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Old Jan 21, 2005, 10:29 AM
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Joined Oct 2002
35,016 Posts
Question
Power System for World Models P-51D (57 inch wing span) @ 6 lbs.

Hello,

I am trying to see if anyone else might have used two power setups such as the:

1. HIMAX 3630-1500 in the HIMAX 3.3:1 ratio gearbox?

2. CEM600-2 with the 4.5:1 ratio planetary gearbox?

This is for a World Models P-51D 57 inch wing span P-51D Mustang that is anticipated to be a total of 6 lbs. fully flight ready.

Here's the WEB SITE:
http://www.rcgroups.com/forums/showt...&page=13&pp=10
Anyone has dealt with the above power setups?

Thanks!
Carlos
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Old Jan 24, 2005, 02:26 PM
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Joined Oct 2002
35,016 Posts
Okay, I think that I have narrowed a good setup and that's the HIMAX 3630/1533 planetary gearbox (3.3:1 ratio) swinging the APC "E" 14 X 10 Prop. and using 14 -cells, GP-3300mAH, Ni-MH's

Here's the P-Calc evaluation.....

Any comments on the proposed power system?

Thanks!
Carlos
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Old Jan 24, 2005, 04:09 PM
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Hong Kong
Joined Apr 2003
1,455 Posts
Hello Carlos,

Glad to see you eventually go brushless,

You may take a look on the sticky threads in this section.
My motors are bought from a company selling ele component, and the mftr of the motor is making oem orders for usa customers in china. if interested, i can give you the details.
Quality of china motors ranges alot. I had say too much critics about them here,will not....

Model/ subject: SK-50 by Kangke
Motor: CBM-3650-9 (KV=1500)
Speed Control: Hacker Jeti-77A-O
Cell type/count: Con-ions 6s3p, 4,050mA nominal cap.
Prop/fan: 16X10 APCE
Reduction method and ratio: MEC ~3,8:1
Amps: Static max. 47,6A Watts:
RPM: 892W
Weight Ready to Fly: 7,5Lbs (120oz)
Comments :

Very sporty but no 'instant' vertical climb like my hotliner's type climb.
Excellent agility thou at super heavy weight. Roll is axial, loop can be made at 3/4 WOT, loop can be quite large at WOT.
Very good /solid control in VERY slow speed.Take off or Landing just like STOL type plane.
Overall perf can be contributed by the designs itself, I had flown ic version years ago. IC version flown fast on a .40?.45 in straight line. Take off distance is apparently MUCH SHORTER than IC.
Will try use 6s2p or 7s with a higher pitched prop to improve vert. perf...

David
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