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 Peerless MST Durably and R&D

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PostSubject: Peerless MST Durably and R&D    Peerless MST Durably and R&D  Icon_minitimeApril 2nd 2018, 7:19 pm

So with the (don't even know what to call it lol, go kart on steroids) build we are planning on using:

- A peerless 90 degree left hand gear box
-to a Mst205-545c i have

I have found the specs on the angle box and it's complicated thinking about it.
http://www.peerlessgear.com/node5379.aspx?nid=300861

The interesting thing is that logically these were made for tractor use. or low horse, low rpm, high torque.
same for the most part in the transaxel

Because we are powering them off of a 440 2 stroke Polaris (fuji) engine that I calculated makes around 30 ft/lbs max at around 7,800 rpm.

So in conclusion we are going to be doing some fairly hard stress testing knowing we are going to make a normal peerless run up to 80-120 mph

This will be interesting as to how long until it gets shredded.

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Crazy_Carl
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PostSubject: Re: Peerless MST Durably and R&D    Peerless MST Durably and R&D  Icon_minitimeApril 2nd 2018, 8:57 pm

yeah problems with these transaxles is that the shafts inside them have bushings and not oil lubricated ball bearings.  Bushings are great for low rpm stuff, but don't last long in higher rpm and heat situations.
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PostSubject: Re: Peerless MST Durably and R&D    Peerless MST Durably and R&D  Icon_minitimeApril 2nd 2018, 9:12 pm

that's what we figured, we are already planing on moding it to have a sump or two,
pump and a atf cooler.
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PostSubject: Re: Peerless MST Durably and R&D    Peerless MST Durably and R&D  Icon_minitimeApril 2nd 2018, 9:13 pm

Yeah I definitely wouldn't leave a single bushing in that case if you're thiniing about reaching those speeds. Wouldn't take long for one of them to get eaten up.


"This'll either wake you up or put you to sleep forever!"- Red Green         "Whatever you do you should do right, even if it's something wrong." - Hank Hill
     
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 Garden Tractor Collection: Allis B-110 x2, 710, 716, & 410 - Wheel Horse 655, 953 & 500 Special - Case 444 - Bolens Versamatic, G10 & 1668 Diesel Swapped - Cub 106, 124 & 1000/149 Frankentractor - Ford 120, LGT 125 & 145 - White 1650 Yard Boss - Moto Mower 710-100
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PostSubject: Re: Peerless MST Durably and R&D    Peerless MST Durably and R&D  Icon_minitimeApril 2nd 2018, 9:22 pm

Have you thought about making your own case and converting from bushings to ball bearings?  Check out a 3 piece wheelhorse transmission.  That'd be a starting point for a homemade housing design.
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PostSubject: Re: Peerless MST Durably and R&D    Peerless MST Durably and R&D  Icon_minitimeApril 2nd 2018, 9:38 pm

Full bearings, or nothing. I just can't see bushings tolerating that kind of abuse. If you MUST use a pancake transaxle, I VERY strongly recommend a Peerless 820 converted for oil. It can take a lot more stress, and ships with a full bearing package. Iron diff carrier, too.
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PostSubject: Re: Peerless MST Durably and R&D    Peerless MST Durably and R&D  Icon_minitimeApril 3rd 2018, 12:16 pm

Doc Sprocket wrote:
Full bearings, or nothing. I just can't see bushings tolerating that kind of abuse. If you MUST use a pancake transaxle, I VERY strongly recommend a Peerless 820 converted for oil. It can take a lot more stress, and ships with a full bearing package. Iron diff carrier, too.
At that high RPM the chain is likely to break and cause mass havok.  IDK, it just seems like 820s are overrated. Most people who have them say they are just a big MST with a chain reverse, and a 1" shaft that make it harder to find pulleys for it.
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PostSubject: Re: Peerless MST Durably and R&D    Peerless MST Durably and R&D  Icon_minitimeApril 3rd 2018, 1:03 pm

Double W Cross Ranch wrote:
Doc Sprocket wrote:
Full bearings, or nothing. I just can't see bushings tolerating that kind of abuse. If you MUST use a pancake transaxle, I VERY strongly recommend a Peerless 820 converted for oil. It can take a lot more stress, and ships with a full bearing package. Iron diff carrier, too.
At that high RPM the chain is likely to break and cause mass havok.  IDK, it just seems like 820s are overrated. Most people who have them say they are just a big MST with a chain reverse, and a 1" shaft that make it harder to find pulleys for it.

I disagree, like @Doc Sprocket mentioned it has full bearings.  Needle bearings instead of bushings and also ball bearings on the axle.  It actually has a 3/4 input shaft not 1"  the 1" is the axle.  It is much more durable.  Yeah a point of contention is the reverse chain.  While still durable for mudding applications, it is recommended to remove for speed applications.

Unlike it's other "GT" cousins, the 820 does allow you easy shift on the fly.


Peerless MST Durably and R&D  Sig115PROJECTS:
     Marshal ........93 Craftsman GT6000      
     Red Bandit ...72 Wheel Horse Raider 12
     Dirty Rat........77 Sears Suburban
     Bowser..........01 Murray Widebody LT
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PostSubject: Re: Peerless MST Durably and R&D    Peerless MST Durably and R&D  Icon_minitimeApril 3rd 2018, 1:55 pm

I think no matter what you use, you are going to chooch the tranny after the first gear shift.
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PostSubject: Re: Peerless MST Durably and R&D    Peerless MST Durably and R&D  Icon_minitimeApril 3rd 2018, 4:08 pm

biggasmowers wrote:
I think no matter what you use, you are going to chooch the tranny after the first gear shift.

In this case I agree.


Peerless MST Durably and R&D  Sig115PROJECTS:
     Marshal ........93 Craftsman GT6000      
     Red Bandit ...72 Wheel Horse Raider 12
     Dirty Rat........77 Sears Suburban
     Bowser..........01 Murray Widebody LT
     Other projects
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PostSubject: Re: Peerless MST Durably and R&D    Peerless MST Durably and R&D  Icon_minitimeApril 3rd 2018, 5:09 pm

Maybe he should hunt around for some snowmobile or atv drivetrain parts that would handle the power and speed better. If only there was a really heavily built garden tractor transaxle with no bushings or reverse chain and 1 1/8 axles?

Oh yeah a Wheel Horse 8 speed!
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PostSubject: Re: Peerless MST Durably and R&D    Peerless MST Durably and R&D  Icon_minitimeApril 4th 2018, 5:40 pm

The engine is coming out of a Polaris sled I have. were using the MST because it's siting around lol. But anyway the idea was to use a sequential mower transmission because the diff will let us do double wishbone suspension all around. And honestly we are probably going to pull it apart anyway and take the chain off, put bearings in and make the homemade pressure oil system with cooler.
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PostSubject: Re: Peerless MST Durably and R&D    Peerless MST Durably and R&D  Icon_minitimeApril 4th 2018, 5:45 pm

Like run CV shafts off each axle and then mount up the double control arm setup to the frame? I don't know, it'd suck to build all that around it just to have the trans fail.


"This'll either wake you up or put you to sleep forever!"- Red Green         "Whatever you do you should do right, even if it's something wrong." - Hank Hill
     
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      - Ford LT 110 Off-Road Build
      - Craftsman GT 6000 Off-Road Build
       - Sears LT11 Rat Rod Build *2019 Build-Off Winner!*


 Garden Tractor Collection: Allis B-110 x2, 710, 716, & 410 - Wheel Horse 655, 953 & 500 Special - Case 444 - Bolens Versamatic, G10 & 1668 Diesel Swapped - Cub 106, 124 & 1000/149 Frankentractor - Ford 120, LGT 125 & 145 - White 1650 Yard Boss - Moto Mower 710-100
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PostSubject: Re: Peerless MST Durably and R&D    Peerless MST Durably and R&D  Icon_minitimeApril 4th 2018, 6:01 pm

Not necessarily, knowing how much space there is we could drop several things into the small area, and Im honestly more worried about heat then poping shifting keys.
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PostSubject: Re: Peerless MST Durably and R&D    Peerless MST Durably and R&D  Icon_minitimeApril 4th 2018, 6:03 pm

I'd be worried about the input shaft bearing/bushing. Or the bushings for the main and counter shaft for that matter. I would think exensive machine work would be required because the bushings should be replaced with bushings.


"This'll either wake you up or put you to sleep forever!"- Red Green         "Whatever you do you should do right, even if it's something wrong." - Hank Hill
     
      - MTD Off-Road Build
      - Ford LT 110 Off-Road Build
      - Craftsman GT 6000 Off-Road Build
       - Sears LT11 Rat Rod Build *2019 Build-Off Winner!*


 Garden Tractor Collection: Allis B-110 x2, 710, 716, & 410 - Wheel Horse 655, 953 & 500 Special - Case 444 - Bolens Versamatic, G10 & 1668 Diesel Swapped - Cub 106, 124 & 1000/149 Frankentractor - Ford 120, LGT 125 & 145 - White 1650 Yard Boss - Moto Mower 710-100
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PostSubject: Re: Peerless MST Durably and R&D    Peerless MST Durably and R&D  Icon_minitimeApril 4th 2018, 9:22 pm

Just run a live axle with u joints like dune buggies that are powered with motoe cycle engines. They have a middle solid area with bearings and a drive attachment, then after the brackets there is a u joint on each side allowing for wishbone suspension.
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PostSubject: Re: Peerless MST Durably and R&D    Peerless MST Durably and R&D  Icon_minitimeApril 5th 2018, 9:39 am

biggasmowers wrote:
Just run a live axle with u joints like dune buggies that are powered with motoe cycle engines. They have a middle solid area with bearings and a drive attachment,  then after the brackets there is a u joint on each side allowing for wishbone suspension.
The CTLT has spoken!
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PostSubject: Re: Peerless MST Durably and R&D    Peerless MST Durably and R&D  Icon_minitimeApril 5th 2018, 10:11 am

Yup!!!!!!!! lol! oh I could use the mst if you don't end up blowing it up ......... i would give ya like 50 bucks for it
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