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[brian Rupnow]

Sparky--If you have the article, I would be happy to read it. I have done a lot of reading on the art of making rings this week, but I'm always happy...

[brian Rupnow]

Nickel--there are a lot of differing opinions on this. If you are using an aluminum piston with cast iron rings in a cast iron cylinder, then conventional...

[brian Rupnow]

Sid--From all I have read, an aluminum piston is better for a high speed engine because of less reciprocating mass, and consequently less forces on the...

[brian Rupnow]

Now we are going to try something a little different. The engine runs well as is, with a Viton o-ring on it, but I'm bored doing nothing, so now we are...

[brian Rupnow]

Today I made an "add on" for the gear cover. It's not so much a safety thing as a noise reducer. Yes, if you were careless enough to stick your...

[brian Rupnow]

I have to agree, we don't see as many posters as we used to. Sometimes I think I just post too much, to the point where people are tired of reading my...

[brian Rupnow]

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[brian Rupnow]

I have been asked about gaskets on this engine. There is a gasket 0.030" thick between the bottom of the cylinder and the crankcase. The head gasket...

[brian Rupnow]

Yes Willy, the change in cam timing greatly reduced any blowback thru the carburetor.---Brian

[brian Rupnow]

I reset the cam timing by retarding the action of the cam by about 4 to 5 degrees. That made a tremendous difference to the way the engine idled and responded...

[brian Rupnow]

This post has been temporarily removed until i get it figured out a bit more.--april 06-2021

[brian Rupnow]

I use Solidworks as my main and only design software. It is amazing---it's wonderful.--But be aware---It is horribly expensive. I paid over $6000 for...

[brian Rupnow]

Somehow I missed posting the throttle lever. Thought i had done that, but I don't see it here so I'll post it again.
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[brian Rupnow]

So, we're all finished up here. This is the final video. The engine runs very well and has been a very nice build. Good luck to all of you who have purchased...

[brian Rupnow]

And finally, the throttle link which runs from the throttle lever over to the carburetor.
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[brian Rupnow]

Here we have the throttle lever mounting bracket, which picks up two of the bolts used to hold the cylinder in place.
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[brian Rupnow]

Today I finished up my "Casey Jones" throttle and linkages. I don't have my Belleville washers yet, so I put a small neoprene o-ring in between...

[brian Rupnow]

I've decided that since I have the time, with no other engine builds planned, that I will machine a much swoopier throttle mounting bracket. Since this...

[brian Rupnow]

I am not a believer in vapour carburetors. I know that some people like them, but for me they don't really give enough control over the speed of the ...

[brian Rupnow]

This is my engine with what I call my "Casey Jones throttle lever" A couple of Belleville washers between the throttle arm and the throttle...