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Old Dec 06, 2005, 02:28 PM
small electrics r BIG FUN
Iowa
Joined Aug 2000
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Ultrafly C-13-28 outrunner

This motor is suggested to power the Ultrafly Ultimate Bipe. The Tower catalog says it has an internal cooling fan to keep temp at 90 degrees at 180 watts. $69.99 price. Anyone using one of these ?
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Old Dec 06, 2005, 04:17 PM
Renewed interest
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Melbourne , Australia
Joined Jun 2002
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i have a few, using them in helis. They are very good performers but a little light for some of the suggested uses. These motors are high quality motors and you should be very happy. So far all of ultraflys recommendations have been spot on.
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Old Dec 06, 2005, 06:13 PM
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with the lightweight hyperion gearbox you'll have a 60g 200 watt capable combo ...nice

big bird
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Old Dec 06, 2005, 08:20 PM
Naturally altered
Joined Feb 2005
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Right unto the Ultimate box, there is no less than 4 brushless motor recommendations, the least powerful option in the lot being the C/13/28, then all the way up to the B/18 series.

A more powerful motor requires more powerfull battery too, and that also means more weight (not to mention more $$$)

The C/13/28 is a powerful yet very light motor. It will fly the Ultimate well, although with not as much power that the bigger options. It's an all around versatile motor, with a gearbox, and as such is stick mounted. That means it can be used as is in most any plane using a stick without any modifications whatsoever.

Now given a typical 10C rated (12C bursts) 3s 2100 lipo, the best option for maximum power IMO is the B/12/10. Will give you up to 240-250 watts bursts on that battery with smooth direct drive and a large prop. Motor weighs 65 grams, and of course, the Ultimate box contains everything you need to fix it right to the firewall. It is a little bit more expensive than the C/13/28, but not all that much. (Note : make sure when you order this motor that the aluminum cross mount is included with the motor... a few of them motors were shipped to LHS without it).
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Old Dec 06, 2005, 08:51 PM
small electrics r BIG FUN
Iowa
Joined Aug 2000
4,320 Posts
Thanks for all the replies.

Cubber:

My LHS did have the shiny B/12/10 outrunner. I was amazed at how small it is. I don't know if the sales person was aware of those power levels, I sure wasn't. Tower shows it for $74.99 . That might be the ticket.

Does anyone know the weight of the B/12/10 ?

Thanks !
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Old Dec 06, 2005, 09:09 PM
Naturally altered
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It`s in my previous reply : 65 grams... That`s what I have on my Utlimate.
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