From vertical to horizontal - proposed engine swap!?

[NormL]

I would use gear pulleys and belt.

My curiosity is piqued; what's a "gear pulley"?

 

[FastEddieR]

how about toothed belts and matching pulleys? Or ribbed, more surface area to avoid slippage.

 

[workinonit]

Like this with a cogged belt. I once worked for Dayco that makes these and all types of belts. Basically they are zero slip. I suppose they can jump a tooth but not common.

 

[NormL]

View attachment 714067
Like this with a cogged belt. I once worked for Dayco that makes these and all types of belts. Basically they are zero slip. I suppose they can jump a tooth but not common.

OK!! That is the kind of drive setup I have on my bandsaw. The belt shredded and I've not been able to locate a new one for it. Good thing my SIL lives next door and he's got a much better saw I can borrow when needed. I can see that working in my situation but since I have the engine to swap in to replace the old one, I'm going that route. Cost is a big factor here and has been throughout the project. I will, however, keep the gear pulley in mind for any future project where belt slippage could be a problem. Thank you for this!!

 

[dstig1]

Yeah a toothed belt like a timing belt or a chain drive would both give you much more positive engagement and should eliminate the slippage. I know you said cost is a big issue, but if it remains non-functional then it costs you 100% of what you have into it for zero return...

 

[lennyzx11]

A timing chain and gear set from a small block Chevy is cheap and could be welded to the pulleys you have. Maybe a six cylinder set for longer length?
They are 2:1 ratio like you have. And can withstand high rpms.

I was going to say roller chain from Tractor supply but I think that’s rated a lot lower rpm than what you want for a hyd pump to spin at.

 

[lennyzx11]

You are right about side load and my pump will not allow it. My present mount takes that into account so it is in good shape for mounting directly. I'll have to open it up and change the rotation back to factory before I do that!! The biggest problem I see to double belt the present setup is the way the pulley on the engine is mounted to the output shaft. It looks like it was on there from the factory and intended to be permanently attached. Keep in mind this is a garden tractor that came with a mower deck and the pulley I have been using to run the pump was the drive pulley to that deck.

You state you are using a belt drive but your pump doesn’t allow side load.

How is this possible (no side load) with a belt drive setup if I may ask?

 

[NormL]

You state you are using a belt drive but your pump doesn’t allow side load.

How is this possible (no side load) with a belt drive setup if I may ask?

Good question and I did it by mounting the drive shaft for the pump through two pillow blocks. The ten inch pulley at one end and a lovejoy set at the pump end. The bracket holding the pillow blocks also holds the pump. Lots of careful fabricating involved but that part of my build turned out well. The slippage was at the pulley off the engine and no amount of belt tightening was helping. BTW, those pulleys are the cheap stamped sheetmetal type and I suspect are part of the problem.

 

[NormL]

Okay, here's where the project stands so far: old engine out, horizontal shaft engine standing approximately where it will get bolted down. Next will be removing the hydraulic pump and all the mounting bits described in the above post. I'll not toss them too far; they are sure to be useful somewhere else, perhaps as part of the bracket to hold the pump in its next position!! The scariest part of all is getting the clutch pulleys and other idlers properly repositioned below the engine platform. There simply is not a lot of room for mistakes down there!!

 

[NormL]

Okay, here's where the project stands so far: old engine out, horizontal shaft engine standing approximately where it will get bolted down. Next will be removing the hydraulic pump and all the mounting bits described in the above post. I'll not toss them too far; they are sure to be useful somewhere else, perhaps as part of the bracket to hold the pump in its next position!! The scariest part of all is getting the clutch pulleys and other idlers properly repositioned below the engine platform. There simply is not a lot of room for mistakes down there!!

It took me eleven days of a few hours here and there to complete the conversion and try it out!! The difference in the performance is like night and day. The engine actually has to grunt when I give it work. And I made it work today. The ground I'm digging is drought dry and hard and this poor little digger is barely able to shovel even a shallow trench. I'm trenching from my pond back to a sump I have some fifty feet out so I can bury the discharge pipe. That's just one of the tasks I have had waiting for this machine. The transplant has been a success as now I'm able to finally use this machine.