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Joined: Feb 2016
Posts: 7
Grease Monkey
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Grease Monkey
Joined: Feb 2016
Posts: 7 |
HELP!! I do not seem to be getting much response to my post in a different thread so I thought I would try again. I have a case number 590204 3 speed, 1916-1928 that I would like to have converted to synchromesh gears. Does anybody in Chevy land know of a shop that does this kind of work. Anywhere in the USA or Canada.
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Joined: Oct 2011
Posts: 140
Shade Tree Mechanic
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Shade Tree Mechanic
Joined: Oct 2011
Posts: 140 |
Hi NormC,
Not a simple thing to do and probably never been done. My question would be why? Chev 4 gearboxes are quite an easy design to operate, my wife drives my '25 nicely.
Regards
Al
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Joined: Feb 2016
Posts: 7
Grease Monkey
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Grease Monkey
Joined: Feb 2016
Posts: 7 |
Thanks for the reply. The why is somewhat interesting. This transmission is in a 1921 Ford Model T Speedster. How it got there I will never know except that when it was built it was the tranny on the floor or shelf that had no use. I was hoping to change it out because it shifts(double clutch) ok but it is not real smooth. Some grinding and hard to get to 1st without a complete stop. It may have something to do with the fact it uses the tranny bands of the T transmission as a clutch. Does that sound like a normal Chev tranny from this vintage? I am very open to any suggestions or thoughts. Thanks.
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Joined: Aug 2006
Posts: 1,774 Likes: 4
ChatMaster - 1,500
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ChatMaster - 1,500
Joined: Aug 2006
Posts: 1,774 Likes: 4 |
Wow, having built a Model T speedster from junk I collected from farm groves, I can't quite visualize how they coupled that up. If it is that modified, why can't you use a later transmission that has synchromesh?
Ed
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Joined: Feb 2016
Posts: 7
Grease Monkey
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Grease Monkey
Joined: Feb 2016
Posts: 7 |
If I had done the original modification (of course I would be 120 years old) I would be a little more confident starting down that road. I probably will just stay with what I have. Does the current shifting sound about right as far a double clutching down shifting and so on? Do you have any thoughts as to what tranny might match up to what I have? It's a 1916-1928 3 speed box.
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Joined: Sep 2006
Posts: 1,255 Likes: 10
ChatMaster - 1,000
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ChatMaster - 1,000
Joined: Sep 2006
Posts: 1,255 Likes: 10 |
Hello Norm, There is a firm that converts original model A transmissions to have second and third synchromesh gears. I think its around $2000. Some people are doing it. Probably more useful in a metropolitan area with a greater number of stop lights and stop signs. Try googleing it and see if it pops up. They make the overdrive that goes in the drive tube of a model A. Mitchel mfg. in Colusa CA
Last edited by beachbum; 02/18/16 12:53 PM.
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Joined: Jan 2002
Posts: 30,701 Likes: 141
ChatMaster - 25,000
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ChatMaster - 25,000
Joined: Jan 2002
Posts: 30,701 Likes: 141 |
It will shift smoothly and quietly with double clutching. Double clutching is leaving the clutch pedal out when going from 1st to 2nd when passing through neutral....and same for 2nd to 3rd.
After some practice it just comes naturally.
Gene Schneider
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Joined: Apr 2006
Posts: 3,511 Likes: 47
ChatMaster - 3,000
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ChatMaster - 3,000
Joined: Apr 2006
Posts: 3,511 Likes: 47 |
There is a good description of double clutching in the '28 Owner's manual. See page 14 and 15: http://chevy.oldcarmanualproject.com/chevyowner/28cim14.htm Cheers, Dean
Dean 'Rustoholic' Meltz old and ugly is beautiful!
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Joined: Sep 2006
Posts: 1,255 Likes: 10
ChatMaster - 1,000
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ChatMaster - 1,000
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Rereading his posting - if the bands are still in position and functional sometimes people mounted another transmission behind the original trans. Depending on the direction of the second trans would dictate what they were trying to do. In the normal power transmission direction it would be used as a brownie box to give a much broader range of gear ratios. If it is turned around it could be used as an overdrive trans. Probably be rather noisy but the price was right if it came off a shelf. There are Warford transmissions at the Portland Swap Meet every year.
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