Coop381 Posted May 17, 2020 Share Posted May 17, 2020 (edited) I have a 78 686ST that someone had cut down to a single axle dump. It has the old style Dayton hubs pretty sure 26000 six bolt axle cap with hump on it 4:25 ratio would like some direction on where to find parts to convert to pilot hub buds. Edited May 20, 2020 by Coop381 Quote Link to comment https://www.bigmacktrucks.com/topic/62577-78-r-model-hub-swap/ Share on other sites More sharing options...
j hancock Posted May 18, 2020 Share Posted May 18, 2020 I would get an entire hub pilot axle assembly and do a swap. 1 Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/62577-78-r-model-hub-swap/#findComment-451438 Share on other sites More sharing options...
theakerstwo Posted May 18, 2020 Share Posted May 18, 2020 If you found budd hubs that would work on that axle it would be inter board hubs. Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/62577-78-r-model-hub-swap/#findComment-451442 Share on other sites More sharing options...
Coop381 Posted May 18, 2020 Author Share Posted May 18, 2020 Ok next question. What will fit with out extensive mods? Eaton, newer Mack, Rockwell. Quote Link to comment https://www.bigmacktrucks.com/topic/62577-78-r-model-hub-swap/#findComment-451463 Share on other sites More sharing options...
j hancock Posted May 18, 2020 Share Posted May 18, 2020 I would try to locate a Mack axle first. If my local used truck parts yard had a smoking deal on something else, then would have to balance out my time vs money. Truth be know, I would stick with the spokes. Daytons are typically stronger than Budd's, easier to change in the field with hand tools and look better on a dump truck IMO. 1 Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/62577-78-r-model-hub-swap/#findComment-451486 Share on other sites More sharing options...
theakerstwo Posted May 18, 2020 Share Posted May 18, 2020 2 hours ago, j hancock said: I would try to locate a Mack axle first. If my local used truck parts yard had a smoking deal on something else, then would have to balance out my time vs money. Truth be know, I would stick with the spokes. Daytons are typically stronger than Budd's, easier to change in the field with hand tools and look better on a dump truck IMO. Only thing i dont like about dayton is the drums on mine cost about 1400.00 for 4 of them.They last about 3years and they were webb brand.I had to waite about 2 weeks for webb to build some. Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/62577-78-r-model-hub-swap/#findComment-451496 Share on other sites More sharing options...
j hancock Posted May 19, 2020 Share Posted May 19, 2020 Yup, some drums are getting pricey. Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/62577-78-r-model-hub-swap/#findComment-451506 Share on other sites More sharing options...
jeff20878 Posted May 19, 2020 Share Posted May 19, 2020 Spoke wheels too...my 4 new spoke wheels for the rears were $1,200 each from Mack. Quote Link to comment https://www.bigmacktrucks.com/topic/62577-78-r-model-hub-swap/#findComment-451511 Share on other sites More sharing options...
Coop381 Posted May 20, 2020 Author Share Posted May 20, 2020 (edited) ok update on 78 hub conversion got a little more info on rear, its a CRD117 4.25 ratio takes a 758 bearing with a 452 race & a 598 bearing with a 592A race. anybody have any idea where to find pilot hubs for this rear I have made dozens of calls no luck so far any help would be appreciated. Edited May 20, 2020 by Coop381 Quote Link to comment https://www.bigmacktrucks.com/topic/62577-78-r-model-hub-swap/#findComment-451582 Share on other sites More sharing options...
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