R/C Tech Forums - Brushless Dyno Plots

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Pro Master I and Pro Master II are different hardwarewise. I don´t remember exactly but I think the Pro Master I had a limit of 10 turn (brushed) and the II could go below this. I think the II had a sticker on the backplate.
My own dyno is a version I but anyway I didn´t test a motor below 11 turn.

Quote:

Originally Posted by Thugs Bunny (Post 4275084)

Jev,
Have you done any more pulls? I'm just waiting on a PS for my TD45 to start work. So far I have a GTB, GTBSS, XBR and Super Sport with Novak 4.5, 6.5, 7.5, 8.5, 10.5, 13.5 and 17.5 to work with. I've also got several different rotors and an LCR meter to work with so hopefully I can find something interesting.

Hi Frank, all is quite on the dyno front. I would really like to test other top of the line esc but have not organised the time to pull one from someones car and give any a try.

GTB vs GTBSS will be interesting. Also power/rpm vs magnetic strengh by using the gauss meter :).

On thing I will probably be is testing is 13.5 motors with sensorless esc's. There is a new stock brushless class for the bikes and a lot of racers want to run sensorless esc's.

Why can you not use a large 12v lead acid battery to run the dyno? That is what I use.

I was thinking that for the lower winds it would be best to drop down to around 4v, then would still be able to test the whole rev range without fraging the rotor.

Thanks for posting this! I was beginning to think my TD45 is a big paperweight!

Anyone have any idea about a correct inertia setting for the flywheel?

ProMaster II software is windows based. (needs to be bought)
The other version (ProMaster I if you will) is Dos based and free.

Indeed there was a hardware change for the Robi with regards to brushed mod motorlimit like stated before.

Quote:

Originally Posted by PizzaDude (Post 4291139)

Anybody, anybody...?

Quote:

Originally Posted by PizzaDude (Post 7418039)

Anybody, anybody...?

Bueller....

Quote:

Originally Posted by Thugs Bunny (Post 4195396)

Hey JevUK,
I just bought a Robi as well as a TurboDyno 45 just for testing Brushless stuff so once I get setup I can start posting stuff. I have a couple questions for you on the Robi. First, were there two versions the Pro-Master and Pro-Master II? And if so do you know if I can still get recalibrations or upgrades for them?

Thanks,
Frank

promaster 1 is dos software promaster 2 is windows software.

Quote:

Originally Posted by sprint5h (Post 4174969)

Do they still sell these dynos?

I would like to investigate and test Novak vs Speedpassion vs LRP speedos, and the different motors.

well if you are willing to give me enough money i would sell mine :D unfortunately my pc cable fried and no one has one cheap enough or is willing to donate to me LOL

Quote:

Originally Posted by JevUK (Post 4102350)

Hi Folks,

After success with a Robitronic pro master dyno to analyze brushless systems, I thought it would be good idea to pool our information.

Here is a brief explanation how I operate my dyno with a brushless setup.

1. Install brushless motor into dyno as you would a brushed one.
2. Connect a brushless ESC to the motor.
3. Connect ESC to Receiver as you would if it were in a car.
4. Connect 4.8-6v supply to one port of receiver(I use 4 cell 150mah battery pack)
5. Connect Power Output from dyno to main battery input of the ESC
6. Turn on transmitter.
7. Apply full throttle on transmitter at the same time as starting dyno test routine.
8. Upload plot to the Internet and post results here :).

This method tests ESC as well as the motor. By using the same motor different ESC can be compared.

Here as some comparison that I think many racers would love to see:

Various ROAR spec motors

eg, 10.5, 13.5 & 17.5

Brushless - Brushed

10.5 - 19t
13.5 - 19t & 27t
17.5 - 27t
21.5 - Silvercan

Various ESC.

Novak GTB/XBR, Speedpassion, GM, Tekin etc

Efficiency of low wind motors for use in 5 cell modified racing

eg. 2.5 - 4.5 turns.

If anyone is generous enough to post dyno plots could they please add text of various data incase we lose the picture.

Regards,

Jevon

so do you connect teh dynos main power wires to a 12v battery still i assume you do (you did not mention whether you connected them or not)