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Post by eppie on Nov 22, 2003 13:58:29 GMT 1
Woodbeef: i think the built-in computer ![:(](//storage.proboards.com/forum/images/smiley/sad.png) will adjust the suspension pressure on the go, just like the Tatra trucks have, to keep the wheel angle correct.
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Post by Woodbeef on Nov 22, 2003 14:31:09 GMT 1
Never the less the ride height will still be changing with a IRS tractor.......when the implement does not have suspension the problem will be compounded....
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Post by eppie on Nov 22, 2003 16:53:51 GMT 1
Yes, i think you mean that the load-adjustment doesn't work as quickly as the ground level changes...
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Post by JD Kid on Nov 22, 2003 21:13:09 GMT 1
Hi ya's good idea if ya don't want to have weight on the back or duels or use ya tractor every day ...some one did come up with a price round 20000 i recall i find it hard to belive a modern owner (the guy who pays the bills not a manger!)would run with that .the only place ya get a return on money in farming is higher output's with less input's how does a added 20000 do that ![???](//storage.proboards.com/forum/images/smiley/huh.png) on another post lee brought up what will happen if the sub's get cut ..if they do watch this idea get binned. catch ya JD Kid
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Post by Voederbietel on Nov 23, 2003 18:08:01 GMT 1
Renzeu
I said that there is a very high moment working over the 2 bearings, because of the little space between them. You must look from the back of the tractor, seeing the axle as a lever (hefboom in dutch). I didn't say torque or turning moment, though it could be seen as some kind of torque, cause they are 2 moments, working CW or CCW, and wants to generate rotation. but anyway, put a CVT in it and this 8000 series becomes a real nice piece of engineering.
muj
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Post by JD Kid on Nov 23, 2003 21:40:23 GMT 1
hi ya's something crossed my mind last night what about big balers behind this setup most have some bounce while baleing ..i can't see how the arms would be strong eneff if a big load was towed behing it or alot of side ways roll ie duels on steep hills .. catch ya JD Kid
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Post by eppie on Nov 24, 2003 17:31:01 GMT 1
Voedrbietel, i know that the brake torque (dynamic, rotational torque) different from the bend momentum caused by the tractor's weight. i was talking about both. or didn't you mean that ?
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Post by Voederbietel on Nov 24, 2003 21:04:53 GMT 1
yes renze, I was talking about both forces. didn't read your comment thay good I suppose.
muj
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Post by Woodbeef on Nov 24, 2003 22:05:11 GMT 1
Ok now boys,lets leave all this theory behind,and just look at the pictures a bit.........In the real world I think it will have problems unless it is only for transport. But then what about inclement weather? ![???](//storage.proboards.com/forum/images/smiley/huh.png)
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Post by Voederbietel on Nov 24, 2003 22:32:51 GMT 1
yer right woodbeef.
a few months ago I read an article about this ILS+RWS=QWS. it said there are 4 tested in germany. they say that it's possible to ride 20 km/h during some kind of tillage instead of 12 or something. other arguments of JD to pay €20000 extra is reduction of powerhop and constant contact with the ground of all four wheels (braking and steering). my opinion is that powerhop is caused by bad tyre choise. but I could be wrong. never been "powerhopping" at this point of view! I rather use a girl instead of a tractor with a male name.
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Post by eppie on Nov 24, 2003 22:46:22 GMT 1
Hmmm... ;D if you would say that litteraly, "using a girl" i think you would have a slap in your face from your girlfriend... I'ts not using, it's a consensus... ![;)](//storage.proboards.com/forum/images/smiley/wink.png) Anyway i remember Alliance advertising their new tires, they said that they had both radial and cross plies, not just totally radial plies but also some diagonal plies to reduse powerhop. I dont think these Alliance tires arent used so much on tractors, mostly on implements and on army trucks converted into silage haulers. On our old Ursus we used to have some powerhop, because the front tires were mounted with the thread pattern in reverse (to get an even wear over the tires, mostly the outer sides wear more) i am also having a little powerhop on our 5245 when driving slowly, with very little tire air pressure, in 4wd over a concrete yard. It's because not all cams on the tire pattern are in touch with the ground at the same time, i think. My neighbor's Kubota B7000 on rice field tires (10 cm cams) hops even more, sometimes wags like a duck.
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Post by Voederbietel on Nov 24, 2003 23:28:37 GMT 1
OK, I better not tell that to my girlfriend. but it's 2 bedtimes away from 'meatloafday ![:-*](//storage.proboards.com/forum/images/smiley/kiss.png) '. hope she doesn't read this... ;D
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Post by Woodbeef on Nov 25, 2003 0:00:24 GMT 1
Hey Doc,
Do you mean the lugs on the tires???
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Post by JD Kid on Nov 25, 2003 7:18:46 GMT 1
Hi ya's What F#$ken S#!T are people smoking on this net !!!!!power hop in the true way is when things will bounce out of the ground .. this will not happen on a hard surface all 4 wheels in contact with the ground ???hello !!!! sucked in to spending 20K ya ever seen a tractor on 3 wheels powerhop?? or a 2 wheel drive powerhop for that matter??? it might buck a bit but true powerhop on a hill will shake ya teeth out of ya head tires tires tires !!!! get the PSI right and powerhop or maybe sidewall flexing on hard surfaces will F#$K off in a matter of a few psi if ya getting a uneven pull on a hard surface disenage the 4wd or have a big stack of cash to fix the spider gears ..or even the transfer case before ya say this dose not happen i can send ya bills to show what a same front end costs to rebuild !!! catch ya JD Kid
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Post by orange on Nov 25, 2003 9:20:17 GMT 1
So when this tractor with all around suspension goes across a hill, what happens??
for example when going across a hill and the tractor leans to the left, does it increase the pressure on the left side and level the tractor up slightly?(you would call this active suspension) If so What then happens to the implement on the back 3 PH, that should not need leveling because it should be following the ground.
If it is active suspension then yes I can see it reducing power hop and improving braking, but only with implements working from the drawbar and not on the 3 point hitch!!
One other problem I can see it having When doing heavy work, weather it be heavy towing or tillage. When starting off the implement behind does not move until it has overcome a certain force, but the wheels will be trying to move forward, so the front and rear axle will always be trying to move ahead of the chassis. This will be worse on heavy tillage this will put a lot of force on the suspension link arms
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