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mackey
07-29-2005, 03:08 PM
I have a plans built foamy that weighs 20 oz. with geared speed 400 and 8 cell NiMh battery. I want to convert to brushless and I am looking for suggestions as to what motor and battery to use. Also, what weight will I save by converting over?
:confused:
Bill
aeromackey@hotmail.com

Reformed Nitroaddict
07-29-2005, 03:17 PM
Kind of depends on what type of foamy it is. Do you want an outrunner brushless motor or a geared version?

I have seen several 20-25oz planes fly just fantastic on the Himax 2025-4200 running 5:1 gearing on a 11x7 prop. Using a 1900-2100mah 3cell lipo pack, Run times are in the 12-15min range with power exceeding 200watts.

mackey
07-29-2005, 08:08 PM
I think I would prefer the simplicity of an outrunner. Your thoughts..........

Bill

Reformed Nitroaddict
07-29-2005, 08:39 PM
That would be just fine - there are plenty of outrunners, literally hundreds to choose from. Just keep the general rule of thumb down - 75w per pound for good performance, 100w per pound for great performance, 150w per pound for outragous 3D.

That being said, what are you wanting to do with the plane?

Here are some choices that I have seen work well in other planes:

AXI 2112/20
http://www.hobby-lobby.com/brushless-axi2212.htm
Should produce about 150W with the right prop. So figure 120w per pound - great performance.

AXI 2808/20
http://www.hobby-lobby.com/brushless-axi2808.htm
Should put out about 170W, but at 20A, so becareful which pack you use.

Himax 2812-1080
http://www.maxxprod.com/pdf/HC2812-xxxx.pdf
Should put out about 135W at only 12A. This might be your best bet, but won't produce unlimited vertical performance.

Himax 2816-1220
http://www.maxxprod.com/pdf/HC2816-xxxx.pdf
This motor will exceed 220W at 24amps. Full 3D and more. Might be overkill, but one bad boy.

JFGrn
07-30-2005, 02:20 AM
I have a plans built foamy that weighs 20 oz. with geared speed 400 and 8 cell NiMh battery. I want to convert to brushless and I am looking for suggestions as to what motor and battery to use. Also, what weight will I save by converting over?
:confused:
Bill
aeromackey@hotmail.com

Well, if the plans call for it to weigh in at 20oz. with a 8 cell Nimh, and a S400
geared. It sounds like you could shave alittle weight with a outrunner, maybe
18.5 AUW with a Hacker a20-20L. Also if you went to Lipoly's you should be
able to lose even more weight. Which in the long run would translate into an even better flyer.

John

TaSaJaRa
08-06-2005, 02:13 AM
I use a JustGoFly (http://justgofly.com/tech400DF_DD.htm) 400DF
on a foam plane that weighs in at around 26oz.
It was my first scratch build and I put a little to much epoxy on it. :rolleyes: But it does have very good power.

I bought my setup from JustGoFly (http://justgofly.com/Order%20Form.htm)

Setup: 400DF 3000Kv $49.95
GWS 400 GB 3.9:1 $10.00
GWS 12x8 HD prop $ 2.00
JGF 2200mAh 3 cell $43.95
JGF ESC 22amp $49.95

Don't look for any fancy flying in the videos, I have only been flying 8 months.:D

Short video showing how well this setup does with a Citabria Hand Take Off (http://static.rcgroups.com/gallery/data/500/46301Citabria_Hand_Take_off.wmv)

Same motor on a ZagNuts wing running DD 5.5 x 2.5 RTF 27oz Short Video (http://static.rcgroups.com/gallery/data/500/46301ZagNutz.wmv)

A 3D Katana 20oz with a JGF 400F geared 3:1 11x7 prop Katana Video (http://static.rcgroups.com/gallery/data/500/46301Katana_Flight.wmv)


My motor and GearBox on the Citabria only weigh about 2.2 oz and the battery around 4.7oz where you are looking at around 6.9oz

I use JustGoFly motors on all my planes. I know there are many other motors to choose from but most all of them are over $50 to get the same performance.

WWI Ace
08-09-2005, 12:54 AM
I just got a Ultrafly B/06/10 outrunner and I love it!! It is probably the quietest outrunner I own!! You might check the specs on it and see if your interested. I got mine from Tower Hobbies.

ericthetree
08-16-2005, 08:30 PM
I still don't know enough about motors to know what to put on this plane,wt. with no electronics is 2 1/2lbs.

MikeysRC
06-16-2009, 02:20 AM
test

BobbyDog
06-26-2009, 08:24 AM
I've been running the Himax 2816 for a couple years now and its still going strong. I've actually got it on my AP plane which weighs in at 27.1 Oz's and it has no problem pulling that around. For a battery I would go with a 1200mah lipo for sure. They are getting so cheap now its crazy not to use them. Youll probably save at least 2 ounces by switching over. You wont believe how much better your plane with fly at 18oz's than it does at 20. I have a couple planes that I use both 1200mah lipos and 2200mah lipos in, and with the light 1200's in the plane the performance is ten-fold better than the 2200. At least thats my experience, but I'm heavy into the 3D at the moment so... Anyway, good luck!

Bob