RCCrawler Forums

SVEN · 11-21-2005, 01:01 AM

Quote:

Originally Posted by RC JEDI

Heres what I got. http://cgi.ebay.com/ws/eBayISAPI.dll...MEWA%3AIT&rd=1

It looks kinda funny with those caps going all different directions. What size is the motor (larger or smaller than a 540)?

RC JEDI · 11-21-2005, 01:35 AM

Its 540 size and those caps house the big brushes.

RC JEDI · 11-21-2005, 01:39 AM

Oh you mean the capacitors lol. well I gues the previous owner didnt do a good job.

chafey · 11-22-2005, 11:43 AM

for crawling in my clod with 9 tooth pinions and 6 cells 55 turns is faster than i like. i think 60 would be perfect, or i would like to try 5 pole motors.

Fishmaxx · 11-22-2005, 12:31 PM

Quote:

Originally Posted by jason

.......... if we had a 45 turn motor and lost a little of the torque we could gain wheelspeed and loose the 8th cell for more weight savings. I am not sure because our current motor selection pretty much consists of 27turns, then 55 turns. That is a huge gap I really think we could benefit with something in the middle of those.

I agree, cobalt magnets would also help!

Mnster · 11-22-2005, 12:39 PM

I'd say integy lathe motors with a smoother water tight endbell. So the motors can be run in mud without fouling up. The case wouldn't get caught up on rocks.

Reflection · 11-23-2005, 05:42 PM

Quote:

Originally Posted by RC JEDI

Id say the astroflight cobalt is the turbo diesel of electric motors lol.

Well then,that answers that. We NEED that motor with a better price tag

JohnRobHolmes · 11-23-2005, 07:55 PM

It is cheaper to produce motors without brushes.

ILoveRCRockCrawlin · 11-23-2005, 09:12 PM

Quote:

Originally Posted by johnrobholmes

It is cheaper to produce motors without brushes.

but costs more for the consumer.

id say 30-40 turn motor would be nice. or something like the cobalts.

TerribleOne · 11-23-2005, 09:20 PM

I think for a shafty, the mag mayhem is my fav.

And integy makes 35t, 45t, 55t, 65t, lathe motors now.
http://integy.automated-shops.com/cg...41105499951.31

EeePee · 11-23-2005, 09:43 PM

Ha ha! I got 2 of each: 35t, 45t, and 65t. And I already have the usual 55t.

I get to try em all!

JohnRobHolmes · 11-23-2005, 09:58 PM

Quote:

Originally Posted by ILoveRCRockCrawlin

but costs more for the consumer.

wait until more competition enters the market. A top of the line brushless motor is still expensive just like a nice brushed motor, but there hasnt been enough U.S. market exposure to drive down feigao type motor prices. They will never be quite as cheap as ceramic magnet motors, but they wont be as weak and ineffiecient either.

RC JEDI · 11-23-2005, 10:17 PM

Well here they are. Astroflight cobalt torque monsters! Notice The hand wound and balenced 7 pole armatuer, big brushes, Sealed type construction, ten colbalt type earth magnets, machined aluminum case, and brass hardware. Any more questions why they cost that much?

JohnRobHolmes · 11-23-2005, 10:30 PM

OHHHH look at that thin gap between the ohh so thin magnets. Heat dissipates quicker from the arm since it has less distance to travel.

I love the work that goes into Quality Motors.

Good buy. Those look like they are in great condition.

RC JEDI · 11-23-2005, 10:41 PM

Yeah they are is great shape

. They were only run enough to break them in from what I can see. Those magnets are very strong just like they should be. I was very happy to find them and cant wait to run them. Ill let ya know how it goes. But for crawling they may need a gear reduction but will probably have the torque to pull it through anything at very low throttle due to the desighn. Its called efficiency. The best part is that these motors will go like a bat out of hell when asked.

JohnRobHolmes · 11-23-2005, 10:48 PM

can you measure the rpm per volt of them? Im guessing 2500, but its just a guess.

RC JEDI · 11-23-2005, 11:17 PM

Actually I just looked at an astroflight motor chart and the 7 turn is 2100 rpm per volt so these should be around 1800? These are no longer made so its hard to find any info on them.

RC JEDI · 11-23-2005, 11:26 PM

I dont have a tach. How do you measure yours?

JohnRobHolmes · 11-23-2005, 11:27 PM

yeah, if not lower. If one were to want comperable performance in brushed, they could get the 7 turn cobalt and gear it back down to suit.

JohnRobHolmes · 11-23-2005, 11:36 PM

I have an optical tach to measure rpm.

The Cobalt 05 motors would be a pretty good replacement if you geared back down for slow speed. the cobalt 15's would work too, but they would want more voltage to get snappy.

11-23-2005, 09:20 PM	#30
TerribleOne Rock Crawler Join Date: Jul 2004 Location: OC, Oregon Posts: 803	I think for a shafty, the mag mayhem is my fav. And integy makes 35t, 45t, 55t, 65t, lathe motors now. http://integy.automated-shops.com/cg...41105499951.31 Last edited by TerribleOne; 11-23-2005 at 09:39 PM.

11-23-2005, 10:17 PM	#33
RC JEDI Newbie Join Date: Nov 2005 Location: toledo Posts: 36	Well here they are. Astroflight cobalt torque monsters! Notice The hand wound and balenced 7 pole armatuer, big brushes, Sealed type construction, ten colbalt type earth magnets, machined aluminum case, and brass hardware. Any more questions why they cost that much? Attached Images

11-21-2005, 01:35 AM	#22
RC JEDI Newbie Join Date: Nov 2005 Location: toledo Posts: 36	Its 540 size and those caps house the big brushes.

11-21-2005, 01:39 AM	#23
RC JEDI Newbie Join Date: Nov 2005 Location: toledo Posts: 36	Oh you mean the capacitors lol. well I gues the previous owner didnt do a good job.

11-22-2005, 11:43 AM	#24
chafey Rock Crawler Join Date: Aug 2004 Location: woods cross utah Posts: 523	for crawling in my clod with 9 tooth pinions and 6 cells 55 turns is faster than i like. i think 60 would be perfect, or i would like to try 5 pole motors.

11-22-2005, 12:39 PM	#26
Mnster MWRCA'er Join Date: Apr 2004 Location: Machesney Park IL Posts: 3,995	I'd say integy lathe motors with a smoother water tight endbell. So the motors can be run in mud without fouling up. The case wouldn't get caught up on rocks.

11-23-2005, 07:55 PM	#28
JohnRobHolmes owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down! Posts: 20,290	It is cheaper to produce motors without brushes.

11-23-2005, 09:43 PM	#31
EeePee MODERATOR™ Join Date: Jul 2004 Location: Ohio Posts: 18,928	Ha ha! I got 2 of each: 35t, 45t, and 65t. And I already have the usual 55t. I get to try em all!

11-23-2005, 10:30 PM	#34
JohnRobHolmes owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down! Posts: 20,290	OHHHH look at that thin gap between the ohh so thin magnets. Heat dissipates quicker from the arm since it has less distance to travel. I love the work that goes into Quality Motors. Good buy. Those look like they are in great condition.

11-23-2005, 10:41 PM	#35
RC JEDI Newbie Join Date: Nov 2005 Location: toledo Posts: 36	Yeah they are is great shape . They were only run enough to break them in from what I can see. Those magnets are very strong just like they should be. I was very happy to find them and cant wait to run them. Ill let ya know how it goes. But for crawling they may need a gear reduction but will probably have the torque to pull it through anything at very low throttle due to the desighn. Its called efficiency. The best part is that these motors will go like a bat out of hell when asked.

11-23-2005, 10:48 PM	#36
JohnRobHolmes owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down! Posts: 20,290	can you measure the rpm per volt of them? Im guessing 2500, but its just a guess.

11-23-2005, 11:17 PM	#37
RC JEDI Newbie Join Date: Nov 2005 Location: toledo Posts: 36	Actually I just looked at an astroflight motor chart and the 7 turn is 2100 rpm per volt so these should be around 1800? These are no longer made so its hard to find any info on them.

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11-23-2005, 11:26 PM	#38
RC JEDI Newbie Join Date: Nov 2005 Location: toledo Posts: 36	I dont have a tach. How do you measure yours?

11-23-2005, 11:27 PM	#39
JohnRobHolmes owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down! Posts: 20,290	yeah, if not lower. If one were to want comperable performance in brushed, they could get the 7 turn cobalt and gear it back down to suit.

11-23-2005, 11:36 PM	#40
JohnRobHolmes owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down! Posts: 20,290	I have an optical tach to measure rpm. The Cobalt 05 motors would be a pretty good replacement if you geared back down for slow speed. the cobalt 15's would work too, but they would want more voltage to get snappy.

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