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Brushless Choices And Comparisons

Old 07-05-2003, 03:46 PM
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locoworks
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Default Brushless Choices And Comparisons

i am looking at fitting a brushless motor in a pusher configuration in place of the speed 400 currently employed. i'm looking at Kontronic, Hacker, Astro , Aveox etc. what i want to know is what motors ( direct drive ) and props give the best thrust per amp on 8 cells. i would like to know any proven combinations. i'm not looking for the MAXIMUM thrust, but somerthing that gives reasonable consideration to the cells. i dont want a fan motor with a 2 x 2 prop, looking for a 4 - 5 inch diameter camprop type.
Old 07-05-2003, 04:40 PM
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e-bird
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Default Brushless Choices And Comparisons

Get a trial copy of www.motocalc.com and look it will help
a lot. CU
Old 07-05-2003, 09:20 PM
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sniper887
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Default razor

Hey has anyone heard of razor brushless motors? I just saw them on hobbypeople.net and was wondering if they're any good.
Old 07-09-2003, 08:29 PM
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Jason Beach
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Default Brushless Choices And Comparisons

I've heard of loots of happy people with razor motors, though they were all 280 to 300 size replacements. I don't know if they make a 400 sized motor.
There are a lot of people who have used the Astro 020 as a 400 replacement with good success.

Jason
Old 07-09-2003, 09:10 PM
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e-bird
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Default Brushless Choices And Comparisons

All except 1 or 2 brushed motors the brushless have only bearings
to go bad they loose a magnet once in a while. But I have a couple of reworked and rewound car motor that eff is up at the 80% mark at one rpm . I do prefer the outrunner brushless
the asain market have being building these for more than 20 yrs
for computer harddrives. Some of Euro are good. I rewind and
work on the outrunners i have rebuilt maybe more than 40 of
them but it is rough and i have a fullblown machine shop. But the
outrunners need no gearboxes so that is not loss I got 2 Nippy
made in the CZ and they are very good But one needs larger prop
at less amperage for one plane so going to rewind a new motor. CU
Old 07-09-2003, 09:54 PM
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Steve Neu
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Default Brushless Choices And Comparisons

There are lots of options---I have used the Aveox 2713/4 which is a nice step up in torque and power from a S400 or S480. The Razor motors are a better match for the power of the s400 but at a lower weight.

Steve

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