HST Wine, Not any more

[David s Von Gieserbrechta]

Well here I sit with a busted tractor fan and the dealer won't get another one in untill Monday so what to do?

Well yesterday I took the roll bar off of the tractor as that was the easy part and if I had to pull the tractor apart I might just as well start there. After I removed it an amazing thing happened, I had to move the BX to where I would be working on in and there was no noise coming from the transmission, no wine no nothing, all I heard was the engine. Now I always thought that it was just the transmission that was doing the wining and that there wasn't much that one could do about it but I had never removed the roll bar before.

As it turns out that roll bar is just like a big tunning fork and when your on the tractor your right in the middle of it. So what to do? Well the first thing that I did was to make some rubber pads out of an old inner tube three layers thick to sandwich between the roll bar base and the mounting pads on the transmission. Bolted the roll bar back on and it made a big difference but the wine wasn't gone as the vibration still worked it's way through the bolts and into the roll bar, back to the tunning fork thing.

Somehow I had to deaden the vibration in the bar itself, so what I did was drill a 3/8" hole in the pads on the bottom of the roll bar and one 1/4" hole hole in the center of the bar on the inside top.
I then injected urethane insulation foam with a long 3/8" plastic hose attached to the can into the holes in the mounting pads untill the foam came out of the 1/4" hole on top. I just kept injecting foam while backing the hose out untill I had filled the whole bar.

This morning I reinstalled the roll bar and fired up the tractor, The WINE is GONE, I mean like really Gone. The sounds of silence, or just the sound of that little diesel doing it's thing, It's kinda nice.

Now before the kubota safety police come knocking at my door because of drilling holes in the roll bar , save yerself the trip cuz I ain't letting yuh in. It's my tractor and I can do with it as I choose. Now I'm not advocating that anyone else does this but firstly the holes in the 1/2" thick base plate make No difference whatsoever and if a 1/4" hole in the roll bar top destroys the the structural integrity of the steel in some hitherto unknown manner then perhaps Kubota should look into using a better grade of steel.

So for any of you who just can't stand that incessant wine any more it's just a thought.

 

[blueriver]

So your saying you now have an insulated roll bar ... cooler in the summer and warmer in the winter ... good job.

 

[ultrarunner]

Nice find and good solution.

 

[David s Von Gieserbrechta]

So your saying you now have an insulated roll bar ... cooler in the summer and warmer in the winter ... good job.

Yeppers, I figure with that insulation on three sides that six pack of Coors that I keep hanging from the bar should stay nice an cool whilst I'm out mowing in those hot summer afternoons.:laughing:

 

[blueriver]

Yeppers, I figure with that insulation on three sides that six pack of Coors that I keep hanging from the bar should stay nice an cool whilst I'm out mowing in those hot summer afternoons.:laughing:

I was also thinking now that its foam filled it won't hurt so bad when you bump your head on it....

 

[EE_Bota]

Well here I sit with a busted tractor fan and the dealer won't get another one in untill Monday so what to do?

Well yesterday I took the roll bar off of the tractor as that was the easy part and if I had to pull the tractor apart I might just as well start there. After I removed it an amazing thing happened, I had to move the BX to where I would be working on in and there was no noise coming from the transmission, no wine no nothing, all I heard was the engine. Now I always thought that it was just the transmission that was doing the wining and that there wasn't much that one could do about it but I had never removed the roll bar before.

As it turns out that roll bar is just like a big tunning fork and when your on the tractor your right in the middle of it. So what to do? Well the first thing that I did was to make some rubber pads out of an old inner tube three layers thick to sandwich between the roll bar base and the mounting pads on the transmission. Bolted the roll bar back on and it made a big difference but the wine wasn't gone as the vibration still worked it's way through the bolts and into the roll bar, back to the tunning fork thing.

Somehow I had to deaden the vibration in the bar itself, so what I did was drill a 3/8" hole in the pads on the bottom of the roll bar and one 1/4" hole hole in the center of the bar on the inside top.
I then injected urethane insulation foam with a long 3/8" plastic hose attached to the can into the holes in the mounting pads untill the foam came out of the 1/4" hole on top. I just kept injecting foam while backing the hose out untill I had filled the whole bar.

This morning I reinstalled the roll bar and fired up the tractor, The WINE is GONE, I mean like really Gone. The sounds of silence, or just the sound of that little diesel doing it's thing, It's kinda nice.

Now before the kubota safety police come knocking at my door because of drilling holes in the roll bar , save yerself the trip cuz I ain't letting yuh in. It's my tractor and I can do with it as I choose. Now I'm not advocating that anyone else does this but firstly the holes in the 1/2" thick base plate make No difference whatsoever and if a 1/4" hole in the roll bar top destroys the the structural integrity of the steel in some hitherto unknown manner then perhaps Kubota should look into using a better grade of steel.

So for any of you who just can't stand that incessant wine any more it's just a thought.

I knocked on your door, but no answer.
I was going to tell you I discovered the same thing, and posted it in a thread here somewhere. I didn't fix it, since once I found out it was just amplified, and not that bad at the source, I didn't mind the whine anymore. But, you sound quite bright, (planning to make a fan out of stainless, beyond my skill level) so I wanted to ask you if you can tell from the frequency what the likely source of the whine is.

I guessed charge pump. Would you agree?

 

[EE_Bota]

Yeppers, I figure with that insulation on three sides that six pack of Coors that I keep hanging from the bar should stay nice an cool whilst I'm out mowing in those hot summer afternoons.:laughing:

You guys must have WAY better Coors than I can get here. Blah!

 

[David s Von Gieserbrechta]

I knocked on your door, but no answer.
I was going to tell you I discovered the same thing, and posted it in a thread here somewhere. I didn't fix it, since once I found out it was just amplified, and not that bad at the source, I didn't mind the whine anymore. But, you sound quite bright, (planning to make a fan out of stainless, beyond my skill level) so I wanted to ask you if you can tell from the frequency what the likely source of the whine is.

I guessed charge pump. Would you agree?

I have no idea, when it comes to hydrostatic transmissions I'm about as ignorant as a person can get. Now I can machine any of the parts in that transmission if you tell me what it is that you want and give me a blueprint of that part but as to what that part does? Not a clue.:confused2:

 

[WilliamBos]

Well here I sit with a busted tractor fan and the dealer won't get another one in untill Monday so what to do?

Well yesterday I took the roll bar off of the tractor as that was the easy part and if I had to pull the tractor apart I might just as well start there. After I removed it an amazing thing happened, I had to move the BX to where I would be working on in and there was no noise coming from the transmission, no wine no nothing, all I heard was the engine. Now I always thought that it was just the transmission that was doing the wining and that there wasn't much that one could do about it but I had never removed the roll bar before.

As it turns out that roll bar is just like a big tunning fork and when your on the tractor your right in the middle of it. So what to do? Well the first thing that I did was to make some rubber pads out of an old inner tube three layers thick to sandwich between the roll bar base and the mounting pads on the transmission. Bolted the roll bar back on and it made a big difference but the wine wasn't gone as the vibration still worked it's way through the bolts and into the roll bar, back to the tunning fork thing.

Somehow I had to deaden the vibration in the bar itself, so what I did was drill a 3/8" hole in the pads on the bottom of the roll bar and one 1/4" hole hole in the center of the bar on the inside top.
I then injected urethane insulation foam with a long 3/8" plastic hose attached to the can into the holes in the mounting pads untill the foam came out of the 1/4" hole on top. I just kept injecting foam while backing the hose out untill I had filled the whole bar.

This morning I reinstalled the roll bar and fired up the tractor, The WINE is GONE, I mean like really Gone. The sounds of silence, or just the sound of that little diesel doing it's thing, It's kinda nice.

Now before the kubota safety police come knocking at my door because of drilling holes in the roll bar , save yerself the trip cuz I ain't letting yuh in. It's my tractor and I can do with it as I choose. Now I'm not advocating that anyone else does this but firstly the holes in the 1/2" thick base plate make No difference whatsoever and if a 1/4" hole in the roll bar top destroys the the structural integrity of the steel in some hitherto unknown manner then perhaps Kubota should look into using a better grade of steel.

So for any of you who just can't stand that incessant wine any more it's just a thought.

Excellent work David!!

 

[wild bill]

So, how many cans of foam do I have to buy to silence my beast?:thumbsup::thumbsup: