400F Type "A" Outrunner Brushless Motor

Mile High RC's Outrunner Brushless Motor's

Dollar for Dollar Absolutely the Most Power for the Buck.

400F Type A outrunner

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This motor is a thrust machine intended for speed 400 gear drives. Drawing 12-15 Amps. It can also run as direct drive (with small props) taking advantage of the 2150Kv speed. Runs on 2-3 cell lipo packs. On a 3 cell it will turn a 6 x 3 prop at 20,000 rpm. This motor performs great geared in a GWS speed 400 gear box. 3:1 or 3.9:1 seem to be the best ratio for this one. That allows it to be great fit for any stick mount application. Provides over 30 oz. of thrust with the correct gear prop combo (see data below). Direct drive with 5" to 6" props for fast jet or wing (see videos)..

This motor is comparable to other 400F models on the market. But un-like the other brands this is a type A motor, meaning the shaft is easily reversible and/or replaceable. So when the landing is not so great and you break or bend a shaft you do not need to replace the bell for $10-$15. Simply replace the shaft for $3.00 instead. Recently reworked the shaft now has very close tolerances eliminating vibration, Magnets are good to 180 degrees, High speed bearings supporting the shaft on both ends. And very rare in the industry, and required by Mile High RC for all the 500 and smaller size  motors we carry, the stator is double bonded limiting stator movement on nose in landings/crashes. All leading to better efficiency and increased power.

Motor comes with 2.3mm shaft, an X mount, Bullet connectors (not installed) and screws. Fits in to any GWS type speed 400 gear box. And has fit every 400 size aluminum outrunner type mount I have tried so far. Mounting holes are 16mm (or roughly 5/8 in.)

Various mounting Photos Here    Photos flipping the shaft here

Full 2 oz. Lighter then a geared 400 brushed motor.

.When geared it's a full 1 oz. Lighter then a geared 400 brushed motor.

400FA : Geared or Direct Drive

2150kv ~ 15 Apms (22 peak) ~ 26 Turns

KV: 2150    Weight: 1.5oz (43g)    Diameter: 26mm    Length: 24mm    Shaft: 2.3mm or 3.0mm

Direct Drive Stats (obtained at 4900 feet)

Geared 3:1 Stats (obtained at 4900 feet)

Geared 3.9:1 Stats (obtained at 4900 feet)

Tech Notes: Data will be re-worked when back in stock. An all out awesome up grade for any park flyer. This motor is nicely rated at 15 amps. The data on this motor looks good. But the motor flies better then the numbers show (just my opinion). Direct drive 5" or 6" prop on a wing provides excellent speed and great vertical. Personally flown on the XE2 and speed wing 400 it is a perfect match. Geared 3:1 with 9x7.5 to 11x7 prop provides abundant torque and adequate speed. Numerous magpie owners have reported a perfect match. It's flown on any thing from a flat foam plane to 3lb custom photo bird.

Want to have some fun with your park flyer? Try this motor geared 3:1 and a 9x7.5 prop, pop in a small 4 cell. Just make sure you have a carbon spar in their it's pretty fast. The new craze seems to be this motor on a easy star and a 3-cell lipo.. Total screamer!!

Recommended set up 11 x 4.7 apc prop with 3:1 gear box on 3-cell. 6x4 direct drive on 3-cell