[NSRCA-discussion] E motor choice

Tue Jan 12 23:00:54 AKST 2010

Chris,

Make sure to check the length of the motors.  Helio 63 was designed around
4020-14.  14 has been dropped, but the rest are still available.

Hyperion 4020s are 36.5mm length (not including 6.5mm boss at rear).

Hacker is longer.   12S is 2.37", 12L is 2.75"  If the motor box is already
built & attached to the fuse, he will have to cut it to use longer motor.

Scorpion 4020 series should work good because of the short length.  Tommy S
used one on Helio 63.  It is 1500W max motor.

Dualsky 4240 or 4250 may work also.  No sizing data available from 2dogrc or
dualsky websites.

I haven't had a chance to look at the actual Helio kit even if I am a
Hyperion dealer, but some of Hyperion planes come with motor box already
attached to fuse for faster finishing.

4020 series 500 ~ 900 watts motor  with burst up to 1100W.

If motor box is not a problem, any of the above motors will work.

Ihncheol

From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of krishlan
fitzsimmons
Sent: Wednesday, January 13, 2010 12:56 AM
To: General pattern discussion
Subject: Re: [NSRCA-discussion] E motor choice

I think it's best for him to get the 5s, and I think this is his thinking,
because he can use those in a 2m also. He was thinking the Hacker A40-12L.
Good motor, 1100w, 410kv. But I think this may be too much for it. I'm
wondering if the A40-12S or 14S would be better if he gets a Hacker. 900w,
610kv. 

Not sure. 

Thx

Chris 

  _____  

From: "atwooddon at aol.com" <atwooddon at aol.com>
To: nsrca-discussion at lists..nsrca.org
Sent: Tue, January 12, 2010 10:28:11 PM
Subject: Re: [NSRCA-discussion] E motor choice

900 should do it but he could buy a motor in the 1000-1100 range and have
some reserve by dropping the prop size a little or limiting the throttle
high end.  Then if Chris needs more, it's there.  Or, he could use a 4S pack
to start and could always move to a 5S if need be.

Don

In a message dated 1/12/2010 9:43:36 P.M. Pacific Standard Time,
homeremodeling2003 at yahoo.com writes:

Hey Don. 

Thanks for the condolences on my plane. 

It's Chris Johnson from So Cal's plane. He's going with 5 cell packs. The
wattage you said is about right. I think 900 would be really well actually
but was asking here for backup, as it's only going to be 4.25 lbs give or
take. Do you think he would need more than 200 watts per pound for
Intermediate and Advanced? Heck, my 14XL's (Well, 14XL now, RIP) barely give
me that.

Thanks Don!

Chris 

  _____  

From: "atwooddon at aol.com" <atwooddon at aol.com>
To: nsrca-discussion at lists.nsrca.org
Sent: Tue, January 12, 2010 9:30:21 PM
Subject: Re: [NSRCA-discussion] E motor choice

Probably needs 900-1100 watt range.  As far as Dualsky is concerned, the
XM4250CA or XM4260CA size motors would probably work.  These motors will
handle 11x6 to 15x8 props depending on battery cell count.  How much prop
clearance will he have?  What pack config, 4S, 5S, 6S?

I am not familiar with Hacker or Scorpion in this size motor tho I hear
Scorpion motors have a great reputation.  There is a guy on RC Groups flying
the Helios 63e plane with a Scorpion 4020-12  on the equivalent of a 5S Lipo
and says it has way more power than he needs.  So, a 4S might be about
right.

"I'm new to electrics so I need some advice. I'm running a Scorpion 4020-12
with
an Airboss 80 Elite ESC, APC 15x8e prop, on a Helios 63e (60 sized) pattern
ship
with 6S1P A123 batteries. The 4020-12 has way more power than I need on this
airplane."

In a message dated 1/12/2010 8:39:31 P.M. Pacific Standard Time,
homeremodeling2003 at yahoo.com writes:

I have a friend here in D7 that bought a Hyperion Helios F3A 63e at the AMA
show. He called me asking what motor to use. He is thinking Hacker,
Scorpion, and Dualsky. Any suggestions for him? It is supposed to weigh 4.25
lbs all up. I have some suggestions but thought I'd ask here for some more. 

Thanks!

Chris 

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