RZ Frame modified MOTO3 project

Road racing, drag racing, motocross, vintage - anything racing related discuss it here!

Moderator: rztom

Message
Author
ulsterman
Posts: 71
Joined: Fri Mar 01, 2013 11:49 pm

Re: RZ Frame modified MOTO3 project

#136 Post by ulsterman » Wed Oct 10, 2018 8:16 pm

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

User avatar
JanBros
Posts: 197
Joined: Tue Jan 20, 2015 8:18 pm
Location: The Land of Francorchamps

Re: RZ Frame modified MOTO3 project

#137 Post by JanBros » Thu Oct 11, 2018 6:10 pm

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 ?
if it runs, you can race it !

ulsterman
Posts: 71
Joined: Fri Mar 01, 2013 11:49 pm

Re: RZ Frame modified MOTO3 project

#138 Post by ulsterman » Thu Oct 11, 2018 9:34 pm

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

ulsterman
Posts: 71
Joined: Fri Mar 01, 2013 11:49 pm

Re: RZ Frame modified MOTO3 project

#139 Post by ulsterman » Sun Dec 09, 2018 10:55 pm

https://www.facebook.com/photo.php?fbid ... =3&theater
https://www.facebook.com/photo.php?fbid ... =3&theater
()
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

User avatar
Smoker
Posts: 4778
Joined: Sun Mar 23, 2008 8:08 pm

Re: RZ Frame modified MOTO3 project

#140 Post by Smoker » Mon Dec 10, 2018 6:38 pm

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!! :smt023

ulsterman
Posts: 71
Joined: Fri Mar 01, 2013 11:49 pm

Re: RZ Frame modified MOTO3 project

#141 Post by ulsterman » Tue Dec 11, 2018 12:33 am

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

ulsterman
Posts: 71
Joined: Fri Mar 01, 2013 11:49 pm

Re: RZ Frame modified MOTO3 project

#142 Post by ulsterman » Sat Apr 20, 2019 1:55 pm

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

ulsterman
Posts: 71
Joined: Fri Mar 01, 2013 11:49 pm

Re: RZ Frame modified MOTO3 project

#143 Post by ulsterman » Fri Oct 04, 2019 6:04 pm

Well both machine have made it home to Northern ireland and hopefully the Moto 3 will be ready for next season
https://www.facebook.com/photo.php?fbid ... =3&theater

ulsterman
Posts: 71
Joined: Fri Mar 01, 2013 11:49 pm

Re: RZ Frame modified MOTO3 project

#144 Post by ulsterman » Tue Aug 25, 2020 6:51 pm

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

ulsterman
Posts: 71
Joined: Fri Mar 01, 2013 11:49 pm

Re: RZ Frame modified MOTO3 project

#145 Post by ulsterman » Wed Oct 07, 2020 6:23 am

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

User avatar
Smoker
Posts: 4778
Joined: Sun Mar 23, 2008 8:08 pm

Re: RZ Frame modified MOTO3 project

#146 Post by Smoker » Wed Oct 07, 2020 6:44 am

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

Video is private. Can't watch it.

ulsterman
Posts: 71
Joined: Fri Mar 01, 2013 11:49 pm

Re: RZ Frame modified MOTO3 project

#147 Post by ulsterman » Wed Oct 07, 2020 9:52 am

Thank you just fixed the setting and hopefully works ok now

tacky1
Posts: 950
Joined: Wed May 13, 2015 1:11 am
Location: Pacifica,,

Re: RZ Frame modified MOTO3 project

#148 Post by tacky1 » Wed Oct 07, 2020 1:04 pm

Sounds great, Cant wait to see a video of it on the track...
1985 RZv500
1984 RZ500 Hybrid
1986 RG500 Walter Wolf
1986 RG500 Skoal Bandit
1984 RZ350
1984 RZ350 Hybrid
1981 RD350LC
1981 RD350LC Hybrid
2009 CR500AF Supermoto 250X
2007 CR500AF 250X
1988 YSR50 (2)
1984 GPZ750 Turbo
1989 VFR750R RC30

User avatar
Smoker
Posts: 4778
Joined: Sun Mar 23, 2008 8:08 pm

Re: RZ Frame modified MOTO3 project

#149 Post by Smoker » Wed Oct 07, 2020 1:18 pm

Video works now.

Engine sounds wicked!! :smt038

Not like any thumper I've ever heard.

MK
Posts: 814
Joined: Sat Nov 26, 2005 11:44 am
Location: Wolfenbüttel, Germany
Contact:

Re: RZ Frame modified MOTO3 project

#150 Post by MK » Thu Oct 08, 2020 7:25 am

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?
Bye
Martin

Post Reply