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  1. #21
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    As I recall you have a few of those diesel lawn mower engines to play when you run out of other things to do.

    Back to my dead radio its far enough into the modern era that its all surface mount tech so no way I'm going to even give it a try.



    I looked at the link to the 3d file and I have to say that is neat. I've seen that short on tv but to see it and manipulate it on my laptop is very cool indeed. 73, and GN, Mike
    "Profit begins when you buy NOT when you sell." {quote passed down to me from a wise man}

    Now go beat the copper out of something, Miked


  2. #22
    alloy2 started this thread.
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    Quote Originally Posted by miked View Post
    As I recall you have a few of those diesel lawn mower engines to play when you run out of other things to do.

    Back to my dead radio its far enough into the modern era that its all surface mount tech so no way I'm going to even give it a try.

    I looked at the link to the 3d file and I have to say that is neat. I've seen that short on tv but to see it and manipulate it on my laptop is very cool indeed. 73, and GN, Mike
    Mike I would;nt be so quick to give up on that radio, most common failures are capacitors. Surface mounted components are not a big deal, mind you I'm not speaking from experience here just a few youtube videos that I've watched on how folks remove and replace faulty components.

    Some guys even heat up the epoxy on encapsulated components to get at the faulty parts.

    Years ago I had a Radio Shack scanner, my buddy's kid dropped the scanner onto the floor and it quit working. Turned out the circuit board had cracked in half, I found a guy that could fix the board by bridging the broken printed circuits by soldering bridges using fine wire. Scanner worked fine after the fix.

    How old is your radio.

  3. #23
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    I haven't done any research other than the Yaesu web site in an attempt to figure out how old it is. I bought it used 2010 so I feel very certain it 15 plus years old. My research on yahoo groups FT-950 group is not encouraging.

    I am getting ready to sell it on ebay and expect to get between $300-400 for it. It could go higher as I have the factory shipping boxes. Original shipping boxes is a big deal with the larger ham radios.

    I know your feelings on ebay and I have had a lot of experience at the same time getting ripped off is always a possibility. Still ebay has the biggest audience and the best chance to get a fair amount for it.

    I am going to spend a little time doing some additional research on the problem with this radio but I think I will likely be looking for something new or perhaps new to me.

    Here is a link to one I have been looking at for a few months. Elecraft® Hands-On Ham Radio

    The exact models I like is the KX2 and the KX3. These are the complete opposite of a big desk top radio like the FT-950 but if you look over the features and some of the youtube videos you will see some of the attraction.

    Like I said I'm going to put some more time into research and then decide which direction to go. 73, Mike

    PS I don't know if I had mentioned it but I attended the Avionics school at the US Navy school near Memphis. So I have had some trouble shooting training and then worked on helos in the Marines for about 14 yrs. Frankly I did more soldering at home on my own equipment.

    My first hf rig was a Heath Kit SB-101, full of tubes. I replace some of the internal wires and redid the cold solder joints. It never did work on SSB but I didn't care. I only wanted to do cw so I pass the 13 words per minute test for my General license so I could play on the hf bands. That broken Heath Kit was the best thing for me, it forced me to use cw on the air and passed my code test easily. I finally got my Extra license but that was after the 20 word per minute had be eliminated, which i could have passed that test easily as well.

    Too much fun to still have, not enough time left. 73, Mike

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  5. #24
    alloy2 started this thread.
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    The Allis Chalmers 720 has a blown hydro static drive, inside some broken parts, motor housing damaged. All the parts with the exception of the motor housing were easy to find and or purchase.

    A cub cadet from the landfill had the Sundstrand Series 15 model C, Allis uses an inline transmission. Looking at them their different and night and day, internally share some of the same parts, like cylinder block and pistons. About $600.00 worth of usable parts for my rebuild.

    Gaskets and bearings were under a $100.00, used motor housing $195.00 and they sent the wrong one, they spent a week trying to locate the right one. Turns out the last order from Simplicity Mfg. was like 2011.

    The housing I need is on the left with the longer snout, I have it over at the machine shop. They're going to Tig weld to build it up enough to re-machine it to meet the specs needed for Allis.

    Scot was concerned about alloy incompatibility, so I told him to hack some pieces off the damaged unit to melt into the V of a piece of angle iron to make filler rod. He's telling me this could take some time, I say you've always got your lunch hours to use.







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  7. #25
    alloy2 started this thread.
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    I've had several skid steers, all hydro-static. Never had a chance to dive into one before, then the Allis 720 came along with a blown Hydro. I figured since it was gimped already no harm in taking it apart. My only regret was cleaning it up before disassembling, from what the previous owner told me thought it was toast.

    After disassembly found a few brass slippers had broken free from the pistons, the broken bits jammed into the rotating internal parts seizing the unit solid. Inside the hydro are two cylinder blocks, the nine pistons fit parallel. The brass slippers work against the swash plate.

    A small gear pump called a charge pump supplies oil to the Hydro pump, oil from there goes to the motor section, both the hydro pump and motor share the same piston assembly.


    Note: The charge pump also supplies oil for aux hydraulics, but the hydro has first demand on the oil supply.

    Pistons on the motor cylinder run against a swash plate, when the hydro is at rest ( neutral ) dead centre of plane there is no action against the piston slippers. When the Hydro is set to revers the swash plate over centres on its pivoting point to say the left, the hydraulic oil circuit is reversed, go forward the swash plate over centres to the right.

    A little to the right or left give slow mobility, fell right on the swash plate will give you full speed ahead.

    Ok, now we know how the hydraulic oil is regulated, the motor end pistons run against a fixed swash plate, oil fed to the motor cylinder will respond to the volume of oil supplied from the hydro pump depending on the angle of the swash plate.. The motor piston cylinder is splined to accept the output shaft, for tractor use the shaft has a pinion gear.

    If you attempt a hydro rebuild chances are there's a youtube to assist.

    Below are motor housings with fixed swash plates, the surface on mine was damaged from the broken brass piston slippers. I could have probably used it but I'm a bit to critical.

    Last edited by alloy2; 11-26-2017 at 09:01 PM.

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  9. #26
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    One hopefully small question. An explanation of swash plate(s) please.

    My experience with swash plates was with helicopters in the Marine Corps. The swash plate would be just below the rotors and would transfer the motion from the pilot's input to change direction. Interesting to me is the actual input would be 90 degrees in advance of the desired movement of the aircraft.

    Anyway good luck educating me and my old brain. Also thanks for sharing, 73, Mike

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  11. #27
    alloy2 started this thread.
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    Quote Originally Posted by miked View Post
    One hopefully small question. An explanation of swash plate(s) please.

    My experience with swash plates was with helicopters in the Marine Corps. The swash plate would be just below the rotors and would transfer the motion from the pilot's input to change direction. Interesting to me is the actual input would be 90 degrees in advance of the desired movement of the aircraft.

    Anyway good luck educating me and my old brain. Also thanks for sharing, 73, Mike
    Same principal, instead of dealing with air, the swash plate used in hydraulics changes fluid dynamics.

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  13. #28
    alloy2 started this thread.
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    Here's some pictures of the new Allis 720 hub that was machined from the 3D drawing.








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  15. #29
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    Looks great. Mike

  16. #30
    alloy2 started this thread.
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    Quote Originally Posted by miked View Post
    Looks great. Mike
    Thanks Mike, the transmission shaft that mates to the hub was also reproduced.


  17. #31
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    SWEET. You have some talented machinists doing the work. I know that because its mechanical it can't be an art form but I know it is.

    I've noticed that in the commercials on tv and the programs themselves the only characters who are held in high esteem are "artists". What hell happened to tradesmen or just a smiling face at the Wendy's down the street being worthy of respect. Sorry had a rant that just needed to jump out of my butt.

    Keep us informed on the progress of this project. 73, Mike

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  19. #32
    alloy2 started this thread.
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    Quote Originally Posted by miked View Post
    SWEET. You have some talented machinists doing the work. I know that because its mechanical it can't be an art form but I know it is.

    I've noticed that in the commercials on tv and the programs themselves the only characters who are held in high esteem are "artists". What hell happened to tradesmen or just a smiling face at the Wendy's down the street being worthy of respect. Sorry had a rant that just needed to jump out of my butt.

    Keep us informed on the progress of this project. 73, Mike
    Last summer coming back from a parts buy stopped in at a Burger King, usually I grab a meal to take out but was tired from driving and decided to grab a table and a news paper. Did not order a drink, whit out asking soon the waitress brought a glass of water to my table.

    Her actions were noted.

    Few years back I had taken in a huge load of scrap, aluminium and copper truck and trailer, after cashing in stopped in at a men's work clothing store fours young women working the floor. I did not remember my waist and leg size and asked to be measured, three of the four woman headed to the rear of the store while one jumped right to the task.

    Yea I was dirty from hauling in the load but this young woman did not hesitate to bring out her tape, with a bit over 8K in my pocket left her a $50.00 tip, next stop was the super store to stock up on grocery's. That was the day they signed me up for a credit card, one of which I'm still paying off.

    Cut the card up two years a go and have another four left paying it off.

    I always make a payment each month but not always the agreed upon amount, three days after the payment some dude from the collection used to phone, I've added all their numbers to my do not call list. I love my voip.ms telephone system for its manageability in blocking numbers, etc it's a full featured telephony system.

  20. #33
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    I'm glad you're still in the fight, it helps me on my bad days. Mike

  21. #34
    alloy2 started this thread.
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    Quote Originally Posted by miked View Post
    I'm glad you're still in the fight, it helps me on my bad days. Mike
    Dating cost lots of money, would have been much cheaper to purchase personal services from a street vendor.

    Yea I'm still in the fight but as the days pass I'm not finding much to fight about. Just putter along with my tractors and what ever happens to interest me upon wakening.

    Wanted to do some ice fishing this winter but it will have to wait another year, Pat's transmission is taking precedence.

    Last spring as the weather warmed up kept an eye on the smallish water holes not quite large enough to call a lake, what I was watching for is how quickly the ice melted, I found several water holes nearby that the ice stayed for a long time indicating very deep water. These water holes holding ice weeks longer are not fished by anyone I'm sure they'll have fish in them.

    Another good sign was to watch which water holes get fished by the Pelicans.

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  23. #35
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    [QUOTE=miked;274620]First I have had it verified I am the laziest member of the forum, my wife and dogs were on the committee who determined the findings.

    Interesting weed killing video. I viewed it on youtube so I could see what the plants were, thought it was corn, verified it is popcorn. So I have a weed burner nozzle that I have used with a 30lb propane tank to kill the weeds at the foundation of my house and the fence row. It is very effective, being lazy I need to mount it on to my lawn tractor so I don't have to carry it around.

    I have it on good authority that this is how fire ants came into existence

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  25. #36
    alloy2 started this thread.
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    Picked up the modified motor housing from the machine shop this afternoon, they did a great job.

    The housing on the right hand side below is the one modified to match the one on the left.








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  27. #37
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    On the way home from the machine shop visited one of our favorite landfill sites. Below a list of the goodies brought home.

    1. Samsung front load washing machine with smart drive motor - my wind generator project
    2. Blacksmith post vice - good for trade or gift someone.
    3. Refrigerated air dryer - nice to have conditioned dry air to paint tractor
    4. Water separator for air compressor - addition to air dryer
    5. Boat trailer winch - shelf junk trade or gift someone
    6. Unknown electronic device - tear apart, curiosity item

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  29. #38
    alloy2 started this thread.
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    I seem to have a thing for old lawn mowers, the Jacobsen reel mower cuts a 72 inch swath in one pass, not going to take much to get her running again.

    The other machine is a Toro Sand Pro, used to groom sand traps.


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  31. #39
    alloy2 started this thread.
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    Last year picked up this 15kw generator powered with a Petter PJ2 old school diesel.

    The Stamford gen head is 3 phase with multiple power configurations, it's currently configured for 220 volts single phase for domestic use.


  32. #40
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    Glad to see you are back.
    Give back more to this world than we take.

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