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 Post subject: My 500 YZR screamer project
PostPosted: Sun Jul 06, 2014 12:08 pm 
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Joined: Thu Aug 09, 2007 2:32 pm
Posts: 66
Location: France
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.
Attachment:
DSCF1893m.jpg
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Attachment:
DSCF1899 m.jpg
DSCF1899 m.jpg [ 243.97 KiB | Viewed 6595 times ]


After the first main jet change
https://www.youtube.com/watch?v=J609D3Q ... e=youtu.be

The dry clutch
https://www.youtube.com/watch?v=IAhXON3POZU

And the most importantly, my friends with whom everything is possible


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 Post subject: Re: My 500 YZR screamer project
PostPosted: Sun Jul 06, 2014 12:23 pm 
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Joined: Sat Oct 24, 2009 5:11 am
Posts: 278
Location: Modena (ITALY)
screamer means that you've change sequences of sparks every 90° ?

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 Post subject: Re: My 500 YZR screamer project
PostPosted: Sun Jul 06, 2014 12:38 pm 
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Joined: Thu Aug 09, 2007 2:32 pm
Posts: 66
Location: France
Yes I have with 2 tz 250 flywheel (one on each crank).
Attachment:
DSCF1617'.jpg
DSCF1617'.jpg [ 240.02 KiB | Viewed 6587 times ]

Hope to see at the French RDLC meeting next year


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 Post subject: Re: My 500 YZR screamer project
PostPosted: Sun Jul 06, 2014 12:50 pm 
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Joined: Sat Oct 24, 2009 5:11 am
Posts: 278
Location: Modena (ITALY)
wow !!!

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

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 Post subject: Re: My 500 YZR screamer project
PostPosted: Sun Jul 06, 2014 1:16 pm 
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Joined: Thu Aug 09, 2007 2:32 pm
Posts: 66
Location: France
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.


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 Post subject: Re: My 500 YZR screamer project
PostPosted: Sun Jul 06, 2014 2:07 pm 
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Joined: Sat Oct 24, 2009 5:11 am
Posts: 278
Location: Modena (ITALY)
Thank you very much

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

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 Post subject: Re: My 500 YZR screamer project
PostPosted: Sun Jul 06, 2014 2:41 pm 
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Joined: Sat Apr 01, 2006 6:55 am
Posts: 652
Fucking hell!!!!!!!!!! :shock: :shock: :shock: :shock: :shock: :shock:

Sorry.

Amazing :cool:

Details and lots of pictures please...

Congratulations! :D :D :D


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 Post subject: Re: My 500 YZR screamer project
PostPosted: Sun Jul 06, 2014 2:58 pm 
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Joined: Thu Aug 09, 2007 2:32 pm
Posts: 66
Location: France
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.


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 Post subject: Re: My 500 YZR screamer project
PostPosted: Mon Jul 07, 2014 1:55 am 
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Joined: Wed Nov 16, 2005 7:40 pm
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Location: Newcastle upon Tyne, England
The ingenuity, determination and creativity on this forum never ceases to amaze me. Congratulations. C'est magnifiique! :-D


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 Post subject: Re: My 500 YZR screamer project
PostPosted: Mon Jul 07, 2014 7:52 am 
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Joined: Thu Jan 30, 2014 8:31 pm
Posts: 29
Awesome, the sound is amazing.
We definitely need some onboard videos, though :D


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 Post subject: Re: My 500 YZR screamer project
PostPosted: Thu Jul 10, 2014 3:58 am 
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Joined: Thu Aug 09, 2007 2:32 pm
Posts: 66
Location: France
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.


Attachments:
File comment: Swing finished
bras fini m.jpg
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File comment: Modification of the swing arm for the WP absorber
bras ap ouverture m.jpg
bras ap ouverture m.jpg [ 204.52 KiB | Viewed 6401 times ]
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 Post subject: Re: My 500 YZR screamer project
PostPosted: Thu Jul 10, 2014 4:01 am 
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Joined: Thu Aug 09, 2007 2:32 pm
Posts: 66
Location: France
TZ ingnition support for the 500 RDLC engine.


Attachments:
PC190874m.jpg
PC190874m.jpg [ 197.7 KiB | Viewed 6401 times ]
PC120892m.jpg
PC120892m.jpg [ 237.16 KiB | Viewed 6401 times ]
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 Post subject: Re: My 500 YZR screamer project
PostPosted: Sat Jul 12, 2014 8:07 am 
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Joined: Sun Dec 22, 2013 6:40 am
Posts: 34
Very nice work! Does the taper on the standard rd500 lower crankshaft fit the taper on the tz4dp flywheel?


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 Post subject: Re: My 500 YZR screamer project
PostPosted: Mon Jul 14, 2014 6:31 am 
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Joined: Thu Aug 09, 2007 2:32 pm
Posts: 66
Location: France
For thé cracks, I have uses 2 front one but unfortunatly you have to machined it to fit thé TZ flywheel.


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 Post subject: Re: My 500 YZR screamer project
PostPosted: Tue Jul 15, 2014 10:10 am 
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Joined: Sat Oct 24, 2009 5:11 am
Posts: 278
Location: Modena (ITALY)
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 ?

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Last edited by Ax-Racing on Tue Jul 15, 2014 4:32 pm, edited 1 time in total.

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