Custom golf cart

[ebinmaine 67,500]

2 minutes ago, wallfish said:

It's a cool idea and not 100% sure it's exactly what he's getting at.

I get the impression HE'S not 100% sure what he's getting at!

[Pullstart 62,881]

I’ve wanted o do something similar for a LONG time!  Off road buggy style.  FWD transaxle turned sideways and used as a transfer case.  It would add a lot of gear reduction…

Edited September 30, 2022 by Pullstart

[wallfish 17,000]

3 minutes ago, Pullstart said:

 FWD transaxle turned sideways and used as a transfer case.

Like lock the pinions to power front and rear axles?

[Pullstart 62,881]

Just now, wallfish said:

Like lock the pinions to power front and rear axles?

yep.  Or leave ‘em open to make an “all wheel drive” modeled transfer case.

 

 

[wallfish 17,000]

4 minutes ago, Pullstart said:

Or leave ‘em open

I'd lock'm for off road. If a front tire slips it won't be sending power to the rears. Correct?

[Pullstart 62,881]

5 minutes ago, wallfish said:

I'd lock'm for off road. If a front tire slips it won't be sending power to the rears. Correct?

kind of,  you’d need both fronts slipping to loose all power.

[wallfish 17,000]

34 minutes ago, Pullstart said:

kind of,  you’d need both fronts slipping to loose all power.

I was picturing a diff used in the front and rear axles too

[Pullstart 62,881]

18 minutes ago, wallfish said:

I was picturing a diff used in the front and rear axles too

Yes.  I can’t imagine a situation where the entire front diff has no grip, or the entire rear.  So, the center power transmitter could potentially be “open” and not locked.  It would be easiest on the entire drivetrain if it were open in the center.

[wallfish 17,000]

This is what I was imagining. Say the whole thing is driven into deep slippery mud. Guessing about the possibility of only one tire getting power because of the diff slip.

Locking the transfer diff would put power to both front and rear but if it's open it has the potential to power only 1 tire.

Hope Oldskool doesn't mind us going off road on his thread

[Oldskool 6,644]

@wallfish you nailed it in your interpretation of my rambling 

[Oldskool 6,644]

10 hours ago, Pullstart said:

I’ve wanted o do something similar for a LONG time!  Off road buggy style.  FWD transaxle turned sideways and used as a transfer case.  It would add a lot of gear reduction…

Somewhere I have seen a Wheel Horse with an 8speed turned 90degree as a transfer case to run 2 Jeep axles. 

[Pullstart 62,881]

Yeah @wallfish I could see that.  I think through all the power transmission, that is easier said than done.  BUT there’s only one way to find out!

[Oldskool 6,644]

3 hours ago, wallfish said:

 

Hope Oldskool doesn't mind us going off road on his thread

 

Not at all. Go for it guys. 

[Handy Don 12,232]

17 hours ago, Oldskool said:

Tuff Torq K61-A hydro transmission

Just looked the specs on this here.

 

Specifications:

Transaxle Torque output .......................217 Ft. lbs.

Maximum Input Speed .......................... 3000 RPM

Reduction Ratio ................... 26.97:1

...

 

So at 3000 RPM input, the output speed is 3000 ÷ 26.97 = 111.23 rpm

I used this calculator to get the maximum output horsepower as 4.6 (regardless of input horsepower).

This means that this transmission can maximally apply 4.6 horsepower for motion, assuming no losses in the rest of the drive train.

 

I'd say this is borderline for driving a 1,000 lb vehicle at 20+ mph, depending a lot on the terrain and the surface being driven over.

 

[cafoose 3,355]

What about this idea

 

[Oldskool 6,644]

1 hour ago, Handy Don said:

I'd say this is borderline for driving a 1,000 lb vehicle at 20+ mph, depending a lot on the terrain and the surface being driven over.

 

Thanks Don for the calculations. Plus I guess there is the gear ratio of the sprockets along with the rear diff ratio turning  the 25to27in tires.

[Handy Don 12,232]

2 hours ago, Oldskool said:

Thanks Don for the calculations. Plus I guess there is the gear ratio of the sprockets along with the rear diff ratio turning  the 25to27in tires.

In the end, with the engine at 3000, you get 4.6 hp to work with. It is helpful that with a hydro, you can always have the full input revs available but the starting torque coming out will be lower at starting speed. It's a compromise between being able to start from a stop and reaching max speed since available torque is related to the hydro's output rotation speed (i.e. you don't get full torque at low output speeds).

 

Gearing to get up to 6-10 mph (i.e. chain sprockets to the drive shaft, the rear end differential, plus tire circumference) would probably work pretty well unless it's really muddy or hilly.

Gearing to get to 20 means maybe having not enough "ooomph" at low, starting off speeds.

 

A heavier hydro might be the ticket or, failing that, I'd give some thought to a torque converter a la snowmobiles or go-karts run through a geared transmission. You get no-clutch operation, speed ranges, and reverse. Heck, the front end from a compact, stick shift, front-wheel drive car (Ford Fiesta?) would even get you steering! 

Edited September 30, 2022 by Handy Don

[wallfish 17,000]

7 hours ago, Pullstart said:

BUT there’s only one way to find out!

Woo Hoo Does this mean there's a new project coming soon?

 

48 minutes ago, Handy Don said:

you get 4.6 hp to work with

I'm a little surprised those transmissions are that low of an output. 217 ft pounds I was thinking hydraulic stuff would have a little more torque

 

2 hours ago, cafoose said:

What about this idea

Did you do that cafoose? That kinda stuff is right up my alley

[19richie66 17,508]

9 hours ago, Oldskool said:

Somewhere I have seen a Wheel Horse with an 8speed turned 90degree as a transfer case to run 2 Jeep axles. 

I have seen a transmission turned sideways and used to drive a transmission by chain off the brake shaft. 
 

 

[Oldskool 6,644]

@19richie66 that's a cool video. Interesting use of a WH trans

[Pullstart 62,881]

 @19richie66 what a cool machine!  I just binge watched most of his videos about it!  

[19richie66 17,508]

47 minutes ago, Oldskool said:

@19richie66 that's a cool video. Interesting use of a WH trans

It’s very impressive. It gave me a similar idea but with a hydro and a three speed powerking transmission. If the measurements work out. 👍

Edited September 30, 2022 by 19richie66

[wallfish 17,000]

3 minutes ago, 19richie66 said:

gave me a similar idea but with a hydro and a three speed powerking transmission

Don't let @Handy Don ruin the inspiration with all of that fancy math and calculators he uses!

[cafoose 3,355]

2 hours ago, wallfish said:

Did you do that cafoose? That kinda stuff is right up my alley

No, it came up on my Facebook feed

[19richie66 17,508]

48 minutes ago, wallfish said:

Don't let @Handy Don ruin the inspiration with all of that fancy math and calculators he uses!

I have most of the parts…… just waiting to aquire the transplant subject.