Jery Dunn Tach-N-Go and Forks

[civilian]

Never did any measuring but before I bought I spoke with Jery about the additional offset. He gave me the measurement and it was quite small I thought. Seeing the design once received I was impressed. Installed it and have never removed it but I swap between my forks and bucket often and super quickly.

In my real world use I have maxed out the fork lifts moving landscape blocks but I can't say what percentage I am losing with the QA. Whatever the reduction is, I think it is plenty worth the versatility and convenience it brings! I haven't noticed a difference in moving dirt, etc. with the bucket.

I agree with similar results in my use of fixed forks and/or a full bucket of dirt. Get the weight to far out on the forks and it effects the amount of weight it can handle. But if the weight can move in on the forks, all the better. I also have a picture or two on TBN with my fixed forks lifting a pretty good size ash log. Not sure where the post is. Jon

 

[check]

OK, here’s another stab at it. According to the brochure, you lose about 230 pounds of FEL lift capacity when going from the pin to 20 inches out. So that is roughly 11.5 pounds per inch. And I think Jerry’s quick attach moves the pin out about 4 inches. So, 4×11.5 equals 46 pounds of lost lift capacity. Not too bad.

 

[robertm]

OK, here’s another stab at it. According to the brochure, you lose about 230 pounds of FEL lift capacity when going from the pin to 20 inches out. So that is roughly 11.5 pounds per inch. And I think Jerry’s quick attach moves the pin out about 4 inches. So, 4×11.5 equals 46 pounds of lost lift capacity. Not too bad.

Interesting thought, but I’m betting the loss if graphed is not linear... meaning the first few inches are negligible, and the further out you go, the loss is exponential. Having Jery’s movable forks, the loss is a pittance... and if that figure means that much, you’ve got the wrong tractor.

 

[npalen]

I'm trying to think of the reason why the loss would be non-linear.

 

[robertm]

I'm trying to think of the reason why the loss would be non-linear.

Probably not noticeable on the little BX, but I would think the compressibility of the hydro fluid is the variable. It’s not exactly a simple lever principle. Just my thought... not a hydraulic engineer.

 

[npalen]

Hydraulic oil, for all practical purposes, is not compressible. The "book" says it will compress 0.4% under high pressure actually.

 

[robertm]

I KNEW IT! That 0.4% is the killer.

 

[check]

According to undated PDF format article in Farm Show News Dunn Quick Tach weighs 52 pounds.

DUNN QUICK TACH MORE: www.tractorbynet.com&client=safari&rls=en&sa=X&ved=2ahUKEwi179bVxOjhAhUktlkKHTCLBnUQrQIoAzAAegQIAxAM&biw=1280&bih=644]weight pounds Dunn Quick Tach site:TractorByNet - Compact Tractors & Equipment Resource - Google Search[/url]

Ok, so that plus 110 lbs. for the forks comes to 162 lbs. Can’t remember what the BX 25 FEL weighs.

 

[npalen]

I KNEW IT! That 0.4% is the killer.

Great sense of humor, robertm!

 

[check]

Ok, so that plus 110 lbs. for the forks comes to 162 lbs. Can’t remember what the BX 25 FEL weighs.

Found it! Bucket weighs 123 lbs. So, Jery’s forks WITH the QA weighs 162-123 = 39 lbs more than the FEL. Small effect, in my view.