101-741 Scout Frame Kit
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Here's one way of doing it.
Pretty cool, huh? But this was as far as it got before the engine was used for another bike and so on...
I probably won't get around to finishing this pretty unique project, so the frame and engine plates are looking for a new home.

The basic idea was to build a "101 lookalike" based on the relatively cheap and plentiful 741 engine and trans. The frame is of TIG welded construction, except for the cast steering head and rear axle mounts (new reproduction 101 castings). Engine plates are Duralumin, and take a stock 741 engine/trans (see note below on alternative gearboxes). Any number of front ends and wheels can be fitted to the frame. Right now it has adapters for HD 1" steering head bearings (Timken taper roller), but regular Scout bearings can also be fitted. Rear wheel can be 101, 741, Sport Scout - or any number of other wheels can be adapted. The frame is made for a stock 101 tank. I can supply new tanks, either for the stock 101 oiling system (total loss and hand pump), or for recirculating oiling as on the 741. Email for more info: info@indianpartseurope.com
 

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Here's another!
More traditional looking, but in some ways more radical technically.
This is a "sister bike" with the same frame (except for one bracing tube which can easily be added to the other frame), but with a Triumph 4-speed gearbox.

The engine plates need to be modified a little bit for this, but the Brit gearbox is surprisingly easy to fit to the engine plates (and to stock 741s - I did a small story about that here). It also has a belt drive, Japanese wheels, stock 101 forks and tank.
 

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Rolling chassis. 
Note twin front frame tubes (like a 101), and how the aluminum engine plates bridge the bottom of the open frame (like a real racer!). The plates would look dead cool with swirly engine turning. See also note about frame tube when you click the photo.
The bike in the first pic (and here to the left) has Bultaco forks in Ceriani trees with a custom 1" stem. Front wheel is Honda and rear is Suzuki. The rear wheel has adapters for the stock bearings to take a Scout axle + spacers to line it up with the frame. The front wheel is more or less the same. All of this is fairly easy to do if you have lathe, or know someone who can help. 

Front end, wheels, tank, saddle and fender are for illustration only. Only the frame with Timken bearing adapters and engine plates are for sale (ok, I may also be persuaded to part with the cool tapered and shaped stainless jockey shifter made specially for this bike!).
 

Email: info@indianpartseurope.com
 

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