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Free Items This forum is in place to offer items to the community that are not used/needed any longer and are given away at no charge. Shipping is between the giver and the receiver of an item. Wanted item threads will be deleted.

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Old 07-08-2010, 08:07 PM   #1
mubariz
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Question props? which way? hobbyking? and got anything lying around

just realised something these are the two planes ive built (minus electronics, thats another story) http://www.​mikeysrc.com​/Sport-Train​er.htmland http://www.​aroundtuitvi​deos.com/f22​.htm
the motor facing opposite ways on each plane how does that work?
wont air be being pushed in the wrong way on one?
do u just turn the prop around?

also this is my 1st plane and also my 1st scratch built, i ordered from hobbyking, but they asked for card image so i cancelled my order, now have to w8 4-6WEEKS for refund (hobbyking have refunded it so i cannot have store credit, its the bansk who are taking so long!) anyway im only 15 ansd spening like 220 dolalrs on my 1st build but like 60 dollars is postage.

Any way if anyone ahs any spare esc or motors they dotn ened or other parts i could sue for my next build, cus im only buying enough parts for one plane and am planning to velcro them and keep switching them over, so if anyone has any spare part THEY DONT NEED im all open thanks
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Old 07-08-2010, 09:30 PM   #2
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First off, welcome to WattFlyer!

I went ahead and deleted your other post in Foamies as you really only need one. I'm leaving this one here in Free Items as you are asking for stuff.

Regarding prop direction, these days you don't need any special pusher props when doing planes like the pusher F-22. You simply mount the prop so that the numbers printed on the face of the prop face the front of the plane, then hook up the ESC to motor wires so that the motor spins in the proper direction. If the motor spins the wrong way, just swap any two of the wires (doesn't matter which two) and the motor should now go the other way.

Regarding using velcro, I know you think that is a good idea so that you can swap the power systems between the two planes, but I see two issues:

1 - Velcro does not hold well, and I certainly would not want to mount a motor or servos with velcro only (receivers, ESCs and batteries are fine though).

2 - The two planes you posted take very different power setups regarding motors and props. The F-22 will most likely only take a maximum 6" prop. This means you need a high kv motor (like 2200kv) in order to spin the smaller prop with enough RPM to give you the necessary power needed for that plane to fly. The trainer needs more like a 900kv motor and a large 9" prop.

Good luck on your build(s). Feel free to post questions in the appropriate forums for help.

Pat Gagnon

Owner - Nico Hobbies

Your source for micro pusher jets!
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Old 07-08-2010, 09:59 PM   #3
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thanks, good detailed reply,

1) but the motor would be screwedn in so could just unscrew it?

2)servos are cheap so i will jsut probably put them in permenant but use as less as i can (btw i got 2 super cub 5wired servo if anyone want them, someone sent me them bu they 5 wired and i need 2 wired), so because im gnna have a servo shortage because of wieght classes im gnna use one servo for both aierlerons (on the f22 only 2 servos and delta mixing) i wanted a parahute drop mechanism, but maybe when this money has cooled dow, spent a bit too much for my age (including refund and spending that refund money on same order but with paypal instead ) hopefully when im older and when i get a job in the gap between collage and uni, this kind of spending will be minor

basically are u saying turn the prop around? thanks
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Old 07-08-2010, 10:53 PM   #4
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Originally Posted by mubariz View Post

basically are u saying turn the prop around? thanks
Yes, turn the prop around so the lettering is facing forward into the airflow.

Mike

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Old 07-08-2010, 11:57 PM   #5
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1) Yes, if the motor is screwed in, you can unscrew it and move it. But like I said, the two planes you listed do not take the same motor.

2) Good cheap servos can be found in many places. Both Mike (Sir Crash-A-Lot) and I sell decent servos on our websites (see our signatures). And I'm sure you meant that you need 3-wire servos (one positive, one negative and one signal wire).

Pat Gagnon

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