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02-19-2019, 07:37 AM | #1 |
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Location: Boston North Shore
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Mitchell Overdrive Technique
I have a Mitchell overdrive in my coupe. When climbing hills I will sometimes shift second gear and overdrive which works well. The tricky part is coming out of overdrive, gears will not shift smoothly out of overdrive and back into second gear. Shifting into 3rd then overdrive will not work well either. Gearing in 3rd would be much too slow especially with 3:54's in the rear.
Thoughts? Thanks, S |
02-19-2019, 11:03 AM | #2 |
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Location: St Charles , Missouri
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Re: Mitchell Overdrive Technique
Smitty,
I do that all the time using it as a gear splitter in my '30 Tudor. After installing a good number of overdrives it sounds like to me the linkage may need some adjusting. Make sure nothings binding. If you're clutch is adjusted properly and carb idle is low and not too high you should be fine. I would take a good look at your mitchell shift linkage and adjust. You can always touch base with Steve at Mitchell for advise on that. All the best! Larry Shepard |
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02-19-2019, 11:15 AM | #3 |
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Re: Mitchell Overdrive Technique
Just a thought...Is the Mitchel box full of oil.
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02-19-2019, 08:09 PM | #4 |
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Re: Mitchell Overdrive Technique
Thanks, the box is full of oil, thought the linkage is ok, shifts fine under normal. Shifting transmission is trickier when climbing or descending hills. this also true with normal shifting of the trans.... Everyone find this to be the case?
S |
02-27-2019, 10:20 PM | #5 |
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Re: Mitchell Overdrive Technique
Our Mitchell OD shifts very smoothly and easily both in and out of OD. I would check the linkage adjustment as previously suggested. Also, is your clutch fully disengaging/pedal adjusted properly?
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02-28-2019, 02:48 AM | #6 |
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Re: Mitchell Overdrive Technique
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In case it is useful: I live up on a hill, and drive my Model A's every day up and down this hill, through several traffic lights, and then on the freeway, for a total of about eighth miles each way, plus typically another 5-20 additional mixed suburban/freeway miles during each day. I also have a 1:3.54 rear end, on a '31 Roadster and a '31 S/W Town Sedan; here are my shifting habits: From traffic lights, in suburban streets: 1st -> 2nd -> 2nd+OD, 3rd Onto the freeway: 1st -> 2nd -> 2nd+Od, 3rd, 3rd+OD Up the very steep hill: 1st -> 1st+OD, 2nd... It may not be the way 'you're supposed to do it,' but when shifting from 1st+OD to 2nd, or from 2nd+OD to 3rd, I always: a) depress clutch b) shift trans to neutral c) shift Mitchell from OD to standard drive d) double clutch e) shift trans to next highest gear It's a bit involved, especially so when going from 1st+OD to 2nd, but with experience is the only way I've found for grind-free shifts. It has the added bonus of giving the uninitiated passenger the impression that I'm casting a spell on my car. Safe driving, Andrew Last edited by apbright; 02-28-2019 at 02:55 AM. |
02-28-2019, 05:57 PM | #7 |
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Location: san diego
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Re: Mitchell Overdrive Technique
Mine does that when its cold. After its warmed up its not a problem. I imagine its cold in boston, maybe once it isnt winter it will be better.
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02-28-2019, 06:34 PM | #8 | |
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Re: Mitchell Overdrive Technique
Quote:
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