Bob27 Posted October 3, 2020 Share Posted October 3, 2020 So, I am currently in the process of modifying a paramotor engine(radne racket 120). I'm trying all the fancy stuff like ceramic coatings, porting and polishing, shaving all the unnecessary weight, and more. Has anyone had any experience with this? I probably should have started this thread before I started modifying my engine... Quote Link to comment Share on other sites More sharing options...
Ganbatte Posted October 3, 2020 Share Posted October 3, 2020 Interested to hear your results. FWIW, were I doing a project like that, I'd be scouring motorcycle resources on the principle they'd have experience/knowledge in this area. Quote Link to comment Share on other sites More sharing options...
Bob27 Posted October 3, 2020 Author Share Posted October 3, 2020 I have done a lot of that type of research in the past. This isn't the first 2 stroke I have ported, I think it is my 4th or 5th and so far I have had nothing but good results. So I am no beginner, but I do have a lot to learn. I actually just barely got the engine back together and I have been running it without the prop. It is interesting the results I am seeing already. It sounds different which is typically when you open up the exhaust port. It is also way more responsive to throttle input and I think it would rev to the moon if I didn't stop it. I do have a buddy that can thrust test the engine so it will be interesting to see how much it changes. Quote Link to comment Share on other sites More sharing options...
Bob27 Posted November 1, 2020 Author Share Posted November 1, 2020 (edited) I finally got to thrust test the modified paramotor engine the other day. We were able to hit a peak of ~85 pounds thrust at almost 5000' elevation. This means at sea level it could get a little over 120 pounds thrust. On the other hand one of the stock engines typically run around 75 pounds of thrust at our elevation or a little under 110 at sea level. I think the next modification I will try is a custom tuned pipe. I'm hoping with a new pipe I can get ~15 pounds more thrust. Edited November 1, 2020 by Bob27 Quote Link to comment Share on other sites More sharing options...
AndyB Posted November 1, 2020 Share Posted November 1, 2020 Have you joined the Paramotor Homemade page on FB? All these things are being done and discussed there. Quote Link to comment Share on other sites More sharing options...
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