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DoubleA

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crackerhead

08-18-2006 20:01:04

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Got this wild hair to take two A's and merge them together side by side What kind of problems am i going to encounter as far as the rear axle is concerned ? Am I going to have to make a new longer axle or can i lock out the two sides when i fasten the two together side by side.Steering axle seems to be not much of a problem. Tractor will have no function as to being useful just want a conversation piece that is capable of being driven around

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Andy Martin

08-19-2006 18:44:40

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Re: DoubleA in reply to crackerhead, 08-18-2006 20:01:04

Remember if you connect the two axle shafts together without a wheel between the two tractors that shaft will spin like a wheel off the ground and the tractor will not move.

You should probably lock up one differential so one engine will drive both wheels like usual and the other engine would just provide power to the axle on it's side.

Don't worry about matching the speed of the engines, they have to turn at the same speed so one may carry most of the load, that is, what you have to match is governer settings if you want each engine to pull.

Or you could cop out and only connect one transmission to the axles.

Once the unit is built, it is really hard to work on the carburetor on the right engine and one the distributor on the left engine so get them ready to go before assembling.

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Nat 2

08-19-2006 17:19:19

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Re: DoubleA in reply to crackerhead, 08-18-2006 20:01:04

I know guys are recommending that you lock out the differentials on each tractor, but personally, I would think it'd be better to hook the two differentials together with a shaft.

The differentials will compensate for differences in the RPMs of the two engines.

Locking out one side of the differential causes the spider gears to spin all the time... That'll cause differential failure in short order.

Not connecting them at all... The tractor won't move because the "free" side of the differential will spin.

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Bruce Wa.

08-19-2006 06:33:49

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Re: DoubleA in reply to crackerhead, 08-18-2006 20:01:04

I've seen one of these and I asked how they were coupled together. Seems all you need is a axle shaft made to put between the 2 differentials. They had a piece of square tubing with a flange on each end and bolted the 2 housings together ahead of the platform. The front axle was on the left unit as in a normal A. The axle was adjusted wider on the right side so the wheel was in the right position relative to the right hand unit. Very clean and simple. Both engines ran and pulled.

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gene bender

08-19-2006 03:08:40

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Re: DoubleA in reply to crackerhead, 08-18-2006 20:01:04

Are you going to use both engines together? The speed of both will have to be the same you could lock out both left side and right side of #1 and #2 then let #2 left and #1 right each be powered by their own engines. If you drill out the threads in the tranny you can bolt them together. Or just make a spacer with pipe and flanges to bolt to the tranny. Can be lots of fun but you will have to decide on how to power up using one or both engines together. Then with both engines the clutch pedal has to operate both. Lots of things to do depending how you want to operate when finished. You could even cut and weld both axles so you have a spline on each end. have fun front axle is simple just a piece of pipe from one to another. Steering is something else to get both wheels turning same radius at the same time. Easiest way would be to hook the tie rods together then hook the pitman arm from the sector to center. have fun

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Merlin

08-19-2006 00:34:51

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Re: DoubleA in reply to crackerhead, 08-18-2006 20:01:04

There are some triple A's out there also. Saw one in Hammond, La. a few years back. Didn't have my camera and can't remember the particulars. I was told all three ran but only one pulled. Sorry, I can't answer your question on problems you would encounter.

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Farmer Bob

08-18-2006 20:55:04

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Re: DoubleA in reply to crackerhead, 08-18-2006 20:01:04

You wouldn't have the first double A. This pic was taken at a local show a couple years ago. Can't remember who should get the credit for it.

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kfox

08-19-2006 11:21:15

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Re: DoubleA in reply to Farmer Bob, 08-18-2006 20:55:04

Theres a fella in Elnora, IN that puts two and three F-12s, & F-20s togather. They all power. I've heard that the tripple 20 is a mean pulling tractor. I think his name is Harry Lee. If you can make it to Elnora next Month, you might see some of his creations. ken

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