Steering wheel & shaft taper ?

[ActionYobbo]

What’s the taper size or number for the sheering shaft on a 39 truck. I got a banjo steering wheel from a 39 car but it won’t fit the taper is different. I need to buy a tapered reamer and “fit” this steering wheel.

[cas3]

From my experience, The model A shaft and taper is bigger, but 32 until they went to splines they are all the same. No idea when that occurred

[Tim Ayers]

Curious if it's the same 7 degree taper as spindles to keep machining and tooling down or consistent while on the line. Hopefully someone knows for sure.

[Newc]

Real TRKs shafts are larger than cars, I remember. Newc

[Mart]

It's a 5 degree taper. Some heavier trucks use a bigger diameter.

[ActionYobbo]

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Originally Posted by Mart

It's a 5 degree taper. Some heavier trucks use a bigger diameter.

On the steering wheels the small end of the hole is the same size and the big ends of the holes are different sizes. The holes are the same depth so the tapers must be different.

[Zeke3]

It sounds like you have all the information to calculate the taper, you just need someone to do the trigonometry for you.

[ActionYobbo]

I thought I would ask on here and save some guess work. A reamer that size is a bit spendy so I wanted to be sure before I order one. Looks like I will visit some machine shops with both steering wheels and see if someone has a reamer or a way of cutting the required taper.

[Ggmac]

Someone with a lathe , an off set tail stock and some cutting , hardening should be able to rig up a home made cutter .