Install the chain, square up the engine and tighten the four engine nuts and bolts. We removed the rear portion of the chain guard to make installing and aligning the chain easier. Note: The Harbor Freight engine we used has a billet rod, Honda aluminum flywheel, flat top piston, 14cc cylinder head, 265M cam, chromoly pushrods, 18lb valve springs, 92 main jet, bored carburetor and a high grade bolt kit. Put the adapter plate in place with the 8 bolts.
The adapter plate also provides front/rear and side to side adjust-ability making the engine swap much easier. You can drill four holes to mount the motor on without the adapter plate, however the plate is very flimsy without the support from the adapter plate. Here is the motor plate with the four 5/16" holes drilled. Line up the adapter plate and drill the four holes per the adapter plate instructions. Remove this spacer the stock engine was sitting on. Remove the four bolt from beneath the motor plate. Remove the black portion of the chain guard. Unscrew the wire stop and pull the cable out. We start our engine swap by removing the stock throttle cable. Now the handling is much smoother especially when going over bumps. This problem was addressed by installing a spacer. This causes some undesirable slop in the steering. There is a good size gap between the neck of the frame and the top cross plate on the forks. The first area of concern is the front forks. We've opted to install a 6.5hp clone motor on this Doodlebug. Installing our jackshaft unit brings the 2.8hp motor alive and makes the Doodlebug fun to ride.
The stock gearing makes the 2.8hp motor very sluggish and weak. We'll take out the stock motor and replace it with a 6.5hp Harbor Freight clone motor. Since the stock 97cc engine does not have the power to pull us up a slight uphill grade we will start with an engine swap. High/Advanced mode ~ 13mph (with stock gear ratio)We are taking a stock Doodlebug mini bike and modifying it in steps.10% more efficient than original 16eDrive.20% more power and than original 16eDrive.16” Composite Wheels with Pneumatic tires.Frame: Aluminum TIG Welded and Heat Treatment.Perfect for 5-7yr old rippers under 75lbs, with 18-24” inseam As they continue to develop skills, the medium speed of the HARLEY-DAVIDSON BRUSHLESS IRONE16 ™ allows for an exceptional amount of fun outdoors, getting thousands of hours of hand-eye coordination, balance, and outdoor exercise. Start them with a speed similar to what they can push the non-powered version at, and they learn the use of the twist throttle, and a long coast turn into a constant use of throttle and giggles. Graduate them to the powered mode (the holy grail of fun) as they show proficient use and understanding of the brake and the ability to coast and brake while standing. Your child can learn to push, balance, and coast in the Non-powered mode. Your child should have an inseam of 18” or more to adequately touch the ground with a slight bend in the knees for optimum sizing. The HARLEY-DAVIDSON BRUSHLESS IRONE16 ™ is the perfect choice for little rippers with some experience on a balance bike and are a little taller and/or more familiar with riding STACYC Stability Cycles and need a larger platform. Please contact us for international requests. ***Currently only shipping to US locations. **Run-time is entirely dependent on terrain, hills, and skill level. Industrial Grade, Lithium-ion Battery and Charger* Thermal protection for motor and controller.12” Composite Wheels with Pneumatic tires.Perfect for 3-5yr old rippers under 75lbs, with 14-20” inseam As they continue to develop skills, the medium speed of the HARLEY-DAVIDSON IRONE12 ™ allows for an exceptional amount of fun outdoors, getting thousands of hours of hand-eye coordination, balance, and outdoor exercise. Your child should have an inseam of 14” or more to adequately touch the ground with a slight bend in the knees for optimum sizing. The HARLEY-DAVIDSON IRONE12 ™is the perfect choice for little rippers with little or no experience on a balance bike.
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