Hey all, been a member for awhile but not made any posts. I am 41 and love old minibikes.
The wife and I enjoy going to Little Sahara, OK to ride wheelers. A couple of years ago they quit letting people ride double in the campgrounds unless the vehicle was made for it. So I decided to build a double person minibike and solve that problem.
I started with an old Monkey Ward 525, quite the deluxe model in it's day. I cut the frame and lengthened it 14". The original footpeg mountings will be for the rear passenger, and the bar in front will be the driver foot mount. The original Tecumseh was in very poor shape, so I built up a 5hp briggs instead. It has a ported block, higher compression, small performance cam, billet rod, custom intake and round slide carburetor without a governer. Still going to run the jackshaft with larger sprockets and larger chain. I reinforced the frame in key areas, and adapted a set of older Honda Z50 front forks to work on the front end. It has bearings and a spacer collar so it can be tightened up nicely and move freely. I am building a set of forks from raw steel and using the later style XR50 springs to hold the extra weight.
And I notice that a lot of people have a hard time finding a gas tank. The original tank was junk, so I am building one from a mid sized fire extinguisher. This one is 16 gauge (.055) metal and very easy to work with and weld. I cut the one end off, used the fill cap and tube from an E-bay user of Coyotegear (?) and welded it in place with a tailpipe adapter of 2"-1&1/2". Just a little more work to do and it will be ready for paint. I dont have a ton of fancy equipment, just some time and patience. Hope you enjoy and I will try to keep photos coming. Thanks, Bubba
The wife and I enjoy going to Little Sahara, OK to ride wheelers. A couple of years ago they quit letting people ride double in the campgrounds unless the vehicle was made for it. So I decided to build a double person minibike and solve that problem.
I started with an old Monkey Ward 525, quite the deluxe model in it's day. I cut the frame and lengthened it 14". The original footpeg mountings will be for the rear passenger, and the bar in front will be the driver foot mount. The original Tecumseh was in very poor shape, so I built up a 5hp briggs instead. It has a ported block, higher compression, small performance cam, billet rod, custom intake and round slide carburetor without a governer. Still going to run the jackshaft with larger sprockets and larger chain. I reinforced the frame in key areas, and adapted a set of older Honda Z50 front forks to work on the front end. It has bearings and a spacer collar so it can be tightened up nicely and move freely. I am building a set of forks from raw steel and using the later style XR50 springs to hold the extra weight.
And I notice that a lot of people have a hard time finding a gas tank. The original tank was junk, so I am building one from a mid sized fire extinguisher. This one is 16 gauge (.055) metal and very easy to work with and weld. I cut the one end off, used the fill cap and tube from an E-bay user of Coyotegear (?) and welded it in place with a tailpipe adapter of 2"-1&1/2". Just a little more work to do and it will be ready for paint. I dont have a ton of fancy equipment, just some time and patience. Hope you enjoy and I will try to keep photos coming. Thanks, Bubba
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