- #Baja motorsports mini bike kit how to#
- #Baja motorsports mini bike kit install#
- #Baja motorsports mini bike kit mod#
No longer available.) The race inspired tires allow the mini bike to take corners like a performance motorcycle. (Note: China stopped manufacturing these rims and our suppliers are all out. Our rim and tire package provides better handling and less weight for higher performance.
#Baja motorsports mini bike kit mod#
The next mod for our Doodlebug is a set of aluminum rims and racing tires. With this gear ratio the Doodlebug had great power coming off idle and the top speed is in the 40 to 45 mph range. We used a 12T clutch and the stock 72T rear sprocket. This is our custom header for mini bikes. The distance between the fuel cap and frame rail is close, however, removing the fuel cap and filling the tank does not take much effort.
#Baja motorsports mini bike kit how to#
See our "Throttle Linkage" page in the how to section for more ideas. This is not our preferred method of hooking up the throttle linkage. Note: The throttle linkage we used on this motor was a bit awkward. Hook up the throttle cable and throttle linkage. Note: We used a new connector on the end of the kill switch wire because the stock connector was too small. Now you can remove the kill switch from your engine. Attach the ground wire from the Doodlebugs kill switch where the ground wire from the engines kill switch was located. This required us to make a little bracket for the front mounting bolt and drilling a new hole for the rear mounting bolt.Ĭonnect the Doodlebugs kill switch to the coil wire on the 6.5hp engine. To avoid the annoying sound of the chain smacking the chain guard, we moved the chain guard upward. With the chain adjusted we noticed the chain was too close to the chain guard. The front portion of the chain guard does not fit the 6.5hp motor. The rear portion of the chain guard went back on. Note: We removed two links from the chain for a better fit.
Now slide the engine forward to take the slack out of the chain and tighten the four nuts on the bottom of the mounting plate.
#Baja motorsports mini bike kit install#
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. We are taking a stock Doodlebug mini bike and modifying it in steps.
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