Conversion help

[nitros]

I'm planing to convert a trex 600n to electric, I just ordered the HK yep 120hv esc, now I'm looking for a suitable motor, I planing to run it on 6a.

Any suggestion are appreciated

[psychosaffa]

6a? Do you mean 6s? If so, I'd suggest more cells, at least 8 unless your just going to be using it for scale flying. The 600 on 6s is know to kill lipos.

Sent from my Desire HD using Tapatalk 2

[paulsouthport]

Align 600m 1200kV is nice, Turnigy T600 is cheap, on paper it's more powerful than the Align but I'm not so sure

[trillian]

I would assume you'd want to go 12s on a 600, so not sure exactly what you meant by 6a. The 600n is very easy to convert, you can just get a 600e motor mount, use some washers to shim it to fit. The space for the LiPos is not quite as elegant as the 600e or pro but it's not a big deal. It is one of the easier nitros to convert because the frames are wide and you have a big main gear.

For 6s something like the Scorpion 4025 / 1100kv or Align 600m, for 12s the same thing in a 510kv. 6s is known to be very hard on LiPos in this size heli but if you're just learning, flying gentle circuits etc. it will be fine, you can prob get 6 or 7 minutes of gentle flying on a 5000mah pack at 1800/1900 headspeed. My Fusion is 6s right now with a 4025 motor and it will do all the basic aerobatic stuff and flies just fine but for anything else it lacks punch. If you already have the 5000mah packs then it kinda makes sense but if not then you may as well go 12s from the beginning if you're already getting a HV ESC. (you'd need pairs of 3000/3300mah packs for a 12s setup).

It will be something like this when converted (from a thread on RR);

[nitros]

Yes the idea is to get more out of my 6 x 6s 4000 packs, I will just use to learn, as the logo is too expensive as learning tool.

[trillian]

Yes the idea is to get more out of my 6 x 6s 4000 packs, I will just use to learn, as the logo is too expensive as learning tool.

OK, that makes good sense. With the 4000mah packs you should still get good flight times as long as you don't try for crazy headspeeds. (it should fly quite nicely at 1950/2000 ish and hover / circuits at around 1750/1800 depending on how hard the dampers are you may be able to hover at lower headspeeds and the lower the headspeed the longer the flight time). You'll want to choose your pinion so that your highest desired headspeed is reached at max throttle, using a rough guide of motor KV X 22.2 volts X 90% (the 90% gives you a little headroom for efficiency). Basically you want to use the smallest pinion that will give you your high (idle-up) target headspeed so that you're giving the motor the lowest load in terms of torque, this way you're making it easiest on the motor, ESC and Lipos and aiming for the longest flight times.

[nitros]

Basically you want to use the smallest pinion that will give you your high (idle-up) target headspeed so that you're giving the motor the lowest load in terms of torque, this way you're making it easiest on the motor, ESC and Lipos and aiming for the longest flight times.

I don't understand the pinion bit, I used MrMel hs calculator, if u play with the size only, the bigger the pinion, the higher the hs, is the opposite of what u said

[trillian]

I don't understand the pinion bit, I used MrMel hs calculator, if u play with the size only, the bigger the pinion, the higher the hs, is the opposite of what u said

No it's not the opposite of what I said. I am just saying you want to choose the smallest pinion that still gets you whatever headspeed you are looking for as your highest target headspeed, so that your high (idle-up) headspeed is reached at max throttle (or maybe slightly less for governor overhead). The main idea being not to over gear or try for too high headspeed as you'll be making the ESC and motor work harder.

[nitros]

Yeh I got it now, I re read it. Thanks for the advice

[trillian]

Yeh I got it now, I re read it. Thanks for the advice

No problemo amigo. 'Should be a piece of cake to convert. Hopefully there is enough space under the motor to get the Lipo where you need it in the frame for the right C of G. If not you may be able to make some room using some kind of spacers so the bottom tray sits a bit lower, but with a little ingenuity it should not be too tough to do.