500 Two-Stroke Tech

Hello, I know there are no pictures of the progres of my bike, but I am very pleased to show you the result before painting.
This bike was built between several projects. It took 10 years but what a joy to have finally running.
His first trip was made on the circuit of Nevers Magny Cours during the meeting organized by the French 500 rdlc club.
I hope that you will appreciate and with time (lot of), I will place some additional photos. After the first main jet change
https://www.youtube.com/watch?v=J609D3Q ... e=youtu.be" onclick="window.open(this.href);return false;

The dry clutch
https://www.youtube.com/watch?v=IAhXON3POZU" onclick="window.open(this.href);return false;

And the most importantly, my friends with whom everything is possible
https://vimeo.com/100021660" onclick="window.open(this.href);return false;

screamer means that you've change sequences of sparks every 90° ?

Yes I have with 2 tz 250 flywheel (one on each crank). Hope to see at the French RDLC meeting next year

wow !!!

how about vibration ?
did you have balancer shaft installed or kept away ?

I still running slowly the engine so I can't give you all the informations. But Thanks for your wow.
For the vibrations, as I kept away the balacer shaft, there are some vibrations. I don't know why but only during the deceleration (aroud 7 000 rpm).
I'll give you more information after the next setting ( main jet, curve ignition setting, air boxes, ... ) because I still have a lot of details to finish the project.

Thank you very much

i'm elucubrating similar project from some month
what ignition hardware have you installed ?

Fucking hell!!!!!!!!!!

Sorry.

Amazing

Details and lots of pictures please...

Congratulations!

For now I run with cdi units from 250 tz 4 DP40. Next week, I'll get two fully programmable units form DEVMOTO.
I'll let my impressions in a few weeks because I'm going on holiday with my childrens.

The ingenuity, determination and creativity on this forum never ceases to amaze me. Congratulations. C'est magnifiique!

Awesome, the sound is amazing.
We definitely need some onboard videos, though

For the onboard video, I'll probably done one in October.

For the information and details :

Frame and swing from Aprilia 250 rs with some modifions for the shock absorbers from WP.

TZ ingnition support for the 500 RDLC engine.

Very nice work! Does the taper on the standard rd500 lower crankshaft fit the taper on the tz4dp flywheel?


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For thé cracks, I have uses 2 front one but unfortunatly you have to machined it to fit thé TZ flywheel.

In wich way have you changed phases between the two crancks ?
you can not obtain a 90° rotation with a 31 tooth gear.....did you build a new gears ?