AA speedometer gear

[oldscratch]

Hello I have a 1931 AA Dump Does anyone know where I can find a speed-o gear for it? It is marked 666, I have found aftermarket gears for the higher ratio but not the 666. This is the gear that attaches to the cable. I'm not sure about the worm gear yet. Thanks

[Bradshaw]

OldScratch,
I have a matched pair from an Early 30 AA truck. Speedo driven gear has slot, the drive
Gear has 10 splines. $100 for the matched pair pulled from my truck when I upgraded
To 5.14 gears. $5.95 priority mail flat rate shipping. Total $105.95. I accept postal money
Orders or PayPal. I Dont want to separate the set, as they are a mated pair. If interested send me your phone number or email by pm, and I can send the pics to your phone or email, trouble uploading pics here. Bradshaw

[gunmetal 2]

Bradsaw,
Do you have any for 29 worm gear the high speed? If not Thank you. I you do how much. or what gear does it take.

[Bradshaw]

Gunmetal2,

I believe the 29 worm gear high speed ratio was 5.17:1.

Had a set of rear gears, driveshaft gear/speedo gear but sold them long ago.

Bradshaw

[oldscratch]

I would like to see pictures of what you have. How many teeth are on your driven gear? Thanks My Email is jdedwardsjr@gmail.com

[Bradshaw]

Email sent with pictures attached. Bradshaw

[gunmetal 2]

This is a pic of the gears. My gears will be sent e-mail to you.jdedwardsjr@gmail.com

[oldscratch]

My driven gear doesn't have a slot it has a squared crimp on the end. Do you know if it will work I think it should if I replace both as A set. I would also have to use a different cable. Looking at Gunmetal 2 pictures my driven gear looks like the AA-17271-G

[Bob C]

There are two different 6.6 gears. AA-17271-FR 1929-30 and AA-17271-G (later BB-17271-A) 1930-31.
I assume the first one is for the oval speedometer and the second one is for the round speedometer.

Bob

[Drew Mashburn]

All:

Years ago, I had a driveline (torque tube) that still had the speedometer gear mounted inside of it. It was a good gear because I had removed it to see what condition it was in. I put it back into the driveline. I must have set the drivelind down too hard because it broke a tooth off of the speedometer gear. So, guys, be careful than I was should you ever set your drivelines down with the gear in them.

Live and learn!
-- Drew

[Bradshaw]

The driven gear in the set I have looks like the AA-17271-G as well, but there is no square on the small end.

I'm not 100% sure about my gears working for you, maybe someone else will chime in.

As you said, these two gears, and a new cable to fit the slot would work and get you to the speedometer, but I don't know if the speedometer ends were the same.

It's here for you if you decide you need it.

Bradshaw

[Neil Wilson]

In the Double A'er (2007) there is an article titled “AA Speedometer Gears & Parts” (April 2007) by Neil Wilson (5 pages). That will provide information to use.