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General RC E-Heli Talk General discussion forum for electric powered rc helis.

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Old 09-05-2011, 10:21 PM   #1
Drifter
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Default 450 class power systems, advice needed

I'm looking to move up to a Trex 450 Sport, but I am wondering if the motor in the "super combo" deals would be too powerful?

I am not going to be doing wild 3D flight, much more interested in sport flying and scale flight, a decent flight time is very desireable too.

Can I achieve this using the deal motor, or would a more economical motor be a better choice. I am guessing that a lower headspeed will be more stable and aid flight times, but is that done by just restricting throttle or using a smaller pinion?

What sort of flight time can be achieved with the deal motor? (the 450M)

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Plane: ST Model Discovery - awaiting repairs
Heli: E-Flite Blade SR - training in progress
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Old 09-06-2011, 12:38 AM   #2
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You can certainly use that setup if you want to although if you are trying to save money you may be able to go another route. You can turn an CP heli into a more tame flyer by adjusting your throttle and pitch curves. I learned to fly on a 450 tamed down to a trainer.
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Old 09-06-2011, 01:13 AM   #3
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It's not to save money, since the deal is a lot cheaper than buying the electronics separately. I just need to get my head around what will affect what and how.

And then save up to buy it

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Old 09-06-2011, 02:34 AM   #4
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you will be fine then as long as you tame down the throttle and pitch curves in your TX
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Old 09-12-2011, 04:34 PM   #5
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I'm going to step one step further and say DO NOT buy a slower or less powerful motor.

You may and many do ... I know I was one until I was shown ... that a slow headspeed is good ....... NO ! The model is designed for a headspeed range and within that range it becomes stable and answers control input better. Slow down the headspeed and your inputs have to be increased to make up for it ... making the heli go all over the place as you 'fight' to keep it steady.

Final comment - most RTF / Combos are not sorted to 3D standard ... they are more general flight and so the motor should be OK.

My RTF has a 3500KV in it and for my second - I bought a 3700KV ... difference ? Not a lot !!

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