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Old Sep 15, 2005, 08:25 PM
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Michigan
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What exactly is a "370 class" motor?

I am trying to learn more about motor types/speeds/numbers/etc. I have a stock motor from a ParkZone Super Decathlon plane and the manual states it has a "370 class" motor. What is that exactly?

I have heard people talking about a J250 (I think) and a 280 motor.. Are those lower then this one?

Any basic info on motor "numbers", etc. would be appreciated. It is hard to determine what plane I can build usign this 370 motor without knowing what to compare it to.

Thanks.
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Old Sep 15, 2005, 08:28 PM
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Melbourne , Australia
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370 class is the mabuchi (manufacturer) code. The "370" motors are more commonly known in RC as speed 300 motors. gws uses 300 and 350 designation for the motors both of which are mabuchi 370 motors in different winds.
380 class motors ore known as speed 400 motors.

hope that helps
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Old Sep 15, 2005, 08:33 PM
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Michigan
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lol.. It is almost funny..sort of like "who's on first..."

a 370 is a 300 class, but a 380 is a 400 class..

Is there any standards that are in play or is it up to the mfg. to give it any number they want?
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Old Sep 15, 2005, 08:37 PM
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Generally the length of the motor in mm . . with the exception of GWS.
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Old Sep 15, 2005, 08:42 PM
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Thanks for the link.. Great info on there.. time to do some reading!!
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Old Sep 15, 2005, 08:42 PM
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Quote:
Originally Posted by ElSeeker
lol.. It is almost funny..sort of like "who's on first..."

a 370 is a 300 class, but a 380 is a 400 class..

Is there any standards that are in play or is it up to the mfg. to give it any number they want?
There dont seem to be any standards. The manufactures must have a reason for their naming but most of the time it gets muddled in the marketing.

Most if not all the brushed motors we use come from existing sources so RC companys gave them different names , eg graupner and the speed series.
B/l motors usually have some meaning in their names its just that they all seem to do it their own way making it hard to compare like with like.
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Old Sep 15, 2005, 08:48 PM
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Quote:
Originally Posted by ElSeeker
lol.. It is almost funny..sort of like "who's on first..."

a 370 is a 300 class, but a 380 is a 400 class..

Is there any standards that are in play or is it up to the mfg. to give it any number they want?
Gruapner is the one that I understand carries the designation of SPEED 300/400's etc... I think Gruapner years ago marketed their motors calling them this and if you take a look, GWS would not and there's a marketing reason for this.
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Old Sep 15, 2005, 08:58 PM
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So how does my "370 class" motor compare to a J250 then? I have heard it mentioned quite often on some planes I am looking at building.
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Old Sep 15, 2005, 09:25 PM
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Quote:
Originally Posted by ElSeeker
So how does my "370 class" motor compare to a J250 then? I have heard it mentioned quite often on some planes I am looking at building.
Johnson Motor......the two largest makers of motors are Johnson & Mabuchi....do a search on the WEB and you will be informed.
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