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I relate to the vibration discussion from my days in the sound biz. Vibration and sound have a lot in common. Engines have vibrations (sound) and they produce standing waves. I’ve used phase reversal and delay tricks to fix many feedback problems since particular frequencies can be reinforced or cancelled at the microphones.

I imagine the design goals in engines for undesired vibration are similar to sound buz: If you can't prevent them, cancel them; if you can't cancel them, then try to sop them up; and if you can't sop them up, then reduce the power. I imagine that sopping and power reductions are the least desirable in both engines and sound. In sound, sopping means compromised mixes and dead sounding rooms. In engines sopping means adding mass to the engine. Reducing power as a solution raises the question of why bother to build it in the first place.

In addition to the comments that the degree spacing affects how vibration reinforces or cancels there would seem to be many other factors. The physical size of an engine affects the distance vibration travels and therefore the frequencies that cancel or reinforce. Things like displacement and design (eg. in-line vs. v) would affect the size and resonate frequencies. RPM would affect the frequencies produced. Material and size of crankshaft components would affect how vibration propagates.

I suspect that differences between the cylinder number and arrangements that work best for gas and for diesel engines result from differences in combustion and characteristic rpm. Diesels in vehicles tend to be high compression-low rpm engines compared to gas engines in the same application. I think combustion in diesels also occurs over a longer part of the power stroke. It would be interesting to know if the designs for high-torque-low rpm industrial gas engines are more similar to gas or diesel engines in equipment.

4 cyl vs 3 cyl diesel
Kubota Tractors
Replies 22 Post by TomG

I've got a Koyker 150 loader and I was doing some pushing with it yesterday and I heard a snap, then the dump doesn't work. I can lift and lower the bucket and I didn't see any leaks anywhere, but I can't make the bucket dump or roll back. Anybody got any idea what might have happened ? BTW it's got a joystick control.
Thanks.

Loader problem
Loaders Back Hoes
Replies 4 Post by Vmsmgr

Low book in the north east is in the upper 30's range high upper 50's.

7410
John Deere Tractors
Replies 2 Post by Art White

I haven't found anyone that is compatable between the mid-mower and the blade. The frame extending back to the mid-section of the tractor prohibits the two being used together. It took the industry several years to build the loaders to be compatable with the mid-mowers and I haven't heard of anyone doing the blade.

Front Blade for JD 4400
John Deere Tractors
Replies 16 Post by Art White

The hydro valve in the rear end is changed to protect the transmission from shock loads when using the loader. It has nothing to do with the implement pressure that is set at 1000 psi for your machine. There is only one way to increase the lifting capacity of your loader, which is to replace the 1.5” cylinders with 2”. This will increase your capacity to approximately 500 lbs. Do yourself a favor and put the loader valve back in the transmission, if your cook the rear end it can get expensive.

JD 40 Loader
Loaders Back Hoes
Replies 3 Post by Deere Guy2

Draft Control is a viable way to keep a back blade from grabing to much fill for the tractor to pull, with a box blade it works just as well. It would also keep a backblade from bringing up the lawn while removing snow. It will keep the front of a 6 btm plow from coming out of the ground while cresting a hill or let it go down while in the bottom of a gully. It will raise the hitch if you catch a large stone to help keep from breaking the plow. There are differences in the hitches as was stated in an earlier post. Some repond with less than a 7% load change and some take more than 20% to repond rendering them useless or nearly so. Some will react in less than a second, some only in seconds often to little to late. Do the bulk of compact tractors need it for there applications? No.

3 PH Position control vs draft control
Operating and Attachments
Replies 28 Post by Art White

I have a JD870 and want to order the manuals that will allow routine maintenance like valve adjustments etc. I have the operators manual and it does not cover engine valve adjustments. The Op manual does have an order sheet for other manuals -- there is an "engine technical manual" and several "FOS" manuals whatever that means covering topics such as engine, electrical, hydraulics, etc. What manuals should be ordered to allow reasonible maintenance. Should serious service work be needed, I would use a dealer or service shop. Thanks for any guidance. Ed

JD Manuals
John Deere Tractors
Replies 8 Post by EdC

Just waiting for it to be assembled and shipped. Hopefully in the next couple weeks

Price check
Kubota Tractors
Replies 6 Post by DRankin

We have tiller tines available for all Gray Market tractors.
Yanmar, Kubota, Iseki, Mitsubishi........

Tiller Tines
Yanmar Tractors
Replies 1 Post by gerry trudeau

Mine is a IH in good shape,I would sell mine for $200.00
or trade it for a 2 bottom plow to fit my 4310

plow sizefor JD 2040
John Deere Tractors
Replies 6 Post by DH83

I am looking for a used loader for a Ford 3600 and a Ford 3910. Email me jwpfled@hotmail.com

Loader for Ford 3600 and 3910
Loaders Back Hoes
Replies 1 Post by JW Pfled

It was a 260 cu. inch. I can't remember to take out the trash but my head is full of meaningless factoids like that one.
I guess there were 289's also but this is the one I remember.

JD4210 vs Kuby 3010
John Deere Tractors
Replies 58 Post by DRankin

Ted, I had never heard of the Equiptment Trader Online. What a cool site! Thanks for suggesting it.

JD 4100 v BX series
Operating and Attachments
Replies 38 Post by DRankin

This is known problem with the BX 2200, just had mine replaced last week .After waiting a month for a replacement tank to come in, of course the dealer had the tractor apart when he found they had none in stock ,they were back ordered. Lucky it has not rained in a while and no grass to cut. Call you dealer ASAP and get in line. Good luck

Tom

BX2200 Fuel Leak
Kubota Tractors
Replies 2 Post by Tom from NJ

We recently bought a JD 650 and have experienced problems with the tachometer needle going beyond the numbers on the tach face. Sometimes the tach works properly other times it almost spins around to the tach-stop. One dealer said its the cable another said it's the tach-head. Before I start taking it apart, anyone out there run into this condition before? It's my understanding that the 650 uses a mechanical tach. Thanks

JD 650 tachometer troubles
John Deere Tractors
Replies 13 Post by Angelo B.

If I could buy a B8200HST, loader,tiller and box scraper with 260 hrs. in good condition for near $5900.00 I'd grab it now. I'd think I was stealing it.
Bud

How much for my B8200
Kubota Tractors
Replies 8 Post by BudG

I have a KK Bush hog and it has worked fine. It was much cheaper than the JD and the JD dealer could not explain to me what the differences were.

I know they are built in Alabama but if I recall correctly, I think the transmission on my bush hog said "Made in China".

King Kutter Mowers and Tillers
Mowers Field and Finish
Replies 8 Post by Mr Ed

I was quoted 6398.00 for the 757c 16 inch and 7.5 ft.
i wouldn,t be supprised if there,s a better price out there

New Holland 757C Backhoe Price
New Holland Tractors
Replies 4 Post by pieter

David Brown, who is known for making Aston-Martins, started out making tractors. I believe that both he and Lamborghini became interested in speed after years of doing well at building pull. I think Brown eventually bought Aston-Martin but I don't know how Lamborghini got into cars. David Brown is the DB in Aston-Martin model numbers it originally referred to the engines I think. Maybe my recollections need a bit of help here.

I too have watched three wheels spinning and wondered about a front diff lock. A related subject discussed awhile back is a differential between the front and rear drive trains. If I remember, during turns (the diff locks wouldn't be engaged) distances traveled by the front and back wheels are different and a differential would improve traction.

Lamborghini
Other Tractor Brands
Replies 17 Post by TomG

Guess I've been long on theory for awhile and it's pleasant to get practical for a change. I've never been certain how necessary PTO shaft boots are. I haven’t gotten around to buying one, and that’s been years now. I just keep the end covered with grease when a PTO shaft isn't connected and then clean it thoroughly before connecting a shaft.

Kubota service
Kubota Tractors
Replies 10 Post by TomG