Jinma 254 to decrease the chances of rollover

[acadian32]

Good day all,
I was wondering if anyone would have suggestions on trying to gain more stability to avoid / decrease the chances of rollover, a wider rear tire? / dual wheel? my Jinma is a 254 with full cab and I find it could be very easy to tip over and I have several places on our property that have angle driveway.
Thank you all for your comments / suggestions

 

[timinsanborn]

1 option is to flip the inner disc on the rear wheels, this will increase the rear wheel stance by about 5" or 6".

 

[SPIKER]

yea like Tim said swap tires and turn them inside out

 

[acadian32]

Thank you guys I was looking at that option this pass weekend as an option was not sure how much I would gain 5" yum interesting I will give that a shot but may end up going dual wheel ???

 

[acadian32]

Good day all,. I was thinking about the rollover protection and I think I got it… I could have a custom 3 point hitch bar welded on axle wider then my tractor add 2 wheels/ tires this should work don’t you think? I have 2 new hubs at the house all I need is a steel pipe / shaft and the rest I could get done at the local shop.

 

[quicksandfarmer]

Before you do all that, I would just try widening the stance of the tires and see how you like it. Here's a thread that discusses it in detail:
Rear Wheel Width Positions | CHINESE TRACTOR WORLD FORUMS

There are five possible widths for the rear tires.

That said, I have to say that when I got my Jinma I thought it was incredibly tippy, I still remember driving it the first day and wondering when it was going to capsize. I read about widening the tires and realized I should do it, but somehow never got around to it. Somehow over time I got used to it, and it doesn't seem nearly as tippy any more. It helps that I have a pretty good sense of where the limit is. I was driving it today and went right into a small sideways hill, and I thought to myself that eight years ago I never would have gone there. So they're not as tippy as they feel at first, you might just get used to it.

 

[acadian32]

Thank you Quicksand will review that link, do you have a cab like mine on your tractor? I think this makes a huge difference top heavy feeling and I almost tipped it over on a slope no more then 20% that was a scary moment I'm sure I would not have been injured but the windows would have broken on impact for sure...

 

[acadian32]

Good evening all, just a quick message to say thank you all and Quicksand well i did what was said on the link you provided and wow wow what a difference BIG THANK YOU... Blueberry runs like a champ

 

[Btown]

You might want to consider loading the tires. This will also add weight which is a good thing.

 

[acadian32]

I agree Btown, how would be a good PSI for hose size tires ? rating on the tire is not always perfect one would think with a lower pressure decrease once again tip over right ? updated pic attached

 

[Btown]

I agree Btown, how would be a good PSI for hose size tires ? rating on the tire is not always perfect one would think with a lower pressure decrease once again tip over right ? updated pic attached <img src="http://www.tractorbynet.com/forums/files/chinese-tractors/438978-jinma-254-decrease-chances-rollover-20150827_180710-2-jpg"/>

I meant adding a fluid to your tires, mostly the rear ones. Most people are using rim guard (beet juice) since it is non toxic and not corrosive. I assume up there in Canada you will need fluid that does not freeze. Water would not work. Some people also use a water antifreeze mixture and the old time favorite is calcium chloride with water. Calcium chloride will eat your rims, it must go in a inner tube in the tire and watch for leaks. Loading tires will add weight down low and at the back of the tractor making it more stable. Just don't try to move the tire and rims. They will be very heavy.

 

[acadian32]

Good day, I understood that Btown I was just wondering what is a good PSI "air pressure" for those tires

 

[flusher]

Good day all,
I was wondering if anyone would have suggestions on trying to gain more stability to avoid / decrease the chances of rollover, a wider rear tire? / dual wheel? my Jinma is a 254 with full cab and I find it could be very easy to tip over and I have several places on our property that have angle driveway.
Thank you all for your comments / suggestions
View attachment 438687

Yes--a wider rear tire on a smaller diameter rim. My 1964 MF135 diesel was modified to have a low center of gravity by switching to 18.4-16 tires on a 16" diameter rim. The front axle spindles were swapped for shorter ones to keep the tractor level. All four tires are 2/3 filled with water (no freezing problem here in the North Sacramento Valley). The previous owner made the changes to mow and disc his olive orchard without getting smacked in the head by lower tree branches.



Your tractor naturally has a high CG because it's a platform tractor--the floor is attached to the top of the transmission housing. That 135 is a straddle tractor--you sit in the seat with your legs straddling the transmission housing. The clutch and brake pedals are positioned low on that housing. It's easier to modify a straddle tractor for low CG than a platform tractor.

Good luck and be careful out there. The fact that you're asking this safety question in your thread shows that you appreciate how easily and quickly you can roll a tractor if you're not careful.

 

[acadian32]

Good day Flusher you have a nice tractor since the modification to the rear wheel wow its so much better and yes one need to be careful with tractor and like my father in-law says tractor are meant to work slow and he is right good time to relax and enjoy the work you do... thank you for your suggestions / comment all good information have a great day.

 

[s219]

Good day, I understood that Btown I was just wondering what is a good PSI "air pressure" for those tires

If it doesn't say on the tires, the owners manual will tell you. Normally you run tractor tires at the full rated pressure on the sidewall. The presence of fluid doesn't change the pressure to be used.

 

[Btown]

If it doesn't say on the tires, the owners manual will tell you. Normally you run tractor tires at the full rated pressure on the sidewall. The presence of fluid doesn't change the pressure to be used.

What he said. Fluid does not change air pressure. When you set the tires wide it takes some time to adjust to the width.

 

[acadian32]

Okay thank you Btown

 

[nepa]

Would getting too much traction, say by putting on dual rear wheels, put the differential lock or 4wd at greater risk of breaking?

 

[sd455dan]

Good day, I understood that Btown I was just wondering what is a good PSI "air pressure" for those tires

have to disagree with running the pressure listed in the owners manual-
of some listed pressures- in some chinese tractor manuals


Looks like what i will post may not be of any help because it looks like your tractor has 9.5 x 24 inch tires.

For my chinese tractor . the front pressures listed in the manual seem to work well.


But The manual lists 30 PSI for rear tires , i generally run about 12-14 psi in my 14.9 x 28s.
It rides better and also seems to have better contact patch which should help with even wear of the tread.

My ford 3000 has the same size rear tires and can't seem to find the manual at the moment but think it lists the air pressure settings of around the 12-15 psi also.

found the manual- and for max weight with a 4 ply rear tire manual lists 14 psi...
running a 6 ply looks like it could be bumped to 16 psi and this is for maximum loading (weight) for both ply ratings.
With reduced weight loading the pressures can be reduced- but none of the rear tires listed are less than 12 psi or over 18 psi...

This may not be apples to apples on the tire sizes -but is something to keep in mind when dealing with chinese tractor manuals- fairly sure that a few just list a pressure for the rear tires that is so high- it may be suspect.



ps

On your question of using the diff lock, it is ok if you are on soft ground and a tire is slipping or you believe it is very likely to slip in a straight line.
Would not recommend engaging it on pavement or especially when in a turn, with good traction and in a turn the diff lock can damage a differential

 

[redman135]

Hello acadia32, If you have a low budget or have a narrow gate/shed then your better option is to set the rear wheels to the maximum width. Then add some liquid ballast, something that won't freeze.
If you are not constrained by narrow gate or shed, then I would go for duals and I would also add ballast to the inside tyres ,but not the outside tyres as there may be times you need to remove them. I found with duals you can drive on quite steep side slopes comfortably, and when you hit soft ground you make less ruts and you don't get stuck the way you do with single tyres.
Tyre preassure wise I ran my inside tyre at 12psi @ 75% full of water (no freezing problems) and the out side tyres at 8-10psi . I tried 20psi once on a friends say so, and it was horrible. Way to much preassure for the load.
good luck which ever way you go. PS please let us know when you decide.