AB driveshaft horse trading

[Mark75H]

Dave S has a 25ss driveshaft and wants a Q (or an H as second choice)

Dave also wants usable gears 1:1 or 16:21

I have an H and want a cut off AB driveshaft

If you have a good cut off AB and want a 25ss or H shaft, let us know before we get out the hacksaw :eek:

[JohnsonM50]

Theres a guy on the aomci d.board offering AB driveshats, new and reasonable.

[Skoontz]

Is there any way we could find the grade of steel these shafts are made out of? There are a few machinists who will/can cut the splines you would need out of brand new stock without butching a good stock shaft, but the steel grade is in question....I have a guy who will do A shafts for $60.00 but we don't know the steel grade....

[mac19f]

Sam, sent you a pm.

[Mark75H]

They are 4620 that has been ground to size on the bearing journals and hardened. Ron is selling them for $160 including shipping. I can not imagine correctly doing all the cutting, grinding and hardening for any less

[mercguy]

They are 4620 that has been ground to size on the bearing journals and hardened. Ron is selling them for $160 including shipping. I can not imagine correctly doing all the cutting, grinding and hardening for any less


at $160 that is a STEAL! Especially since the cutter required to cut the driveshaft splines costs more than $300 itself (well that is what Sid Bass told me he payed for the cutter to cut the splines for the Tohatsu DSH shafts he makes.). If someone could only charge $60 or so dollars, he would be taking a huge loss in time and parts!

[Skoontz]

you have to buy a 20' length of 4620, the diameter you need, which, runs into the $350.00 mark, =,-. The machine costs, was per end...So, that would be $120.00 and is an estimate, but these guys usually are pretty close when they have quoted me.

The same would apply to any driveshaft. Now in the case of an A motor, where it is hard to find race ready, if you got the right year, rather than hacking a good obsolete stock shaft, it might be a good option.

[Mark75H]

you have to buy a 20' length of 4620, the diameter you need, which, runs into the $350.00 mark, =,-. The machine costs, was per end...So, that would be $120.00 and is an estimate, but these guys usually are pretty close when they have quoted me.

The same would apply to any driveshaft. Now in the case of an A motor, where it is hard to find race ready, if you got the right year, rather than hacking a good obsolete stock shaft, it might be a good option.

There's more work to the shafts than just splining the ends ... they are not the same diameter all the way down ... $120 to pop the ends ... you'd pay that much again without the hardening to have the rest of the cuts ... your shaft is getting more expensive as it goes ... :)

[Skoontz]

I'm getting the picture, Sam....I'm getting the picture. So the $160 quoted earlier was a heck of a deal as stated!

[RogerH]

I have a friend in TN who just made one for his 20H. He's been making repro parts for Corvettes for years and knows how to do it correct. Take a look at eBay item # 130133104907.

I know that Ronnie has logged over 3 hours of run time on two different 20H's and checked the dimensions / condition of the shaft (especially at the "GB" bearing point). I personally helped to put some of the time on the shaft on a "B" Sid. (Never too old to help a friend out!)

I see he has a Buy It Now for $149. This looked like an excellent piece to me!
Roger Hinsdale

[crankbearing]

Have you guys looked at the drawings for shafts. I have been down this road and the back yard one's may last a while. The material is one thing and the actual part is another. There are grooves and rads and undercuts etc, there are three angles in the pinion splines (These were EDM'd originally). Now you may pull that off with a woodruff cutter then you have to harden it on both ends. 66-69 RC C scale on the pinion end including Bearing surface. 4620 is a B material - The shafts were done with 6720 A-A.

The new 44 and 25 shafts are Stainless. 4517 or 7415 Material I cannot
recall

Regards,

[Skoontz]

OMC had been given some type of award for thier driveshaft making machine. As I recall, the material came off a roll, was straightened out in process, then a huge pair of broaches slammed down, and simultaniously cut and splined the shafts. The award was given because the machine reduced scrap/waste to nothing, So, the splined ends were not heat hardened, they were made denser through the process of steel compaction.

I think I was 11 or 12 when I went through the plant with dad and Mr. Eppel.

[mercmack]

Some Guy Has Some Goodes On E-bay..worth The Look..
No..270146766939.....