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Post subject: 84 RZ350 - YPVS
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kenk What's an RZ? Joined: 11 Jun 2008 Total posts: 5 |
When I turn on the ignition, the exhaust valve used to just go through one cycle. Now when I turn it on, it does not shut off after the first cycle and the motor continues to make noise. Any ideas or suggestions?
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Posted: Wed Jun 11, 2008 11:07 pm
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Post subject: Re: 84 RZ350 - YPVS
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KX3 Mmm, Fully Synthetic! Joined: 02 Oct 2006 Total posts: 1188 Location: Québec |
| kenk wrote: |
| When I turn on the ignition, the exhaust valve used to just go through one cycle. Now when I turn it on, it does not shut off after the first cycle and the motor continues to make noise. Any ideas or suggestions? |
Does it continue forever?
The valve will cycle differently depending on when it was stopped...
It's supposed to end in the open position.
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Posted: Wed Jun 11, 2008 11:40 pm
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| xen-uno Joined: 27 Jul 2005 Total posts: 845 |
It's either a problem with the YPVS controller or the pot in the servo itself. 1st thing to do is to pull the cover off the cable pulley housing on the cylinder, disconnect the cables, then make sure the valves turn freely. If they do then it has to be the controller/servo.
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Posted: Thu Jun 12, 2008 2:24 am
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Post subject: 84 RZ350- YPVS
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| kenk What's an RZ? Joined: 11 Jun 2008 Total posts: 5 |
Yes, motor continues forever.
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Posted: Thu Jun 12, 2008 6:42 pm
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Bare All-gear Wheelie! Joined: 28 Jan 2006 Total posts: 1908 Location: Vancouver Canada |
Motor Cannot continue forever unless a gear is also stripped as the Cables on the pulley allow only so much rotation... then everything jams / stops.
Either way you are going to be need a replacement for your controller or servo.
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Posted: Thu Jun 12, 2008 7:11 pm
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Thrasherg Powerband Master Joined: 18 May 2007 Total posts: 721 Location: Austin, Texas |
If the motor turns forever, it sounds like you have stripped a tooth or two in the servo unit, that prevents the cables from making their full travel and the unit will never stop. Sounds like tou need a new servo unit, or a new set of gears for the servo unit.
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Posted: Fri Jun 13, 2008 1:36 am
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| kenk What's an RZ? Joined: 11 Jun 2008 Total posts: 5 |
thanks for your help.
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Posted: Tue Jun 17, 2008 3:04 pm
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TygerTung Daily Burner Joined: 21 Sep 2005 Total posts: 198 Location: Christchurch, New Zealand |
Forever! Thats a bit dramatic isn't it???
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Posted: Wed Jun 18, 2008 2:10 am
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ThrashergPowerband Master Joined: 18 May 2007 Total posts: 721 Location: Austin, Texas |
I'm very impatient, so if the servo turns for more than 10 seconds, that's forever in my book!!!
Ken, where are you based (what country)? I might have some spare gears I can send you but it would be better to know which one you need so I can make sure I have it!!
Gary
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Posted: Wed Jun 18, 2008 2:26 pm
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whitelcDaily Burner Joined: 16 Aug 2003 Total posts: 154 Location: Jyväskylä, Finland |
I had stuck cables and the servo motor was left ticking. After readjusting and oiling the cables it was fine. I bought new cables from Norbo though.
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Posted: Wed Jun 18, 2008 3:51 pm
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| kenk What's an RZ? Joined: 11 Jun 2008 Total posts: 5 |
I'll check the cables today. I already tooked the Servo motor apart and the gears seem to be fine.
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Posted: Thu Jun 19, 2008 2:55 pm
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BareAll-gear Wheelie! Joined: 28 Jan 2006 Total posts: 1908 Location: Vancouver Canada |
You then might have 2 problems: Broken cables AND a broken controller
Motor can only turn untill it reaches the end of cable travel.
But there are 2 cables, and it's improbable that Both are sheared.
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Posted: Fri Jun 20, 2008 8:05 pm
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