Need some ideas on how to mount this engine

[birdmannn101]

I picked up this 49cc 2 stroke off a mini chopper. It comes with it's own metal engine mount. I am just trying to figure out how to attach the mount to the bike. Here is a picture of what I am trying to do. Any suggestions will be appreciated...Dan

 

[MotorBicycleRacing]

I picked up this 49cc 2 stroke off a mini chopper. It comes with it's own metal engine mount. I am just trying to figure out how to attach the mount to the bike. Here is a picture of what I am trying to do. Any suggestions will be appreciated...Dan

Use a 4 stroke engine mount like this.
http://www.bicycle-engines.com/V-Frame-Mounting-Plate-Kit.html

What kind of gearbox are you going to use with that motor?

 

[birdmannn101]

Thanks for the link on the V frame mounting plate. I don't see how it would connect to the bars or any size for it's length.

The gearbox is included in the engine. One gear with centrifugal clutch. Capable of bringing a mini chopper with smaller wheels to 40 MPH. This engine comes with pull start, centrifugal clutch and electric start. http://elescooterparts.com/parts/gas/GS-12/GS-12Engine/49_5Engine.html I traded another 200cc Longshen engine straight across for it.

 

[MotorBicycleRacing]

Thanks for the link on the V frame mounting plate. I don't see how it would connect to the bars or any size for it's length.

The gearbox is included in the engine. One gear with centrifugal clutch. Capable of bringing a mini chopper with smaller wheels to 40 MPH. This engine comes with pull start, centrifugal clutch and electric start. http://elescooterparts.com/parts/gas/GS-12/GS-12Engine/49_5Engine.html I traded another 200cc Longshen engine straight across for it.

Those mounting plates come in all the 50 cc 4 stroke kits and work on the
cruiser style of frame which has a 1 1/2" dia front down tube.

That 5 to 1 ratio gearbox reverses the direction of rotation for the engine so
your CCW engine would be rotating clockwise.

 

[loquin]

Also, if your motor has the starter/generator on it, it's going to be VERY wide, frame-mounted... Gonna leave you bow-legged!

Because of their width, these motors are typically found in rack mounts.

 

[birdmannn101]

Also, if your motor has the starter/generator on it, it's going to be VERY wide, frame-mounted... Gonna leave you bow-legged!

Because of their width, these motors are typically found in rack mounts.

Thanks Lou,

Your right about the width. It is 8 1/2" wide



and that is why I wanted to see how this mounting plate



with no dimensions on length or a side view to show how it attaches to the bars would work with this engine mount.



When you say rack mounts are you talking about mounting the engine on something like a rear mount?



If so, could you recommend one that would hold up to the strain of the chain pull and engine vibrations?

Dan

 

[birdmannn101]

That 5 to 1 ratio gearbox reverses the direction of rotation for the engine so
your CCW engine would be rotating clockwise.

When I pull the starter it rotates counterclockwise. Maybe I didn't catch what you meant in the quote MotorBicycleRacing.

Dan

 

[MotorBicycleRacing]

When I pull the starter it rotates counterclockwise. Maybe I didn't catch what you meant in the quote MotorBicycleRacing.

Dan

You must be looking at it from the other side.

If you are looking at that gearbox from the sprocket side and rotate the
bell CCW as the engine would turn it the gear will rotate CW.

That 5 to 1 gearbox reverses the direction of rotation.

PS: I have one of those gearboxes and the scooterguy used them to
drive the bike gears on the RIGHT side of the bike.

 

[birdmannn101]

Well, I guess I should be looking at a Lou's idea of a rack mounted engine. That way I could mount the engine dependent on the CW or CCW rotation? The guy I bought the engine off of kept the mini chopper so I asked him which side the chain was on and he said the left side. But heck, he is the one that took the engine apart and broke the rings while was cleaning it. Now, don't that beat all? Gave me the engine in a box.

 

[MotorBicycleRacing]

Something like this would work for your setup.