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Old 10-20-2010, 06:10 AM   #2071
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Thanks Martin
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Old 10-20-2010, 09:51 AM   #2072
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Has anyone tried playing about with the turbo function?

Last meeting i kept dropping my current limit down until it was right for the in field but did find i was losing some punch for getting down the straight. Would this be a good case for increasing the turbo function?
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Old 10-20-2010, 06:46 PM   #2073
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what 'turbo' function are you talking about? be specific
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Old 10-21-2010, 01:31 AM   #2074
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what 'turbo' function are you talking about? be specific
there is only one turbo function. it has been introduced to this hobby by ralf years and years ago and its name remained unchanged ever since.
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Old 10-21-2010, 01:40 AM   #2075
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timing function yes,

turbo function no,

but its all relative anyway, no brushless speed control really has turbo, its just timing thrown at it.
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Old 10-21-2010, 02:18 AM   #2076
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wrong, the real turbo function existed back in brushed days with 2000mah nicd batteries already!
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Old 10-21-2010, 03:09 AM   #2077
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what is your definition of 'turbo'?
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Old 10-21-2010, 03:35 AM   #2078
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The real turbo function as it has always been ever since is basically a variable current limitation.

You can set the current limit to whatever you like which results in a very smooth ride through the infield, going down the straightaway however requires quite a lot more current than any part of the infield ever would.
This is when the turbo function comes in.
The moment you reach full throttle (down the straight you do ofcourse) the currentlimitation gets upped by 1A every 4 milliseconds (by default) and therefore even if you only run 80A of current limitation, you can have 200A+ at the end of the straightaway, resulting in unlimited topend.

This is the turbo function. It was the first one, it is the real one.
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Old 10-21-2010, 03:51 AM   #2079
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I understand how turbo works in a internal combustion engine.

As I understand it, tekin were the first ones to use the term 'turbo'. Even though GM were the pioneers, I still cringe everytime someone uses the term 'turbo' in an electrical power.

anyway, now I know what Andy was refering to....(frequency), as there is no turbo selection in the GM AS genius tool.
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Old 10-21-2010, 03:52 AM   #2080
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I understand how turbo works in a internal combustion engine.

As I understand it, tekin were the first ones to use the term 'turbo'. Even though GM were the pioneers, I still cringe everytime someone uses the term 'turbo' in an electrical power.

anyway, now I know what Andy was refering to....(frequency), as there is no turbo selection in the GM AS genius tool.
check again, there is a turbo 'selection' in the tool
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Old 10-21-2010, 04:06 AM   #2081
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we are talking electronic speed controls ... therefore we have to look for th turbo function in this field. and in there, gm was first way ahead of time to have this.

there is a turbo function still (see pic attached)
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GM Brushless-unbenannt.png  
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Old 10-21-2010, 04:29 AM   #2082
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oh yes, my apologies, I didnt see it.

funny though, as I have never ever adjusted that before. I just use fix timing and adjust that to suit conditions/temperature.

will play with 'turbo' next time
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Old 10-21-2010, 04:34 AM   #2083
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to be honest the turbo function is not meant to be played with really.

We found 1A/4ms is the best value. anything more messes up the throttle response resulting in unconsistant laptimes
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Old 10-21-2010, 09:52 AM   #2084
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to be honest the turbo function is not meant to be played with really.

We found 1A/4ms is the best value. anything more messes up the throttle response resulting in unconsistant laptimes
So really i need to be upping the current limit a little and be a little more careful on the throttle rather than give it a bit more "turbo function"?
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Old 10-22-2010, 08:52 AM   #2085
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Martin,
can you post your setup file for V13 for Graupner engine (this black/silver one). 9.5/13.5 or 17.5T ;-)

Thanks!
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