HOMEMADE TRACTOR START

[cranker]

Thanks farmer, thehood is off an old sears tractor and i also have the grill. both will need to be modified greatly to fit but we will see how that goes. Yeah those tires were just to get it to a roller stage. i just received my rear tires today actually.
carlisle tru power 29x12.50x15 man are they nice.I think i got a good price on them too.

Thanks again Crank

 

[cranker]

Here is a pic of the new tires that came in today. That is the grill i will be using also, looks like i will need to do some modifying.

ANd here is a pic of the whole shop just for fun.

 

[carpenter383]

Neat project! It looks like you're a good fabricator.
Are you gonna put a 3PH on the tractor?

 

[cranker]

Thanks carpenter, I do plan on putting on a 3ph.

 

[MRCONCDID]

Nice project,
Like most projects it will evolve as it goes on, the other posters are right you are going to need more gear reduction that engine isn't going to like lugging around and your breaks are going to wear out fast tring to hold it back.
5.13 is the one of the largest gears you can get for that rear.
here are a few options that come to mind
2 transfercases linked together would give you a crawl raito of about 100 to 1and a lot of gears to play with but you will have to lenghten the tractor about 2-3 feet.

Another idea is 2 rear ends this idea would give you a lot of ground clearance.
take another rear end and cut the center (diff) out of it turn it 90 degrees so the tube or axles would point up and down and the input points to the tranny. weld/spool up this diff. and spline the bottem axle use a coupler to the original rear which will have to be rotated pointed up. so the input is of the new diff connects to the tranny and the axle pointed down is the input for the original rear end. cap off the top axle tube. I hope I explained it well enought that you get the idea this idea would keep you from having to lenghten the tractor with multiple trannys and transfercases.
I hope this help I have built a few monsters in my day and have learned something new from everyone of them.

 

[Iplayfarmer]

Nice project,
Like most projects it will evolve as it goes on, the other posters are right you are going to need more gear reduction that engine isn't going to like lugging around and your breaks are going to wear out fast tring to hold it back.
5.13 is the one of the largest gears you can get for that rear.
here are a few options that come to mind
2 transfercases linked together would give you a crawl raito of about 100 to 1and a lot of gears to play with but you will have to lenghten the tractor about 2-3 feet.

Another idea is 2 rear ends this idea would give you a lot of ground clearance.
take another rear end and cut the center (diff) out of it turn it 90 degrees so the tube or axles would point up and down and the input points to the tranny. weld/spool up this diff. and spline the bottem axle use a coupler to the original rear which will have to be rotated pointed up. so the input is of the new diff connects to the tranny and the axle pointed down is the input for the original rear end. cap off the top axle tube. I hope I explained it well enought that you get the idea this idea would keep you from having to lenghten the tractor with multiple trannys and transfercases.
I hope this help I have built a few monsters in my day and have learned something new from everyone of them.

Or you could get a gear reducer like the one linked to below and not have to stretch your tractor as much...

https://www.surpluscenter.com/item.asp?UID=2009102216503013&item=13-1333-5&catname=powerTrans

This gear box may not be hefty enough (17 hp) but you get the idea.

 

[Brad_Blazer]

Maybe a post hole digger gear box. They are about 3:1.
GEARBOX HD POST HOLE DIGGER 3.18:1 RATIO - Agri Supply

 

[Oldmax]

cranker
You realy need a final rato of about 20 to 1 to make that thing usefull. 12 MPH is the top gear in my 1715 NH with a 9 speed. have often thought about building something like that using a frount wheel drive and turning it sideways in frame to a rear in the back.

 

[cranker]

Thanks guys for all of the ideas. I think i am going to just continue on with what i have for now.. I knew going into it that i would probably need more gearing. I think what i will probably do once i get it driveable is go with the 6.50 gears and try that. If that is still not enough which i am sure it wont be. I will probably end up going with a transfer case. Unless i find a trans and transfer case real soon i want to keep going forward with the build.

Thanks again everyone i really do appreciate the ideas and compliments.

Crank

 

[MJPetersen]

I saw on a Polish auction site--the Polish version of E-Bay(although that is here too, just not popular.)--a small planetary gear reduction drive that was only about 30 cm long (1 foot). Something like that between the transmission and the rear end it seems like that would be ideal. I do not remember the hp rating of it. I am going to go look for it.

Mike

Ah found it. it comes from the reduction drive for a mower drive for BIG tractors.

i checked ebay quickly and found a planetary reduction 4:1 ratio, but also 5:1 and others. I searched on "planetary gear". link