Bevel gear rear end

AA Ford Discussion Group relating to the repair and restoration of your AA Ford.
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Jeff Brown
Posts: 105
Joined: May 26th, 2016, 9:57 am
Body Type: 82-A
Model Year: 1929
Location: Tucson AZ

Bevel gear rear end

Post by Jeff Brown » March 28th, 2017, 7:47 pm

Hi,

Have just pulled apart the 30/31 diff on the '29 truck I am working on - yes I know it is a real bitsa! The bevel gears are quite pitted over about half the teeth- looks like there may have been water in the diff at some time. Seeing as how I will have to replace the gears, how difficult is it to fit the 5.14 ratio gears in place of the current 6.6 ratio. I did a search on this forum to see if there were any answers but could not find anything - not even sure there are any 5.14 gears available. Any info appreciated.

Thanks

Jeff

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Chris Haynes
Posts: 2083
Joined: September 7th, 2003, 5:18 pm
Body Type: 82A
Model Year: 1930
Location: North Hills, CA/ Pine Grove, CA

Re: Bevel gear rear end

Post by Chris Haynes » March 29th, 2017, 9:00 am

For what it worth the same rear end with the 5:14 gears was used in WWII Scout Cars. This is a vehicle that looks like a Half track but has wheels instead of tracks.

Bob C
Posts: 1279
Joined: April 24th, 2003, 11:50 am
Body Type: Mail truck, Stake tr
Model Year: 1931
Location: SO CAL

Re: Bevel gear rear end

Post by Bob C » March 29th, 2017, 12:57 pm

I think the ring gear would work but they changed the pinion gear in 1932 and again in late 1934.

Bob

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AAholic
Posts: 249
Joined: October 27th, 2010, 7:24 pm
Body Type: 88-A
Model Year: 1931
Location: N.E.Illinois

Re: Bevel gear rear end

Post by AAholic » March 29th, 2017, 6:15 pm

someone correct me if I'm wrong but I think the standard (6.6) and high speed (5.14) gear sets (ring and pinion) are interchangeable. the axel and drive shafts are all the same, you would also need the correct speedometer drive and driven gears, There are high speed rear ends out, they are (were) stamped 7-36 on the lower rear edge of the housing flange, they also had a tag. the standard (6.6) were not stamped.
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macswoods
Posts: 280
Joined: May 4th, 2009, 1:20 pm
Body Type: 82-A
Model Year: 1929
Location: Wilhoit, Arizona

Re: Bevel gear rear end

Post by macswoods » March 30th, 2017, 10:08 am

Hello, another person with a bevel rear end in a 29 truck. Mine is a October truck think it was just when the change was made. But it still has the car front end , also a 4 speed in it. Maybe things got changed a long time ago. Mac...

Jeff Brown
Posts: 105
Joined: May 26th, 2016, 9:57 am
Body Type: 82-A
Model Year: 1929
Location: Tucson AZ

Re: Bevel gear rear end

Post by Jeff Brown » March 30th, 2017, 11:15 am

Yep, mine has the car front end and gets steadily newer as you go to the rear!. 4 speed tranny also. Everything absolutely worn out and corroded, especially the springs, but I'm getting there.

Jeff

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AAholic
Posts: 249
Joined: October 27th, 2010, 7:24 pm
Body Type: 88-A
Model Year: 1931
Location: N.E.Illinois

Re: Bevel gear rear end

Post by AAholic » March 30th, 2017, 11:56 am

Iv'e lots of spare AA parts available if you need them.
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AAholic
Posts: 249
Joined: October 27th, 2010, 7:24 pm
Body Type: 88-A
Model Year: 1931
Location: N.E.Illinois

Re: Bevel gear rear end

Post by AAholic » March 30th, 2017, 11:59 am

more parts
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AAholic
Posts: 249
Joined: October 27th, 2010, 7:24 pm
Body Type: 88-A
Model Year: 1931
Location: N.E.Illinois

Re: Bevel gear rear end

Post by AAholic » March 30th, 2017, 12:00 pm

even more parts
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AAholic
Posts: 249
Joined: October 27th, 2010, 7:24 pm
Body Type: 88-A
Model Year: 1931
Location: N.E.Illinois

Re: Bevel gear rear end

Post by AAholic » March 30th, 2017, 12:13 pm

but wait there's more
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Stakebed
Posts: 1187
Joined: June 14th, 2007, 7:29 pm
Body Type: Grainbox
Model Year: 1929
Location: Illinois

Re: Bevel gear rear end

Post by Stakebed » March 30th, 2017, 12:31 pm

I've got a small collection of parts as well. Alot of worm drive brake components.

Jeff Brown
Posts: 105
Joined: May 26th, 2016, 9:57 am
Body Type: 82-A
Model Year: 1929
Location: Tucson AZ

Re: Bevel gear rear end

Post by Jeff Brown » March 30th, 2017, 4:00 pm

Wow, thanks guys, I'll put together a list of what I'm going to be needing and get back to you.

Jeff

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gunmetal 2
Posts: 210
Joined: April 1st, 2013, 12:51 pm
Body Type: 82-A
Model Year: 1929

Re: Bevel gear rear end

Post by gunmetal 2 » March 30th, 2017, 6:48 pm

Do you have the universal joint for drive shaft to rear end. [worm gear rear end] 6 to 10 spline [ I think thats right.] My e-mail address is 1929oldlady@gmail.com . or 574-221-1475 mine is wor out.

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AAholic
Posts: 249
Joined: October 27th, 2010, 7:24 pm
Body Type: 88-A
Model Year: 1931
Location: N.E.Illinois

Re: Bevel gear rear end

Post by AAholic » March 30th, 2017, 7:21 pm

I do not have any 6-10 u-joints at this time.

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