Custom Build – 20-inch Astro Hooligan

DaVinci Drives has really made a name for itself a few years ago by developing high performance electric bikes that used the high-end Astro Flight RC motors. The distinctive feature of his drives were the chunks of billet aluminum that were cut into beautiful and well-designed brackets, which mounted these motors to various bicycle frames.

The company had calculated out a lot of variables and optional configurations during the first year he was developing hot rod RC drives for E-bikes. The high-end Astro motors they used has the ability to run at very high RPMs, and to access the extra power that is waiting there, you have to use quite a bit of reduction to get the RPMs back down at the wheel speed.

Something that DaVinci did on a monster yellow trike was to use a smaller 20-inch driven wheel, which simplified several aspects of the design process, concerning the amount of reduction needed. Since they like to stick with things that have proven to work well for DaVinci, the following bikes also use a 20-inch driven wheel.

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Custom Build – 50-MPH Monster Yellow Trike

The motors DaVinci used in this creation are the Astro Flight 3220 designed for high-end RC models. It is 92% efficient, weighs only 5 pounds, and can put out up to 15-HP each (11,000-Watts).

At low speeds, the yellow trike below is as efficient as almost any commercially available electric bike. This trike has dual astro 3220’s and will go zero to forty in 4.5 seconds!. This particular trike weighs only 90-lbs, and was converted to a very quiet all-belt drive for the motor, instead of chain. It has whopping-huge 44V / 30-Ah battery pack made from Hobby-King LiPos that if you milk it gently, you could get a 35 mile range on this Trike.

The base frame we started with was originally a KMX Typhoon, and then we heavily modified it to his design. The frame was widened 5 inches, lengthened 3 inches, and lowered 3/4 inch. It will use 203mm Hope 4-piston hydraulic brakes…”

DaVinci chose 16-inch wheels with 39mm wide rims for the fronts, and a 20-inch wheel with a 47mm wide rim for the rear, and for tires he used Massis Hookworms. The rear tire is 1.95-inches wide.

Matt of DaVinci ended up selling this customTrike for $7500 with a single motor (instead of dual like the build below). If you are interested in building your own monster trike or bike, we sell small production drive units and motor systems and can be reached at matt@electricbike.com. Fully built, ready to roll custom systems are available. Matt built the drive system for the FFR electric trike (now re-named Outrider-USA), a ready to roll solution that is very similar to the trike trike featured in the photo.

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RC Electric Bike – Astro3220

Preview of Matt Schumaker (DaVinci Drives) RC ebike:

Bike: Specialiced S-works (1998)
Motor: Astro flight 3220
BEC: Dimension Engineering VHVBEC
Servo tester: Astro Flight Servo Tester
Battery pack: 12S2P Turnigy Lipo 20ah 50V (With balancers and charger from Jozztek)
Drive system: DaVinci (Matt Shumaker)
ECS: Castle Creations HV160 (rev 2)
Battery case: Toppeak MTX TrunkBag EX
Monitoring: Cycle Analyst
Thruttle: Magura throttle

Setup was done following this guide: viewtopic.php?f=28&t=12196


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