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 Post subject: Re: My RD 500 is soon home
PostPosted: Tue May 19, 2015 3:48 pm 
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Joined: Wed Nov 17, 2010 6:44 pm
Posts: 247
Location: Sweden - Stockholm
cidair wrote:
Still OEM needles.... :???:


Ok
That will have an effect. The org needles are to rich in the midrange (4-5k rew).
When you open up thr intakeside it will be even more noticable.

I changed the needles just to be sure when I went for UNI-filters on the elephantears.
No stumble in the midrange but at low rews/ low throttleopening it was not fun to ride in traffic.
That made me rejett the carbs by input from here.

I discovered that at idle the bike was wery rich at tickover (was trying to balance the carbs) and my plugs went wet.
That´s why I changed the pilot air jet to 1,4 size to lean the mixture at idle.
That affected the next circuit so I had to go bigger on the pilot jets. Had org size 22,5 (or 25) and changed up to 27,5 but still wasn't enough.
Had to put in 30 size and then it worked fine.

The mains has been untouched.

As is now I can abrupt open the throttle at almost tickover and the bike will pull without any hesitation all the way to redline and more.

Good luck with your rejetting // Jeppe


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 Post subject: Re: My RD 500 is soon home
PostPosted: Sun Sep 10, 2017 6:40 am 
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Joined: Sat Mar 09, 2013 5:28 pm
Posts: 105
Location: Sweden
Long time since last post.
Still working on to get the 5k-7k to work properly. It just stumbles when I open the throttle. Have Jolly pipes and open air filters.
Changed to #1.4 pilot air jet, #30 pilot jet. Have #210 main jets.
Now it also hesitates when I open up the throttle fully at around 8.5-9k.... :smt010

_________________
RD 500 1GE -87
RD 350A -73
TZR125RR 4DL -91
MT-07 -15
R1M -15


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 Post subject: Re: My RD 500 is soon home
PostPosted: Sun Sep 10, 2017 6:43 am 
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Joined: Sat Mar 09, 2013 5:28 pm
Posts: 105
Location: Sweden
I have #250 in the garage. Maybe try these? I'm getting more and more confused about this, the more effort I try to put in to solve the problem......

_________________
RD 500 1GE -87
RD 350A -73
TZR125RR 4DL -91
MT-07 -15
R1M -15


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 Post subject: Re: My RD 500 is soon home
PostPosted: Sun Sep 10, 2017 11:37 am 
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Joined: Sat Mar 09, 2013 5:28 pm
Posts: 105
Location: Sweden
#250 main jets mounted. Much much better response. Just that last 5% missing.
Will check the position of the needles now.

_________________
RD 500 1GE -87
RD 350A -73
TZR125RR 4DL -91
MT-07 -15
R1M -15


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 Post subject: Re: My RD 500 is soon home
PostPosted: Mon Sep 11, 2017 9:02 am 
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Joined: Sat Mar 09, 2013 5:28 pm
Posts: 105
Location: Sweden
#250 doesn´t seem to be enough. Will try #300 as next step.

_________________
RD 500 1GE -87
RD 350A -73
TZR125RR 4DL -91
MT-07 -15
R1M -15


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