BP12 and BP21 BL motors in Oz?

[boltor]

After reading http://www.rcgroups.com/forums/showthread.php?t=460315 I am keen to try a BP12 or BP21 (or equivalent other brands) in my GWS Corsair (with 3S lipo). I understand that the BP12 is a 2410-12 and the BP21 is a 2408-21, or possibly I am completely wrong...

Has anyone found these locally in Australia, or do we need to order from o'seas?
Are there equivalent motors that people are buying in Australia?

thanks.

[ravencsr]

Purchased my sets from Aero-nuts.com
http://www.aero-nuts.com/product_info.php?cPath=42_43&products_id=241&osCsid=593573b52642a65c247a879f7abea650

$40 US for motor, props and ESC....delivered.

Postage time was quite quick. I haven't been able to find an oz dealer who could match.

Raven

[boltor]

Purchased my sets from Aero-nuts.com
http://www.aero-nuts.com/product_info.php?cPath=42_43&products_id=241&osCsid=593573b52642a65c247a879f7abea650

$40 US for motor, props and ESC....delivered.

Postage time was quite quick. I haven't been able to find an oz dealer who could match.

Raven

thanks very much raven - looks a good deal. What sort of aircraft are you using the 2408-21 in? Happy with the performance (for the price anyway)?

[ExtremeSkyes]

Hey boltor...I have two bp21s from aero-nuts. For the price, it's a great little motor. I had it running my F18 and F14 at one stage. It was great with the F18 which it ran for a long time. The F14 was a fair bit heavier so it was a little underpowerd but still flew nice. Both these planes are from the Jetset44 100% plans.

My F14 is now running 2xCDR motors and the F18 has adopted the ultrafly F16 stock motor.

Anyway, it's not that expensive so wouldn't hurt to try it for yourself.

Ex.

[bobert13581]

I bought a bp09 from pldaniels (who is in queensland, not overseas)
cost around AU $60 with esc. which is comparable with your US$40

edit: ya spelt the name wrong

[ravencsr]

Boltor,

Very happy with the output compared with the price. Using them in a depron cub, Jetset F15 and will try the gws warbirds next. Handy to have lying around to throw into something.

[pldaniels]

bobert,

rcdaniels? That's not me is it? (http://nqrc.com) ?

Incidently, I do have a -09 left, along with a few controllers... if anyone is interested. Also got some larger motors too.

[boltor]

For US$45 (approx AU$60) looks like I can get:

1 X Aero-nuts BLC-30A (30 AMP ESC)
1 X BM2408-21T (same as BP21)
3 X EP8040 props
1 Pair T-Plug
3 Pair 3.5mm connector
Free shipping to Australia

See http://www.aero-nuts.com/product_info.php?cPath=42_43&products_id=278.

thanks for the advice Raven. Most appreciated.

[barb wire]

hi,
for you Aero-Nuts shoppers who bought this esc and have been faced with the choices to make when you are programming it i have a few questions :

1. timing mode : which of 3,8,15,30 deg are you choosing for
your BM2410-12 ?
same question if you bought their Hacker clone A20-20L Kv=1022 ?
the only clue i have found is in the online Phoenix-25 manual.
where it says that outrunner motors are to run at the higher advance
setting (12 to 35 deg)

2. PWM ? 8 , 16 or 32 KHZ ... which one is best for either of
the motors mentioned above ?
is there a general rule about inrunner vs outrunner and the PWM they operate best at ?


since the BLC-30A bench tested OK with my Himax 2015-4100 that is the plane it is flying with for now. using aero-nauts 3x1100 10C pack it hauls
my 15 oz profile around very well. nothing like a brand new battery pack to breathe some new life into a plane with over 200 flites on it.
oh, on programming the BLC-30A i chose the 3 deg timing advance setting for this motor & 8khz for PWM.

one comment about the BLC-30A esc is that it lacks a soft-start feature. and the turn-on characteristic is rather sudden . i expect this could strip the bull gear of the himax gearbox should i ever switch from the lighter orange
EP 9x7 prop to a heavier APC-E one.

bw

[Extreme_RC]

Boltor, look for the "for Sale" thread in this forum, Jun is selling off a whole lot of motors that are being held by a local friend of his in Melbourne. I am using the 2409-18 with an APC 9060 prop and its pulling 14 amps static (suggested prop is 8060 but I dont like suggestions :D) With the 8060 it pulled 11.7 amps static.

I also picked up 2408-21 (AUD$14.00!!) which has an alloy stick mount already fitted, all you do is slide your motor off the stick, slide this one on and two screws and your away! I chose this motor as the specs are good for little warbirds where you want smaller prop and higher prop speed. I planned to use this motor on a GWS corsair with an APC 8050E which should pull about 12 amps for 600g thrust on 3s.

While you are at it, get yourself a 15A and a 30A TowerPro ESC from him, for $45.00 the two its a great investment. I am using three of the 30A ones currently, two in an A10 and all my radio problems are gone.

[Extreme_RC]

1. timing mode : which of 3,8,15,30 deg are you choosing for
your BM2410-12 ?
same question if you bought their Hacker clone A20-20L Kv=1022 ?
the only clue i have found is in the online Phoenix-25 manual.
where it says that outrunner motors are to run at the higher advance
setting (12 to 35 deg)


Barb, the timing basically relates to motor pole, outrunners usually have many poles, 12-14 magnets arranged in NSNSNS is the key. A 12 magnet NSNS motor is 12 pole. Depending on the Kv of the motor you may get NNSSNNSS which means a 12 magnet motor would be 6 pole. I think you will find the timing for any outrunner will be the lowest deg of advance, 3 or 8.

As for the frequency of operation, I havent looked into this much, as you are up in the Khz already, I would try the fastest and see how you go, if you get radio glitches or motor cutouts, reset and try again. I am sure someone in here knows better about the frequency of operation and its effect on ESC performance.

[Smokin' Beaver]

I just ran my BP2108 on the Aero-nuts 30A ESC as it came out of the box. no probs at all.
Phil

[GOK]

I have three BP21s and 1 BP12 all running on 3s lipos and 8x6HD GWS props. one on GWS Mustang, one on GWS Estarter one on Jetset44 F15. I am very very happy with the price vs performance.

You can get the motors with 18 or 30 amp towerpro esc. shipped form AU ebay for a little less than AU$50. Just do a search in AU ebay on brushless.

Good luck,

GOK

[glydr]

G'day Gok... what type of ESC do you use with the BP21?

glydr

[GOK]

Hey Graham,

Happy Easter,

I use towerpro 18 amp esc. that I got as a package from ebay. It cost me AU$43 or $47 including shipping. It takes about 2-5 working days for items to reach me. I think the store was worldhobby.

Now and than I also use 30 amp towerpro esc. which is about AU$24 approximately.

Cheers,

GOK

[bidlynd]

If you need more prop suggestions for the 2409-18 here are some below, taken from the www.himodel.com website. I have purchased one but have yet to do some practical testing.

Recommended Applications:
a. 2 cell Lipo: GWS 10*47SF 5300RPM 7.2V 9.7A Thrust 510 gram ( Air pressure 76mmHg/25 centigrade)

Suit for small 3D airplanes with fly weight around 350 gram. using 1000mAh 10C liPoly and 12A Electric speed controller.

b. 3 cell lipo: 10x5 APC-E prop; 7200RPM 10V 12.7A Thrust 718 gram ( Air pressure 76mmHg/25 centigrade)

Suit for sports airplanes and scale airplanes with fly weight between 500-800 gram, using 1300mAh 10C Lipo and 15A-18A electric speed controller ( ESC ).

c. 4 cell Lipo: 8x4 APC-E prop; 11600RPM; 14V 14.8A; thrust 883 gram ( Air pressure 76mmHg/25 centigrade)

Suit for small F3A ( 10-15 class) airplanes. Recommend to use with 1300mAh 12C or 1600mAh 10C above li-poly battery and 18A above ESC.