Nice setup Tone. How do you match up the pto speed to the trailer axle? Seems to turn slow.
12 Likes
I was wondering the same thing Don, I guess it must be synced good with the size tires on the wagon with the ’wheel ratio pto’ or what it could be called.
There is also a good flowing hydraulic pump in the excavator, you can do smooth and fast digging with it. Thanks for the movie 
11 Likes
surprising coincidence you beat me to it.
Hi Tone
Is there a speed differential between the tractor’s PTO and the trailer’s drive axle? I’m talking about the speed synchronization of the drive axles.
10 Likes
I’ve already answered this question… 
8 Likes
It is still hard for me to understand how that can work in all gears. I had an old 4 wheel drive truck once that if the front and rear tires were mismatched they would squawk on a paved road. How does the tractor know what gear ratio the trailer axle is and what size tires it has? Or am I just dumb?
10 Likes
It doesent. You got to match them up yourself when building the trailor by installing the right gear ratio differential, tire size, or by adding a aditional reductor before the diff.
10 Likes
beside 540 RPM, many tractors have PTO mode that is synced with wheels.
people make forest trailers with axles from old three axle trucks.
one reductor box is necessary to match tire sizes though.
11 Likes
I found this INTERESTING FACTS on the internet, I just copied it here
On this day, 99 years ago, Irish engineer Harry Ferguson received a patent for a three-point hitch with a top link, or popularly known here as a “toplinger”. At that time, many other companies tried to solve the problem of accepting tractor attachments in their own ways. After Ferguson’s invention, which was called the Ferguson system, soon all manufacturers of agricultural machinery, including Case and John Deere, adopted Ferguson’s solution as the best.
Here, for all of us who are mowing these days and “unhooking” and “hooking” all day long, let’s remember the Irish engineer and at the end of the day let’s toast with a beer in his honor. Although we prefer wine here in Slovenia, as an Irishman, he certainly preferred beer. It will be expensive for him. Thanks Harry🍺.
19 Likes
That is what threw me off. None of my tractors had anything but straight 540 rpm pto’s.
8 Likes
My Agria turns the axle the other way if I drive backwards Maybe I touched something, not ok in my opinion unless you want to drive a trailer like Tone.
6 Likes
Probably most people are on vacation, so there are few posts on this forum,… joke … 
The classic procedure for starting a tractor on 100% wood gas, … here is this “dance” around the tractor, right JO.
11 Likes
I installed a vacuum gauge in the intake manifold, it is interesting to monitor the movement of the pointer, full load is -0.1Bar, normal driving -0.2 to -0.4 bar, idle -0.5 to -0.6 bar,
driving downhill -0.8 bar
12 Likes
Yeah, proper waltz steps
That’s 40 inches of water. It would be interesting to know what’s what - air supply, charbed, filter, throttle. But I know - I still have no idea on my own rigs, except what I’m pulling on the rails.
10 Likes
JO, this measurement tells me how much combustible mixture the engine captures, when it is idling, 40% is enough, it is necessary to take into account that about 10% of the burnt gases remain in the engine (this is the volume of the compression chamber), so, these 40% of the volume are needed for the engine to rotate at all, and the other 50% do the work.
At full power, the vacuum is -0.1 bar, here I lose 10% of the mixture, a lot of this is due to the resistance on the gas mixer (I think 0.05 bar), and the rest is the resistance of the wood gasification system. I think there is no need to reduce the resistance here, it will not bring a big difference in power, especially it does not make sense if the engine has a high CR.
11 Likes
Today that’s funny. Yesterday evening we loaded the last of about 450 “old man bales” into the loft. I feel like it’s vacation time, even if there’s still plenty to do. I have lots of quality help, but some loads I do alone when no one’s available. The electric hoist is a blessing. It’s a lot nicer than filling the front end loader bucket from the trailer, and unloading it in the loft. We also have a beat up bale elevator, but without help, putting a bale on at ground level, climbing the ladder to the loft and picking it up and stacking it, gets old fast. It also tends to blow up some of our less-than-perfect bales.
It’s raining this morning. We’re grateful for God’s kindness in irrigating things for us just when we’ve gotten the hay under cover.
edit:
I forgot to add a Happy Independence Day! We are grateful for the freedom we enjoy, and thankful to God for His goodness and mercy regardless of which direction governments may be going at any particular moment. It is indeed a vacation day, and we will enjoy feasting later, including sweet cherries from the four gallon (15 litre) harvest from the little cherry tree that ripened first.
14 Likes
Hi Tone
Again, I don’t understand! How did you manage to deduce the cylinder filling rate from the vacuum in the intake manifold? 
5 Likes
Thierry, the power regulation of an Otto engine is done with the throttle valve, which means that the throttle valve is almost closed when the engine is idling, so the engine sucks in only a small amount of combustible mixture, well, this is reflected in a fairly large vacuum in the intake manifold (-0.5 bar), if we drive down a slope, the engine rotates faster and creates an even greater vacuum, because a significantly larger amount of mixture cannot flow through the small gap of the throttle valve. Now imagine a fully open throttle, the engine rotates slowly, so the engine cylinders can be completely filled with combustible mixture (0 bar or 1 bar absolute pressure) and the engine reaches maximum torque. Then the engine speed increases, the gas velocity increases, the throttle is still fully open, and now the vacuum in the intake manifold begins to increase due to the resistance of the gas mixer, filter, cooler and gasifier,… and at approximately 2500 rpm the vacuum in the Fergi (when the system is warmed up) is -0.1 bar. Measuring the pressure (vacuum) in the intake manifold shows us how much combustible mixture the engine is actually filled with at different speeds and we can monitor the pressure difference that occurs with increasing speed at a fully open throttle, which is good information about the flow rate and capacity of the wood gasification system.
11 Likes
Tone, you’re a great communicator, thank you very much. But I’m still wondering how 0.5 bar translates to 40% fill? Is it a rough estimate or a mathematical calculation?
8 Likes
You made an excellent description Tone.
ThierryT. a 150 years experiences with cylinder bored internal combustion engines gives good guidelines on what can be achieved.
Other important factors than just the weight stack of atmospheric pressure is the varing TIME allowed for cylinder filling. Time being determined by the engines RPM. Time-for-filling being effected by the air temperature-density. Time being determined by the opening and closing rates of the valving arrangements.
Another affecting factor is the established flow movement speed; and the momentum of the slug of air drawn in.
The comparison is between a completely non-throttled engine like the older traditional diesels able to combust with widely varying air-to-fuel ratios. Versus a must be air-in restricted throttled gasoline/kerosene/ LPG spark ignition engine to keep the desired-power air-to-fuel ratios into the fuel specific needed combustible ratios.
Using just atmospheric pressure to cylinder fill a poppet valved gasoline engine is consider to only fill at ~70% of the cylinders capacity. The same arrangement as a non-throlled diesel fills at ~80% of cylinder capacity. Mild forced induction gets back the missing percentages. Then positive pressure boosting can make a smaller engine think it is big. Big power means more heat. More mechanical forces and pressures to restrain and direct.
Many calculate. Real engineers measure results. The net affects of all factors. Monitor secondary effects; like created, accelerated wears.
Steve Unruh
10 Likes
I think the 10% that seems to be missing is the 10% dead space (compression space) gasses left over from the previous cycle, which were not expelled with the exhaust stroke. Approximately, maybe.
6 Likes