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Discussion Starter · #1 ·
Hey guys! I picked up a toro 500, i think from the 70's. I stripped it down totally. Now the thing is i want bigger tires and my axle is 3/4" thick... I need a hub for that.. Can any help/explain what kind of hub i need? I want to put 4 or 5 bolt rims on it... Ill atach a pic of my tractor with the tiny tires. Thanks in advance!
 

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Depends on whether your 3/4" axle is keyed,splined,or has 2 flat spots to drive the rims..you might be able to find 4 or 5 bolt hubs off another riding mower or garden tractor with the right type of bore to fit..

Or make some yourself..I have seen guys take a front wheel hub/bearing assembly off a FWD car that has the 4.5" or 115MM bolt circle (5 lugs) and press off the bearing and bolt flange,then weld two hubs with the correct bore to the hub ,so it can be mounted on the tractors axle..you can buy thses "weld-a-pulley" hubs at farm supply stores (they use them for sprockets too),for about 5 bucks each,they have set screws to hold them in place on the shaft..

If your axles are the splined, or flat spot type,you'll probably not be able to find hubs that'll match,in that case you could remove the centers off your old rims and use them for hubs if they are flat there,by drilling the 4 0r 5 bolt circle pattern into them..or use only the bore part as hubs to make the FWD car hun fit..

Bear in mind putting bigger tires on will raise the gearing up too,it will go much faster than before,but also have much less pulling power--to regain that you may need a larger sprocket on the rear axle ,or a jack shaft with more pulleys or sprockets to gear it back dowm low enough again..
 

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I spent months looking for the same thing for my Toro lawn tractor last year. You have 4 choices:

1) P.O.S. 4-lug go-cart hubs available at places like northern tool, etc. They are crap and will fail on a tractor. You probably will not find 5-lug.

2) Racing go-cart hubs available at 1 or 2 online custom shops. VERY expensive

3) 3-bolt hub off of an old John Deere 110 tractor. That's what I used and the only thing I could find. It uses a triangular plate which accomodates 3 lugs but fits a standard 5-bolt pattern.

4) 3-bolt hub off of a snowblower. This is what I am using on the tractor-kart I am building for my kids. You can get rims up to 8" in diameter with a 3-bolt pattern also on ebay....many commercial mowers use these.

Start searching eBay for hubs and for rims and you will eventually find a useful combination.

My final suggestion would be to use wheels with integral hubs. They are easy to find on eBay/craigslist. And cheap. You can get 20" or more tire diameter which will probably be enough for what you are doing.

When looking for tires, consider searching under ATV tires in eBay...you can get a lot of tire for a little money!

Looks like a fun project.....good luck!
 

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Hey guys! I picked up a toro 500, i think from the 70's. I stripped it down totally. Now the thing is i want bigger tires and my axle is 3/4" thick... I need a hub for that.. Can any help/explain what kind of hub i need? I want to put 4 or 5 bolt rims on it... Ill atach a pic of my tractor with the tiny tires. Thanks in advance!
Do you really need 4-5 lug? I know that an easy solution for bigger tires is using tires/rims from many of the old Craftsman tractors . I've scrapped a few and each one had 3/4" keyed shafts . As long as the backspacing is close they would mount right on .

But that is something else to think about . Is the shaft long enough to take a bigger rim/tire combo ? Looking at your pic , I'm thinking you may not be able to get a much bigger rim on there .

Btw , cool little tractor . Did you get it complete ? Those seem to be hard to come by . The one I have was missing the rear , so slapped in one from a Huffy mower . Believe they were made 70-72(?) .

Here's mine as I got ( with the new rear in it) . All original , including paint . gonna make a nice little rider for the daughter .

 

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If you have a lathe you can always turn a hub that slides onto the axle. If it has a key way you are all set. Spline might be a little hareder. You can always slip the new hub over the axle and welld it on but that will screw up the tracctor.

What a cute smile. She is a heart melter.
 

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I have also used the Craftsman type rims with 8" tires and keyed 3/4" bores on those "sit down" mowers that had 3/4" keyed axles--if the axle is too short to pass all the way through to the other side,as long as it goes in more than halfway,that is sufficient..(provided the center hub is one pieice,like a pipe,not two separate hubs, most Craftsman rims are one peice ones).

To hold the rims on,I simply welded a 3/4" shaft collar that has a set screw,onto the rims hub,and put the rim on so thats on the inside,then tighten the setscrew up..worked fine for me..you can use the axle as a alignment devise to line the shaft collar
up,then tack the shaft collar onto the rims hub,
,then remove it to finish welding it on 100%..
 

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Discussion Starter · #8 ·
hey guys thanks for all the input... Yeah i picket it up for 150bucks!. It is complete i have everything but i gutted it out, took out the 5hp briggs and popped in a 18 hp briggs.. Yeah the hood doesnt close,. but hey no project is easy. Okay guys the axle with the keyway messd up.. it started slipping i think a gear within the diff. was loose. Either i can just adjust that OR

Use another rear axle i have. Okay now guys help me. This one has NO KEYWAY but instead the axle at the ends becomes flat.. So the Rim that goes on has a Rectangluar sort of shape inside. I dont know if im explaining it right, but the axle is round but at the end becomes a rectangle and flat...

Can i find hubs for this type of rear axle??? HELP!!
 

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Discussion Starter · #9 ·
Do you really need 4-5 lug? I know that an easy solution for bigger tires is using tires/rims from many of the old Craftsman tractors . I've scrapped a few and each one had 3/4" keyed shafts . As long as the backspacing is close they would mount right on .

But that is something else to think about . Is the shaft long enough to take a bigger rim/tire combo ? Looking at your pic , I'm thinking you may not be able to get a much bigger rim on there .

Btw , cool little tractor . Did you get it complete ? Those seem to be hard to come by . The one I have was missing the rear , so slapped in one from a Huffy mower . Believe they were made 70-72(?) .

Here's mine as I got ( with the new rear in it) . All original , including paint . gonna make a nice little rider for the daughter .


Bud, i took off the "deck" above the tires and heck even the foot resting panels.. it seems like there is clearance.. Im going to use Donut tires. or Spares as this is just a crusing sort of mower that will go fast.. nothing else.. A classy looking fast tractor.. I even took of the cutting deck.
 

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I have a transaxle that has that type of axle,with squared off ends,instead of keyways..I saw ONE rim in a tire pile like that a week ago at our landfill,I have been looking for a pair for it forever,so can make something with it--but the back side of it had been caved in with a sledge,someone evidently used one to get it off ,so it was junk..:(

I did see some rims with that type hub in the Surplus Center website,a long time ago,perhaps they still have some in stock?..only other place to find any would be a mower boneyard,try old lawn mower shops that may have a junkpile out back..you might be able to use rims that fit by simply drilling the hubs and the axles for a bolt and "pin" them on,I have at least 4 sit down mower chain driven rear axles that are that way factory..I may end up doing that to my transaxle ..
 
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