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 Post subject: Ypvs Servo
PostPosted: Sun Oct 22, 2017 1:05 pm 
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Joined: Mon Nov 01, 2010 3:51 pm
Posts: 46
Location: North West UK
Here's one for yer...

For some reason.....when I switch my ignition on.....my Ypvs Servo has started to just go round and round....
Just...zzzzzzzzzzzzzzzzzzzzzz

Instead of zzzzz (one way) then zzzzz (the other way) lolol

Any thoughts??? :shock:

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 Post subject: Re: Ypvs Servo
PostPosted: Sun Oct 22, 2017 4:24 pm 
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Joined: Tue Jul 19, 2011 7:49 pm
Posts: 246
Location: Toulouse France
There are 2 possible causes :
1 : The position sensor in the motor is out of order. Never heard of this but theoritically possible. Sensor is a potentiometer and is easy to check : see service manual for more details.
2 : The most probably with 99,99 % of chance : Your YPVS control box is out of order. Typical symptom, I had the same default. Contact Nick at 2t-racelab.com, he will repair it if possible.


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 Post subject: Re: Ypvs Servo
PostPosted: Mon Oct 23, 2017 10:45 am 
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Joined: Thu Nov 17, 2005 7:12 am
Posts: 1373
Location: Leicestershire, UK
Flat battery or very low charge is another possibility - attach a battery charger to the battery while the battery is still connected and see if the servo works ok.

Cheers
Paul


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 Post subject: Re: Ypvs Servo
PostPosted: Mon Oct 23, 2017 11:47 am 
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Joined: Tue Jul 19, 2011 7:49 pm
Posts: 246
Location: Toulouse France
rd84 wrote:
Flat battery or very low charge is another possibility - attach a battery charger to the battery while the battery is still connected and see if the servo works ok.

Cheers
Paul


No, if the battery is low, motor will simply move slowly or not at all. But if it happens to move, test procedure will be done normally.


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 Post subject: Re: Ypvs Servo
PostPosted: Mon Oct 23, 2017 3:28 pm 
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Joined: Mon Nov 01, 2010 3:51 pm
Posts: 46
Location: North West UK
Cheers guys.

Phildu31. It's a brand new Zeeltronic ypvs/cdi box that's being wired into a one off wiring loom for my YZR replica.
About 90% through it at the mo.....
Ypvs servo tested on ignition switch "ON"..... fine. Has been since initially wiring in.

Went in the garage t'other day to start wiring the Kosovo clocks on.....but before I did I switched the ignition on......Zzzzzzzzzzzzzzzzzzzzzzzzzzzz.....Constant going round now for no reason!!!

No Idea why.

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 Post subject: Re: Ypvs Servo
PostPosted: Mon Oct 23, 2017 3:55 pm 
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Joined: Tue Jul 19, 2011 7:49 pm
Posts: 246
Location: Toulouse France
So you replaced the original YPVS box with a Zeeltronic one...Just an unimportant detail.
Would have been honest to say it before.


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 Post subject: Re: Ypvs Servo
PostPosted: Wed Nov 01, 2017 1:37 pm 
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Joined: Thu Jan 26, 2006 3:56 pm
Posts: 622
Location: la belgique
Are the pulley cables attached to the pvs?
Am sure it s not

M.

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