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Old 05-24-2006, 11:44 AM   #1
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Default Brushless Motor Temp

Im trying to gear my RDX for use with Novak 4300 brushless motor and a Sphere competition ESC. I was told by the local fast guy they run at a 1.2 rollout so I did that. Ran my car for about 3 min to check the temp of everything to make sure I wasnt over gearing it. The motor was around 120-130 and the ESC was about 95. Is that too high? I thought it was the ESCs that ran hot with brushless?

Thanks in advance.
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Old 05-24-2006, 11:52 AM   #2
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Quote:
Originally Posted by or8ital
Im trying to gear my RDX for use with Novak 4300 brushless motor and a Sphere competition ESC. I was told by the local fast guy they run at a 1.2 rollout so I did that. Ran my car for about 3 min to check the temp of everything to make sure I wasnt over gearing it. The motor was around 120-130 and the ESC was about 95. Is that too high? I thought it was the ESCs that ran hot with brushless?

Thanks in advance.
I ran the Nosram Matrix (when you get this esc good he's better then the evo or competition version!) and he never comes hot! The 4Star Brushless motor of Nosram has somethin about 20-30C here! The 5 Star has the same temperature! But the novak brushless systems and motors are not good! They break allot!
Greetings Ollie
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Old 05-24-2006, 12:07 PM   #3
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Quote:
Originally Posted by or8ital
Im trying to gear my RDX for use with Novak 4300 brushless motor and a Sphere competition ESC. I was told by the local fast guy they run at a 1.2 rollout so I did that. Ran my car for about 3 min to check the temp of everything to make sure I wasnt over gearing it. The motor was around 120-130 and the ESC was about 95. Is that too high? I thought it was the ESCs that ran hot with brushless?

Thanks in advance.
I roll mine out around 28.5-29MM in my RDX. We run on a small, tight carpet track. It comes off the track hot as hell, but it doesn't thermal. I'm not even running the fan on the ESC, it just doesn't get very hot with the 4300. I don't know exact temps though, sorry. :-(
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Old 05-24-2006, 12:21 PM   #4
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Originally Posted by syndr0me
I roll mine out around 28.5-29MM in my RDX. We run on a small, tight carpet track. It comes off the track hot as hell, but it doesn't thermal. I'm not even running the fan on the ESC, it just doesn't get very hot with the 4300. I don't know exact temps though, sorry. :-(
Well thats a 1.15 rollout in inches so maybe I will back it off a tooth or two.

Would a thermal shutdown cause any lasting damage? I guess I could keep changing gears until it happens and then back off one tooth. I assume the Sphere Competition has thermal protection.
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Old 05-24-2006, 12:36 PM   #5
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Quote:
Originally Posted by or8ital
Well thats a 1.15 rollout in inches so maybe I will back it off a tooth or two.

Would a thermal shutdown cause any lasting damage? I guess I could keep changing gears until it happens and then back off one tooth. I assume the Sphere Competition has thermal protection.
The end ratio of my brushless on a large track 6.0 to 6.5 and on a short and fast track something about 7.5 to 8.5
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Old 05-24-2006, 11:25 PM   #6
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With the 5.5 or 4.5 were shoot for motor temp of 140-160 degrees.
No, the thermo shutdown wont hurt the motor or speedo... thats what its for.. to protect you from overheating the unit.
When we ran the 5800 outdoors we put on a big fan on the ESC and geared it until it thermo'd and backed it off a tooth. They seem to run faster the more gear you throw at them.
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Old 05-25-2006, 04:59 AM   #7
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If it's coming off the track at 120 to 130F, then go up a tooth. You've got another 50 degrees to play with before it thermals.

Ollie, I don't know how you can say that the Nosram/LRP stuff is BETTER than the Novaks. EVERY Reedy Star motor I've seen has blown the rotor apart inside the can. But on the Novak, I don't know anyone personally that has had any problem with them.
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Old 05-25-2006, 09:37 AM   #8
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Originally Posted by ottoman
With the 5.5 or 4.5 were shoot for motor temp of 140-160 degrees.
No, the thermo shutdown wont hurt the motor or speedo... thats what its for.. to protect you from overheating the unit.
When we ran the 5800 outdoors we put on a big fan on the ESC and geared it until it thermo'd and backed it off a tooth. They seem to run faster the more gear you throw at them.

That does seem to be the ticket. Gear it until the motor thermals and then back it off a tooth. We did this with the 4300 motor for carpet.

I ran my 5800 in the Pro4 on the track and it was a blast and had great speed and rip. I am really starting to like the BL on a big outdoor track
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Old 05-25-2006, 09:43 AM   #9
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Originally Posted by RcCzarOfOld
If it's coming off the track at 120 to 130F, then go up a tooth. You've got another 50 degrees to play with before it thermals.

Ollie, I don't know how you can say that the Nosram/LRP stuff is BETTER than the Novaks. EVERY Reedy Star motor I've seen has blown the rotor apart inside the can. But on the Novak, I don't know anyone personally that has had any problem with them.
in Belgium the Novak motors and ECS burns like gasoline! Its not normal man its really crazy al the novak brushless systems i saw in Belgium started to get fire on the track really crazy shit!
Greetings Ollie
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