can anyone post a picture or pictures of the early 1911 drive unit? the unit on my car is an iron unit mounted on the one piece spindle arm. most references i have seen indicate brass units. thanks
More than likely it's made from pot metal, even finding a good one of those is hard let alone a brass one, give it a good clean and lube job and paint it a brassy color until and 'if' you ever find an original.
i didn't think a magnet would stick to potmetal,
and it sure sticks to this one.
Your right Stuart, but I had no trouble getting a magnet to stick to a couple of mine with the steel internals intacked.
1911 Stewart speedometer swivel unit should be brass plated cast iron I think. A magnet should stick to it.
The 1911 Stewart drive is pot metal. The input gear is held on with a round knurled nut. The 1912 Stewart drive is made of cast iron, it's the only year for cast iron, the internal gear for this model is also different. The input gear is held on with a cotter pin.
There is a very good article on the Steward speedometer in Model T Times July-August 2011. It was written by Russ Furstnow.
There were 4 differnt swivels in 1911.They were all pot metal.
I have the late one on my car,(no4).The gear on the front wheel is iron plated with semi gloss brass plate.
The swivel wheel is solid brass,(made by John Regan.
The swivel is brass plated.(high gloss)
The cable is brass with a knurled end on both ends
Hope this helps
Here is Pete's speedo gear set up. Since his 1911 is later than yours it uses the 4th and last type of swivel, along with the wider cast road gear.
Your car probably uses the thin stamped road gear.
thanks so much for all the info. here is a couple pics of my exist unit. looks like the search is on for the right parts.
the other view
I thought the early speedometer casings had knurled nuts?
Stuart, I have the cast iron swivel put aside for my late 1912 van. They are much more robust than the pot metal rubbish which came either side of them in production.
If you find what you are looking for, I have a friend in Australia who would love to get hold of your iron one for his early 1913 car. I found him good cast iron housings, but the gears are badly worn.
Allan from down under.