Yanmar 336D on Hills: Yanmar Tractors  -- Other Tractor Brands Discussion Forum and Review Yanmar 336D on Hills: Yanmar Tractors -- Other Tractor Brands Discussion Forum

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 03-02-2010, 18:52 Post: 168930
comotoes



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 Yanmar 336D on Hills

Any advice out there on how steep a hill is the 336 capable of either decending or climbing and still keep the shiny side up? I am considering decending about a 30 degree slope down to a river to do some firewood clean-up and get a bad case of anal-pucker with any decent. I have a bucket on it so wheelies aren't a high probability. Any advice or experience out there?






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 03-02-2010, 19:11 Post: 168931
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 Yanmar 336D on Hills

There's a difference between a 30 percent grade and a 30 degree angle. FWIW, a 30% grade is about a 17 degree angle. Don't think I'd tackle a 30 degree angle, but I might (carefully) work a 30% grade. Just go down and back up the hill diagonal to the slope. That cuts your angle of attack way down. If you're going to carry anything heavy back uphill in the front bucket, keep a sharp eye on the downhill side front wheel

//greg//






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 03-03-2010, 00:16 Post: 168941
auerbach



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 Yanmar 336D on Hills

You can lower the C of G in various ways: with a belly mower; liquid in the tires, esp the lower half of the rears; a rear implement just off the ground; and particularly keeping the bucket low.

Yanmar rear rims are offset so installed one way they minimize the width, sometimes used for shipping, so ensure they're not set this way.

Another school of thought holds that you are more likely to roll (tip) sideways than pitch (front over back), so you should steer up/down hills on the path a rolling ball would take.






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 03-03-2010, 06:22 Post: 168942
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 Yanmar 336D on Hills

Quote:
Originally Posted by auerbach | view 168941
Another school of thought holds that you are more likely to roll (tip) sideways than pitch (front over back), so you should steer up/down hills on the path a rolling ball would take.

The highway engineers that build S-curves in the mountains must not have gone to that school.

//greg//






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 03-03-2010, 08:38 Post: 168944
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 Yanmar 336D on Hills

Hmmmmm..... not lookin' good for the home team - this is definitely more like 30 degrees. But if I back down the slope with some sand in the bucket . I'm afraid that the fly in the ointment is the fact that this is a wooded area and if any of the corners - particularly the downhill corners - drop in a depression, the shorts are soiled, at best!






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 03-03-2010, 14:01 Post: 168953
auerbach



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 Yanmar 336D on Hills

Yes, the questioner could carve curved roadways Greg, as such roadways are level (so rolling/tipping a narrow Yanmar is not a concern -- unlike following a diagonal).






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 03-03-2010, 15:00 Post: 168955
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 Yanmar 336D on Hills

Have you looked to see if your manual gives you any idea on the amount of slope? My guess is they will be very vage due to liability issue. Your question is much longer than my experience for we don't have hills here. But for what it is worth I have driven CUT and Mid size tractors down slopes of every bit 30 degrees with no issue. Never driven up that steep a slope but have backed up some. Never had a FEL on a tractor doing so but have done it a lot with rear blade or box blade and pulling dirt as I going. Would never think to try driving up such a slope pulling a blade.

Again no hills here so the distance has never been more than 20 feet or so.

If you will do a search for the standards for Interstate you might find the info there of value.






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 03-03-2010, 15:02 Post: 168957
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 Yanmar 336D on Hills

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Originally Posted by auerbach | view 168953
Yes, the questioner could carve curved roadways Greg, as such roadways are level (so rolling/tipping a narrow Yanmar is not a concern -- unlike following a diagonal).

Think I need a Canadian-English dictionary to understand that one. But more to the point, I have several slopes on my property that I don't dare tackle straight down. And for the record, one of the tractors that have negotiated those slopes was a YM240. Anyway, I'd never be able to stop at the bottom. But I do work the same slopes quite comfortably on the diagonal. Takes some experience, cuz the technique is counter-intuitive. When it starts feeling like there might be some control issues, instinct makes one want to steer back uphill. But it's safer to counter that reflex with slight downhill corrections to shift the center of balance to the uphill side

//greg//






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 03-03-2010, 15:20 Post: 168958
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 Yanmar 336D on Hills

Quote:
Originally Posted by greg_g | view 168957
Think I need a Canadian-English dictionary to understand that one.



I'd happily try to translate for you Greg, but since the vast majority of the time I spent in the US was in the Low Country of the Carolinas, I'm not sure you'd understand my American either. Laughing out loud

I think what Auerbach meant was to carve a lane into the side of the bank such that the tractor was sitting level side-to-side while going up and down the hill.

IMHO if it's not too far down the hill, a long cable and a logging arch is the ticket. A logging arch is basically a horseshoe-shaped (standing vertically on the two points) arch with a wheel at each end and a long tongue coming forward to pull it from. You snag a log which rides in the hollow formed by the arch. Leave the tractor on the high ground and just pull the arch up the slope.
Much safer, way down the "seat of the pants pucker factor" scale.

They can be fabricated in short order by anyone who can do even basic welding.

Best of luck.






Link:   Logging Arches 

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 03-03-2010, 15:20 Post: 168959
hardwood

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 Yanmar 336D on Hills

I won't even try to guess what the safe angle, or gradE which ever way you measure it is. I've did a few or maybe even more than a few things on a grade that weren't real smart, but so far I've got away with it.
Just one point I'll make is having a loader on the tractor helps a lot whether it its an up down trip or across a sidehill. I go up/down in reverse with something like sand/ dirt in the bucket real low with my hand on the lever ready to drop the bucket, so far I haven't had to.
OK now, across a sidehill with a traditional wide front axle tractor the pivot point of the axle is just below the radiator. That said, with something heavy in the bucket and the bucket as low as it can be to clear the ground the mass in the bucket being below the pivot point of the front axle actually improves your stability by moving the center of gravity of the tractor/loader a bit toward the uphill side of the tractor.






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Discussion Boards > Active Subjects > Messages as Posted > Yanmar Tractors Forum

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