.....Chore Horse..... in with the New Year!!!

[Bob Carriere]

One of my 4 CH has a gauge missing and was looking for a new one..... search hi and Low for a small voltmeter.....convinced I needed a voltmeter...and of course could not find one ....Jordan told me Mac Auto had them,,,,,so went through the index of my 2017 MacAutocatalogue with no success..... then realized that my Old Mac AUto cat. only covered from the Ford model B 1932 and needed to look up Model A 1930... Jordan sent me a link from FB and there it was a replacement..... amp meter but still had doubts until Imadde it ot the barn today and Jordan was right it is a amp meter that I need..... which of course is not temporarily out of stock.....

So for the record....... IT IS a amp meter that I need and it fits a 1 5/8 hole in the control box........ finding a small one is the tricky part......... next regular size up is 2 1/16 or 2 5/8...... As suggested I tapped into LWD for parts and they are already on the way......

As far as the color and lettering for the control red dial, I may follow Jordan's suggestions of using a dry transfer/paint over than remove the letter process more in line with my big fingers.......

All my sheet metal has been sandblasted but it is too cold to paint in the barn and spraying paint inside the house workshop next to the wood stove is rather dangerous...... no sure if the fumes are dangerous but the risk of my wife smelling it would be very dangerous.....!!!!!!

Some of the original wiring will be reconditioned by using "liquid tape".....2 or 3 coats......thereby saving the original crimped/soldered original thick copper connectors.

Question for Mike..... where is the "resistance" located in the screened ignition lead????

Tim Bell..... the Chore Horse units that I have are all made by Outboard Marine Corp. from Peterborough, Ontario (OMC) and may have been done under license that came from the Iron Horse engine set up for Maytag washing machines........ some original design of that motor set up goes back to the late 1928 era....

There is one for sale around here listed at over 1200 dollars.....hihihi.... in as is condition with missing parts...

Stay tuned.

[Paul Singleton]

$1200 for a chore horse! I sold one about five years ago for $25 to a member here. It was missing the muffler but otherwise complete. No compression though.

[Bob Carriere]

Mac Auto which as become Eckler's does not show dimension/specs for the Ammeter they sell.... so got onthe chat line...... said gauge EK-28-20699-1 no script gauge is 1 and 3/4 inch in diameter ( actually 44mm or 1.73).... the gauge on the CH is 1 5/8 in.

could enlarge the hole BUT..... 1/8 of an inch????.... any suggestions????
If I go with enlarging the hole I got to do it now while it is apart........ just ate to cut into original sheet metal..... 1/16 each side all around........

How did you fit yours Jordan????? grind????

[Jordan Baker]

Bob I’ll check the ones I have from Macs that I bought years ago. It seems the original was a 20-20 ammeter and not the 30-30 ones the offer now. I suspect you will be fine with it firing without having to enlarge the hole.

[Mike K]

Originally Posted by Bob Carriere

Question for Mike..... where is the "resistance" located in the screened ignition lead????





Stay tuned.

The resistor is located where the clamp is , the clamp that holds the choke cable onto the shroud. The resistor is inside the screened spark plug lead . It's rare to find a chorehorse with the original screened ignition lead.

These sets go for around $100 to 200 here. Depending on condition, they are often incomplete and in rough shape.

I've noticed: even when they don't have much compression they will still run ok.

Electronics 101. The ammeter is a moving coil meter, able to be utilised as either a voltmeter or a ammeter. Often the ohms per volt or FSD ( Full Scale Deflection ) of the meter is written or printed on the face of the meter. You use a formula to work out the value of the external resistor , in parallel for measuring current and in series for measuring voltage. Using the formula you can fit a meter that has been calibrated to measure a certain parameter of either current or voltage.

This is a good read https://www.explainthatstuff.com/movingcoilmeters.html

Have you seen this ? https://www.vintageplanet.ca/Model-T...DqVGdTkhMYScYp
https://www.modeltford.com/item/5016...ShCRF9QlxU9bc9
Another

[Bob Carriere]

Someone from around the world tells me of a Canadian distributtor....thanks Mike. Never heard of Vintage Planet...... will surf their site...curious.

will have to go feel them spark plug wires on my CH..... 3 of them have the original woven steel mesh....but never seen a resistor added externally or inside the mesh????

I have yet to put a ohms tester on the variable control but it looks complete!!!

So the original gauge of 20-0-20 is about 1.625....maybe close enough to
1 5/8....the 1 /34 maybe the bezel???

So will order the 44 mm one from Mac AUto and make it fit like Jordan did......

Now to find that buried resistor in the plug lead!!!!!

[Bob Carriere]

Someone from around the world tells me of a Canadian distributtor....thanks Mike. Never heard of Vintage Planet...... will surf their site...curious.

will have to go feel them spark plug wires on my CH..... 3 of them have the original woven steel mesh....but never seen a resistor added externally or inside the mesh????

I have yet to put a ohms tester on the variable control but it looks complete!!!

So the original gauge of 20-0-20 is about 1.625....maybe close enough to
1 5/8....the 1 /34 maybe the bezel???

So will order the 44 mm one from Mac AUto and make it fit like Jordan did......

Now to find that buried resistor in the plug lead!!!!!