Recent content by torch

I think the port relief comment was aimed at me -- a way to limit the lifting force on my loader without affecting the pressure available to the 3PH.

Very nice. I also bought 2" diameter cylinders because they were on sale when I built mine. However, I bought 16" stroke ones. I think your approach may be better -- mine is capable of lifting more weight than I really should with a B7100. I knew that going in, but thought I could simply...

It's all about leverage more than specific weight. Let us say that a particular tractor has a 5' wheelbase and that the loader CoG is 3' in front of the front axle (so 8' in front of the rear axle). And let us say that the CoG of that tractor's particular ballast is 4' behind the rear axle...

1. Idle down, especially when lowering (looks like you are doing that already). 2. Use two hands on the control and one direction at a time. Your main (usually right) hand at the end of the lever, as normal, using fingertip pressure. The second (preferably braced against something) firmly...

It gets worse. All that weight is now on the axle that pivots from side to side. Unless the tractor somehow magically stays balanced laterally, the whole thing will lean sideways and quite possibly tip over.

Hard to argue with an approach known to work in that application. But I do note step 4 is "Tap out the axle", which to me implies an interference fit. Good luck and let us know how it all works out!

Ooops. Sorry about that. I forgot they divvied up the B7100s that way. I was just thinking "older".

Just for fun and giggles, I investigated my B7100 (1994 version) exhaust manifold temperatures with a TIC. I set it to °F for consistency with your readings and turned on high, low and centre spot readings. After about 20 minutes of running: 180°F at #1, 220°F at #3. 40°F difference. Ambient...

Look on tractordata.com and scroll down to "Serial Numbers".

That argues the camshaft is not worn. Intake opens 8° after spec. Intake closes 6° before spec. Exhaust opens 13° after spec. Exhaust closes 5° before spec. That argues the camshaft is worn. Or the spec is wrong. Or there was an error in measurement. But the numbers you list match the...

Neat chart. I wasn't aware they had a product that would fill a 20 thou gap! That must be a diameter measurement, not radius, right?

It doesn't. The calibration is really only an issue if comparing to a published spec or value or if using two different instruments, such as an internal mic on the bore vs external mic on the shaft. Dan wanted to compare your shaft diameter to the published spec of the bearing bore so of...

Very nice work! I'm not sure bracing the tops of the towers is necessary -- you have them very well braced at the bottom. They do look a bit short to my eye though. Is that the planned height or is there more to come? I'm not sure what your planned bucket dump height is but remember that a...

FWIW: The B7100 WSM says crank it with the starter at 200 to 250rpm for 5 to 10 seconds. That's a range of 8 to 21 compression strokes, so your rule of thumb is a bit on the low end per Kubota but not a bad estimate.

Don't mistake volume for pressure. Pressure only increases when volume is restricted and the discharge can be calculated by Q=K(P^-2), which can be rewritten as Pressure=(Volumetric Flow/K)^-2 (where K is a constant dependent upon fluid density, temperature, orifice area, etc. ). In English...