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new mag, help with timing WC
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psheridan View Drop Down
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Joined: 10 Apr 2016
Location: Omaha, Nebraska
Points: 107 		Post Options Post Options   Thanks (0) Thanks(0)   Quote psheridan Quote  Post ReplyReply Direct Link To This Post Topic: new mag, help with timing WC
    Posted: 18 Oct 2016 at 7:44pm
I am working on getting my unstyled WC running
I have rebuilt the Zenith carb
my rebuilt Fairbanks Morse J mag is back from the shop and looks great
the rebuilder has taped the mag into position ready to fire on #1 cylinder
I had a WC unstyled tractor 30 years ago and this is my second go round with making one run and look great
 
Can it be as easy as getting the #1 cylinder to top dead center and with the mag in the firing position place it into the housing , matching the slot to the mag and bolting it into place
 
I have also seen where there is a marking on the flywheel that may indicate TDC of the #1 cylinder
 
Tractor out of gear, clutch locked into place, gas to the carb
 
How dangerous is a kick back if the timing is off
keeping my thumb on the underside of the crank
any other precautions I may take
 
There is not a better sound than a WC starting and running smooth
 
any help would be great
 
Paul
 
 
 
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Chalmersbob View Drop Down
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Joined: 11 Sep 2009
Location: Pennsylvania
Points: 2122 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Chalmersbob Quote  Post ReplyReply Direct Link To This Post Posted: 18 Oct 2016 at 9:26pm
You're on the right track. Put your thumb into the spark plug hole on cylinder 1 and hand crank the engine until you feel air coming out of the cylinder. I then use a wire and push it into the hole down to the top of the piston and slowly turn the crank until the piston is at the top. Then install you mag. LOL Bob
4 B's, 1 C's,3 CA's, 2 G's WD, D14, D15, B-1, B10, B12, 712S,
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DanD View Drop Down
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Joined: 11 Sep 2009
Location: WI
Points: 856 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DanD Quote  Post ReplyReply Direct Link To This Post Posted: 18 Oct 2016 at 9:37pm
The key point in the previous post is that you have to have #1 at TDC after it pushes air out past your thumb. Tells you it's on the compression stroke. Can also be at TDC on the exhaust stroke and it won't run if you time to that!
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WF owner View Drop Down
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Joined: 12 May 2013
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Points: 5095 		Post Options Post Options   Thanks (0) Thanks(0)   Quote WF owner Quote  Post ReplyReply Direct Link To This Post Posted: 19 Oct 2016 at 9:47am
Here is a link that I use when timing a magneto.

I find it very helpful!
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TERDAL View Drop Down
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Joined: 26 Oct 2013
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Points: 148 		Post Options Post Options   Thanks (0) Thanks(0)   Quote TERDAL Quote  Post ReplyReply Direct Link To This Post Posted: 16 Jun 2017 at 7:34am
the tdc mark everyone is talking about.  Where is this located on the unstyled WC?  the top of the bell housing or the bottom?

Thanks Terry
816-392-6163 
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JoeM(GA) View Drop Down
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Joined: 12 Sep 2009
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Points: 4903 		Post Options Post Options   Thanks (0) Thanks(0)   Quote JoeM(GA) Quote  Post ReplyReply Direct Link To This Post Posted: 16 Jun 2017 at 7:39am
A hand start WC is at top of housing
Allis Express North Georgia
41 WC,48 UC Cane,7-G's,
Ford 345C TLB
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DanD View Drop Down
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Joined: 11 Sep 2009
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Points: 856 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DanD Quote  Post ReplyReply Direct Link To This Post Posted: 16 Jun 2017 at 3:07pm
Here is a video I found on youtube showing the fire mark.  I assume a WC is like a D17 in that it has both a TDC and F mark.  The F mark should come a few degrees before the TDC mark as you turn the engine over.

[TUBE]b4_6BGmoKX8[/TUBE]
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CTuckerNWIL View Drop Down
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Joined: 11 Sep 2009
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Points: 22825 		Post Options Post Options   Thanks (0) Thanks(0)   Quote CTuckerNWIL Quote  Post ReplyReply Direct Link To This Post Posted: 16 Jun 2017 at 4:16pm
Originally posted by TERDAL TERDAL wrote:

the tdc mark everyone is talking about.  Where is this located on the unstyled WC?  the top of the bell housing or the bottom?

Thanks Terry
816-392-6163 


The TDC mark is on the flywheel and could be at the top of the housing with the original flywheel or, like my 35 WC, it has a ring on the flywheel for the starter and the mark will be at the bottom.  It all depends on what flywheel is on the engine.
http://www.ae-ta.com
Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF
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