Optional on D21.

Funny that you mention JI CASE, I was a hired hand on 2 dairy farms that ran all Case tractors from a RC to a 1070, the 530,630,730 had the foot throttle. I don't recall it on the 830/930 though . There was none on the 870 or the 1070 that I ran for them. Man, that was a LOOOONG time ago Lars yet seems like yesterday now that I think about it  !!

Those '30 series Case machines were almost bullet-proof in that era, the '70 series P/S; not so much 

A Decellerator pedal would probably be more useful in most circumstances... 

An accellerator would have to take the engine from low idle, up to some governed speed.  A Decellerator pedal drops it from whatever governed speed, down to idle...

I did farmerize one.

Here is the video

https://youtu.be/WB7A8BLpl6Y" rel="nofollow - https://youtu.be/WB7A8BLpl6Y

You mean like, .....taking your foot off the pedal?   Or, putting the throttle lever in the low position?  Been driving tractor for close to 50 years......never wished I could do that with a pedal, but I've used a foot throttle most days for the last 20+ years.

Hater... 

?

Not sure the angle you're coming from.....?

I've ran, oh.....5 or 6 different tractors with a foot throttle, and they all have had both a hand and foot throttle, not a foot throttle instead.  AND, they all have had the hand throttle act in a steady fixed position, but the foot throttle is spring returned like a car.  Would never use foot throttle doing field work, between the bumps and your reaction, things get pretty unstable!  But, for handling round bales, going across the yard, backing up to something sort of far away and covering the first part of the distance a little quicker.....there's lots of little things the foot throttle is handy for.

Sorry Dave, NOT talking about the CAT bulldozer  set-up  . Strictly a foot pedal that over-rides the hand throttle .
 

LMAO STEVIE !!!!  You're the guy that can't chew bubble gum and spit at the same time  !!! I'll bet you can't operate a "BOBCAT" brand skid steer with foot pedal boom/bucket controls either  !!!!

LMAO !!!! You said yourself you couldn't figure out the backhoe pedal !!!!

And, you left out 1/2 of my reply for some reason 

I re-read ALL of your replies to this topic, you NEVER said "NO REASON" on a backhoe  !!!

Gary Burnett wrote: ...My cars and trucks all have foot throttles did have a Model A Ford with a hand throttle one time.

All Model A Fords have hand throttle and foot throttle.  Hand throttle (opposite the spark advance lever) sets the throttle plate's minimum stop, it's not a governor.

IF a guy is using his tractor as a LOADER, then you're putting a foot throttle on a 'loader', which is different from just a 'tractor'.

The tractor's fundamental operation mode, is adjustable constant speed governance... you set the engine governance for PTO or gear/ground speed necessary for the implement operation being performed.

The cases of decel pedals noted above, are pretty much standard fare for groundworking applications like bulldozers, road grading, scrapers, etc., and the function is simple- you set the engine governance for working speed, and use the decel pedal for change of drive ratio or direction.

The function of a foot-throttle on a backhoe or excavator, is usually nothing more than the opposite of a decel pedal... the engine idles until you step on it, then the engine runs up to governed speed... whatever the hand lever is set to, OR (if it's a fixed-speed governor with idle) to the governor's preset speed.  This concept is also found in a 'variable flavor', where operating it at any point between idle and full goverend can be done... it is used on flightline baggage and aircraft tugs, forklifts, heavy trucks, mining vehicles, golf carts, telehandlers, articulating loaders, and most anything else that does lots of start-stop cycles.  I don't have one on my backhoe, and would never use it, the hydraulics need to be a constant speed in order to work smoothly.

IF one adds a foot-control feature to a governed industrial engine, the operation of the governor MUST be included in the operating concept, as you'll either be using the governor to limit top speed, or you'll be overriding the governor to pull the throttle down to some idle speed... because the third option (shoving the throttle to whatever speed you want) will make it very easy to overspeed the engine beyond the safe operating range of the mechanical governor, and you'll end up with a little grenade of governor bits looking for a path to the oil pump.

My Hines H-1600 tractor I use to cultivate with has something similar with the hydro drive.

I set the hydro speed with a hand lever and it has a foot pedal that can be use to slow down the speed or stop without moving the hydro lever.

Well, I was talking about tractors, not dozers.  

And some people just love to type.

Awesome Sauce!

And some cannot read.  Typing is a necessity, as is clarification.  Without clarification, technical discourse is moot. 

Case-in-point: Gary's Yanmar's operation is unique... his hand-throttle sets the MINIMUM run speed (which is what he uses in turns), and advances to full governed speed when depressed fully.  This is NOT the same as others.

The reason why I took the time to point out the operational modes and circumstances above, is simple:

Put a foot throttle pedal on your D- or 100-series floorboard.  Tie it to the throttle plate, and take it to the field... WHAT will it do?

You'll bring the hand-control to some speed, and the engine will come up to it, as usual.

Mash that pedal to the floor... what happens?

If it's a DIESEL, the engine will go up to the injection pump's full governed speed, and if the injection pump's internal governor can cut off fuel, it will run at that point, hopefully no faster.

In a gasser, the engine will increase in speed until either the running load's torque requirement exceeds the engine's torque output capability, and it will limit at that speed, or it will continue to increase speed until some component exceeds it's operational limits.

My only points here, are:

1) there are many concepts of 'foot throttle', they're not all the same, and

2) One does not just slap a pedal on the board and connect it, without considering exactly HOW it will operate, and without understanding how the engine's governance functions.

IF someone doesn't take these factors into consideration, the results can go very wrong, very quickly, with engines, driveline components, hydraullic components, and implements.

My TRUCK has a foot throttle... handy in town driving and around the farm.
 

That's the joy of my simple design (Copied from the 6000 series). The governor is not messed with, the hand throttle still works as intended, no over revving is possible because of the foot throttle.  

One of the main reasons I did mine was pulling out onto a road near our farm. It's a blind curve on a 55 mph road. You pull out with the fuel on and jamb the PD into high to get out as soon as you can. This way I can let off the throttle a bit while hitting high to lesson the shock load, then press for throttle until I am clear then I can advance the hand throttle as needed. That was my thinking....

Yea don't know where the idea of over riding the governor come from on all my tractors with a foot throttle it functions the same as a hand throttle.When I'm feeding hay with my Oliver 1365 I seldom use the hand throttle much easier to regulate speed with the foot throttle.Plus 3rd and 4th are synco so I change gears like driving a truck,would take 3 hands to drive,shift gears and throttle up and down with the hand throttle.

It appears that I'm being misunderstood here... the presence, or lack of a foot throttle is of no consequence to me- I'm neither for, nor against.  I have many machines that had hand throttle only, many that had foot only, and many that had both.  I've had machines that had decel pedals, pedals that would go from hand-throttle setting to max governed speed, and pedals that would go from idle, to hand-throttle setting.

My point here, is that a person cannot just slap a pedal on a machine, and connect it to the throttle/governance system without carefully determining what they're doing, and how it affects the machine.

Case In Point... we have had at least FIVE chime in describing how they use THEIR foot-throttles, and in each case, the FUNCTIONAL operation of that pedal is different.  Gary's foot throttle works different from Red Bank's... Red Bank's post illustrates that HIS tractor's foot throttle overrides the hand-throttle setpoint.  This is NOT an unusual setup for many DIESEL machines-  My Komatsu 340 articulating loader had that exact setup... the point I made before about DIESELS, because diesel injection pumps typically have their OWN internal governors- a low speed governor (for low idle, but above fuel cutoff) and a maximum speed governor(never to exceed)... while the working speed is somewhere in the middle range... and regardless of what mechanisms select the actual fueling rate, one can NEVER exceed the pump's upper setpoint.

A gasoline engine doesn't have an injection pump's integral speed limiting governance.  IF you pull the throttle to WFO, it will speed up, until it cannot spin any faster, or until it self-destructs... and any devices (hydraulic pumps, PTO implements) will be included.

Engineers don't arbitrarily throw on control features without having absolute clarity of what will, and will NOT happen when an operator is at the controls... but I've seen plenty of unexpected damage from poor understanding.

For those interested in adding one, I'll cheer you on, but encourage you to understand how YOUR machine's governance works, and how YOUR modification will affect the machine.  Just be very careful- don't set it up so that it can force the machine into an overspeed condition, bad things happen really fast.

Actually the foot throttle on my tractors and Red Banks work exactly the same.His 5040 and my Oliver 1365 are both Fiat tractors from the same era and most parts will interchange.Seems really you're the only one that doesn't understand how things work,take time to read the operators manual is always good.

He's a smart guy, I get that.  Point is, Gary made this foot throttle some years ago I gather and it works perfect for him.  Sometimes, a well-after-the-fact dissertation isn't needed.  And, sorry, but Dave is actually the one who derailed the discussion in my opinion.  We were talking foot throttles on TRACTORS and yes, TRACTORS WITH LOADERS (which apparently is something different) and then Dave commented a decelerator would be more useful.  I cited that I'd been driving tractor for close to 50 years and have never hoped for a decel pedal instead of how I'm equipped.  But then dozers came out as the reason.  As if that isn't different than a tractor?????  Sometimes, just sometimes, if a dissertation isn't well received, maybe don't follow it with yet another dissertation.  Just sayin'.  

To further beat the dead horse the foot throttles on all the tractors I have are from the factory,almost all foreign built tractors had them as far back as the 1960's and they have become standard on most tractors.

im4racin wrote: Dave is talking on a way higher level than most others here.  He is a very smart man and everyone should listen.

If you say so but his opinion doesn't carry the authority of the engineers at Fiat,Yanmar,

David Brown,Pasquali and a host of other companies that designed and had installed on their farm tractors foot throttles as far back as the 1960's.Foot throttles on farm tractors were apparently standard equipment and well like by farmers who liked to use them for the last

50 or more years.To come out now and state they don't work is absurd.

Gary Burnett wrote: If you say so but his opinion doesn't carry the authority of the engineers at... ...To come out now and state they don't work is absurd.

This is where not reading comes in:

Never.  That is an absolute fabrication.

In contrast, I stated many examples of how they DO, and I pointed out that I have them on my own machines, and that wether it's on a tractor, or a backhoe, or an FEL, loader... is irrelevant.

I stated that they can be configured to operate in many different ways, and that careful consideration in how it operated, was very important, because:

You CANNOT take a foot pedal, slap it on, and connect a link to a throttle, and expect it to work properly without understanding the governor. Do it wrong, and it may not do what you expect, AND you'll risk doing serious damage.

You are very correct that the engineers of the companies you identified (and many more you didn't) have fitted tractors with foot throttles.  I assure you that, for ANY of the foot-throttle systems that went into production, were designed, built, and tested to every circumstance or failure mode by engineers with AT LEAST HALF my engineering education, and at least a QUARTER of my engineering experience.  They know absoutely positively what they're doing, AND... they have at least THREE engineers with at least same or greater education and experience than I, looking over their work, before signing it on to prototype.  That's what experienced engineers do... they not only check for errors, they provide insight, advice, and mentoring.  the OLD engineers know all the mistakes that were made DECADES BEFORE the young guys walked in the door.