Kubotasaurus, a home built micro tractor

chaffe · Nov 8, 2011

And a couple of bad pics of the tractor as it stands (with pedal control) more to come!

chaffe · Nov 11, 2011

more to come on this later tonight

chad22 · Nov 11, 2011

I have a question. I was wondering exactly how you drove your differential with the hydraulic motor. I see the chain on the hydraulic motor but how about the differential. Did you add a sprocket to the differential too? If so how did you attach the sprocket to the differential?

I ask because I have a differential out of an Buick regal that I want to hydraulically drive for an articulated loader backhoe.

Thanks and looking forward to seeing more.

Chad

chaffe · Nov 12, 2011

chad22 said:
I have a question. I was wondering exactly how you drove your differential with the hydraulic motor. I see the chain on the hydraulic motor but how about the differential. Did you add a sprocket to the differential too? If so how did you attach the sprocket to the differential?

I ask because I have a differential out of an Buick regal that I want to hydraulically drive for an articulated loader backhoe.

Thanks and looking forward to seeing more.

Chad

Hi, Yes your 100% correct. I thought long and hard, initialy wanting to use direct drive and some sort of coupling, but space was a premium, so I ended up with a slightly over-driven chain drive. The sprocket is (rather roughly) welded to the flange on my diff. I turned a spigot on it first so as to ensure perfect alighnmment. I have had no issues soo far.
The three point hitch is working (bottom arms lift and lower hydraulicaly) all that remains is to pipe it neatly and fit my top link. Pics tomorrow after painting!

chaffe · Nov 13, 2011

As promised, here is the pictures of the finished article; Complete with three point linkage, oil filter and now a handle AND foot control for direction.

Klorinth · Nov 13, 2011

Chaffe,

Fantastic! Impressive work.
You give this beginner hope that one day I will actually be ready to build something.

Any idea about the lifting capacity of your 3ph? Very interesting.

chaffe · Nov 14, 2011

Klorinth said:
Chaffe,

Fantastic! Impressive work.
You give this beginner hope that one day I will actually be ready to build something.

Any idea about the lifting capacity of your 3ph? Very interesting.

thankyou! not sure on capacity yet! not too much id say as such a small tractor will lift the front very easily, but it lifted my 200lb mate standing on the ends of the lift arms!

chaffe · Nov 18, 2011

mower deck starting soon!:thumbsup:

chaffe · Nov 18, 2011

mjncad · Nov 19, 2011

chaffe said:
mower deck starting soon!:thumbsup:

I have a lifetime lease of 1-square foot of Scotland at the LAPHROAIG DISTILLERY. I'll bet your mower and micro tractor would be perfect for maintaining my wee patch of land.

chaffe · Nov 20, 2011

A few more additions, Including a lever that controls a new valve to adjust speed and run on, this has made drivability much more controllable. A couple of quick release couplings are now on the back too (still to be mounted solidly) Its really comming togetyer now, Overall im happy with the results.

chaffe · Nov 27, 2011

Started the FEL now, lift height about 5ft, 27" wide bucket and probably 200 ish lb lift (more id say, but ill have to experiment) dont think ill get it to self level (was going to mount my tilt ram on the lift ram, this would self level, but i think it would bend the piston rod on the liftt ram)
The loader will be removable and the bucket will be quick hitch. The only small issue i have is i only have four services, 1, fwd and rev, 2, rear three point linkage, 3, front loader lift, and 4, tilt on front loader (this is the small problem, I will put this on quick release coupligs so i can still use my log spliter with the loader attached.)

what do you think?

Iplayfarmer · Nov 27, 2011

Chaffe, that little tractor is looking so good!!

I think you'll be fine with your hydraulics like you have them. If you find you need more you can add another valve with power beyond.

chaffe · Nov 28, 2011

Iplayfarmer said:
Chaffe, that little tractor is looking so good!!

I think you'll be fine with your hydraulics like you have them. If you find you need more you can add another valve with power beyond.

Thank you, I agree with you on the extra valve if required, the way i see it is you wont need to use the loader and log splitter at the same time!

chaffe · Nov 29, 2011

more work tonight:

chaffe · Dec 1, 2011

more pics of the loader, it is essentially finished now bar a few more welds and some paint

:tractor:

KubotainNH · Dec 1, 2011

That's cool. I never thought my little tractor could be a big brother to something.

chaffe · Dec 2, 2011

KubotainNH said:
That's cool. I never thought my little tractor could be a big brother to something.

Thanks, its just a bit of fun TBH, the machine is cabable of work for sure, but im never going to use it all day, 7 days!
After my backhoe build (robbed for parts to make this) I am contemplating making a small backhoe attachment for this tractor, the idea will be to make it as light as possible but still cabable of some work. Whats peoples view on this?

Iplayfarmer · Dec 2, 2011

chaffe said:
Thanks, its just a bit of fun TBH, the machine is cabable of work for sure, but im never going to use it all day, 7 days!
After my backhoe build (robbed for parts to make this) I am contemplating making a small backhoe attachment for this tractor, the idea will be to make it as light as possible but still cabable of some work. Whats peoples view on this?

Go for it!! I think there are a lot of us that could benefit from what you learn in the process. There's a real need for light weight mini backhoes that can do some real work.