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Forum: Gas Engines

12-24-2007, 04:58 PM

Replies: 18

Roto 26 gasser

Views: 1,847

Posted By 103/17

RE: Roto 26 gasser

I agree a tech thread would be great. The issue is you never know who is posting and if its good info. Heres my experience with different intake systems. My least favorite is the Piston Port design....

Forum: Gas Engines

12-21-2007, 09:25 AM

Replies: 18

Roto 26 gasser

Views: 1,847

Posted By 103/17

RE: Roto 26 gasser

At 6000 RPM I am sure you would benefit from lower ports. RPM is not the important factor though, piston speed is. They are not always the same. When manufacturers design port timing specs its...

Forum: Gas Engines

12-18-2007, 08:08 PM

Replies: 18

Roto 26 gasser

Views: 1,847

Posted By 103/17

RE: Roto 26 gasser

Interesting. I spent many years in development with 2 stroke engines with a large OEM. Port timing is critical when designing a pipe or modifying a head. Its your foundation you are building on. 150...

Forum: Gas Engines

12-18-2007, 04:44 PM

Replies: 18

Roto 26 gasser

Views: 1,847

Posted By 103/17

RE: Roto 26 gasser

When you say exhaust ports are close to the same do you mean port timing or the dimension on the port outlet and screws? The other question is if you look at the OEM specs the Evo says 9000 RPM peak...

Forum: Gas Engines

12-18-2007, 04:09 PM

Replies: 18

Roto 26 gasser

Views: 1,847

Posted By 103/17

RE: Roto 26 gasser

When I used to run Pattern stuff back in the mid/late 80s I learned about prop unloading. Taping an old photo tach to the side of my fuse and painting the backside of one blade I took a flight around...

Forum: Gas Engines

12-18-2007, 02:43 PM

Replies: 18

Roto 26 gasser

Views: 1,847

Posted By 103/17

RE: Roto 26 gasser

WOW.. Is that 9000 rpm static on the ground? The listed peak on their website is 8000. Have you tried any other prop combinations? Hows the general "runability" of the engine. Starts easy, idles...

Forum: Gas Engines

12-18-2007, 12:58 PM

Replies: 18

Roto 26 gasser

Views: 1,847

Posted By 103/17

Roto 26 gasser

Has anyone had any experience or have any details on the Roto 26 ???? Info seems to be limited. I would like to know number of ports and the configuration. I am also looking for some feedback from...

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