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T-REX 700 › Anyone using the Hacker A50 12L on 700e v2?
10-14-2011 02:25 PM  6 years agoPost 1
Zaaaguy72

rrElite Veteran

MN

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I am looking to change out the stock 700mx 510 motor in my 700e v2 with the Hacker A5012L 470kv motor. What pinion are you using to keep a 2150 headspeed? Do I need to buy the KDE adjustable motor mount? Is there a slant tooth pinion available to do this?

Team Sanjel!

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12-15-2013 03:16 PM  4 years agoPost 2
n8rloves2fly

rrApprentice

omaha,ne USA

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I'm interested in doing this also

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12-15-2013 03:26 PM  4 years agoPost 3
DemetriusUSN

rrVeteran

Virginia Beach, Va USA

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According to Mr Mel's Headspeed Calulator in gov mode, the 13t pinion is needed for that Headspeed. Hope this helps.

Minicopter Diabolo 800, Minicopter Triabolo 700, Minicopter Diabolo 700, Minicopter 550,Compass 6hvu, Devil 380

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12-15-2013 05:04 PM  4 years agoPost 4
Wave

rrKey Veteran

Illinois

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Hacker motors have always let me down in heli's.

They either run way too hot or slam the packs while providing no real performance increase.

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12-16-2013 12:46 AM  4 years agoPost 5
n8rloves2fly

rrApprentice

omaha,ne USA

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Thank you, I have a 13 and a reduced spur also, I'm looking for somthing easy flying, most flights under 2000 more like 1950 on Gov. Im not so good with figuring out Mr. Mel's calculator.

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12-16-2013 11:34 AM  4 years agoPost 6
Richardmid1

rrProfessor

Leeds, England

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I have that motor on my Logo 600SX and its very good but there again thats in a 600 so it isn't worked very hard.

If you work on 15% over head for the governor and calculate max HS like this:

112T / 13T = 8.615

470kv x 44.4v = 20868rpm

20868 / 8.615 = 2422 rpm max HS

So if you want 2150 +15% = 2472

So you can get 2150 with a 13T pinion but with slightly less overhead and a CC ESC may tell you off for not having enough over head!

I prefer to have less over head than CC recommends for their governor anyway because the power is more managable and its kinder on the ESC.
Thank you, I have a 13 and a reduced spur also, I'm looking for somthing easy flying, most flights under 2000 more like 1950 on Gov. Im not so good with figuring out Mr. Mel's calculator.
You could get 1950 with the stock gearing (112/12) and a 470kv motor.

60% of the time, it works every time!

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