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T-REX 450 › Brushless Info..
12-01-2007 03:50 AM  9 years agoPost 1
HELIVAGUY

rrApprentice

Monmouth County,NJ USA

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i have a new Ark-126 12 pole brushless motor (3600kv),
was thinking about using it in my trex sev2 with a 11 tooth pinion.
does anybody have any knowledge or experience with this motor?
all i know is this was an optional motor for the ark x-400 heli (same as helimax mx400)when it came out in 2005 i beleive.

Have a Heliva Day!

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12-01-2007 05:26 AM  9 years agoPost 2
wizard

rrApprentice

Jackson Ms.

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lil low on the Kv

that would put you at about 2490 head speed on 3s packs.
try a 13 tooth that would give you 2900 +/-

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12-01-2007 02:58 PM  9 years agoPost 3
HELIVAGUY

rrApprentice

Monmouth County,NJ USA

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wizard how do you figure 2490?
150 tooth main gear,3s lipo,3600kv,11 tooth pinion =2637 rpm,12 tooth pinion = 2877 rpm,13 tooth pinion =3117 rpm...
calculating headspeeds is not a problem for me, i was looking for any info on the motor brand.

Have a Heliva Day!

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12-01-2007 05:23 PM  9 years agoPost 4
wizard

rrApprentice

Jackson Ms.

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you are figuring it on 90 percent I was figureing at 85

most motors run best at 85 percent EFFICIENCY and stays cooler.

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12-01-2007 05:33 PM  9 years agoPost 5
HELIVAGUY

rrApprentice

Monmouth County,NJ USA

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wizard your correct thanks

Have a Heliva Day!

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