njsmurf

Thank you for the reply i am running mod 2 with no timing but my gearing is well out i was running 35mm as it was the first time out with it then i went up to 37mm so will have to try yours and see how i get on
If i need a bit more wot should try as the 75 is all new to me!!!

chris_dono

I ran std mode 2 (other than brakes) and 38mm rollout with a 7t delta, so an 8t would definitely need to be higher !

njsmurf

That good to know i was not to far out then wot benefits do you find with running a delta over a stair wound??

chris_dono

I find them more powerful than the 'equivalent' star wind and smoother out of a corner.

njsmurf

Hi Chris
Do you run a sensor wire? As some say you should and some say not to
Ya i found that it feels like the car is more stable and consistent thought the power curve.
can't wait till next weekend meeting in Plymouth.

Are you running in the nats this year??

ghiro

+1
smoother all the powerband,not only when cornering.
Bought 4 different Delta wound motors since i've tried the first.

chris_dono

Hiya, yes i run it sensored

njsmurf

Just one more thing i striped my motor down today for a clean and its got a red ring rota in it but the replacements are black? I went to measure it but that did not end well
The mags are unreal Am i right in saying it should be 12.5mm

chris_dono

the red one is 12.5mm yes

Martin Hofer

there is 2 different 12.5 rotors! the ones with the red faceplate with a smaller inner diameter and therefore a stronger magnetic feel than the ones with a purple or silver-greyish faceplate, that have a bigger inner diameter (Efra Stock). The purple ones are super smooth and keep the motor temperatures a bit lower but overall also give you a bit less power

njsmurf

So would the purple rotor rev higher if geared right as there is less resistance from the magnet?

Martin Hofer

No.

Basically, if you need power, don'T use it unless you are force to, by regulations

njsmurf

That's grate to keep in mind its grate on here talking to people that know wot they are talking about
Thank you all i was getting a bit lost with it all just need to get some track time in now

008-Racer

Hi need a guide as to what gear ratios people are running there 17.5s at?

I am using the GM75 speedo with Martins basic setup on, on a small to medium high grip carpet track

My motor is the GM 97357 17.5?

chris_dono

isn't the silver/grey ring one 12.4mm ?