VAK 1C magneto problem

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nthub
Posts: 26
Joined: Sun Jun 16, 2013 9:20 am
Location: Marsden

VAK 1C magneto problem

Post by nthub » Wed Jun 26, 2013 9:26 am

Back again!

My VAK 1C is still not starting - the magneto appears to have failed. A quick check shows that the magneto wire that attaches to the stop wire attachment peg / points and condenser is earthed (when not attached)
Are they easy to strip or a specialist job - recommendations?

Thanks
Neil
Neil
VAK 1C and Grey & Gold FE35

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prblake
Posts: 160
Joined: Wed Aug 25, 2010 1:52 pm
Location: Queensland, Australia

Post by prblake » Sat Jun 29, 2013 6:06 am

Neil

I am no expert on magneto's but I had rusty old non working one in my Cropmaster when I restored it. I dismantled it (not difficult from memory and cleaned up the armature and checked that all the windings remained insulated. I used some tiny plastic spaghetti to replace the insulation where the wire comes up through the base plate. Cleaned an reset the points and installed a new condensor.

It fired up and has not missed a beat since.

Worth a try.
Paul

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db2d
Posts: 2195
Joined: Fri Feb 24, 2012 10:01 pm
Location: Monmouthshire

Post by db2d » Sat Jun 29, 2013 8:25 am

Does the mag have the correct set of points? Have they been changed recently?

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nthub
Posts: 26
Joined: Sun Jun 16, 2013 9:20 am
Location: Marsden

Post by nthub » Mon Jul 01, 2013 9:10 am

db2d wrote:Does the mag have the correct set of points? Have they been changed recently?
Hi db2c
Replied to you PM thanks but to continue here for anyone else following:

Had new points just before I got her a couple of weeks ago. Would only bump start. Look correct in set up. The insulating washer is under the pivot.
Had a faulty carb float which I replaced and the started on the crank third pull. Ran 15 mins then shut down by earthing mag on the post.

Won't restart on crank now but unable to check spark on my own.

Don't know how sensitive choke it to flooding either.
Bought a spare 4VRA CM10 mag known working for bits if I need them.

Hints on checking mag etc. most welcome.
Neil
VAK 1C and Grey & Gold FE35

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nthub
Posts: 26
Joined: Sun Jun 16, 2013 9:20 am
Location: Marsden

Post by nthub » Mon Jul 01, 2013 9:12 am

prblake wrote:Neil

I am no expert on magneto's but I had rusty old non working one in my Cropmaster when I restored it. I dismantled it (not difficult from memory and cleaned up the armature and checked that all the windings remained insulated. I used some tiny plastic spaghetti to replace the insulation where the wire comes up through the base plate. Cleaned an reset the points and installed a new condensor.

It fired up and has not missed a beat since.

Worth a try.
Paul
Thanks Paul.
Will give it a go if still not running tonight. I've bought another mag for spares / practice of the 4VRA family - a CM10
Cheers
neil
Neil
VAK 1C and Grey & Gold FE35

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db2d
Posts: 2195
Joined: Fri Feb 24, 2012 10:01 pm
Location: Monmouthshire

Post by db2d » Tue Jul 02, 2013 11:06 pm

Is the "spare" mag off a DB? Check the rotation.It is clockwise as you see it from the top.These mags are used on other engines but the rotation is anti-clockwise and the points could be the incorrect type.

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nthub
Posts: 26
Joined: Sun Jun 16, 2013 9:20 am
Location: Marsden

Post by nthub » Wed Jul 03, 2013 9:47 am

db2d wrote:Is the "spare" mag off a DB? Check the rotation.It is clockwise as you see it from the top.These mags are used on other engines but the rotation is anti-clockwise and the points could be the incorrect type.
Thanks - I'll check. Old one has run again albeit a bit rough. The spare is really a cheap coil etc. as I don't know it's oringinal use. Be a bonus if a straight swap!
Cheers
Neil
Neil
VAK 1C and Grey & Gold FE35

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