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Trex 450 Pinion size question

Old 07-14-2010, 01:50 PM
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Default Trex 450 Pinion size question

I have a 450 v2 and using a 13 tooth pinion. I live in Colorado but was in cali and while doing loops, rolls etc I can get tighter faster loops. I guess the lower altitude was giving me more power. So up at 7000 feet my loops are slower and bigger. If I switch to a 14 tooth pinion, would that give me a better head speed quicker loops? And would it drain my battery quicker or cause some other adverse effect on something? Thanks for any help.
Old 07-21-2010, 02:43 AM
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Default RE: Trex 450 Pinion size question

for what setup are you planning to use the 14T? what motor?
Old 07-21-2010, 07:50 AM
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Default RE: Trex 450 Pinion size question

I'm using the stock 430xl by Align and stock speed controller. Thanks
Old 07-21-2010, 08:01 AM
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Default RE: Trex 450 Pinion size question

the stock motor is already 3700Kv.. using 14T will be really fast... am not sure if you will like the headspeed... 13T will do fine.. 14T will be extremely fast...




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I'm using the stock 430xl by Align and stock speed controller. Thanks
Old 07-21-2010, 08:12 AM
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Default RE: Trex 450 Pinion size question

I think I'll try and see what happens. Thanks for the info.
Old 07-22-2010, 01:53 AM
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Default RE: Trex 450 Pinion size question

you'll have fun with the 14T... extra power and speed.. just make sure that all your parts are well balanced.. it might cause vibration and breakage
Old 07-22-2010, 07:46 AM
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Default RE: Trex 450 Pinion size question

I tried the 14t and it did make a difference. Lots tighter rolls, loops, etc but didn't seem that much faster in a hover. I like it though so far. Thanks for the info.
Old 07-22-2010, 08:18 PM
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Default RE: Trex 450 Pinion size question

if you have a chance to use the 450M motor with 14T.. you will find it really strong as torque is there less bogging more controlled head speed
Old 08-05-2010, 06:22 AM
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Default RE: Trex 450 Pinion size question

I ran a 3700kv Tonic-x Motor with 12T pinion and the heli was t!ts. On that motor, 14T would have been super over kill I think. I guess it really depends on the motor which pinion you should/shouldn't run.
Old 08-05-2010, 08:16 AM
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Default RE: Trex 450 Pinion size question

Yeah the 14t seems to be the trick at high altitudes anyway un less I have a weak motor. Flies good now though. Thanks

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