5 cylinder Radial Engine

[rdean]

Gas tank day.
Started with an aluminum tube and cleaned up the outside and the inside on the lathe. I cut a recess 0.200 deep in each end for the plexiglass to fit in.
I covered a piece of plexiglass on both sides with masking tape and marked around the outside of the tube. Rough cut on the scroll saw outside the line.


I pressed the plexiglass between a shaft in the chuck and a short shaft in the live tool post.


This shows the parts of the gas tank before assembly.


And all assembled.


Next will be some mounting brackets for the tank.

Thanks for looking
Ray

 

[rdean]

Made up the mounting brackets for the gas tank. After I had it installed I wondered if it is big enough. Will just have to see how it works out and not a big job if I need to make a bigger one.


Thanks for looking
Ray

 

[Firstram]

That looks great! How did you seal the acrylic end caps?

 

[rdean]

I used two part clear epoxy.

My parts came in so on to the intake runners.

I thought I had ordered Tygon gas line for the runners but that isn't what I got. (my mistake)
This tubing won't hold up for very long but maybe long enough to see if the engine will run.



I have reordered the Tygon line and some proper clamps for future use.


And I added a throttle.



Test run is coming up soon.

Thanks for looking
Ray

 

[rwm]

What is the heat rating for Tygon?
Edit: I retract the question as it apparently cannot be answered>
Tygon is a brand name for a family of flexible polymer tubing consisting of a variety of materials to be used "across a range of specialized fluid transfer requirements".[1] The specific composition of each type is a trade secret. Some variants have multiple layers of different materials. Tygon is a registered trademark of Saint-Gobain Corporation. It is an invented word, owned and used by Saint-Gobain and originated in the late 1930s. Tygon products are produced in three countries, but sold throughout the world. Tygon tubing is used in many markets, including food and beverage, chemical processing, industrial, laboratory, medical, pharmaceutical, and semiconductor processing. There are many formulations of clear, flexible, Tygon tubing. The chemical resistance and physical properties vary among the different formulations, but the tubing generally is intended to be "so resistant to chemical attack that it will handle practically any chemical", whether liquid, gas, or slurry.[2] While largely non-reactive, Tygon has been reported to liberate carbon monoxide and is listed among carbon monoxide-releasing molecules.

 

[francist]

Man that is really looking sweet!

 

[rdean]

Thanks francist

Video of the first run of my radial engine.

The electric motor is used to spin the crank shaft for starting before the prop is installed.
The engine is actually running on 4 cylinders in the video as one cylinder has a exhaust valve problem that needs to be sorted out.

Thanks for looking
Ray

 

[Chris Hamel]

Awesome Ray

 

[f350ca]

Thats fantastic Ray !!!!!
Thanks for bringing us on the journey.

Greg

 

[francist]

What Greg said, fantastic work!

-frank