Tractor "bouncing"

[Bob77064]

What size tractors have suspensions?

 

[RoyJackson]

What size tractors have suspensions?

None, to my knowledge. Some have suspension seats though (to ease operator fatigue).

 

[Robert_in_NY]

None, to my knowledge. Some have suspension seats though (to ease operator fatigue).

The large frame tractors from John deere, Fendt and others do have suspension options. John Deere calls theirs ILS (Independent Link Suspension) but these are on 250 hp tractors and bigger. I don't know what the smallest tractor is that has a suspension system available but it wouldn't be cheap.

 

[Grandad4]

Great forum, I've used it many times in the past but just joined officially.

I've got a Kioti DK40 with about 250 hours on it. Recently it has started "bouncing" rymthically When I'm driving the on pavement. sort of like one of the tires is causing it. Feels like I'm riding a horse. the tires have fluid in them, and air pressure is about 15 in the back and about 20 in the front. I understand that it's not supposed to ride like a car, but this has just recently started.

Any ideas?

Thanks,
Paul

I'd support what the others have said about tire pressure, Paul. The tires on our tractors do lose air gradually. Sometimes I'll take one on the road and get some bouncing that is cured by adding some air, usually to the fronts.

 

[nspec]

Full size loaders and backhoes from all major manufacturers offer 'ride control' to counter this common problem when large tires are run at high speed. They use electrohydraulics to move the loader up and down very small amounts to counter the bounce and provide a smooth ride and higher speeds. Has been a problem for 30++ years.

 

[Bob77064]

Tractor with suspension 2155 | JCB

 

[leonz]

Nothing like dreaded case of the Hoppsies to ruin ones afternoon;

The only serious way to dampen and eliminate the hoppsies is to-
be sure the rim is centered if the stud holes are greater in size than
than the studs making the alignment of the tapered lug nuts the
issue for centering the rims, OR be sure you have the diamond
style turfs or the square lug turfs on the rears as they are a tire
with very low P.S.I.,tire and a tire with a very low ground pressure
per square inch.


_________________________________________________________________
Once you go flail you never go back:thumbsup::licking::drool:

 

[boggen]

once you start hip hopping, at least for me, i need to slow down almost completely and restart changing back up gears to higher speed.

for me, hip hopping problems are when i have front loader full, or have something on the backhoe.

when finding new R4's for TLB, the higher the PLY was, the more warnings i saw for hip hopping. higher tire PLY rating = rubber does not flex as much.

double check air pressure as well in all tires. it has been awhile since i have had to check air. i want to say 12 PSI? for the 555TLB i have. tractor tires are not car tires were you want 24 to 34 PSI in them. but a much lower PSI. refer to your operators manual.

take tractor out of 4wd or MFWD. this is normally suggest when ever you go out on the road. due to slight difference in how fast front tires turn vs back tires turn when 4wd or MFWD is engaged.

road conditions change through out the year, at least here in central, IL. just from frost heaving, causing the road to crack and buckle in spots. just them slight bumps can really make a tractor start hip hopping.

on many SCUTS, CUTS, and perhaps utitly tractors i have read here on TBN, that when tractors ship out new, the tires are turned in. causing a shorter width wheel base. i doubt it will do much for bouncing. but *shrugs*

 

[sweep]

thanks guys, It gets worse the faster I go, High gear on the highway. Ag tires. Nothing on the back as far as implements. I just don't remember being this bad before. But it sounds like this isn't really atypical for a tractor, right?

Just wanted to throw it out there and see if someone would say my "so and so" was out of wack or there was a bulge in the tire or something like that.

Thanks again.

My NH with ag tires does the same thing but I notice it more in mid range than high range.

The whole front of my tractor just shakes when going down the road both in 2wd and 4wd.

Thought it might be a driveline problem but could find nothing wrong.I jacked up the front end and found no grinding or weird noises and hnaged the fluid and found no metal shavings etc

Mine started out at about 100 hrs but at 190 hrs now it is not getting any worse.

My personal opinion is the tire belts have moved and the tires arenot perfectly round anymore.

 

[Mousefield]

My tractor is 3 1/2 years old and ever since I got it if I go too fast it wants to bounce. Have only had in in high a few times, not worth trying to go faster, the bounce is a killer. All that shaking has to very hard on the tractor. Usually have my backhoe or box blade on as well as the FEL and travel in mid range. Think it is just one of those things you live with.