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With Wings it'll fly

Old 09-11-2010, 11:38 PM
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Default With Wings it'll fly

I've got a Caster Racing F8T with a Castle Monster 2200kv combo with 2 7.4v 20c 5000mah lipos with two 40C 5000 mah on the way. Even on 20C this thing thinks it can fly. What should I add to the truggy to keep it grounded?
Old 09-12-2010, 11:14 AM
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Default RE: With Wings it'll fly

ORIGINAL: powerlifter450

I've got a Caster Racing F8T with a Castle Monster 2200kv combo with 2 7.4v 20c 5000mah lipos with two 40C 5000 mah on the way. Even on 20C this thing thinks it can fly. What should I add to the truggy to keep it grounded?
uhhh the 20c have nothing to do with it's speed in all truth be glad you haven't damaged them
20C 5000mah lipos put out 100Amps of power the ESC you have needs to have 120Amp capable batteries otherwise it could damage them, and cause them to swell or in worst case rupture and start on fire.
The ones you ordered will be great for the combo though seeing they will have 200Amps available to be drawn.


BTW I got that same combo in a jammin X1 CRT I had to up my spur gear to 64 teeth(was running a 48t spur) to keep the front end on the ground with a 12t pinion. On 48t I was able to pop wheelies when it was at 70% throttle... Now I can actually hit 100% and keep the tires on the ground
If there is not a larger spur (or smaller pinion) availale you can do 2 other things. One is add weight to the front end, other (which is free) is to hook the ESC upto your PC and drop its total power available using the castle link software.
Old 09-12-2010, 11:16 AM
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Default RE: With Wings it'll fly

It doesn't matter what the ESC is rated for. You are worried about what the motor is rated for.
Old 09-12-2010, 01:39 PM
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Default RE: With Wings it'll fly

I'll look into changing the gear ratio then. The current pinion gear is 18T. Spur is 44T but will look into a 64T to keep it grounded then. I'm not interested in wheelies and backflips. I want serious controllable power. What would be reccomendable?
This is what Castle says about the motor:

Max Input Volts: 25.2
Amp Rating*: 120
Weight: 424g (15 oz)
Motor Diameter: 39.98mm
41.78mm with fins
Motor Length: 75.18mm
Shaft: 5mm
Bearings: Oversize ABEC-1 front and rear
Connector: 6.5mm
Note: Motor wires OK to shorten
Old 09-12-2010, 06:42 PM
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Default RE: With Wings it'll fly

Well like I said the spur is one option.
The free way is to just adjust the power band through the castle link software, and while you are at it you can change the way it brakes (the stock setting was causing my RC's to literally flip forward when tapped)
I think I set mine to 50% drag, and it stops fine now.
Old 09-12-2010, 08:18 PM
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Default RE: With Wings it'll fly

I'll look into using the link software. Any ideas on gear ratios?

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