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 Post subject: variator problems
PostPosted: Fri Sep 17, 2010 9:19 pm 
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Joined: Tue Sep 14, 2010 3:12 am
Posts: 95
Location: New Orleans
I just bought a nice looking moby recently as a project bike. it doesn't run so I've been spending time trying to get her to start. at first the variator was fine for about a week whilst trying to start it, but now it doesn't seem to turn properly. it's way harder to peddle now. could I have broken, loosened or damaged anything inside the clutch? Is it possible I damaged the clutch while taking off the magneto cover? I need help guys.


Attachments:
File comment: oh. and is this a ground of some sort?
ground.jpg
ground.jpg [ 313.93 KiB | Viewed 1149 times ]
File comment: moby
moby.jpg
moby.jpg [ 7.97 KiB | Viewed 1141 times ]
File comment: or maybe it's just too old
variator.jpg
variator.jpg [ 279.14 KiB | Viewed 1149 times ]
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 Post subject: Re: variator problems
PostPosted: Fri Sep 17, 2010 9:39 pm 
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Joined: Mon May 26, 2008 4:44 pm
Posts: 2807
Location: Ontario Canada
Welcome to the group - I am sure we can help you figure out what is up and get her running for you.

That funny looking pigtail thing is a Magneto Harness Wire Guide - it goes under the right hand nut on the intake and the harness from the generator is supposed to be guided up and over the motor by it.
If the motor is hard to turn by hand perhaps it needs some lubrication if you have just been pedalling and not starting. How much oil have you been mixing in the gas?
What have you done on the magneto side that might have you feeling something is terribly wrong?


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 Post subject: Re: variator problems
PostPosted: Fri Sep 17, 2010 11:19 pm 
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Joined: Tue Sep 14, 2010 3:12 am
Posts: 95
Location: New Orleans
I've removed the magneto cover to replace the condensor. I took the old condensor out and mounted an external one by the coil. as far as the oil/gas ratio, I think that's ok because I own another moped and i use the same mix. I haven't tried oil at all. I also don't have a clutch puller either. the outer rim of the clutch turns perfectly, but the inner core doesn't turn so well anymore. what kind of oil should I use?


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 Post subject: Re: variator problems
PostPosted: Fri Sep 17, 2010 11:20 pm 
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Joined: Tue Sep 14, 2010 3:12 am
Posts: 95
Location: New Orleans
Oh! thanx for having me in the group and thanx for the input as well!


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 Post subject: Re: variator problems
PostPosted: Sat Sep 18, 2010 7:59 am 
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Joined: Fri Sep 11, 2009 12:59 pm
Posts: 141
hi,
the clutch inner is fixed directly to the crank , It may be that when working on the magneto ( the flywheel is also fixed directly to the crank) something is went too tight to the mag when reassembling... however the engine itself is also a candidate ,I'd remove the flywheel and also the clutch, however if the clutch outer spins freely the clutch should be ok,

dont try to start the engine as it could also be the problem ( tight mains or sticky piston ) and any further turning may cause damage ,Once mag and clutch inner are off the engine (spark plug out) should turn over freely ,


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 Post subject: Re: variator problems
PostPosted: Sat Sep 18, 2010 4:17 pm 
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Joined: Tue Sep 14, 2010 3:12 am
Posts: 95
Location: New Orleans
just ordered a puller so we should find out what's going on soon.

thanx!


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 Post subject: Re: variator problems
PostPosted: Sat Sep 18, 2010 7:33 pm 
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Joined: Mon May 26, 2008 4:44 pm
Posts: 2807
Location: Ontario Canada
Hey PANIC - send me a PM with your email address and I can send you the manuals for the bike if you need them...


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 Post subject: Re: variator problems
PostPosted: Mon Sep 20, 2010 2:24 am 
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Joined: Tue Sep 14, 2010 3:12 am
Posts: 95
Location: New Orleans
thank you so much! i needed this.


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 Post subject: Re: variator problems
PostPosted: Tue Sep 21, 2010 9:43 am 
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Joined: Tue Sep 14, 2010 3:12 am
Posts: 95
Location: New Orleans
I've got her running!!!!! starts up every try. but there are some problems.
1. the engine is not variating( clutch problem still?)
2. as soon as i hit the back brake the engine kills immediately.
3. will only start while on kickstand and seems to only rev high rpms even after adjusting throttle
4. non of the lights work

if anyone has any ideas please let me know, thanx!


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 Post subject: Re: variator problems
PostPosted: Tue Sep 21, 2010 11:03 am 
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Joined: Thu Jan 14, 2010 4:00 am
Posts: 145
Location: Cyprus
most possible timing. set the gap at 1,5-2,0mm BTDC and you should be fine


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 Post subject: Re: variator problems
PostPosted: Tue Sep 21, 2010 11:20 am 
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Joined: Mon May 26, 2008 4:44 pm
Posts: 2807
Location: Ontario Canada
To check the clutch action take the belt off and try to move the pulley part of the variator with your hand and hold the clutch cover still with your other hand. There should be no interference or resistance at all. I am thinking that one of the issues is that the clutch needs a good cleaning and variator needs a cleaning and relube. Possibly your starter clutch is not releasing and your back wheel is acting like a big flywheel and keeping the revs up after you start. That would also kill the engine if you stop the back wheel from turning.
If you do not have a clutch/flywheel puller tool yet it would be a good time to look on 1977Mopeds or Treats websites and get the tool.


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 Post subject: Re: variator problems
PostPosted: Tue Sep 21, 2010 6:46 pm 
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Joined: Tue Sep 14, 2010 3:12 am
Posts: 95
Location: New Orleans
gotcha! you guys are extremely helpful! the puller should be in any day now. yeah, points could definitely be one of the problems. my buddy and i who also has a moby started tinkering with the points.


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 Post subject: Re: variator problems
PostPosted: Tue Sep 21, 2010 9:58 pm 
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Joined: Mon May 26, 2008 4:44 pm
Posts: 2807
Location: Ontario Canada
If you are tinkering with points then make a timing tool for yourself and your buddy. Really helps to set up the timing or to play with the timing to find the sweet spot...
http://mabecanemobylette.freeforums.org/timing-tool-t895.html


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 Post subject: Re: variator problems
PostPosted: Thu Sep 23, 2010 12:48 pm 
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Joined: Tue Sep 14, 2010 3:12 am
Posts: 95
Location: New Orleans
just got my puller in yesterday and discovered that the flywheel/stater side is threaded but the clutch side is not. what the hell? got it from treats, but those guys don't have a number where i can reach them.


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 Post subject: Re: variator problems
PostPosted: Thu Sep 23, 2010 3:57 pm 
they do have contact instructions though for sending them an email about defective parts
link: http://www.treatland.tv/Articles.asp?ID=155


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