B7800 Wheel Spacers

[cinckid]

I have solved the problem of working on hillsides with my B7800. I had a machinist make a set of wheel spacers that extend each side of the rear axle 3 inches and it really improves the stability of the tractor. If anyone needs to add them to a B7800, B3030, B2910 tractor I can get them for you. I have discussed the use of the spacers with 3 local Kubota dealers and the salesmen have told me that the tractor will operate just fine with the extra 3 inches.

 

[cinckid]

Here are some pics of the spacers.

 

[GordNovo]

God those are nice! I'd love to get something like that for my new 2520. It's more stable in the ditch compared to my old 2305 but the pucker factor is still there!

Did you spend a lot of money getting those made?

Gord

 

[alchemysa]

I'd love to get something like that for my new 2520.

Gord

See this thread and the 'unverferth' site for wheel extensions. they may have something for you. '

http://www.tractorbynet.com/forums/...-axle-extensions.html?highlight=stability+kit

Unverferth Wheel Hub Extensions

 

[rural2]

Thanks for the Unverferth link and especially the pics. Are those made from solid round stock? Wheel weights and extensions at the same time Curious about the cost also??? Looks good!
I was thinking about front extensions only since total width is an issue around here w/all the trees??? Now you got me wondering...

 

[cinckid]

Add Pics.

 

[cinckid]

Cost of the extensions were expensive - $250 each. That included the bolts for the extensions. The nice part is they can be removed to return the tractor to original condition. The Unverferth site did not have spacers to fit my tractor. I also foam filled all the tires, front and rear, which also helps with stability and prevents flats. You can run over anything, nails, thorns etc.

 

[jd2320]

This doesn't put to much stress on the rear axles or rear end with all the weight out on the ends like that??

 

[crbr]

Cost of the extensions were expensive - $250 each. That included the bolts for the extensions.

That answers my question.

Indeed a very nice looking piece of machined work. That's actually not a bad price for the spacer, all considered.

Thank You...

:tiphat:

 

[Northland]

That looks like a real good idea. I think I need those on my B7800 as I have 20 acres of hilly maple forest. Can you get them for the front wheels as well at $250 each?

 

[rural2]

What he said.

That answers my question.

Indeed a very nice looking piece of machined work. That's actually not a bad price for the spacer, all considered.

Thank You...

:tiphat:

 

[Taiser]

I got a 900 lbs BH on the back of my 7800, six inches don't sound like much but I think I would be nervous at the possible additional stress on the axle. Thank god I got level land! That is sweet looking though!

 

[GordNovo]

I got a 900 lbs BH on the back of my 7800, six inches don't sound like much but I think I would be nervous at the possible additional stress on the axle. Thank god I got level land! That is sweet looking though!

I could be wrong but from my understanding if you extend the hubs by a few inches, you're not stressing your axles anymore. Are you? The added stress would be on the hub and it's made of solid steel held in place with 6 large bolts.

It's been a few years since physics class. Anyone know for sure?

 

[ThisldooFarm]

Just flip the front wheels on a 7800. It adds several inches to the track, and makes it easy to install winter chains, which I need in upstate NY.

 

[Northland]

Just flip the front wheels on a 7800. It adds several inches to the track, and makes it easy to install winter chains, which I need in upstate NY.

Thanks for that suggestion.I am going to flip my frint wheels today and add front tire chains this winter. I think it will make a huge difference in my forest work and trail snow clearing work come winter

 

[skippy957]

It is a very good idea, we use spacers on ATVs and it they works great and the stability so much.

 

[JLoaf]

I could be wrong but from my understanding if you extend the hubs by a few inches, you're not stressing your axles anymore. Are you? The added stress would be on the hub and it's made of solid steel held in place with 6 large bolts.

It's been a few years since physics class. Anyone know for sure?

Adding spacers will increase the bending stress in the axle at the differential due to the increased length of the lever arm. There should be no increase in the shear stress in the axle.
For what it's worth, I make living as a structural engineer.

Kubota makes a spacer kit that add 1.5" to each side. The kit used to be priced at @ $242. The part number is B8785. This kit fits B2710, B2910, B7800, B2630, B3030.

3" total can make a substantial difference in stability.

 

[Ductape]

I put Kubota's kit on my 3030, and the added stability is very noticeable. I wish they only charged me $242 though.........

 

[JLoaf]

I could not find the part #B8785 at tractorsmart.com.
I did find part#70000-60112 and was $195.
I'm not sure if that is a kit or one spacer?
Probably one spacer as parts keep getting higher and higher.
I have a B2710 and have often considered adding the spacers for better stability. I added fluid to the rear tires - about half full - and that helped a lot. I have turf tires and they are 'bouncy'. Adding fluid dampened the bounce.

 

[ButteBrute]

Was that $250 each (times two for one on each side...$500), or per each pair? i.e. each one, or each pair? Any still available?