500 Two-Stroke Tech

500cc GP-Replica Tech Forums

Search  FAQ  Register Login
It is currently Tue Oct 23, 2018 12:34 am

All times are UTC - 4 hours [ DST ]




Post new topic Reply to topic  [ 33 posts ]  Go to page Previous  1, 2, 3
Author Message
 Post subject: Re: RD500 1GE Restoration
PostPosted: Mon Jul 23, 2018 9:49 pm 
Offline
- - - - -
- - - - -

Joined: Thu Nov 17, 2005 7:12 am
Posts: 1383
Location: Leicestershire, UK
MK wrote:
I'll take a bet on around 10HP hiding in PV and ignition setting.
The original ignition starts to back off strongly between 9 and 10 k. Using higher advance here will raise power between 9 and 11.5 k.
The original PV setting is complete crap as it's fully open much too early. Tuned setups with pipes usually react positive on starting rpm of 7 - 7.5k and fully open rpm around 10.5. Don't know exactly how Kennys pipes will react, but that should be in the ballpark.

Just one word on the Ignitech on the RD500: I had 2 bikes in my own hands that had trouble and I know of a few others with the same issues. It seems to be EMV related as the tach and spark go bunkers in the midrange.
In one case it was solved by relocating the lower HT coil from the left to the right engine side.

All Zeeltronics worked fine on the RD500.


Thanks for the info and warning Martin - I'll let the dyno guy know - I wonder if a steel shield around the Ignitech would help - perhaps some of the wiring need shielding as well ?

Cheers
Paul


Top
 Profile  
Reply with quote  
 Post subject: Re: RD500 1GE Restoration
PostPosted: Tue Jul 24, 2018 4:30 pm 
Offline

Joined: Thu Mar 09, 2006 12:54 pm
Posts: 258
Location: Germany
My impression is more that the wiring is prone to work like an antenna to pick up disturbances and the internal filtering inside the Igni can't always cope with it.

Bringing the lower coil away from the pick-up wires helped, so the strategy should rather contain things like shielding the pick-up cable, bringing the Igni further away from the EMV polluted zone (inside fairing, under seat, ...).

Or simply buy a Zeeltronic.

_________________
Bye
Martin


Top
 Profile  
Reply with quote  
 Post subject: Re: RD500 1GE Restoration
PostPosted: Wed Jul 25, 2018 9:14 pm 
Offline
- - - - -
- - - - -

Joined: Thu Nov 17, 2005 7:12 am
Posts: 1383
Location: Leicestershire, UK
MK wrote:
My impression is more that the wiring is prone to work like an antenna to pick up disturbances and the internal filtering inside the Igni can't always cope with it.

Bringing the lower coil away from the pick-up wires helped, so the strategy should rather contain things like shielding the pick-up cable, bringing the Igni further away from the EMV polluted zone (inside fairing, under seat, ...).

Or simply buy a Zeeltronic.


Thanks Martin,

Cheers
Paul


Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 33 posts ]  Go to page Previous  1, 2, 3

All times are UTC - 4 hours [ DST ]


Who is online

Users browsing this forum: tacky1 and 4 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group