BTX24 mid PTO generator drive question

[Skyco]

Hi All, New here, just picked up my BX24 last week and I'm thrilled with it
I have one of those Harbor Freight 10Kw generator heads I'd like to adapt to run off the middle PTO on the BX24.
Ya'll can spare me all the discussion about whether it is appropriate to run a gen head off a tractor versus a stand alone unit- Already read that thread Yes I already own several stand-alone gasoline generators but I want a diesel powered one
I don't want to take the backhoe off hence the desire to run it with a belt perhaps off the center PTO, already have the oddball adapter to convert it to 6 spline on order.

So- anyone succesfully done this?

Al

 

[fishpick]

First thing that jumps to mind is you are going to need some sort of reducer gearing - since most of those jobbies are for a 540 RMP rear not a fast 2500 RMP mid...

Secondly - you do realize that to get the correct RMPs for the 60Hz you need to run the tractor pretty fast - like - 540 at the rear is 3068RPM on the tach, and 2500 Mid PTO is 3125 RPM...

 

[bird1968]

Secondly - you do realize that to get the correct RMPs for the 60Hz you need to run the tractor pretty fast - like - 540 at the rear is 3068RPM on the tach, and 2500 Mid PTO is 3125 RPM...

You may want to run this setup at the Mid PTO, I'm trying to finish my hydralic pump project this fall, I'll keep you guys posted on the results.

Bird

 

[Skyco]

First thing that jumps to mind is you are going to need some sort of reducer gearing - since most of those jobbies are for a 540 RMP rear not a fast 2500 RMP mid...

Secondly - you do realize that to get the correct RMPs for the 60Hz you need to run the tractor pretty fast - like - 540 at the rear is 3068RPM on the tach, and 2500 Mid PTO is 3125 RPM...

Actually I need to step the speed UP, it is a 3600 RPM generator, I figured I might run the mid PTO at 1800 with a 2x speed increase via belt/pulley to the generator. Besides not wanting to remove the backhoe to use the rear PTO I don't want to step the speed up some 6.6X if I use that PTO

Bird1968- your setup is something like I'm envisioning....

 

[Singlecoil]

You may want to run this setup at the Mid PTO, I'm trying to finish my hydralic pump project this fall, I'll keep you guys posted on the results.

Bird

No way! If you are telling me you are working on a way to get increased fluid volume to the backhoe on the BX's then I think you are going to have another bro-tek must have device on your hands.

 

[Skyco]

Hey Bird-

How did you attach the drive pulley to the PTO shaft?

 

[bird1968]

Hey Bird-

How did you attach the drive pulley to the PTO shaft?

You can buy a factory coupler & adapt a shaft to your pulley.

At the pulley end, a pillow block, bolted to the skid plate, will hold the pulley.

Bird

 

[Skyco]

Tracked down the part numbers for the factory coupler and it is $151
The whole shaft is $221 - I didn't pay much more than that for the whole freaking generator
I think I'll dig deeper into using generic parts and the adapter sleeve that is about $25.

 

[tommu56]

Skyco

I would double check front pto speed I think its like 3/4 engine speed.

like 2000 at engine, the rear is 540 at engine speed

i was thinking of doing doing some thing like that too

but its just a though at this time

tomm

 

[KeithInSpace]

I'm not sure you'd actually get 10kW out of the generator head. There is a ratio you use to run a standard 540 RPM PTO unit...it is something like 2 PTO Hp per 1,000 W or something...it ends up that a PTO driven unit (with the 16 PTO Hp available at the rear of a BX2230) can only turn an 8 or so kW generator.

I guess by running it through the reductions in the tractor itself to get to the Mid PTO then through the 2x gear to get it up to speed, you'll have even more mechanical/gear losses. Also, you won't be able to run the engine at peak output RPMs to get the rotations right. Good at saving the engine, bad at producing power to run the generator.

This all conspires to make me fearful that you'd be lucky to get more than 6 or 7 kW out of your generator head.

But if that's all you planned on, I guess your cool.