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SBR_RV
08-10-2005, 01:19 AM
hi all, im new to brushless power and have got my firts brushless motor, its a HIMAX 2025/4200, it will be running in my GWS mustang. can you please let me know what not to do so i dont blow the speed controller or ruin the battery. eg. what prop and gearing when using 9.6v-11.1v
BTW im running a 30 amp SC.

also does a NIMAH battery pack at 9.6v put out more power than a LIPO 7.4v? im guessing it does, and does the HIMAX motor consume more power than the GWS 370c motor?
thanks.

Spaceclam
08-10-2005, 02:00 AM
ok, it seems you are new to electric to begin with,
first of all, just solder the wires. if it runs backwards, switch any two wires GOING TO THE MOTOR and it will run the other direction.
what prop you want to use will dictate what gear ratio to use.

http://www.maxxprod.com/pdf/HGdata.pdf

EpoweredRc
08-10-2005, 02:09 AM
hi all, im new to brushless power and have got my firts brushless motor, its a HIMAX 2025/4200, it will be running in my GWS mustang. can you please let me know what not to do so i dont blow the speed controller or ruin the battery. eg. what prop and gearing when using 9.6v-11.1v
BTW im running a 30 amp SC.

also does a NIMAH battery pack at 9.6v put out more power than a LIPO 7.4v? im guessing it does, and does the HIMAX motor consume more power than the GWS 370c motor?
thanks.

I have that same motor on a 4.4:1 gear ratio pulling a 9X6 apc slow flyer prop and runing a Lipo 1320 TP Pro lite pack on a 14 ounce plane.how much does your plane weigh and what gear ratio are you going to use?
I have a 25 amp Speed controller and Im pulling 19 amps out of it.

SBR_RV
08-10-2005, 08:37 AM
spaceclam, thanks for the advise, but im not new to electric, and do realise that the connections will need soldering.
iv never bothered weighing it, and im asking what prop and gear ratios are best

EpoweredRc
08-10-2005, 03:08 PM
spaceclam, thanks for the advise, but im not new to electric, and do realise that the connections will need soldering.
iv never bothered weighing it, and im asking what prop and gear ratios are best
Again,what size plane,how much does it weigh?
is it going to be a slow flying plane?
or a fast sport type plane?

Answer these and we can help.

Spaceclam
08-10-2005, 06:25 PM
did you read the link i posted? there is no best gear ratio and prop until some specifications are set. how much thrust do you need? what battery will you be using etc? the link i posted is a thrust data chart and may help you.

Reformed Nitroaddict
08-10-2005, 06:32 PM
It seems that unless you did something out of the norm - the GWS P-51 will weigh in at between 16-18oz.

That particular plane really needs alot of speed or it has a tendency to tip stall. That being said, the motor and ESC can handle 20amps easily, just make sure the lipo can too. Running either a 9x6 on 4:1 gearing or a 10x7 on 5:1 will provide all the power and speed you will ever need. Keep in mind that you will need at least a 10-12C 3S lipo pack of between 1900mah and 2200mah.

In regards to your question about a 9.6V nimh pack being more powerful than a 2S 7.2 Lipo pack - yes, it will produce more power, however, it cannot supply the proper amps for the motor you are using if it is a AAA pack. If a larger KAN pack, then it can, but the weight will take away any performance benifit. That motor really requires at least 11V to run properly.

nova801428
10-15-2005, 07:42 AM
don't crash

watt_the?!
10-15-2005, 11:07 AM
the ''BEST'' setup for the 2025-4200 with gearbox is the 5.5:1 and 12 x 6 prop drawing around 19A static for oodles of thrust and speed.

enough to hover the jumping jack easily, with powerful punch outs and fast enough to rip its wings off doing a WOT stall spin.

we persevered with the 6.6:1 for some time which is also good and draws around 14A.

oh, the JJ weighed 23oz AUW.

watt_the?!
10-15-2005, 11:08 AM
....

http://www.maxxprod.com/pdf/HGdata.pdf


that table link is excellent.

Tim.

flypaper 2
10-15-2005, 03:30 PM
I have the GWS Zero running the same Himax 2025 4200. Using the GWS drive that came with it, C drive which is 5.33 to 1 on a 10-8 GWS HD prop on TP 2100 bat. Between 45 and 50 MPH Your 30 amp esc is more than enough. Have fun and holler for help:p

LuckyArmpit
10-18-2005, 08:30 PM
I'm running a himax 2025-4200 w/6:1 gearbox on a mini funtana. Use a 10x7 prop and 3S lipos. I hand launch it at half throttle. Full throttle and the dang thing disappears straight up. If I go to a 12x6 prop, it'll have roughly 36 oz. of thrust. Not bad since the plane weighs 21 oz.
I also have a GWS Corsair. It runs on a park 400 outrunner with 3S lipos.
I think the prop is a 10x4.7 apc. It goes like mad too.

Dave...