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04-11-2021, 10:38 PM | #1 |
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Max Speed of a Model A in Stock Form
I think I read someplace that a Model A was able to do 60 MPG in stock form when new. I was wondering just how fast have you been able to get your stock Model A. If you have an overdrive please let me know the percentage overdrive your using.
I have been sorting out my 29 Phaeton and I now can say she is in good mechanical shape so I decided to test my max speed. Using a GPS Speedometer I was able to get her up to 57 MPH. This is without an overdrive and the car felt good. Before anyone points out this is bad for the engine please note this was a test and I held 57 for no more than a minute on a back country road. I have a Mitchell 26% overdrive on order so that would put me around 71.8 MPH floored. I would never go that fast but I would like to drive 55/60 when needed without blowing up my engine. My test confirmed that my Model A is stable at that speed and could do 55mph all day long with an overdrive. Thanks for the comments. Ron Last edited by Model A Ron; 04-11-2021 at 11:51 PM. |
04-11-2021, 11:58 PM | #2 |
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Re: Max Speed of a Model A in Stock Form
Henry said they would all go 65 mph and if everything is in perfect shape and spark advanced they generally will but not for hours on end.
With your 26% Mitchell 2000 rpm is just about 60 mph so at 55 mph in OD you could drive all day long. Richard Anaheim CA |
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04-12-2021, 12:22 AM | #3 | |
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Re: Max Speed of a Model A in Stock Form
Quote:
Ron |
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04-12-2021, 01:04 AM | #4 |
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Re: Max Speed of a Model A in Stock Form
Just adding overdrive will not necessarily get you where you want to be. Your top speed and cruising speed will be limited by your engine torque. If you want to go 55-60 all day, you will need to increase the compression of your engine. The increase in compression will pretty directly increase you torque output. I have run a Snyder's 6:1 and switched to a Lion III head but I am chasing 60-65 mph cruising. You would probably be happy with 5.0 to 5.5:1 compression. The engine will wake up a little but it will not cause long term issues.
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04-12-2021, 01:41 AM | #5 |
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Re: Max Speed of a Model A in Stock Form
I have a Mitchell 26% overdrive on order so that would put me around 71.8 MPH floored. I would never go that fast but I would like to drive 55/60 when needed without blowing up my engine. My test confirmed that my Model A is stable at that speed and could do 55mph all day long with an overdrive.
Thanks for the comments. Ron[/QUOTE] Just hope you are able to pull it up in a hurry if necessary at those speeds.
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04-12-2021, 01:44 AM | #6 |
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Re: Max Speed of a Model A in Stock Form
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04-12-2021, 05:28 AM | #7 |
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Re: Max Speed of a Model A in Stock Form
Perhaps you should think about your brakes and steering at 65 mph let alone the kids on bikes and animals in the road. I like 35-40 and enjoying the scenery, waves and smiles from other folks on the road.
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04-12-2021, 05:57 AM | #8 |
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Re: Max Speed of a Model A in Stock Form
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04-12-2021, 06:18 AM | #9 |
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Re: Max Speed of a Model A in Stock Form
I agree totally with Springerpete: Think about a panic stop at that sort of speed.
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04-12-2021, 03:30 PM | #10 |
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Re: Max Speed of a Model A in Stock Form
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04-12-2021, 03:46 PM | #11 |
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Re: Max Speed of a Model A in Stock Form
To each his own but the Model A was engineered to do more than 35 40mph. If you think your car is not safe over that speed fix it......I just did and it was worth seeing her come alive.
If you like driving 35 to 40 enjoy your car but still fix it regardless in the name of safety. If its not safe over 40 its not safe under 40 as well. Ron Last edited by Model A Ron; 04-12-2021 at 03:54 PM. |
04-12-2021, 06:33 AM | #12 | |
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Re: Max Speed of a Model A in Stock Form
Quote:
It’s not how fast you can go, it’s being safe getting there. Enjoy. |
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04-13-2021, 10:27 PM | #13 |
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Re: Max Speed of a Model A in Stock Form
Are you suggesting that the people on hear would not be telling the truth in regards to Max Speed of a Model A in Stock Form?
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04-13-2021, 10:55 PM | #14 |
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Re: Max Speed of a Model A in Stock Form
Yep, I think that's EXACTLY what he was suggesting!
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04-12-2021, 08:36 AM | #15 | |
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Re: Max Speed of a Model A in Stock Form
Quote:
My Brakes are in very good shape so that's not a concern. If they were bad I would not even be driving the car until fixed. Ron |
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04-12-2021, 06:18 AM | #16 |
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Re: Max Speed of a Model A in Stock Form
Mine will do 65, but it is not a pleasant experience. I've only done it once. I felt like I wasn't fully in control, like pushing a racecar to the edge of the envelope. I wouldn't do it again.
I will occasionally hit 50, but only for short spurts. I seem to have a sweet spot at about 47 where she just settles in and feels just right. Ken
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04-12-2021, 07:25 AM | #17 |
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Re: Max Speed of a Model A in Stock Form
I have a modified car, the engine develops about double the power of stock, mitchell OD, modern radial tires on 16" wheels,f100 steering box, woven shoes, cast iron drums, Teds. friction shocks all four corners, removed 3 leaves from rear spring...
Driving a model a over 65 mph is uncomfortable, regardless of how tight everything is. Wide foot print modern radials on 16" wheels allow the car to handle ride and stop better. With the improved mechanical system and tires I use stopping the car is a matter of pedal pressure, no skidding on panic stops. Cant imagine running stock 21" wheels and bias ply tires north of 45 mph.. you will find yourself in trouble in traffic. The removed leaves and friction shocks compensate for a 31" rear wheel diameter, the combination softens the ride and can be adjusted for the feel, suspension condition and response is important for high speed driving as well. The easiest thing to do is bolt on engine power, properly restoring and tuning the chassis is the important part. |
04-12-2021, 07:50 AM | #18 |
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Re: Max Speed of a Model A in Stock Form
I have owned my Model A Coupe for a little over 2 years now and have learned quickly that going speeds excess of 50 mph (with fenders) on a windy day can cause a little turbulance. I definatley have both hands on the wheel.
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04-12-2021, 07:53 AM | #19 |
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Re: Max Speed of a Model A in Stock Form
Yes, you would benefit greatly by adding a 6.1 to just an overdrive. Hills become much easier to navigate.
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04-12-2021, 08:54 AM | #20 |
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Re: Max Speed of a Model A in Stock Form
https://purperformance.com/p-29669-rpm-calculator.html
65mph = 2663rpm Max rpm? ford stop testing at 2800. |
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