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T-REX 450 › Correct Headspeed SE V2
07-09-2008 10:54 PM  9 years agoPost 1
KarbonBird

rrKey Veteran

Australia

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What is the correct headspeed for a SE V2 with stock motor, ESC and blades?

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07-10-2008 06:35 AM  9 years agoPost 2
Sean Williams

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Santa Clarita CA

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On 13t about 3000 headspeed.

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07-10-2008 06:38 AM  9 years agoPost 3
gravydrive

rrApprentice

Jacksonville, FL

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Check out this headspeed calculator:

http://www.readyheli.com/Online_Hea...ulator_s/81.htm

People use anywhere from a 11T to a 13T on the 430XL.

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07-10-2008 06:43 AM  9 years agoPost 4
bilbo

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Boston, MA - USA

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That depends which motor pinion you use. Doesn't the V2 come with 12 tooth and 13 tooth pinions? Anyway, with the stock 430XL motor, your target head speed should be approximately:

11 tooth pinion - 2600 RPM
12 tooth pinion - 2800 RPM
13 tooth pinion - 3100 RPM

The fact that you're asking this tells me you're probably a beginner, so I'd say go with the 11 tooth pinion. 2600 RPM is just fine for learning hovering, forward flight, and basic aerobatics, and will give you a bit more flight time than using a higher head speed. Go to the higher head speeds when you want greater responsiveness, top speed, and stability, at the expense of flight time.

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07-10-2008 03:53 PM  9 years agoPost 5
USNAviationjay

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Houston Tx USA

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Err wait!
So by following Aligns suggested 13t on both my SA and my SE V1 I'm actually using too much headspeed for non 3d? and could save myself some batt time?

I'm not into 3D at all I FFF and FF and some stalls and such but that's about it.
I used the 13t since it was recommended in the manuals.

I bought a 12T but never used it and have an 11 as well..

would the drop in headspeed be a noticeable difference now that I'm used to the 13t?

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07-10-2008 04:28 PM  9 years agoPost 6
bilbo

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Boston, MA - USA

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Err wait!
So by following Aligns suggested 13t on both my SA and my SE V1 I'm actually using too much headspeed for non 3d? and could save myself some batt time?
I'd say definitely. Try an 11T and 12T pinions and see which one you like. I like 2600 RPM for just cruising around, and 2800 is fast enough for all of the aerobatics I currently do, like stationary flips, loops, rolls, 540 stall turns, cuban 8s, flying around inverted, etc. In fact all of this stuff works just fine with 2600 HS, and I get an extra minute of flight time, but I like having the faster cyclic response that 2800 HS gives when doing aerobatics. You only need 3000 RPM or above if you're going to be doing a lot of 3D stuff like tic tocs, etc.

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07-10-2008 04:33 PM  9 years agoPost 7
bilbo

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Boston, MA - USA

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would the drop in headspeed be a noticeable difference now that I'm used to the 13t?
It'll definitely make a very noticeable difference. The main negatives will be that the heli won't be as responsive to cyclic or collective changes, it will have a lower top speed, and it will be a little less stable. On the plus side, going from 13T to an 11T will make the heli feel more relaxing to fly, be a lot quieter, do less damage in crashes, and should give you a full minute or two more flight time per battery.

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07-10-2008 04:40 PM  9 years agoPost 8
USNAviationjay

rrElite Veteran

Houston Tx USA

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Ok so other than a little less stability its gonna mellow it out quite a bit.

neither of them feel that hyper to me now like I said I fly like a granny drives =P

how much more unstable are we talking? it feels really good in hovers right now and I'm sure after flying micros will still feel pretty stable but that does worry me a bit.

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07-10-2008 04:58 PM  9 years agoPost 9
bilbo

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Boston, MA - USA

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Oh, it'll still feel much more stable than a micro heli. It just won't have the same locked in, crisp feeling at 2600 RPM that it has at 3000 RPM. I found I liked the feeling of how it flies at 2800 a little more than 2600, but if I wasn't doing lots of aerobatics I think I'd stick with 2600 anyway for the extra flight time. Anyway, it only takes a few minutes to change pinions, so if you already have an 11T and 12T sitting around, just give them a try and see what you think. It really comes down to personal preference.

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T-REX 450 › Correct Headspeed SE V2
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