Looking for a high speed worm # AA-4210-B

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DBF 29
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Looking for a high speed worm # AA-4210-B

Post by DBF 29 » July 10th, 2019, 4:43 pm

Hi, I am looking for a high speed worm for my 29 AA truck. I ran across a NOS high speed brass worm gear. It has never been installed, no wear marks anyplace on the gear. Hard to believe it survived sitting in a box for 90 years. So I am looking for a high speed worm gear in good condition. The high speed worm has 6 splines vs 4 splines on the slow speed worm. E-mail is rockcreek6@aol.com.
Thanks

Bob C
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Re: Looking for a high speed worm # AA-4210-B

Post by Bob C » July 10th, 2019, 5:30 pm

So you have the brass gear AA-4210-B and you are looking for the Worm AA-4610-B is that right??

Bob

DBF 29
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Joined: April 23rd, 2013, 2:09 pm
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Location: Kansas City, Missouri

Re: Looking for a high speed worm # AA-4210-B

Post by DBF 29 » July 11th, 2019, 8:42 am

What I have is the 31 tooth brass worm gear. What I need is the high speed steel worm screw which according to Neil Wilsons web site has 6 spiral teeth and has a part number of AA-4210-B. looking for the 5.17:1 gear ratio worm that is a match for the 31 tooth brass worm gear. I currently have a low speed worm rear axel in my 29 AA and want to make it a high speed rear axel. The only part numbers I have come from Neil Wilson's AA website. I am unfamiliar with the part number you posted.

Please feel free to educate me if my information is incomplete or wrong. Also I am assuming that the worm and worm gear are the same for trucks with and without emergency brakes.

Thanks!

DBF 29
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Re: Looking for a high speed worm # AA-4210-B

Post by DBF 29 » July 11th, 2019, 9:16 am

Ok, did a search of this web site and found a couple of postings by Neil Wilson referring to the high speed worm as part number AA-4610-B and the brass worm gear as AA-4210. However on his web site the picture of the steel worm has the numbers reversed. Not sure which is correct. Still looking for a high speed steel worm. Thanks!

bud valerius
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Re: Looking for a high speed worm # AA-4210-B

Post by bud valerius » July 11th, 2019, 12:43 pm

I have the gear that you are looking for. 6 tooth spiral steel gear Bud Valerius cell # 785 556 1763

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Neil Wilson
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Re: Looking for a high speed worm # AA-4610-B

Post by Neil Wilson » July 13th, 2019, 11:51 am

DBF 29 wrote:
July 11th, 2019, 9:16 am
Ok, did a search of this web site and found a couple of postings by Neil Wilson referring to the high speed worm as part number AA-4610-B and the brass worm gear as AA-4210. However on his web site the picture of the steel worm has the numbers reversed. Not sure which is correct. Still looking for a high speed steel worm. Thanks!
FYI - AAFords.com was in error (now corrected). The Worm (i.e. worm screw) is AA-4610-A or AA-4610-B. See https://aafords.com/aa-chassis/aa-4000-rear-axle/#wta
Regards, Neil Wilson
______________________________________
neil@aafords.com - use this email for contact
https://aafords.com/ - Ford Model AA Truck Club @ aafords.com

DBF 29
Posts: 5
Joined: April 23rd, 2013, 2:09 pm
Body Type: Platform
Model Year: 1929
Location: Kansas City, Missouri

Re: Looking for a high speed worm # AA-4210-B

Post by DBF 29 » July 15th, 2019, 4:53 pm

Thanks Neil, It makes sense now. The brass worm gear had a tag on it saying AA-4210-B and I was just assuming the tag had come from the worm screw. Now I know that the tag on the brass gear is correct.

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