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Old Oct 13, 2002, 09:08 PM
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Richmond, VA
Joined Apr 2002
993 Posts
What motor now in my Radical Edge 540

Well, It finally happened. I was flying my Radical Edge 540 and the motor locked up on me. Landed safely and yep the brushes are worn out. I have a Graupner speed 300 motor laying around and I'm wondering if I should replace it with this motor or maybe brushless. The Mega might be a little too heavy for it though.

I had the GWS 300-C with the A drive (3.75) reduction. It flew great but from what I've read the B or C drive and a bigger prop might be better. What do we think? Has anyone made a change from the stock setup?

Grant
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Old Oct 14, 2002, 10:26 AM
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Wayne, NJ
Joined Apr 2001
473 Posts
I've been flying my VRC Katana with a modified (removed all the plastic except the mounting face and bearing support, mounts with 3 screws through the face and allows thrust adjustment)GWS 6.6/1 S300 short drive with a 10 or 11x8 (weighs the same as the Black Diamond setup). The Katana's almost two ounces heavier than my RRC Edge 540. It'll hang on 8 cells and pull out vertical on 10. When I fry the motor in the Edge I'm planning on using one of these.

Mike
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Old Oct 14, 2002, 02:21 PM
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Richmond, VA
Joined Apr 2002
993 Posts
Does anyone know where you can get the GWS gears? I'm looking for the 5.33 or 6.6

thanks
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Old Oct 14, 2002, 02:37 PM
PUGZ RULE!
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Joined Jun 2002
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If your speedo can handle it.....

try a 280bb.
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Old Oct 14, 2002, 05:58 PM
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Richmond, VA
Joined Apr 2002
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What will a 280bb do for me that a GWS 300 won't. Remember I'm using 720 NiMh for go juice.

Grant
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Old Oct 15, 2002, 12:36 AM
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toledo, oh, usa
Joined Nov 1999
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Im using (well, used once so far) an orion elite mod motor, geared 4.8:1 on 3 kokam 1020's.

Havent weighed it yet but I imagine its 9 oz or less (my stock was 10.2 oz). Im still waiting for my orbit to get back from germany for repair so I havent had a chance to fly it yet on a charged pack but for the 5 minutes I flew it after making the pack the performance was amazing! I only landed after 5 min b/c I didnt want to drain the pack down to far knowing I wasnt going to be able to charge it back up for a while, not becuase it was losing power (it still had positive thrust!!!)

BTW you can use the stock RRC gearbox, an ikarus piccolo tail gear as the main, and a HPI 10 t pinion and its basically a drop in replacement!

Scott
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Old Oct 15, 2002, 04:53 AM
PUGZ RULE!
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Joined Jun 2002
557 Posts
280bb vs 300

the 280bb is a hotter motor. SB flyers have found out that the 280bb is a nice upgrade over the GWS300.

excerpt from HL web site:
SI2001 Power Speed 300 Motor 6V ... $ 16.00
Rpm/v: 5554, resistance: 292mohms from our not quite trustworthy measurements. 24.2mm diameter: 0.2mm larger diameter than 280. Good with 4.5:1 or 5:1 gears, 8x6 slowflyer prop. With 8x6 prop it draws 8 Amps and gives 5600 prop rpm with 5:1 gearbox.

SI2010 Acro Speed 280BB Motor 6V ... $ 39.80
Ballbearings, external brush connections. More power than SI2001. rpm/v: 4000, resistance: 340mohms from our not quite trustworthy measurements. Good with 4.5:1 or 5:1 gears, 9x6 slowflyer prop. With 9x6 prop is draws 8.5 Amps and gives 5500 prop rpm with 5:1 gearbox.

A motor from tower sells for only $ 19.99.

Great Planes S-280 7.2-8.4V Ferrite Motor BB

the acro and the GP are both sagami's.

I have the GP and beat the GWS300 on a DD application hands down.

Rgds, JT
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Old Oct 15, 2002, 08:36 AM
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Wayne, NJ
Joined Apr 2001
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GWS 5.33 and 6.6 are available from Aero Micro or BP ($18, motor and drive).

Isn't the 280 BB quite a bit heavier than the S300?

Mike
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Last edited by Mikerjf; Oct 15, 2002 at 08:39 AM.
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Old Oct 15, 2002, 03:25 PM
Balsa Flies Better!
Stamford, CT
Joined Oct 2000
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It's hard to beat a can 300...

Grant

Dave Thacker ran through lots of motors when he picked that setup for that airplane. A speed 280BB will outlast a 300 and will deliver more watts, but only when you go to more cells, thus the weight becomes problematic. Essentially, Hobby Lobby's ad is wrong.

For an upgrade there are brushless alternatives such as the mini something or other- lots of posts on brushless upgrades for the switchback that have gone from 300s to brushless- but you won't beat a 300 with much less. Maybe the new Astro 010 geared with lower winds would do it as well.

Sam
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Old Oct 15, 2002, 07:16 PM
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Richmond, VA
Joined Apr 2002
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Quote:
Originally posted by Mikerjf
GWS 5.33 and 6.6 are available from Aero Micro or BP ($18, motor and drive).

Isn't the 280 BB quite a bit heavier than the S300?

Mike
Mike,

I'm looking for the gear only not the gearbox. I might get a Mini brushless and would like to try different ratios.

Grant
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Old Oct 15, 2002, 07:21 PM
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Richmond, VA
Joined Apr 2002
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Re: 280bb vs 300

Quote:
Originally posted by juantrinidad
the 280bb is a hotter motor. SB flyers have found out that the 280bb is a nice upgrade over the GWS300.

excerpt from HL web site:
SI2001 Power Speed 300 Motor 6V ... $ 16.00
Rpm/v: 5554, resistance: 292mohms from our not quite trustworthy measurements. 24.2mm diameter: 0.2mm larger diameter than 280. Good with 4.5:1 or 5:1 gears, 8x6 slowflyer prop. With 8x6 prop it draws 8 Amps and gives 5600 prop rpm with 5:1 gearbox.

SI2010 Acro Speed 280BB Motor 6V ... $ 39.80
Ballbearings, external brush connections. More power than SI2001. rpm/v: 4000, resistance: 340mohms from our not quite trustworthy measurements. Good with 4.5:1 or 5:1 gears, 9x6 slowflyer prop. With 9x6 prop is draws 8.5 Amps and gives 5500 prop rpm with 5:1 gearbox.

Rgds, JT
Juan,

The 280 bb has a kv of 1500 less than the speed 300 and turns the same rpm using the same gearbox and with a bigger prop???? How can this be? Doesn't make sense to me.

I thought someone would recommend the Mini brushless motors from Hobby-Lobby.

Grant
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Old Oct 15, 2002, 07:29 PM
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Richmond, VA
Joined Apr 2002
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Sam,

I replied to Juan and Mike before I read your post. I have read several of the switchback posts on upgrades but the Mega is definitely out since it weighs so much more and would make it nose heavy. The Mini from H-L did catch my eye and I'm considering that.

The stock motor is a great setup and this is my most fun plane. My only complaint is the flimsy fuselage. Mine came a little warped and I believe that is why I cannot knife edge the plane, at least not yet.

Removing the motor might be difficult cutting of the CA or I just don't know the trick yet. I'm trying to eliminate that with a brushless. A brushless would require a different reduction gear, that's why I inquired where this could be purchased by itself.

thanks,
Grant
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Old Oct 15, 2002, 08:13 PM
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toledo, oh, usa
Joined Nov 1999
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I looked at all avenues of motor options for this plane back in winter/spring. You want to keep it LIGHT. The orion, in my opinion is the BEST option you can get b/c its ligther than the stock motor, can use the SAME EXACT GEAR BOX (which is a heavy weight penality with most BL) and it can use SMALL LIGHT (pixie) brushed esc's.

Once I have a chance to use it on a fully charged 3 cell 1020 kokam Ill know more but this is definetely one option you dont want to forget about!

Scott
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Old Oct 15, 2002, 09:47 PM
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Richmond, VA
Joined Apr 2002
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"BTW you can use the stock RRC gearbox, an ikarus piccolo tail gear as the main, and a HPI 10 t pinion and its basically a drop in replacement"

Scott,

Do you mean the stock gear and not gearbox? The gearbox is disassembled and only the gear is used. I don't have the plastic parts, I threw them away. What is an ikarus piccolo tail gear? And if it is the main what do you need the stock gearbox for? Who makes the HPI?
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Old Oct 15, 2002, 10:43 PM
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toledo, oh, usa
Joined Nov 1999
1,403 Posts
What I mean by the stock 'RRC Gearbox' is what is stock for the edge and blackdiamond motor as RRC uses (the disassembled GWS drive). I didnt want to use the stock gws gears b/c I wanted a pinion that used a setscrew instead of pushon.

The orion elite mod is a coreless motor. Its as powerful and nearly as efficient as a BL motor! Lots of us started using them a while ago in piccolos and since then they have moved over to other areas. The motor was originally meant for the HPI RS4 micro car racer and uses HPI pinions (at most LHS's). The Ikarus tail gear is the right size and pitch to match the HPI pinion and fit on the standard RRC edge gearbox.....see the pics!

All I can say was for the 5 minutes I flew it, it was VERY impressive. AND those 5 minutes were off whatever charge teh li-polys came with from the factory as my orbit is still in the shop and I havent charged them yet.

All in all I will have MORE POWER, WAY LONGER FLIGHT TIMES, and WEIGH LESS (sub 9 oz!)!!

Scott
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