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Old 05-01-2014, 09:37 AM   #1
jpx
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Default ORCA TX 13.5T motor timing for blinky

I bought a ORCA TX 13.5T to race in 13.5T blinky TC.
As I'm new to this class and I don't have any experience with this motor and there is the possibility of changing the motor timing, I wonder what is the best to start.
The motor is marked with 5 lines, at the line in the middle 10 deg are written second line to the left has a + and second line to the right has a -. (looking at the back of the motor; left side of the car)
Currently the motor is set to the line between 10 deg and -.
Gearing is 4.91
The racetrack I'm racing has one straight where I reach the topspeed, and it has several tight corners.
After 7 min runing the motor has less than 70 deg celsius at 20 deg celsius air temp.

Here are my questions:
- which direction of changing the timimg will give more topspeed?
- which direction of changing the timimg will give more torque?
- should I change the timing for 13.5T blinky? in which direction?

Appreciate your help!
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Last edited by jpx; 05-01-2014 at 12:16 PM.
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Old 05-01-2014, 10:13 AM   #2
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Most guys are running 1.5 to 2mm past the last timing mark in the + direction. I ran 2mm past the timing mark. More + timing for more top end. Less + timing for more low end.
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Old 05-01-2014, 10:20 AM   #3
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understand.
This means you are running 5 mm more than me in the + direction.

What about the temperature of your motor when running 2mm past the + timing mark?
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Old 05-01-2014, 11:46 AM   #4
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That will also be dependent on gearing, but I keep mine about 165 F after 6 minutes.

I've been told going over 2mm past the last mark just adds additional heat without any performance benefit. But I've never played with it past that point so I can't confirm.
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Old 05-01-2014, 11:55 AM   #5
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Yes 2mm past the last timing mark Is the sweet spot. gearing does not change for me. Keep the FDR at 4.1 and adjust timing to stay under 170F.
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Old 05-01-2014, 12:22 PM   #6
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wow, 4.1 with the 13.5?
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Old 05-01-2014, 01:47 PM   #7
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165-170 F (approx. 75C) sounds perfect.
So I might even try to gear longer than 4.9 and go up to 2mm over the + mark and I'll just keep an eye on the temperatur - especially when it is warmer outside.

Thanks for your replies!
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Old 05-01-2014, 07:24 PM   #8
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Sorry, how long is this straight? My suggestion for gearing is based on a 20m straight.
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Old 05-03-2014, 08:58 AM   #9
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the whole track has about 50x30 m - so I expect the strait to be at least 25m. btw: beautiful asphalt track!
I don't think, I will go as long as 4.1 as FDR.
But now I know, how I can play with motor timing and FDR.
Currently using FDR 4.9 and timing 1 mm between 10deg and minus mark I guess I still have some potential without having to worry about to long gearing or to much + timing.
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ORCA TX 13.5T motor timing for blinky-mcss_v1_1.png  
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Old 05-05-2014, 12:13 PM   #10
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just to give you some feedback:

two guys yesterday at the race had the same motor. They allways use motor timing 2mm past the + timing mark and had FDR of about 4.5 and said 4.3 should be no problem.

I set the same timing and went with FDR 4.7 and was happy about the speed. Temperatur was below 165F (75C) after 6 min at about 60F (15C) air; asphalt was warmer due to a wonderful sunny day.
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Old 07-22-2014, 10:25 AM   #11
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Default 13.5T full motor timing and 4.02FDR

I'm running with my TeamMagic E4rs II EVO a 72/34 4.02 FDR, my motor SkyRC Ares Pro working good 55degrees, but I need a little top speed, I have to look for the equilibrium for don't loose the torque.
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Old 07-22-2014, 01:29 PM   #12
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I find it hard to go past 4.00 fdr gearing with my Novak Ballistic 13.5t(12.5mm rotor)... I run 3.94 fdr, and think I might try 3.75 fdr in the future... I run 30 degree timing though, never higher or lower...
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Old 07-22-2014, 05:40 PM   #13
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Quote:
Originally Posted by bertrandsv87 View Post
I find it hard to go past 4.00 fdr gearing with my Novak Ballistic 13.5t(12.5mm rotor)... I run 3.94 fdr, and think I might try 3.75 fdr in the future... I run 30 degree timing though, never higher or lower...
Great, I have a 12.5mm rotor too, then I think I can come to 3.9 with Ares Pro, but with my last SpeedPassion not because it very hotter with 4.02 was 75degrees with fan on sunny days.
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