Horhe
Member
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- Arrma RC's
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Hello everyone
As some know, I am working on some speeduning builds and in the process I realize how much I don't know.
One of the recent issues that came to my attention as I was searching for TP motors in Europe is selecting the size of the motor shaft in my case between 5mm and 8mm.
Now, so far I've ordered pre-build motors and I've accumulated these:
- TP 4040 CM 1850 kv - 5mm
- TP 4070-CM 2200kv (8S) - 5mm
- Castle 1721 2400kv - 8mm
Up to this point I've only done three speedruns, with the following results:
1. 116mph (with TP 4040)
2. 133mph (with TP 4070)
3. 140mph (with Castle 1721)
Now in each I used different gearings and setups and this was all done (besides the fun) to learn more about the differences and impacts of various parts, so I am not putting the speed increases on utilizing different motors.
But now, my questions / dilemmas are:
a. What is the impact of having a 8mm motor shaft vs a 5mm motor shaft on speed?
b. How big/relevant is this impact if any?
c. From what point (speed) does it actually begin to be relvant?
I ask because I find it more convenient to get 5mm shaft motors, also because 8mm gears are SELDOMLY available in Europe.
Please share your opinions
And thanks
As some know, I am working on some speeduning builds and in the process I realize how much I don't know.
One of the recent issues that came to my attention as I was searching for TP motors in Europe is selecting the size of the motor shaft in my case between 5mm and 8mm.
Now, so far I've ordered pre-build motors and I've accumulated these:
- TP 4040 CM 1850 kv - 5mm
- TP 4070-CM 2200kv (8S) - 5mm
- Castle 1721 2400kv - 8mm
Up to this point I've only done three speedruns, with the following results:
1. 116mph (with TP 4040)
Now in each I used different gearings and setups and this was all done (besides the fun) to learn more about the differences and impacts of various parts, so I am not putting the speed increases on utilizing different motors.
But now, my questions / dilemmas are:
a. What is the impact of having a 8mm motor shaft vs a 5mm motor shaft on speed?
b. How big/relevant is this impact if any?
c. From what point (speed) does it actually begin to be relvant?
I ask because I find it more convenient to get 5mm shaft motors, also because 8mm gears are SELDOMLY available in Europe.
Please share your opinions
And thanks