Mike Bontoft built a disk valve Zenoah several years ago, before we had a dyno. It ran very well. Recently we tested an M&D cast cylinder engine. Even piston ported it has more power than any 26cc engine except the Quickdraws. Mike thought it would be the perfect cylinder for a disk valve.

http://www.modelgasboats.com/media/kunena/attachments/legacy/images/2709_P1010037_JPG916ed75eaf14ff34db3b48c647988e90
http://www.modelgasboats.com/media/kunena/attachments/legacy/images/2711_zendisc2_jpg596e34e6b3ce5c1109b5a80b5085f456

Disc valve is cool and I would not say no to an M&D cast cyl. As for making a cyl myself, I probably will in the future but right now I have enough untested things to tune, New engine, hull, gearbox, dual props. I wish i had someone to do the proto testing for me . Engines, aren't they mostly for show anyway.

I think we have a lot to look forward to! Excellent work!

Your killing me

Hi patriktegelberg, i have just started to build a tethered hydroplane and thought this could be a good mod. Then run it on Nitro Glo fuel. I was just going to turn the top of the dead off and then experiment. With this kind of engine in this racing we need 20K+ rpm max power for a duration of only one minute. Is it possible to sort out the pictures and e-mail them to me?

Regards Terry.

This thread is 4 YEARS OLD ......

Scott, yes i know it's 4 years old. I have only just become a member and going back over the threads i came across this one. But all the links and photo's will not open, they appear as error. I was hoping Patriktegelberg was still in touch so he would contact me or if there are any archives here where i can get what i am after. Better late than never as we English say.

Regards Terry.

Sadly NOT seen or heard from Patrick in @ 4 years tho seen some stuff on the European boards.
As for pictures, MANY were lost in a malicious hacker attack a few years ago and when site was reformatted few images were transferred back from before the hack.
* If needing/wanting missing images from older threads and you see member as active still, PM them asking for an image reload within thread your viewing.
** Or ... start a NEW THREAD and simply ask for the information/pictures you seek and the membership here will do there best in linking/posting or sharing whats available on said subject.

Regards,
Scott