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 Craftsman GT3000 "MUTT"

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Thunderdivine
TheBeal
BlakeGroce
Murraymountain
Hillbilly Offroading
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RichieRichOverdrive
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Budget_gokart
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Craftsman GT3000 "MUTT" - Page 11 Empty
PostSubject: Re: Craftsman GT3000 "MUTT"   Craftsman GT3000 "MUTT" - Page 11 Icon_minitimeNovember 1st 2021, 9:02 am

well really depends on the machine my small craftsman with a 12hp flathead i run it governed and the pedal hooks to where the dash throttle used to hook to, its jerky when you grab a gear and it drives like a manual car does it jerks if you let off the clutch too fast or something like that but takes off with throttle in 6th but will stall without throttle. my jerks a bit but i wish mine was ungoverned it would fly!
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RichieRichOverdrive
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Craftsman GT3000 "MUTT" - Page 11 Empty
PostSubject: Re: Craftsman GT3000 "MUTT"   Craftsman GT3000 "MUTT" - Page 11 Icon_minitimeNovember 4th 2021, 2:33 pm

It's partly about throttle and clutch control, and part of it is the weight of the tractor. Mutt is pretty heavy, no real sudden jerks happen.
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RichieRichOverdrive
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PostSubject: Re: Craftsman GT3000 "MUTT"   Craftsman GT3000 "MUTT" - Page 11 Icon_minitimeJuly 14th 2022, 9:42 pm

*updating the thread as though it hasn’t been 8 months since the last update lol*

One or two of you may remember my plan to doc lock one of my spare 820s... I got tired of kicking the transaxle around on the floor and actually decided to work on that today.

Back in high school, I had made this hub to fit inside of the differential carrier. It only has a little 1/4” keyway, something I would undoubtedly shear in a hurry. So I decided to work around that.
Craftsman GT3000 "MUTT" - Page 11 46b1e210

Chucked it up in the lathe and chamfered the heck out of the bore
Craftsman GT3000 "MUTT" - Page 11 B0ad4910

Locked the hub where I wanted it with the set screws, actually did put a key in it too, and welded the heck out of it. I did weld it in a few separate beads to hopefully minimize warping.
Craftsman GT3000 "MUTT" - Page 11 72a2de10

Waited til it was cool and chucked the axle back up in the lathe. Turned both of the welds down back to the hub. The weld did turn pretty hard but I have a junky carbide insert to use for that sort of thing.
Craftsman GT3000 "MUTT" - Page 11 87d78310

Lastly I needed a spacer to take up the slack in between the hub and diff carrier. Had a piece of aluminum that already had a 1” hole in it so I turned it out of that.
Craftsman GT3000 "MUTT" - Page 11 684e9a10

That’s about all there is too it on the technical side! Now to find the rest of the guts to this trans and seal it up!
Craftsman GT3000 "MUTT" - Page 11 1fa68110

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MightyRaze
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PostSubject: Re: Craftsman GT3000 "MUTT"   Craftsman GT3000 "MUTT" - Page 11 Icon_minitimeJuly 14th 2022, 10:18 pm

Very nice fab work! Be nice to see some MUTT action back in the forums!

_______________________________________________
Tractors:
Li'l Red Part1  Current - 89 Murray Widebody
TheGreenMachine - 89 Craftsman GT18
Bowser - 01 Murray Widebody LT 
Phoenix - 75 Sears ST/16
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Brianator
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Craftsman GT3000 "MUTT" - Page 11 Empty
PostSubject: Re: Craftsman GT3000 "MUTT"   Craftsman GT3000 "MUTT" - Page 11 Icon_minitimeJuly 14th 2022, 10:50 pm

Nice work man, that looks to be plenty strong enough to take some serious abuse!
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RichieRichOverdrive
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PostSubject: Re: Craftsman GT3000 "MUTT"   Craftsman GT3000 "MUTT" - Page 11 Icon_minitimeJuly 14th 2022, 11:10 pm

Thanks guys. As I recall this axle shaft is a couple inches longer than the stock ones. I think I may widen the rear end up to match the front axle. I also may use that extra space to add 5 lug hubs to finally get rid of these keyed hub rims. I don’t think I have a spare set of 5 lug rims around but I think I know where to get some. I plan to have this trans back together tomorrow after work so I can get Mutt in the shop and get it swapped in.

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MightyRaze
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Craftsman GT3000 "MUTT" - Page 11 Empty
PostSubject: Re: Craftsman GT3000 "MUTT"   Craftsman GT3000 "MUTT" - Page 11 Icon_minitimeJuly 14th 2022, 11:18 pm

It's super nice to stitch over to 5 lug hubs.

_______________________________________________
Tractors:
Li'l Red Part1  Current - 89 Murray Widebody
TheGreenMachine - 89 Craftsman GT18
Bowser - 01 Murray Widebody LT 
Phoenix - 75 Sears ST/16
Dirty Rat - 77 Sears Suburban
Kal-El - 82 Murray GT
 > > > ATLTF Staff < < <
Have a question? Ask me! Type in "@MightyRaze" in your post!


"MTD: Made To Die, Many Troubles Daily..." - Taryl
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RichieRichOverdrive
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Craftsman GT3000 "MUTT" - Page 11 Empty
PostSubject: Re: Craftsman GT3000 "MUTT"   Craftsman GT3000 "MUTT" - Page 11 Icon_minitimeJuly 16th 2022, 1:43 am

Got the 820 all sealed up and back together!
Craftsman GT3000 "MUTT" - Page 11 E5b9eb10

I cut down the threads on this little street elbow so my trans vent clears stuff better. I think the shifter shaft is still going to leak pretty bad but it’ll be alright I think.
Craftsman GT3000 "MUTT" - Page 11 0f4a6010

I probably won’t get the trans put in this weekend, me and my friend are going tomorrow to explore a cave we found. We’ll see about Sunday though.

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RichieRichOverdrive
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Craftsman GT3000 "MUTT" - Page 11 Empty
PostSubject: Re: Craftsman GT3000 "MUTT"   Craftsman GT3000 "MUTT" - Page 11 Icon_minitimeAugust 10th 2022, 12:03 am

Had an idea to seal up the input shaft.

Cheapo O ring, probably not even rated for contact with oil.
Craftsman GT3000 "MUTT" - Page 11 87c4eb10

Shaft collar counterbored to receive most of said o ring. More of a shield for the o ring than anything. This step may not be strictly necessary.
Craftsman GT3000 "MUTT" - Page 11 0e8e2210

Shaft collar pressed against O ring and tightened down.
Craftsman GT3000 "MUTT" - Page 11 Cad70010

Rightfully I should have put the top half of the case on my mill table and centered on the shifter hole and then milled the top of the boss flat and bored the counterbore into the case. Or at least just milled the top flat to give a smooth surface for the O ring. Even better would be to cut an actual O ring groove into the hole for the shifter, and I have the capability to do that with a little effort grinding down a tool for it, but I think this will be good enough.


Trans reinstalled
Craftsman GT3000 "MUTT" - Page 11 Ce785d10

Back wheels now almost as wide as the front wheels. Should be more stable I think. Considering axle supports, I have the bearings and material for it.
Craftsman GT3000 "MUTT" - Page 11 9793a310

I need to replace the bearings in the idler pulleys ASAP. They are all roached from running underwater all the time lol.

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RichieRichOverdrive
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Craftsman GT3000 "MUTT" - Page 11 Empty
PostSubject: Re: Craftsman GT3000 "MUTT"   Craftsman GT3000 "MUTT" - Page 11 Icon_minitimeAugust 10th 2022, 8:12 pm

Took her out for short run around the driveway in the rain. The new transmission is so much quieter. No more groaning from it. I moved the needle in the carb again and messed with the jet screw and it runs much better. I think I might try the needle one more step down to see if it gets any better. Tractor is definitely a lot more stable with the wider stance.

A new air filter system is definitely needed. I need to get some reasonable sized hose to use for it. I think think I spotted some on McMaster that will work for what I need.

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PostSubject: Re: Craftsman GT3000 "MUTT"   Craftsman GT3000 "MUTT" - Page 11 Icon_minitime

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