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01-23-2015, 07:40 PM | #1 |
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TT truck,what were rearend ratios?
What ratio were TT truck rearends?
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01-23-2015, 09:39 PM | #2 |
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Location: Brownsburg,In.
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Re: TT truck,what were rearend ratios?
5:1 and 7 1/2 :1 I believe.
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01-24-2015, 12:06 PM | #3 |
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Location: Idaho
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Re: TT truck,what were rearend ratios?
Wow, with such low gearing in the rear end, I'm wondering how the TT trucks were made to scoot down the country roads so briskly (as the one did in the "Paper Moon" movie --- once the engine wasn't sputtering)?
Is there an easy way to look at a TT rear end housing and decipher whether it has the 5:1 gears or the 7:1 gears? |
01-24-2015, 09:56 PM | #4 |
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Location: Noxon, MT
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Re: TT truck,what were rearend ratios?
You might have to pull the plugs, jack up the rear and hand crank the motor trans in high and count the tire rotations. That will give you the ratio. PK
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01-25-2015, 01:22 PM | #5 |
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Re: TT truck,what were rearend ratios?
Yes, I guess that would work in some instances. But when someone is looking at TT rear ends that have been out of the truck for 50 or more years, and maybe are not all there, it would be nice if there were an easier way. Just saying.
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01-25-2015, 09:53 PM | #6 |
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Re: TT truck,what were rearend ratios?
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'OSO HANDY RESTORATIONS Specializing in Model T Fords 320-293-1953 |
01-25-2015, 11:18 PM | #7 |
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Location: Auburn, Ca.
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Re: TT truck,what were rearend ratios?
You can remove the four bolt cover on the back end of the housing, remove the big nut, thrust bearing, and the rear roller bearing. Then you can peek in with a pen light and count the teeth on the worm gear. Four teeth is low speed, about 7.5:1. Six teeth is high speed, about 5.25:1. A TT with high speed gears and an overdrive auxiliary trans will easily make 40 MPH or better with a properly tuned engine. I have been well over 50 in my dump truck.
Erik |
01-26-2015, 07:03 AM | #8 |
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Re: TT truck,what were rearend ratios?
I'm contemplating using the martin-perry frame extension and TT rear on the back of an A chassis for a static display. It would only see parade use. I just can't junk the M-P conversion. It would be like something built with leftovers in early '28. The TT C cab is saveable,I have a good T hood and radiator with shell. Need front '28-'29 fenders. I have a '29 engine with a accessory T waterpump already installed. Henry used leftovers so why can't I?
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01-26-2015, 11:27 AM | #9 |
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Re: TT truck,what were rearend ratios?
I thought a 1929 (A) engine came from the factory with an "A" water pump
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01-26-2015, 05:26 PM | #10 |
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Re: TT truck,what were rearend ratios?
Willie,they did. I changed to go to a flat belt as part of antiqueing the look while the engine was in a modified.
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01-26-2015, 11:50 PM | #11 | |
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Re: TT truck,what were rearend ratios?
Quote:
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01-26-2015, 11:53 PM | #12 |
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Location: Idaho
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Re: TT truck,what were rearend ratios?
oh, Yeah, what if the rear end on the TT is a Ruxtell rear end??? Are those lower gearing or higher gearing?
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01-27-2015, 12:40 AM | #13 |
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Location: Auburn, Ca.
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Re: TT truck,what were rearend ratios?
The Ruckstell is an underdrive. It gives you an intermediate gear between Ford low and high. When it is in high gear the T operates the same as if the Ruckstell were not there.
Erik |
01-27-2015, 12:37 PM | #14 |
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Location: Idaho
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Re: TT truck,what were rearend ratios?
Erik, have you posted any pictures of your TT truck on this or other sites? If so, let me know where, please. If not, it would be great if you did.
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