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Old 06-30-2011, 09:40 PM   #1
Nitroboy
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Default RJX 50 EP

hi all,

could anyone help me clarify these for me? I am looking forward to buying a motor for my 50EP and was wondering:

a) whats the pinion hole diameter? is that 6mm? (meaning i need to buy a motor with 6 mm shaft?)

b) the pinion sizes that RJX has? Is that 13 teeth and 14 teeth?

thks a lot

cheers
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Old 07-01-2011, 01:49 PM   #2
garfield2412
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Quote:
Originally Posted by Nitroboy View Post
hi all,

could anyone help me clarify these for me? I am looking forward to buying a motor for my 50EP and was wondering:

a) whats the pinion hole diameter? is that 6mm? (meaning i need to buy a motor with 6 mm shaft?)

b) the pinion sizes that RJX has? Is that 13 teeth and 14 teeth?

thks a lot

cheers
hi Nitroboy
the pinion hole diameter is 6mm, any 4035 scorpion or pyro 700/650 fits into it.
the pinion size is 10t or 12t. you can use 90t, 93t or 100t main-gear. so you can find the perfect setup for you.





it depends on LiPo setup (12s or 10s) which pinion/maingear to use.
  • i use 12s 10t/100t on my 90EP with scorpion 4035-500
  • a buddy flies 10s 12t/93t on his 50EP with scorpion 4035-560.
  • another buddy flies 12s 10t/100t on his 90EP with Pyro 30-12
  • i know an RJX team pilot who flies the new pyro 650 @10s on his 50EP
some guys use scorpion 50xx motors with 440 rpm (on 90EPs).
just make some calculations for the HS you prefer. i think 1700-2200HS should be fine for a 50EP for slow flights and 3D.
4035-560 @ 10t/93t should be a very good setup with lots of power

have fun with your new machine! good choice
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Last edited by garfield2412; 07-01-2011 at 08:53 PM..
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Old 07-01-2011, 08:26 PM   #3
Nitroboy
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thks a lot for the advice..

i am planning to use the align 700MX motor which has a 6mm shaft. The scorpion and pyro ones are more expensive..

i read some good reviews about the Align motor..it should be ok, right?

cheers
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Old 07-01-2011, 08:35 PM   #4
garfield2412
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whats the kv for your 700mx?
is it 470, 510 or 530?
10s or 12s setup?

510kv@10s@12t/93t should be very good for 50ep
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Old 07-01-2011, 08:53 PM   #5
Nitroboy
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i was thinking of getting the 510 KV..

i think i will go with the setup you recommended..RJX advises the same setup too..

i am a beginner at flying..So, i am not doing any sports flying etc

cheers
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Old 07-01-2011, 09:04 PM   #6
garfield2412
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readyheli.com/headspeed-calculator.html


Spoolup with Governor @ 65%: 1944
Spoolup with Governor @ 75%: 2061
Spoolup with Governor @ 85%: 2178
calculated with 10s, 700mx 510kv, 12t/93t, and align esc (governed)


should be fine with your setup!
good choice, 1944rpm for hovering and sports flyings will give you great flight times and smooth flight over all!

the rjx helis are great!
have fun with your build and i'm looking forward to your maiden!
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