Every tractor with the 3-152 Perkins after the 135 is still basically an upgraded 135. If you have a 1/4 section, you'd probably want a bigger tractor. If you only had 10 or 20 acres, you don't need 100 H.P.. 135's, 150's etc. are mostly designed for 3 pt. implements. That's why a 1964/65 MF 100 series tractor has a superior 3 pt. hitch system to most every other tractor on the market, even today. In comparing engines, look at larger engines. All the better engines use sleeves. A DT 466 is a good example. Yes sleeves are made that can be put in non sleeve engines but it costs a lot more. The engine has to be bored first and then sleeved. Nowadays it's all about making a cheaper, more affordable tractor. Look at the JD's that are made in India. Do you think they would sell as cheap if they were made in the US? Seems odd to me that sales figures don't matter. Early Ford Mustangs set sales records. Like MF 100 series they are still highly sought after. How can you have a model in production for 11 years and set sales records without it being an outstanding machine? Obviously a lot of people have a need for a smaller tractor. You can't compare a 40 H.P. tractor to a 100 H.P. or more tractor for a main farm tractor. There are zillions of 3 pt. implements of all sizes that can be matched to the H.P. of any tractor. It seems a waste to me to use a high H.P. tractor for a grain auger, mower or other chore that doesn't need it. Most people can't afford to pull a 15 ft. mower to cut the grass. If you check in the archives on here, any time someone has asked what would be a good tractor for smaller acreage, 135/s, 150/s etc., are the tractors of choice. They in fact do cost more than other tractors and really good ones demand a premium price. Why? Because they are the time tested standard and have been proven to live up to their reputation as being very reliable and efficient to operate. Dave
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Today's Featured Article - Tractor Hydraulics - The Basics - by Curtis Von Fange. Hydraulics was one of the greatest inventions for helping man compound the work he can do. It’s amazing how a little floor jack can lift tons and tons of weight with just the flick of a handle. What’s even more amazing is that all the principals of hydraulic theory can be wrapped up in such a small package. This same package applies to any hydraulic system from the largest bulldozer to the oldest and smallest tractor. This short series will take a look at the basic layout of a simple hydraul
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