2LikesGM Brushless
09-06-2010, 04:40 AM
#1831
as it has been written before it's not the gearing that make the motor hot but the revs, so going down to 5,8 instead of 8,2 will most likely make your motor run cooler!
for the gm motor change the motor cut-off temperature from 100 to 115°C. Then you should be fine
If you are running that motor with standard mode 9 I think it should be alright apart from the cutoff temperature
for the gm motor change the motor cut-off temperature from 100 to 115°C. Then you should be fine
If you are running that motor with standard mode 9 I think it should be alright apart from the cutoff temperature
09-06-2010, 04:49 AM
#1832
Many thanks Martin, I'll be there again this weekend so I'll get that gearing and cut-off changed, hopefully will be going faster and staying cooler. 
09-06-2010, 04:51 AM
#1833
it will
you got a fan in your car that cools the motor?
you got a fan in your car that cools the motor?
09-06-2010, 05:00 AM
#1834
Now I'm just after one more thing, a starting FDR.
I'll be at this track,
http://www.ardentracing.com/raceway/
running a 13.5 and to start with will just be using the standard mode 9 setting to get me going.
Any ideas where to start? need any more info? Cheers guys.
I'll be at this track,
http://www.ardentracing.com/raceway/
running a 13.5 and to start with will just be using the standard mode 9 setting to get me going.
Any ideas where to start? need any more info? Cheers guys.
Well I got the genius 90 and 13.5 motor and ran it on sunday, wow!
It was geared at 8.2 with standard mode 9 after some advice from a guy who has been running gm a while there and it was super fast!
One little thing though, does the speedo turn down the timing if it sees the moor is getting too hot? I ask because I did lose some punch towards the end of each race, but it was still very fast, so only a slight loss of performance.
I guess once I get the usb link I can set it all up properly, perhaps a slight decrease in timing would mean more consistent power throughout the run?
It was geared at 8.2 with standard mode 9 after some advice from a guy who has been running gm a while there and it was super fast!
One little thing though, does the speedo turn down the timing if it sees the moor is getting too hot? I ask because I did lose some punch towards the end of each race, but it was still very fast, so only a slight loss of performance.
I guess once I get the usb link I can set it all up properly, perhaps a slight decrease in timing would mean more consistent power throughout the run?
theres no point asking for advice and not follow it. All here to help
09-06-2010, 05:00 AM
#1835
I do have a fan but don't have it installed at the moment. I need a Y lead because my last power slot on the rx is taken up by the fan for the speedo, I will get a Y lead though so I can also run the fan on the motor.
09-06-2010, 05:02 AM
#1836
Tech Rookie
By reading your posts i learned that it is possible to copy one mode to another and modifies some values for this mode ... in other word have several setups prepared that can be changed just with the transmitter ! Is it right ?
Thanks for your help i learn a lot of things today !
09-06-2010, 05:03 AM
#1837
I'm sorry hacker but at the time when I turned up at the meeting this is what I was advised from a guy that has been running GM at this track for a while. Obviously I now know this guy is wrong but I'm sure you can see why I might have followed what he said. I do appreciate everyone's help, and I am really new to this brushless game.
09-06-2010, 05:05 AM
#1838
Add a 40mm fan that blows onto the motor, that will enable you to run a lot more power and more consistancy throughout the run
I haven't installed the new release yet, so i didn't know about that !!
By reading your posts i learned that it is possible to copy one mode to another and modifies some values for this mode ... in other word have several setups prepared that can be changed just with the transmitter ! Is it right ?
Thanks for your help i learn a lot of things today !
By reading your posts i learned that it is possible to copy one mode to another and modifies some values for this mode ... in other word have several setups prepared that can be changed just with the transmitter ! Is it right ?
Thanks for your help i learn a lot of things today !
yes it is possible to have 9 identical modes with just minor changes and then switch with the transmitter
09-06-2010, 05:09 AM
#1839
Sure thing Martin. Looking forward to this, EVEN MORE POWER! 
09-06-2010, 05:21 AM
#1840
I'm sorry hacker but at the time when I turned up at the meeting this is what I was advised from a guy that has been running GM at this track for a while. Obviously I now know this guy is wrong but I'm sure you can see why I might have followed what he said. I do appreciate everyone's help, and I am really new to this brushless game.
09-06-2010, 05:51 AM
#1841
no worries, what some people dont realize is undergearing can also contribute to overheating, which is what you may have been experiencing from the sound of it. 8.2fdr may be great for a 10.5, but as martin said gear your 13.5 around 5-high 5's and you will experience even more bottom and top end and lower heats.
09-06-2010, 10:50 AM
#1842
hopefully it will be out soon.
the graupner website now says mid-october.
09-06-2010, 10:53 AM
#1843
Indeed it does...
I ordered one for my 12th scale. Just waiting till mid-october like the site says...
I ordered one for my 12th scale. Just waiting till mid-october like the site says...
09-06-2010, 11:33 AM
#1844
Tech Adept
I was running at 7.5 and Martin gave me this advice. It seemed a bit too much of a step at first to jump from one ratio to another so i just kept doing five minute sessions and adding one tooth at a time. The result at first wasn't anything but then the motor started getting more punch, faster and cooler. The other thing i notice was my batteries were needing 2500mha to charge them rather than before only needing 1800mha, so energy is going somewhere.
I'm now running at 5.8 but i'm still messing with the timing and higher gearing because its only just starting to get warmer now at 60degress c and still seems to be gaining top end punch. I guess the only thing that will limit performance or what i'm looking for is for the motor to just be off heat fade at the end of a race! Would that be right?
At Martin:
Would you always say that the need for a fan indoor carpet is not necessary? I think its reading about 60C in the telemetry function after a race with fan.
09-06-2010, 11:37 AM
#1845
Tech Adept
as or speedo timing:
the gm speedo does not only do one timing. It can actually do any timing you would ever want it to do
- it can start with full timing right from the start
- it can start with no timing and add extra timing at some rpm
- it can start with 1 timing, then ramp until a second timing
- it can start with no timing and then do 1 timing and then ramp until 2 timing
- it can add timing at full throttle only
- it can add timing according to your throttle stick position, with and without a switch-rpm
- it can do a zero timing mode so it meets all stock class rules if necessary