Calvin Franks Three Wheeler ???

[Psychotrike9]

Reading this poast made me think. I was talking to mu uncle today and he used to race motorcycles a long time ago. He told me befor they had waterpumpers to move the water that people had the idea that the tempature of the water would make it circulate. Do you guys have any idea what im talking about? And also is this what they tryed on these trikes?

[Twilight]

Thats what my FL350r has. The heat of the water circulated the water in head and passes it thru the radiator. My FL350 has never gone over 300 degrees and thats after hours upon hours of riding... most people think its setup wrong... but well.. ive gone for 5 hour rides and its still cool =)

[OZQUAD44]

As the coolant gets hot, the hot water rises to the highest part of the system, out the top of the head and into the top of the radiator. Once the water is in the radiator it get a chance to cool down, so this relatively cool water falls to the bottom of the radiator, where it can then enter the motor again through a inlet pipe near the bottom of the barrel. This whole process causes the water to flow around the engine, thus cooling the motor.

This system works fine in an engine that is designed for it and is better than air cooling. However, it requires a larger capacity radiator, does not regulate temperature as accuratly as a system with a pump fitted, and is not as efficient as a pump system. Its just older technology, thats not to say it doesn't work well. It has just been superseded by more modern/better systems.

[Bigbore]

Has anyone ever tried to make a air cooled motor liquid cooled like the franks? The perculating system? I have a spare 83 250r cylinder that I might...

DG did. It was a replacement head design. The head was water cooled sitting on a stock air cooled cylinder. Keeps the head +/- 70 degrees cooler than a DG readial head. The cylinder is still air cooled.
I just bought a complete system from a guy here for $200. They're not easy to find but they're out there.

[Black86tri-z]

any thing new pics of it?

[Bigbore]

Up on the shelf. I'm tring to get other projects done that were started before I got the Frank's.

[Tecate250]

Any new updates with this? I am curious to see close up pis of the engine and rad system.

[Bigbore]

I'm still doing a lot of stuff in the shop right now. I'll try and get it down off of the shelf and get you guys some good pic's.

[tri-Z ripper]

very interesting any updates?

[NOS_350X]

What are you doing with the quad?

[Orangecnty250r]

What are you doing with the quad?

I would love a Franks to finish off the "rare" part of the collection....I have been working on the Cagiva all week and its getting me in the mood for a Franks to arrive at my door. Bigbore has the most varied rare colllection I know of ..Tiger, Nicholson, Cagiva, and Franks......this is to you and here is another one if you sell me one of your Franks

[Bigbore]

I would love a Franks to finish off the "rare" part of the collection....I have been working on the Cagiva all week and its getting me in the mood for a Franks to arrive at my door. Bigbore has the most varied rare colllection I know of ..Tiger, Nickolson, Cagiva, and Franks......this is to you and here is another one if you sell me one of your Franks

Mine might be varied, but not the best collection

The Franks Quad will be for sale in the next few months.

[Orangecnty250r]

Now thats a Teaser with a capital T

[the tecate kid]

Hey Hey O.C! I called dibs on the quad months ago! l.o.l.

[Orangecnty250r]

No dibs in love, war, or a Franks