Search the web all over and can’t get the internal diameter of a Dayton Wheel.

I want to drill out the rivets and weld my widow maker centers into a Dayton centerless rim. I need to get the right size wheel for this to fit.
I found that a 22.5 tubeless and a 20” tubed Dayton will fit the same spider hub.
What is the spider hub diameter?

 

The Dayton style demountable rim inside diameter at the drop center is 19.5”. That should be the same measurement as the outside diameter of your RH-5° center disc. I’ll see if I can find a chart for that and will edit to add it.

Edit - the Firestone RH-5° charts don’t show the exact inside diameters of the various sizes. They simply show “nominal diameter”. Stu

Edit/Edit: as I re-read your question I’m not sure this is what you’ve asked for. But I think it’s the info you need. Besides, the mating surfaces of the Dayton spokes are not flat. They have 28° chamfers at their inner edges to seat the inner duals or single front rims. You are gonna mount your centers along the drop centers on the new rims which eliminates concern about the 28° chamfers at the rim edges. Stu

Goodyear / Motor Wheel:



Firestone Accuride:

 

Let’s beat this dead horse one more time. If it’s been your intention to mount your centers out on the edges of the rims (ledge welded), you can forget about that. To do what you are aiming at you’re limited to the “well welded”, or “conventional”, attachment along the drop centers of the rims. Stu

Edit: since dumping Photobucket the images there aren’t easily available. So I’ll try to edit in current pics when I can. I’ll have to refind the well weld/edge weld diagram and will come back to add it. Stu

 

Thank you Stu,
That is exactly the chart I have been looking for. The Widow maker center section is hard to measure with it in the rim, but at first check it looks very close.

Your tire/rim/wheel/ truck/ *** / *** / ***. !!!! knowledge is impressive. Thanks again for helping keep more old trucks rolling.

Douglas

 

If I were to do this would i be able to use the centers out of my goodyear K-26 rims.
I have 2 of them and want to have backups if i wreck a rim center on my Rh-5 rims.
I have 2 K-26 rims and 6 RH-5 rims.
Also would like to make a spare rim as well.

 

Should be the same as the RH-5°. The Goodyear K-28 is a flat based true split rim. The 28 stands for the 28° mounting angle of the Dayton style spokes. The 20” widow maker RH-5° mounted its center to the similar flat surface of its base rim. Stu

 

My rim that i think is a k28 has a slot in the rim halfway through for the valve stem to slide into.

 

like this

 

Right. That is the distinctive feature of the K-28. Back in the 1970s it was on the recall fast track along with the RH-5°, then the recall effort got shelved in 1980 when there was a change of government leadership. Industry prevailed, and OSHA mandated only wall charts and more training.

Edit - but as I think on this I think the K-28 was only a Dayton type application. If yours have center discs how do the rims flex to release the rings? Stu

 

Yeah my heart sank when i saw that because i thought i had 2 safe rims, ugghhh...

 

I dont have any clue how they flex, but they are not homemade and they say either firestone or goodyear on them but i cant remember.