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Old Jul 29, 2002, 10:42 PM
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Motor Upgrade ?????????

Currently I have a sky scooter with stock motor. After reading all these threads I was thinking about purchasing a mega ACN16/15/4. Looking to go vertical and maybe also getting the mirage 2000. For a controller I am also looking into the TMM« 40eľ3ph, from nesail.com. What I am wondering is this. Is this controller any good and what difference does the amount of turns(winds) that the motor has? From what I can tell is the less turns the higher RPM but at a cost of runtime and torque. Am I on the right track and is this a good motor for what I want?
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Old Jul 30, 2002, 12:27 AM
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yes this is a good motor and a great controler for what you want(In my opinion) Ihave the same thing axcept i have the 3 turn and it is in a projeti. You are on the right track axcept for one thing. Run time stays pretty equal.

Mal
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Old Jul 30, 2002, 05:24 PM
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Can you tell me why I would want a 3 turn compared to say a 5 turn? I guess that if I would want to have more power than speed I would go with a higher turn but couldn't I just gear a 3 turn if I wanted power?
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Old Jul 30, 2002, 05:36 PM
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you sure can. Now I am not too sure on this BUT i believe that if you were to have a 5 turn you could swing a bigger prop that a 3 turn WITHOUT having to use a gearbox. As a example The Jeti Phasors are famous for this. But you are going to be putting this on your zagi correct? If so I myself would just go with the 3 turn this will give you PLENTY of power and alot of speed if you do not want so much speed THROTTLE back extended flight time!

Mal
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Old Jul 31, 2002, 06:29 PM
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Any recommendations on the prop? I plan on buying a mirage 2000 and want a lot of speed but I also want a gearbox if I decide to go for power. A recommendation on both the prop and gearbox would be great.
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Old Jul 31, 2002, 06:58 PM
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Varioprop this is the one you can adjust pitch with get a 5.6 length blad and a 3.2 mm hub OR get a speed cam 5x5 if you want power with a gearbox go with a 2.5 to 1 gear ratio with a 7x4? I am not sure on the pitch of a 7 long blade but i think it is 7x4 or 7x6 a MPI gearbox would probbaly work for you this will give you three pinions for the motor shaft to chose from I myself would go with the Bigest pinion.(2.5)

Mal With a 5x5 prop on the mirage you ewill have PLENTY of power and speed you should just about be able to send that plane outa sight virtically.

Mal
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Old Jul 31, 2002, 10:04 PM
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Thats some good info, thanks. Now, where is a good place to order these props? I also want to order a new battery for the mirage. From what I read it takes a 2/3 A and the place I usually order from is out of stock. Thanks for all your help.
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Old Jul 31, 2002, 10:20 PM
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I can't imagine putting anything much hotter than a 6v s400 in a sky scooter. I ripped off a wing midair on mine on the maiden flight, leveling out from the slightest little dive. I would cover it in zagi tape at least, and maybe add a CF spar...
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Old Jul 31, 2002, 11:54 PM
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Poorboy
you can get the Varioprop from www.aircraft-world.com. Now these are a little expensive BUT WELL WELL worth the $$ You can expect to pay about $30.00 but this is the BEST 30 bucks i have ever spent. I just got back from trying my new one out and all i can say is WOW!! I have a mega 16/15/3 on my projeti. I had a speed cam 5x5 a 4.7x4.7 and a 5.5x4.3 on this plane and the vario has them all beat,in looks sound and perfomance. Just by sight i know this plane has picked up a good 15mph! This just from a PROP I have the 5.6 length of blade with a 3.2 mm hub. this is what you would be best to get as well if you were going to go with this setup. if nothobby-lobby should have the graupner speed cam props(which are still a decent prop) right now i am running my vario with 4degrees pitch and this thing SCREAMS! i do not think you could get a better setup.

Malcom
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Old Aug 04, 2002, 11:57 AM
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I was playing with P-Calc and wanted to see the difference between the 16/15/3 and the 16/15/4 and it apears that it calculates a runtime of the 16/15/4 twice that of the 16/15/3. You stated that runtime pretty much stays the same. Am I missing something here? What kind of run times are you getting with that projeti and the 16/15/3?
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Old Aug 04, 2002, 12:17 PM
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Poorboy

My Appolagies you are CORRECT (or P-Calc is) You are going to get better performance from the 3 turn. Mind you what P-Calc is estamating the run time for the 4 turn is what i get with the 3 turn. And with throttle managment i get in the 6 to 7 min range. If you want to have longer flight times with reduced performance go with the 4 turn if notthe 3 this is a nice thing about this sport YOU get to choose. Maybe someone else can shed sme light on just what kind of performance drop you would get using the 4 turn over the 3 and just how much as well.

Mal
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