RZ/RD 350 & Misc. 2-Stroke Tech BBS

it s different motor and fires every rotation using cams and injection

dificult to see, but front and rear valves open at the same time ?
when are the 4 strokes suppost to happen when the valves open each revolution ?

Yes first the induction side and then the exhaust side on a four stroke ------This is a double lobe cam and open one behind the other at 30 deg apart for all in one rotation

https://www.facebook.com/photo.php?fbid ... =3&theater
https://www.facebook.com/photo.php?fbid ... =3&theater
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New ---Microsquirt-ECU----With lots of Corvette sensors and stuff so we will see if this does the trick -Fingers crossed and yes i am getting tired of this to

What 4-stroke engine are you using?

When will you be testing the new design?

Sounds like you've turned a 4-stroke into a 2-stroke.

Not sure I understand, but I like it!!

The Donor Motor was a CBR250R which keeps it the FIM range for the Class
It has alot of other different links and hopefully next two wks the new ECU will give it a try -fingers crossed

https://www.ebay.ca/itm/RZ-350-Yamaha-R ... uU&vxp=mtr
One of the 3 Race Frames i made and to be honest the best of the 3 in my mind
Thanks for looking

Well both machine have made it home to Northern ireland and hopefully the Moto 3 will be ready for next season
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https://www.youtube.com/watch?v=eahmaJd ... e=youtu.be

Finally got the bike back and after some issues bought an oscillascope and found the problems and this is the first test run of the 3 stroke motor in action ----You can hear at idol the double pulze of the Motor

https://www.youtube.com/watch?v=i5hLgxTH9-8
Well Finally after all this time the motor runs to 12,000 and after a tidy up will be heading to the track
Will post a completed Video sometime soon
Thank yous all for watching this thread and its been testy but i got there and hopefully a whole new direction for motors
Still got my big RZ400 and that needs fuel injection done to lol
Again thnnkyou

https://www.youtube.com/watch?v=i5hLgxTH9-8

Video is private. Can't watch it.

Thank you just fixed the setting and hopefully works ok now

Sounds great, Cant wait to see a video of it on the track...

Video works now.

Engine sounds wicked!!

Not like any thumper I've ever heard.

To be honest, it doesn't sound like a powerful engine.
It doesn't pick up revs very dynamically.
More like a lame duck that stalls immediately when not on the throttle.

Are there any performance curves available, i.e. is there any gain compared to the same engine being a normal 4 stroke?