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Old 10-06-2012, 04:02 PM   #21
SteveB31
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Default Re: Close ratio gears

Are you guys suggesting that the Mitchell gears are Chinese made?
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Old 10-06-2012, 04:10 PM   #22
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Default Re: Close ratio gears

for a little more put in a ford 3 speed + OD full syncromesh and bolts right in.
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Old 10-06-2012, 08:38 PM   #23
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Default Re: Close ratio gears

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Originally Posted by Charlie Stephens View Post
The syncro gears from Mitchell Manufacturing are a better ratio. Has anybody had any experience with their syncro gears?

Charlie Stephens
I have two of their transmissions, but only one installed. They are "supposed to" have the 15% better 1st. and 2nd. gears. I can't tell that much difference, though I really like the synchro. My wife does even more so.
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Old 10-08-2012, 01:35 AM   #24
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Default Re: Close ratio gears

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I see from your Avatar your a Rock & Roller Do you go to the Rhytm Riot or the Rockabilly Rave ? Maybe I'll see your car there one day !!

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Old 10-08-2012, 02:22 AM   #25
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Default Re: Close ratio gears

Tried out the close ratio gears on the track at the weekend. Behind about an estimated 70 horses of banger they performed well - although at Prescott hill climb I did have to keep grabbing top (easy) and crashing back down into 2nd for the hairpins (easy enough but a crash...).

I do like the lack of synchro - it gives it a more vintage car feel. From what I gather, Mitchell don't recommend their synchro conversions for anything more than the standard horsepower?

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Old 10-08-2012, 08:02 AM   #26
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Default Re: Close ratio gears

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[QUOTE=Hotrodfil;513226]T. . . From what I gather, Mitchell don't recommend their synchro conversions for anything more than the standard horsepower?

To make room to synch 2 & 3 (1st is not synchro) Mitchell had to get room somewhere. The gears are narrower than stock. That said, I know several guys with 80+HP in front of a Mitchell. You just can't pop the clutch or slam gears.
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Old 10-08-2012, 09:33 AM   #27
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Default Re: Close ratio gears

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I do like the lack of synchro - it gives it a more vintage car feel.
I like the idea of more useful first and second gear ratios but have no interest in syncros. I've driven A's with V8 gear boxes and it's unnatural and just not fun for me.
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Old 10-08-2012, 12:32 PM   #28
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Default Re: Close ratio gears

Anybody with a strong loathing of unsynchronized shifting should, before spending a lot, have a ride with someone who enjoys them...the education is not necessarily going to be successful for everyone because it involves developing a sort of Zen One-with-the-transmission feel, but I'm sure many could learn this and enjoy it. It is possible for many to develop a very close feel for gear speeds and of throttle openings that put engaged gears into a sort of floating state.
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Old 10-08-2012, 01:51 PM   #29
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Default Re: Close ratio gears

Kind of a Zen and the Art of Model A Transmission Shifting (with apologies to Robert M. Pirsig).

Is it hard? Not if you have the right attitude. Robert M. Pirsig
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Old 10-08-2012, 02:22 PM   #30
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Default Re: Close ratio gears

Changing down on the road is normally quite easy. Need to practice at speed...
I normally run my flattie powered 24T at Prescott in 2nd gear - 3.54 rear end, '39 box, 5.50 x 16 tyres.

With the Tourer - 3.27 rear end and 4.75 x 19 tyres I had to change in to top before reaching the hairpins.

Best time in the V8 powered modified 61.63, highest speed at the 'bridge' (pretty much a straight charge from the line) 51mph.

Best time in the Tourer - 71.01, highest speed at the 'bridge' 44mph in second gear. So I'm quite happy comparing me, with me.

Last edited by Hotrodfil; 10-09-2012 at 02:32 PM.
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Old 10-10-2012, 03:19 AM   #31
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Default Re: Close ratio gears

Number crunching.
Been looking at the results from Prescott hillclimb online and doing some online calcs.

Oh yes. Sensibly (not) I seem to build cars with no gauges. Saves all that worrying looking down at the dashboard. Cane it till it bursts and change up. Thought I'd work out the revs the poor old dear was doing as she flapped her skirts under the bridge at Prescott.

44mph, 1.55:1 second gear, 3.27 final drive, 29.8" tyres - 2514 rpm. Hmmm - sounded like more! Tailed off a little - it felt like there was more but didn't want to burst it!

Driving along the Buckingham bypass on the way home and opened her up a bit...

68mph (sat nav), 1:1 top gear - 2507 rpm. Bottom screen rattled loose (hadn't tightened it up after taking the top screen out at the track), blew innards and plunged cold air onto my tootsies, so we backed off a bit.

Rolling along easily most of the time around 55-60mph and it turns out the ol' banger is turning between 2000-2200 rpm which is reasonable for a babbit bottom end.

More than chuffed. Winter time will hopefully see a full pressure shell bottom end model-A engine under the bonnet as a comparison.
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Old 10-10-2012, 05:56 AM   #32
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Default Re: Close ratio gears

So when all is said and done, do you like the 3.27:1 gear set? I was thinking of installing them in my coupe when I rebuild the motor. The alternative is a mitchell overdrive, which is quite pricey.
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Old 10-10-2012, 06:29 AM   #33
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Default Re: Close ratio gears

Like the 3.27's? Yup. Coupled with the close ratio gears it works a treat.
The tourer is a bit lighter than the Fordor but that's handles a 3.54 set with the standard transmission ratios with aplomb.
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Old 10-11-2012, 11:58 AM   #34
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Default Re: Close ratio gears

Video between the hairpins.

https://www.youtube.com/watch?v=abgKF6yfHho
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Old 03-28-2020, 10:47 PM   #35
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Question Re: Close ratio gears

Are these close ratio gears still available?
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Old 03-29-2020, 12:33 AM   #36
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Default Re: Close ratio gears

Quote:
Originally Posted by Patrick L. View Post
That is great info, thanks.. I was considering a Mitchell but was concerned of cost of especially quality.. I'm not crazy about the stock ratios and the English and Chinese[ Mitchell] options seem interesting..
Quote:
Originally Posted by SteveB31 View Post
Are you guys suggesting that the Mitchell gears are Chinese made?
Are Mitchell gears Chinese? I never heard of this before reading this 8 yo thread?
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Old 03-30-2020, 07:51 AM   #37
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Default Re: Close ratio gears

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Are these close ratio gears still available?

Anyone know?
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Old 03-30-2020, 10:19 AM   #38
Ernie Vitucci
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Default Re: Close ratio gears

Good Morning...I have had a Mitchell Overdrive in our 1931 Tudor for 15 years and it has performed perfectly and I really love having two gear ranges to work with. Here in the Desert it is pretty flat and the high end 3rd over is great. The mountains around the 'Valley of the Sun' would challenge a mountain goat, and going up the mountain to Payson, I tend to use 1-2-3 and 2nd over and 3rd over...Ernie in Arizona
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Old 04-15-2020, 09:14 AM   #39
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Default Re: Close ratio gears

Below is all they have left:

20/27 ratio new 785.00
20/27 ratio used 400.00
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