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[Arct1k]

Its just dynamic timing advance as I see it but not sure why this still isn't possible under sensorless operation to...

[Semi Pro]

Originally Posted by Arct1k

Its just dynamic timing advance as I see it but not sure why this still isn't possible under sensorless operation to...

dynamic timing advance doesn't work on the rx8 without the sensor plugged in, i think sensorless is always dynamic up to your set max

i agree i would love to here what Patrick or one of the other engineers has to say about it

[whitrzac]

Originally Posted by Semi Pro

dynamic timing advance doesn't work on the rx8 without the sensor plugged in, i think sensorless is always dynamic up to your set max

i agree i would love to here what Patrick or one of the other engineers has to say about it

the RX8 does not have the same type of timing advance as the RS/MMp, hence the reason I sold my RX8

[Pdelcast]

Originally Posted by Arct1k

Its just dynamic timing advance as I see it but not sure why this still isn't possible under sensorless operation to...

Dynamic timing does happen sensorless -- but above about 30 degrees of electrical advance, there just isn't enough back-EMF information to allow more timing.

With sensors, you can advance the timing more aggressively than you can sensorless. It's MUCH MUCH harder on the motor and ESC, but in stock class racing, can make all the difference.

I wouldn't try it on a high quality motor, just the junk they run in ROAR stock.

[snellemin]

Originally Posted by Pdelcast

I wouldn't try it on a high quality motor, just the junk they run in ROAR stock.

Originally Posted by Pdelcast

I wouldn't try it on a high quality motor, just the junk they run in ROAR stock.

Well said Patrick. You must be an a particularily nasty mood today.

[Pdelcast]

Originally Posted by FastXR

Well said Patrick. You must be an a particularily nasty mood today.

LOL, what I meant to say was:

High quality motors don't need a lot of timing to perform well.

[Semi Pro]

Originally Posted by Pdelcast

LOL, what I meant to say was:

High quality motors don't need a lot of timing to perform well.

you know you could prove to the world how good CC is and make us some roar aproved motors and change up the game untill everyone else catches up again.

then we wouldnt have to race with red and bash with green



quick thred jack while i am here



can the MM handle 144300rpm or are the shudders comeing from the poor motor

sadly the motor is running pretty cool for being that far over voltage

[Pdelcast]

Originally Posted by Semi Pro

you know you could prove to the world how good CC is and make us some roar aproved motors and change up the game untill everyone else catches up again.

then we wouldnt have to race with red and bash with green

The issue is the ROAR rules -- they require a three slot, two pole motor with a tiny rotor and a huge number of turns. This would make a good low RPM, low torque motor, but we use them as high RPM high torque motors. High RPM motors should have a low number of turns to minimize inductance effects, iron losses, etc.

Originally Posted by Semi Pro

quick thred jack while i am here



can the MM handle 144300rpm or are the shudders comeing from the poor motor

sadly the motor is running pretty cool for being that far over voltage

How many poles is the motor? If its a two pole motor, then yes -- that RPM is no problem. If it's four poles or higher, that's pushing the ESC a bit.

Really the only issue with high RPM is that the timing will retard slightly at high RPM because the microprocessor starts to fall behind on the rotor position estimation. Adding a bit of advance will help.

Thanx!

Patrick

[Semi Pro]

Originally Posted by Pdelcast

The issue is the ROAR rules -- they require a three slot, two pole motor with a tiny rotor and a huge number of turns. This would make a good low RPM, low torque motor, but we use them as high RPM high torque motors. High RPM motors should have a low number of turns to minimize inductance effects, iron losses, etc.



How many poles is the motor? If its a two pole motor, then yes -- that RPM is no problem. If it's four poles or higher, that's pushing the ESC a bit.

Really the only issue with high RPM is that the timing will retard slightly at high RPM because the microprocessor starts to fall behind on the rotor position estimation. Adding a bit of advance will help.

Thanx!

Patrick

thanks for the quick reply, its a 2 pole motor, just one more reason i need to buy a data logger i guess

Originally Posted by Pdelcast

LOL, what I meant to say was:

High quality motors don't need a lot of timing to perform well.

No I like it better the first way