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Electric Stunt => Gettin all AMP'ed up! => Topic started by: Warren Allred on December 07, 2009, 12:26:13 PM
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Hi all,
I'v got a buddy who has practically given me a Hangar 9 PT-19 ARF.
I'm all electric now and want to put in what I have around left over from an old R/C project.
Thoughts on my setup would be appreciated:
One of my Z-Tron timers
E-Flite Power 32 Brushless Outrunner: http://www.horizonhobby.com/Products/Default.aspx?ProdId=EFLM4032A (http://www.horizonhobby.com/Products/Default.aspx?ProdId=EFLM4032A)
E-Flite 60-Amp Pro ESC: http://www.horizonhobby.com/Products/Default.aspx?ProdID=EFLA1060 (http://www.horizonhobby.com/Products/Default.aspx?ProdID=EFLA1060)
E-Flite 30C 3200mAh 4S: http://www.horizonhobby.com/Products/Default.aspx?ProdId=EFLB32004S30 (http://www.horizonhobby.com/Products/Default.aspx?ProdId=EFLB32004S30)
My initial thoughts are probably too much power and on the heavy side - But since I already have it all I may just put it together and see how it goes... y1
It would at least get me flying while I try to figure out my next build for this same setup.
Thanks in advance for the input! H^^
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Hi Waren:
Congrats on the PT. I see where you found the thread on the conversion I did - hopefully that will give you a couple ideas you can use. However YOU still have to post some pix! y1
* From Horizon's site it looks like the Power 32 is a 770kV motor, I think that is going to drive you to use 6 pitch (or higher) props. I'd say fit it with a APC 12x6 pusher prop at around 8800 RPM and you should be pretty close. The motor weighs 7 oz - putting it in the same general size class as the popular AXI 2826 series. I think the E-Flite motors are built very well and in this app should last near forever.
* The E-Flite ESC is a "simple" ESC, that does not govern like a Phoenix. The only problem I have with mine is that it has a throttle safety that prevents it from starting up at high (>50%?) throtle settings. I have to turn the RPM down to nothing and set ot every flight. Pain in the patootie! I do not know if you can "trick" the ESC with a low initial start-up on the Z-Tron. You will also have to throttle up over the course of the flight to keep your RPM's up as the battery wears down.
*4S x 3200 sounds like the right size pack too.
I also suggest you read the postings in the ARF section on the PT-19 ARF. The PT's tend to build tail heavy (your solight heavy compenets are a good idea) and you mujst take care to install the pushrod into the innermost or at least the iddle hole in the Bellcrank - NOT the othermost hole. I also thought mine semed a little "tippy" so I bent the LG forward and used 2.5" lite flite wheels for my grass field.
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Thanks for the input Dennis - I also have Phoenix 60 ESC so should probably go that route.
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Well I finalized my setup...
I've decided to go with the Phoenix 60 and my E-Flite Power 46 on the 4s 3200 instead of the Power 32.
3 oz heaver but with that KV rating and an APC 12x6E I should come right out at about 5.5 second lap times on 60ish foot lines...
Now to find the time... #^
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Warren,
What is your RTF weight going to be? Your motor/esc are big enough to fly a Strega with a 5S or 6S pack. I was curious as to why you choose to go so big as the PT-19 is a small airframe. The Power 15 is more than enough and offers huge weight savings.
Thanks,
Archie Adamisin
Muncie, Indiana
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Well, it'll be a little heavy - But it is what I have around and just want to use it while I build bigger.
I was given the PT-19 for $25 (new) and not sure if I can swing much more in the budget to get a smaller motor and batteries.
The battery, motor, esc and timer weighs almost 7 oz. more than my buddies Evo .36 with muffler and 4 oz of fuel. So I am dealing with that plus probably about 3 oz in the tail to offset depending...
So yes, possibly up to 10 oz. more. ~^
It'll keep me busy and start gettig me flying pretty quickly though... #^
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Warren,
If that is what you had, then that is exactly what you should use. I thought you bought it all new for the PT-19. You certainly have some nice stuff to use in a larger bird when you decide to do so.
I look forward to hearing your results.
Archie Adamisin
Muncie, Indiana
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Warren,
If that is what you had, then that is exactly what you should use. I thought you bought it all new for the PT-19. You certainly have some nice stuff to use in a larger bird when you decide to do so.
I look forward to hearing your results.
Archie Adamisin
Muncie, Indiana
Yup, it's already in the hangar out of one of my former .40 sized R/C pattern birds... ;)