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Author Topic: Pinion for Scorpion 4525 520kv Ult?  (Read 2131 times)

Offline beans07

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Pinion for Scorpion 4525 520kv Ult?
« on: July 03, 2012, 06:46:04 PM »
What pinion should I use with the Scorpion 4525 Ult 520kv motor and Scorpion ESC with the vbar gov?

Aiming around the 2150HS.

Offline Yanick Larouche

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Re: Pinion for Scorpion 4525 520kv Ult?
« Reply #1 on: July 03, 2012, 08:08:38 PM »
Hi !

Look there!

http://www.readyheli.com/headspeed-calculator.html

Readyheli have a good headspeed calculator!

i think you need 13T.

Thank's !

Yan
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Offline Jean-Luc Bolduc

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Re: Pinion for Scorpion 4525 520kv Ult?
« Reply #2 on: July 04, 2012, 06:31:41 AM »
Would also try a 12t pinion. Not familiar with vbar governor, but with my Jive 120HV, and Xera 500kv, it requires a 12t  for 2150hs.
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Offline Adam.Melton15

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Re: Pinion for Scorpion 4525 520kv Ult?
« Reply #3 on: July 04, 2012, 09:53:18 AM »
On the old scorpion esc i ran a 14t to get 2200 head speed.

With the new scorpion it seems to give me a lot more head speed and am now down to a 12t pinion for 2200 at around 91%

Offline Matt Botos

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Re: Pinion for Scorpion 4525 520kv Ult?
« Reply #4 on: July 05, 2012, 08:50:32 PM »
Try the 12T and spin the head at 2150. This was my favorite setup for both power and duration.

Thanks,

Matt

Offline Adam.Melton15

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Re: Pinion for Scorpion 4525 520kv Ult?
« Reply #5 on: July 07, 2012, 05:48:53 AM »
what flight times are you getting and which packs? on this setup Matt