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Old 08-31-2018, 03:56 PM   #1
nosoup4u
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Default Car goes too fast!

Okay, this may sound goofy but here is what I am doing. I am making something like a model T speedster with as many parts as possible from old John Deeres. The front and rear axles are model A ford. There is a precedent for this as Deere used a model A transmission and steering column in one of their tractors.

The engine I am using is a flat head two cylinder vertical capable of only about 14 horse at 1500 rpm. Anyway I got the steering, clutch and accelerator and a makeshift seat hooked up the other day and drove it out of the shop. It is scary fast! I was hoping to be able to put around tractor shows in low gear at maybe 5 -10 mph but there is no way to hold this thing down that slow.
I bought the rear axle from a model A restorer years ago and I have no idea what it came off of so I have to assume it has the standard 3.78 ratio.
Other than trying to find a 4.33 or 4.55 ring gear is there anything else I can do to slow it down?
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Old 08-31-2018, 04:06 PM   #2
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Default Re: Car goes too fast!

Pull one spark plug wire.

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Old 08-31-2018, 04:42 PM   #3
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Default Re: Car goes too fast!

Find AA rear axle.
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Old 08-31-2018, 04:44 PM   #4
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Default Re: Car goes too fast!

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Originally Posted by denniskliesen View Post
Find AA rear axle.
Yup! With Worm drive.
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Old 08-31-2018, 05:07 PM   #5
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Default Re: Car goes too fast!

or a 4 speed AA trans. 1st is granny low.
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Old 08-31-2018, 05:10 PM   #6
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Originally Posted by Dave in MN View Post
Yup! With Worm drive.
I wouldn't be opposed to putting in an entirely new rear axle since the brakes on the present one are going to need virtually every part replaced. Doing a little googling it looks like these rear ends are from 5.4 to 7. something ratios, which would be better.
Questions:
1. Is the drive shaft assembly similar to a car, will they bolt to a regular 3 speed.
2. Will model A passenger wheels bolt on?
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Old 08-31-2018, 05:23 PM   #7
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Default Re: Car goes too fast!

Use a AA truck 4-speed transmission.


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Old 08-31-2018, 05:30 PM   #8
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Default Re: Car goes too fast!

Or two transmissions.
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Old 08-31-2018, 05:31 PM   #9
Bob C
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Default Re: Car goes too fast!

1. Is the drive shaft assembly similar to a car,yes will they bolt to a regular 3 speed.Yes but he u-joint can be hard to find
2. Will model A passenger wheels bolt on?No.[/QUOTE]


This link may give you some ideas. https://www.fordbarn.com/forum/showt...ght=doodle+bug

Last edited by Bob C; 08-31-2018 at 05:47 PM.
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Old 08-31-2018, 05:51 PM   #10
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Default Re: Car goes too fast!

How difficult would it be to replace the three speed with a four speed?
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Old 08-31-2018, 06:46 PM   #11
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Default Re: Car goes too fast!

There is a precedent for this as Deere used a model A transmission and steering column in one of their tractors.


Very interesting, don't know of any John Deere that used any Model A parts.
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Old 08-31-2018, 08:13 PM   #12
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There is a precedent for this as Deere used a model A transmission and steering column in one of their tractors.


Very interesting, don't know of any John Deere that used any Model A parts.
The model Y built in 1936. Only 26 built.
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Old 08-31-2018, 09:35 PM   #13
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Originally Posted by nosoup4u View Post
How difficult would it be to replace the three speed with a four speed?
Bolts to the same engine, I know of several standard model A pickups that have a 4 speed in them, im not sure if they had to shorten the rear end any or not - i dont think they did...

it did just bolt in though.
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Old 08-31-2018, 09:35 PM   #14
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Default Re: Car goes too fast!

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The model Y built in 1936. Only 26 built.
Do you have any references for the Model Y? I'd like to read more about it. Thanks!
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Old 08-31-2018, 09:37 PM   #15
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The model Y built in 1936. Only 26 built.
What's the torque on that engine? For a 2 cylinder, they had a lot of grunt.
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Old 08-31-2018, 09:45 PM   #16
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Do you have any references for the Model Y? I'd like to read more about it. Thanks!
https://greenmagazine.com/small-mich...pment-model-y/
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Old 08-31-2018, 09:50 PM   #17
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What's the torque on that engine? For a 2 cylinder, they had a lot of grunt.
I don't know what the torque is. It's 3.5 x 4 bore and stroke two cylinder. Runs to 1850 rpm. I was afraid it wouldn't have enough power to pull the thing and it's so fast it's scary for what I want to do with it.
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Old 08-31-2018, 10:08 PM   #18
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Thank you for the reference! Learned something new today. With only 40-some made and then "un-made" within a couple of years, it's small wonder that even most Deere collectors aren't familiar with it.
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