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Hello, I'm installing a new hydraulic pump, the 'in' and 'out' are opposite of what I need. I can I simply flip it upside down? This is the pump: https://www.surpluscenter.com/Hydraulics/Hydraulic-Pumps/Gear-Pumps/0-24-cu-in-Dynamic-GPF2004PC-Hydraulic-Pump-9-7786-B.axd

Relief pressure on the valve is factory set at 2000psi - I didn't adjust it. Maybe I should. The pump can stall the engine.... I think. The engine hasnt been run in...5? years; at full throttle it runs like crap, same at idle, but great at 1/2 throttle! Lets say it might need a little work...

Thank you for saying that, I completely agree with the slewing. I know beauty is in the eye of the beholder, but I really like the looks of this thing over the HF. Having operated both a slewing machine, and a swing boom machine, I believe slewing is far superior. With any project, there are...

I thought about that too - but also thought about just getting a smaller pump. The flexing of the base has been fixed too, some front & rear supports just below the base. Its solid as a rock. - however, the slamming down is still an issue. Pretty sure I can use this thing as a long splitter.

I completely agree. 5.5HP paired to a two stage 3GPM/11GPM What size pump are you thinking?

I think is needs a little bit of a redesign. I made a video on the build and problems if anyone cares to see it

Thank you for the congratulations, its nice to see some positivity here on my project. Here is some of what I learned 2.3 minutes after firing the engine up for the first time; Non-selfpropelled/tracked machines absolutely suck to move. Anybody that owns one and say they are just "slow" is...

Taylor Swift was right, haters gonna hate hate hate

Awaiting a box from Surplus Center - It should be able to test run this week.

$22 & $37 each! Yikes. At least I can get away with the cheap fittings every other hole- I think the local hose guys said he doesn't have any of those. Ill go check before ordering them for him. thanks for the reply!

Things were going great on my project until it came time to install some 90's on my valve block. -Can't screw in more than 1. How the HE Double Hockey-Sticks am I going to make this work? Valve block ports are #8 SAE, and those are 8 SAE to 8 JIC 90's Also have long ones for the top - which...

This is the Vevor Cut-50 It doesnt suck exactly, but my buddy has a Miller 625 Plasma Cutter (I think) Its the smallest model that is both 110 and 220 - I used it twice; from what I remember it cut beautifully. Right after borrowing it, I was making nice straight cuts free-hand and felt as...

I didnt want it to look home-made, as much as possible. Because of this I went with many rounds and special cuts - which granted took much longer, but hopefully gives me a nicer end result. You can do it with a grinder, its just not fun a will probably take a cutting disk for every cut - but...

Most straight cuts were done with a grinder (can get straighter, and a cleaner cut) The curves, mostly inside corners, were first cut on my CNC router into some 1/4" material, then the hand-held plasma cutter follows it as a jig or stencil. Works...decently. I have to come back and clean off up...

this is for the rotation of the mini excavator I'm making. Small motor spins (or will) the machine. I'll need it to 'lock' when not in use. its a 400rpm motor, with a 1:32ish gear reduction - It shouldn't be too shocking when the motor stops. Should I not worry about it - thus leaving it as...

Well, I see I know more and more about hydraulics every day. With a D spool, does that mean the motor can free wheel when the valve is centered/not in use? I dont want this.

Hello, Newbie here - I have the below control valve, and I want to connect it to a hydraulic motor. Listing states: Common Uses: Operate hydraulic cylinders (Double-Acting or Single-Acting) Operate hydraulic motors ("D" Spool Required) Well, what the heck is a "D" spool? Ive googled...

Its coming along!

Making progress on the boom

This tractor from the late 40's should give you some ideads. Also, a small DIY garden tractor is not an uncommon thing to do. You'll need to shorten a rear, and use some minor machining methods for a pulley, but its doable. Also, If you can find a 1970's ford with a 'granny low' 4-speed, that...

Got the Base built! It looks big, but its only 3x7. Tested it with the 'jump up and down on it' method. so far so good. Not to happy with the butt welds on the legs, ill add in a backing plate soon enough.

That Ditch Witch That Ditch Witch looks like an interesting machine, but after owning a ditch witch, I don't think I will want one again. Parts are available, but with many very unique parts they are only available from them for $$$$$$. Like my Case loader - 0 parts availability. You are making...

Thank you for taking the time to reply. I was guessing it was 10 mil, thats a little thick for me to weld even with my 220v Mig. Im not against buying a stick welder for the project though. I don't know what he was saying in the video, but I strangely understood it. Also, as I don't want to...

I am trying to copy a known, functioning machine; minus the drivetrain.

2 stage pump. The HF uses a 9 HP, I believe it formerly used a 6. I've read a 2 stage pump, while being crappy when it cycles, solves this problem. I have a 2 Cylinder Kubota Diesel, and a Honda GC190....The 190 is used however. If the engine won't work, just let me know and I'll adapt. I...

I don't see me needing to dig more than 4' deep. 11 gpm seems pretty quick for a 2" cylinder at 14" (or whatever I measured, don't remember exactly" Eh, more learning?! I suppose I'll look into it.

Now we're talking. Because of the low HP of my Honda GX160 I was going to use a 6 position spool valve hooked to a double acting pump (with the 2 extra ports used to later upgrades or drivetrain) But this (if being able to be used with 5 HP) I could hook it to two 4 position valves and get the...

I apricate everyone's caution, I really do. I guess I'm just lost in the complexity of this. That being, I don't see it being complex at all, and really, probably the simplest machine one would make. Even the design, it not shifting the boom to the left or right so you wont have that side load...

A 5 gallon bucket of sand - so depending on moister content, 70-90 pounds.

Ive been looking for years. Thats how I got my dozer and Ditch Witch. I even have a Case 500 front end loader. Which is way to big for anything I need, but makes quick work of moving large objects; you just dare not leave the hard pack, or you'll get stuck. And pulling a 9,500 pound machine out...

Exactly, and pick the features you like, then ditch the ones that you can't duplicate or are too complicated, and assemble! Surplus Center only has one higher quality spool; a 6-8 open center is $150-$200 imported. Pricing is the start of any idea I have. Yeah I don't know any of these...

Yeah! Real crap. More of a garden tractor with a blade. But its so old, and so neat I can't let her go. Works perfectly fine, once you get past the lack of breaks and antiquated levers for operation. ...it was never equipped with breaks, but with steering breaks - which work if you are fast...

Vigo327 thank you for your reply and input. Mine too!!! I though of this too, and agree. I came to the conclusion it would be too weak for the complication. If I'm going to build a tracked machine, I would want the beauty of 360 degrees of rotation. After the cost of the rotary union, turret...

Only thing about $10k near me is an imported mini, which run 10k-13k. Which, the metal on them might be okay, but repair part and longevity is not going to happen with those. I'm no expert, but it seems any low priced used equipment on the west coast gets trailered into Mexico. Decent low...

Thanks for understand the mentality. When I tell people I want to build something, I always get asked "why?" my answer has always been a confused "why not?!" Its baffling to me sometime when people ask why I would want to do something myself when I could just buy, or pay someone to do it...

Beginning of the year I was going to buy the Harbor Fright version at $2,499 When I went to order, I found out my bank card had a spending limit of $2,500 a day - by the time it was resolved the sale was over and they were $3,000 again. I skipped the Norther version as they were over $5k I...

Couple hundred?! Its $500 a day, or $2000 a week, and you have to put your name on a waiting list where you get notified the evening prior to the machine delivered. AND! If you don't have a 1 ton truck and trailer, you have to pay the $500 delivery fee. I live within viewing distance of the...

I was thinking about using the same material on the whole thing (or, "body) I have about 2 sqft of 5/8th plate, anything else I would need to buy. Local metal shop doesn't have scrap, and only sell 4x8 sheets. One sheet should do it, and given the cost, I only want to buy one. It looks like...

More info on the pantograph machine please

Im going to try and build myself a mini digger, similar to the one pictured. Its a small machine with just under a 2x4 base, powered by a Honda GX160. Without the tracks - given the cost of the tracks, motors, roller wheels, sprockets, rotary union, and a turret bearing large enough for the...

Yeah, it does. They can be seen at the end of the cylinders in the 2nd photo.

I inherited an old trailer. By buddy who owned it previously, never messed with the hydraulics, and the trailer worked as a trailer, thus he didn't care. I would like to fix it, just so I can use the trailer to its full potential. It looks like its has long weird cylinders connected to each...