The Ford Barn

dlevy · 01-06-2023, 12:09 AM

Hi,

I have this drive shaft which I had originally bought thinking it might be for my Model AA truck, but it is much too big.

Can anyone give me some help identifying what it is for (I wrote the "BB" on it, but not sure that is right)?

Thanks,
Dave

Bob C · 01-06-2023, 12:19 PM

Sure looks like BB, the AA is 1 1/4" and the BB is 1 3/8".

dlevy · 01-07-2023, 12:10 AM

Thank you Bob.

Could I trouble you for your thoughts on value? It is NOS.

Dave

john charlton · 01-07-2023, 05:12 AM

The original set up for the 30/31 AA truck had the male/female muff coupling . There was a male gear on the transmission output shaft . The intermediate shaft had a female gear end . This acted as an universal joint (sort of ) . The gear connection was prone to wear and would strip leading to no transmission at all . In late 31 Ford brought out a heavier intermediate shaft with a universal joint at each end with a special rear output bearing retainer . This new setup was fitted to the BB trucks as well . What you have is highly sought after as the original setup in the AA truck has a high failure rate .

John in cloudy morning Suffolk County England .

Juggler · 01-07-2023, 06:52 AM

From your pics it looks like you are missing the rear transmission bearing retainer (part no AA 7085 B). This is different from the pressed steel unit which goes with the muff coupling.

My Dad (John Charlton above) has these here in England, but Sammy Guthrie of Arizona Model A will have a used one in stock. Advertise this set up on the Ford AA Truck site on FaceBook. Your telephone will not stop ringing.

Andrew sitting next to John in same place same weather

john charlton · 01-07-2023, 08:01 AM

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Thinking about it one U/J should be BB 7088 Front and BB 7090 B Rear . This is a two piece U/J two halves bolted together ( 6 wired bolts} You do not have the take apart style . This U/J allowed the intermediate shaft to be removed without pulling the rear axle back quicker clutch change . Hopefully Neil Wilson can tell you what variant you have .

John in same place same weather .

01-06-2023, 12:19 PM	#2
Bob C Senior Member Join Date: May 2010 Location: So Cal Posts: 8,754	Re: Drive Shaft ID Help Requested Sure looks like BB, the AA is 1 1/4" and the BB is 1 3/8".

01-07-2023, 12:10 AM	#3
dlevy Junior Member Join Date: Feb 2019 Posts: 14	Re: Drive Shaft ID Help Requested Thank you Bob. Could I trouble you for your thoughts on value? It is NOS. Dave

01-07-2023, 05:12 AM	#4
john charlton Senior Member Join Date: May 2010 Posts: 1,304	Re: Drive Shaft ID Help Requested The original set up for the 30/31 AA truck had the male/female muff coupling . There was a male gear on the transmission output shaft . The intermediate shaft had a female gear end . This acted as an universal joint (sort of ) . The gear connection was prone to wear and would strip leading to no transmission at all . In late 31 Ford brought out a heavier intermediate shaft with a universal joint at each end with a special rear output bearing retainer . This new setup was fitted to the BB trucks as well . What you have is highly sought after as the original setup in the AA truck has a high failure rate . John in cloudy morning Suffolk County England .

01-07-2023, 08:01 AM	#6
john charlton Senior Member Join Date: May 2010 Posts: 1,304	Re: Drive Shaft ID Help Requested Sponsored Links (Register now to hide all advertisements) Thinking about it one U/J should be BB 7088 Front and BB 7090 B Rear . This is a two piece U/J two halves bolted together ( 6 wired bolts} You do not have the take apart style . This U/J allowed the intermediate shaft to be removed without pulling the rear axle back quicker clutch change . Hopefully Neil Wilson can tell you what variant you have . John in same place same weather .