Understanding Gear Ratios: Different gear ratios change how the power is applied to the air. As the letter gets further away from "A" (more and more gear reduction) the RPM and pitch speed is reduced and the static thrust (and usually prop diameter) is increased. In other words the prop shaft will turn slower but with more torque so it can handle larger props. If the pitch speed does not exceed the stall speed you can't pull the model fast enough to make it fly. You usually want pitch speed to be at least 2-2.5 X stall speed for slow fliers, trainers and 3D models. Sport aerobatic models 2.5-3X stall speed, pattern airplanes at least 3X stall speed. If your experimenting be sure to get a range of props for the motor. In many instances one prop will make the model feel poor while another prop might exceed your expectations. Nobody can predict what will work best for you so get what you think will work and a couple nearby props so your not missing out on better performance. Look in props section for simple math to calculate pitch speed if prop pitch and RPM are known.
All of these power systems use the same motor at different gear ratios. GWS says not to load them over about 6 amps. However, I've had good luck loading them to near 8 amps. They come with a sleeker gearbox than the 370DX series and a different lower KV S-300 motor. The quality is high in these powerful motors. They perform best on 7 or 8 720 NiMh or RRC 2x1800 Polymer packs. Remember, the higher the ratio the greater the static thrust at a lower speed. Choose wisely. By purchasing a few different props you'll be able to make adjustments to static, inflight thrust and pitch speed of your power system and come up with the best combination of performance for your bird.
These power systems have the most efficiant speed 300 motors you can get. All of them use the same motor at different gear ratios. GWS says not to load them over about 6 amps. However, I've had good luck loading them to near 8 amps. For this you'll have to do your own experimenting. The quality is high in these powerful motors. They perform best on 7 or 8 720 NiMh or RRC 2x1800 Polymer packs. Remember, the higher the ratio the greater the static thrust at a lower speed. Choose wisely. By purchasing a few different props you'll be able to make adjustments to static, inflight thrust and pitch speed of your power system and come up with the best combination of performance for your bird.
Fox Lite Alloy Flange Combo Mount, Gearbox Frame & Heat Sink
Tired of breaking your standard plastic GWS motor frames? Motor overheating? New! An excellent alloy flange mount. Combination motor mount / gearbox frame / and heat sink. Works with EPS 300 and 350 GWS systems. Unit has two nice flanges, perfect for gluing or screwing to a profile fuse/foamy or similar surfaces. 100% compatible with GWS EPS300 and EPS-350 gearbox parts. Motor installs and removes easily with clamping action/fastener. The motor assembly is not included. Check out ("Electric Flight Accessories/Motors/Gear Drive for Black Diamond 301 motor combo assembly)
Black Diamond 301 Motor/Mount/Heat Sink/Gearbox 3.75:1 TILL IT'S GONE
Ok, here is a special on the last of the BD301 motor systems I have. We used these to make the first ever 3D foamy, the Radical Edge 540. Oh those were the days! Anyway here they are at a bargain. This is the exact setup we sold with that kit. Was $38.
Worlds Highest power to weight ratio Speed 300 motor/mount/heat sink/gearbox combo which is suggested in the Edge 540 kit. Suggested pack is 8-720 NiMH, Prop 8-6 GWS, you'll be around 11 oz static thrust at 8 amps, 6.5 in the air, 36mph pitch speed all at front of charge. High power system gives you ultimate power to weight ratio. Assembly weight without prop is 67g/2.4oz. Fox XL anodized aluminium combination motor mount/gearbox frame/heat sink (look in "Electric Flight Accessories/Motor Mounts & Heat Sinks"). Note: Prop is for illustration only.
Motor asm. only without heat sink motor mount available below.
Black Diamond 301 Motor/Mount/Heat Sink/Gearbox 5.33:1 TILL IT'S GONE!
Our killer Radical Edge 540 motor system in a higher gear reduction for 8-6 / 9-4.7 on 3S. Was $38.
Worlds Highest power to weight ratio Speed 300 motor/mount/heat sink/gearbox combo which is suggested in the Vertigo Kit. Suggested pack is 10-720 NiMH or 3S 1200 HD Lipo, Prop 8-6 or 9-4.7 GWS, you'll be around 16 oz static thrust at 8 amps, 35mph pitch speed all at front of charge. High power system gives you ultimate power to weight ratio. Assembly weight without prop is 67g/2.4oz. Fox XL anodized aluminium combination motor mount/gearbox frame/heat sink (look in "Electric Flight Accessories/Motor Mounts & Heat Sinks"). Note: Prop is for illustration only.
Motor asm. only without heat sink motor mount available below.
MM1 Motor Kit for Li'l Hornet (12oz and under park flyers)
Builds into a neat little power house. Same motor kit that comes with the Lil Hornet Aerobatic park flyer. About 25 watts of potential power. You build the kit, only medium CA is needed to complete gearbox. Comes with prop. Extra props are available and the GWS 8-4.7 is also a good option. Run on 7 or 8 NiMH cells. Draws about 4 amps on 7 cells (2 lipo's). Photo is of completed kit after you assemble it.
All of these power systems use the same motor at different gear ratios. GWS says not to load them over about 12 amps. These are 7.2 S-400 motors. Although GWS normally reccomends these for 2S or 7-8 Nimh Nicad cells. They work well at 3S (or 10 round cells) if you keep the amps to 12 or less. they are best utilized at 8-12 amps range. No prop amp load chart is available for these.
SKU Number: GWEPS-400A Thru I
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We cover all the basics on charging and cycling, and the receivers that we provide. PLEASE READ THIS PRIOR to sending any items back. 99% of all returned items test perfect. Learn how to check your cycler/charger or receiver here without spending money on postage.
Pictured to left is one of Garrett's competition ships, to right .... Dave, Here is a picture of my second plane. This is a 3W Extra 330 40%. The plane is flying great. Thanks so much for all your support in this hobby. I really like using your products. My friends as well are very happy with the equipment & fast-friendly service that is coming out of your company. Let's keep in touch. -Garrett Morrison
 "GWS EPS 350 Power System")
 "GWS EPS DX 370 Power System")
 "Fox Lite Alloy Flange Combo Mount, Gearbox Frame & Heat Sink")
 "Dymond Modelsport Max 480 with Gearbox")
 "Black Diamond 301 Motor/Mount/Heat Sink/Gearbox 3.75:1 TILL IT'S GONE")
 "Black Diamond 301 Motor/Mount/Heat Sink/Gearbox 5.33:1 TILL IT'S GONE!")
') "MM1 Motor Kit for Li'l Hornet (12oz and under park flyers)")
 "GWS EPS 400 Power System")
