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 | chuckh
Join Date: Jul 2003 Posts: 3 binghamton new york 
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2003-01-18 47718
Looking over the specs on a b21 I noticed something odd concerning pto horsepower. Isnt the b21 a beefier version of the b7500. The engines are both listed at 21 overall horse. Total displacement 61.1 cu. in. 3cyl and 2600rpm.
Identical so far yet the pto horse on the 7500 is 16 and the b21 is 13pto horse. Both tractors are hydros so why the difference? I'm intreseted in the more rugged b21 with a loader but 13pto is very weak if looking at snowblowing or mowing. Any ideas as to why or is this just a misprint in the brochure?
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 | DRankin
Join Date: Jan 2000 Posts: 5116 Northern Nevada 
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2003-01-18 47720
Deere has a TLB that is basically a 4700 with yellow paint. It is listed at 43 HP gross and 33 PTO. Same as Kubota, big HP losses..... Maybe they have real big hydraulic pumps?? ....
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 | Art White
Join Date: Jan 2000 Posts: 6898 Waterville New York
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2003-01-18 47731
You are right on part of it. The B-21 and the tractors in that series use the B-27,2910 and the 7800 three range transmission for that application as the middle range gives more flexibility in digging power and speed when using the loader. ....
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| chuckh
Join Date: Jul 2003 Posts: 3 binghamton new york
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2003-01-18 47738
The hydraulic pump on the 7500 is is 7.0gpm. The b21 is
8.5gpm. I take it this is the reason for the pto hp difference/between the b21 and the 7500. I'm not sure if I understand what you are getting at Art with your previously posted response. Could please restate your explanation.
Thanx ....
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| Art White
Join Date: Jan 2000 Posts: 6898 Waterville New York
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2003-01-19 47776
Don't worry about 1 horsepower. You also have a heavier transmission and rear end in the B-21 than the B-7500 or 2410 offers. Unless your main use is to do PTO work you will never know the difference. ....
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