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View Full Version : modified watt-age crazy max

geo8498@mac.com
08-02-2005, 05:15 AM
my crazy max with balsa fuselage, balsa wing saddle, and eflite 370 outrunner. flies with an jeti 18esc, APC 8x6 prop, 2 cell 1320 lipos
note the weights in front and the battery tray cut into the fuse.
geo8498@mac.com
08-03-2005, 12:24 AM
some more detailed shots of my project
geo8498@mac.com
08-03-2005, 12:28 AM
more details
geo8498@mac.com
08-10-2005, 04:35 AM
painted
waynezz
05-15-2006, 05:17 AM
Hi, I have just about completed a Mad Max (my second one) and have fitted one of the cheap "bell" Tower Pro brushless motors. I am just waiting for the ESC to arrive. Thought I would try it on a 2 cell Lipo, but am unsure of prop size to use. Any idea? I see you use an 8x6 which I had thought was too small. How many amps is it pulling? I was going to try a 10x4.7, but may be over proping the motor.
cheers
Wayne
qban_flyer
05-15-2006, 06:20 AM
Love those E-Flite's Park motors. Have a Park 300 (7X5E APC) flying my Lil' Rascal and a Park 370 (10X4.7SF APC) flying my G/P Micro Whizz! :D

Great powerful and very quiet little motors. :)
geo8498@mac.com
05-16-2006, 12:48 AM
I just put a cheap $29 KMS outrunner in my Alfa P47. Tested today and seems pretty good.

I don't know how many amps I'm pulling on my crazy max. The 8x6 does great though with 3 cells. 1320 Thunderpower and 910 Kokam.

I think a 10 inch prop would be too much. In fact, I think at one time I even had a 7" on mine. Furthermore, I don't think the landing gear would allow enough clearance for that.
waynezz
05-16-2006, 01:51 AM
I'm new to this brushless carry on, but was told if going down in cells (two cells) that I would need to go up in size, is that correct? What about 2 cells and a 9x4? Its all academic at the present as I'm still waiting for my ESC to arrive.
When it does I'll try the different sizes as I have a range from 7" to 11"

cheers
qban_flyer
05-16-2006, 03:53 AM
I'm new to this brushless carry on, but was told if going down in cells (two cells) that I would need to go up in size, is that correct? What about 2 cells and a 9x4? Its all academic at the present as I'm still waiting for my ESC to arrive.
When it does I'll try the different sizes as I have a range from 7" to 11"

cheersI would begin with what the motor manufacturer recommends in the way of prop diameter and pitch for both two and three cell Li-Po usage respectively. :)