Muscle Bike to MX Flat Track Bike

[roadwarrior]

So, between the WBO and BOTEN I have been working on a project to turn an old muscle bike into a MX bike. Actually it will mimic a old flat track racer. Starting with a 1969 Sears Spyder and changing out a few parts on it and giving it a tune up. Here is what I am starting with and the pair of Rhino triple tree forks that will be modified to work with the tire and wheel I'm using.

 

[LukeTheJoker]

Should be interesting! Only one week till BOTEN to get it finished!

Luke.

 

[roadwarrior]

Should be interesting! Only one week till BOTEN to get it finished!

Luke.

I'll be tweaking on this one during BOTEN. No rush on this... just a fun build. I like the paint on it so it'll be super easy.

 

[roadwarrior]

This is what I've done to it so far. I picked up a Messinger MX seat and a under seat sissy bar, a pair of alloy mountain bike handle bars and old school BMX grips. My next door neighbor works at a metal fab shop and I had him cut the forks and lengthen them 4 inches. He did this by adding stainless steel sleeves. He also lengthened the fork tube to fit the frame. I made the bracket for the seat. I still have to swap out the crank, chain ring and rear cog. I'm going with a 39-16. I also am making number plates for the front and sides out of a stock sheet of plastic. The front rim came off of the '75 Stingray Fastback I bought for MBBO 2014. The tire is a NOS Western Auto Supply Co. 20X1-1/4-1-3/8 along with a Pork Chop BMX new axle.

 

[Green Dragon]

I'm usually a purist who hates to see nice original Muscle Bikes as anything but stock - but I actually LIKE this, has the look down, for sure...
Will be watching.

 

[Corykip]

Great project, keep us posted.