Rat Bike Project

[facthunter]

There's a few Bikes Made with Rotec Radials in them. I gave a Good Lycoming Cylinder to Peter Franks at Lethbridge. Nev

[nomadpete]

1 minute ago, willedoo said:

You're right there Nev, that one above with the Wright cylinder is a custom chopper in my view. It's that shiny, you'd need sunglasses to look t it..

I just love the concept.

 

Can you imaging kick starting that?

 

Would it sound like the one lungers at the vintage stationary engine fair?

[willedoo]

I get the impression the engine runs but is not practical to ride around on. I think he just takes it to shows and starts it up. I don't think it has a balance shaft. He shortened the stroke from 5.5 inches down to 5 inches and used a shorter Continental piston. He had to cut the bottom skirt off the cylinder so it would clear the crank lobes. The one that was built (in Norway I think) using a single pot from a radial was around 2000cc and he could ride it down the road ok.

 

 

[willedoo]

The original Wright piston was a long piston and needed that section of bore that protudes into the original radial crankcase, and that setup would have needed a much taller custom crankcase making the engine too tall, so that's why he  trimmed the bore and shortened the stroke with the Continental O-470 piston.

[willedoo]

I found a video on the 2 litre thumper. It wasn't in Norway, it was a German, Fritz Langer, who built it.