all the heat into the exhaust and keeps the top end cool.

Too much advance at high RPM kills revs and generates heat as the power cycle is fighting against the early spark/ignition.....reducing that lead time encourages a higher RPM limit and reduces heat build up.

[ducksta]

cheers m8

[byron]

cheers m8

yes, nice explanation thanks.
a mate has just got one of these, be interesting to see how he gets on with it. Having read some threads on here and LCGB recently, I am definitely going to retard my timing, I have an Agusto at the moment, which goes back to about 15 at higher revs, but, by all accounts, I can go back a couple more degrees without the losing bottom end punch; which will help if i'm not caning it