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Hunt4Allis 
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Joined: 13 Mar 2018
Location: Ohio
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 Topic: D15 need an over run clutch for brush hog?
Posted: 08 Jul 2019 at 4:03am |
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I've been told I needed a overrun clutch for a model CA to run a brush hog, but would a model d15 need one?( How do these overrun clutch work?)
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DiyDave
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Joined: 11 Sep 2009
Location: Gambrills, MD
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Posted: 08 Jul 2019 at 4:58am |
Really with both tractors mentioned, its a toss up. with a CA, and you stop with the axle clutch, you get the same effect as stopping a D-15 with the PD...
ORC'a are needed on tractors like B's and C's, operating bush hogs....  |
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nella(Pa)
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Posted: 08 Jul 2019 at 5:32am |
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D15, no.
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Hubert (Ga)engine7
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Posted: 08 Jul 2019 at 5:36am |
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With the PD on a D15 you won't need an ORC, on the CA you won't need one unless the hand clutch has been bolted together rendering it inoperable.
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Just an old country boy saved by the grace of God.
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jaybmiller
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Posted: 08 Jul 2019 at 5:59am |
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Hmm, doesn't an ORC stop the bushhog from destroying the tractor if it hits ,say, a big friggin rock , or the 'ohyeah...THAT stump' ??
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3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor)
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JayIN
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Posted: 08 Jul 2019 at 6:04am |
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It would never hurt to have a ORC on both tractors. In a panic situation the first natural reaction is to go for the foot clutch.THAT will still send you thru the fence. I dont know how I know that. An over running clutch would have saved you in a panic situation.
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sometimes I walk out to my shop and look around and think "Who's the idiot that owns this place?"
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darrel in ND
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Joined: 22 Nov 2009
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Posted: 08 Jul 2019 at 6:20am |
 jaybmiller wrote:
Hmm, doesn't an ORC stop the bushhog from destroying the tractor if it hits ,say, a big friggin rock , or the 'ohyeah...THAT stump' ??
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That would be a slip clutch. Darrel
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Butch(OH)
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Posted: 08 Jul 2019 at 6:51am |
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Depends, A person thoroughly familiar with the two clutch system will bang the hand clutch for a panic to stop of forward motion and thus he doesn't need one. If one's first instinct is the foot clutch thats a different deal.
Don't take this personal but since you had to ask, you might want to invest in an O.R. clutch.
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Charlie175
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Posted: 08 Jul 2019 at 7:27am |
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I would use one, you might not need it but I find when using one on my 190, I can stop and shift. Otherwise I have to wait until the mower stops turning to shift.
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Charlie
'48 B, '51 CA, '56 WD45 '61 D17, '63 D12, '65 D10 , '68 One-Ninety XTD
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Gerald J.
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Posted: 08 Jul 2019 at 9:21am |
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The overrunning clutch passes torque to the mower from the tractor, but goes open when the mower PTO shaft is turning faster than the tractor PTO shaft. That is important for safety when the PTO shaft in the tractor is driven by a shaft in the tractor transmission. Without the ORC the inertia of the mower will make the tractor move even with the engine clutch disengaged and sometimes be stronger than the tractor brakes sometimes causing collisions with trees, power poles or buildings. Important to have an ORC with tractors like the Ford 9N, 2N, and 8N and AC with similar transmissions.
Gerald J.
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Hunt4Allis
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Posted: 08 Jul 2019 at 2:43pm |
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Ok, thanks for the heads up fellas!
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Reindeer
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Posted: 08 Jul 2019 at 2:53pm |
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I've used a bush hog on a 170 and a D15 S2 and find the ORC is a nice addition as it allows easy shifting, and prevents nasty surprises. Keeps me from running the tractor into the pond:) on occasion.
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ocharry
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Posted: 08 Jul 2019 at 10:26pm |
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I use a over run clutch on my 170...I also added a slipper clutch to the drive shaft on my bush hog...it came with a shear pin set up...so now it has both....to much....maybe...but it works for me
The over run clutch sure makes for better shifting of the trans....it let's the trans stop turning so you can shift gears while the bush hog keeps spinning
Get a ORC ...they work good and makes for safer bush hogging
Ocharry
Edited by ocharry - 08 Jul 2019 at 10:29pm
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Walter(MO)
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Posted: 08 Jul 2019 at 10:34pm |
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Using an allis brush cutter with the over riding clutch with the pins do you still need an additional clutch?
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DiyDave
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Posted: 09 Jul 2019 at 4:30am |
Walter(MO) wrote:
Using an allis brush cutter with the over riding clutch with the pins do you still need an additional clutch?
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No
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Stevegates01
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Posted: 12 Jun 2020 at 3:04pm |
I work for an agriculture company, they have a lot of land where we grow different plants, trees, flowers and many others. The CEO of the company has many old tractors including d15 which he put up for sale. Recently he bought new new John Deere tractors, they work perfectly and he is very pleased. Moreover, these tractors have different attachments like snow blower and lawnmower. So if you're interested to buy a D15 or maybe to ask for some details, you can visit this webpage https://www.growgardener.com/best-brush-cutter-for-stubborn-brush/ and see the contacts of my boss, he can tell you more information.
Edited by Stevegates01 - 16 Jun 2020 at 7:49am
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DiyDave
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Posted: 12 Jun 2020 at 5:19pm |
Stevegates01 wrote:
I work for an agriculture company, they have a lot of land where we grow different plants, trees, flowers and many others. The CEO of the company has many old tractors including d15 which he put up for sale. Recently he bought new new John Deere tractors, they work perfectly and he is very pleased. Moreover, these tractors have different attachments like snow blowers and lawnmowers. |
What are these john deere tractors you speak of? Never heard of em...
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BrianC
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Posted: 12 Jun 2020 at 5:41pm |
Are there other attachments that need an ORC?.
I think you should get the ORC, because when in a panic it seems natural to hit the clutch and brakes.
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DrAllis
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Posted: 12 Jun 2020 at 6:35pm |
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Dear "Stevegates01" : Sure glad your CEO is happy with the new John Deere tractors that are 55+ years newer in age than his old Allis-Chalmers D-15. Not sure why in Sam Hill you think that is important, but have a nice day anyway. D-15's had many optional attachments for them as well that you apparently aren't aware of.
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Brian Jasper co. Ia
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Posted: 13 Jun 2020 at 12:13am |
BrianC wrote:
Are there other attachments that need an ORC?.
I think you should get the ORC, because when in a panic it seems natural to hit the clutch and brakes.
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What he said. In a panic most people stomp on the foot clutch and brakes.
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"Any man who thinks he can be happy and prosperous by letting the government take care of him better take a closer look at the American Indian." Henry Ford
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HD6GTOM
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Posted: 13 Jun 2020 at 9:59pm |
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If you buy an over running clutch, buy a good one. Two friends of mine have been killed by N Ford's when the overrunning clutch locked up and they were pushed over cliffs winding up under the mowers. An friend of Dads was killed by an MT John Deere being pushed into a deep ditch because he did not have an overrunning clutch on his mower.
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