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Post by Johansson on May 14, 2024 11:07:17 GMT -5
Really nice project! Turboshaft vehicles are so much fun, and with an adult sized bike it will be a thrill to ride.
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Post by Johansson on May 10, 2024 10:59:41 GMT -5
A minute here and there and the engine stand is "finished", it needs some paint but I save that until all the gauges and mounts are welded to it. I will add some sort of thrust stop to the front bracket later. The weather was so nice that I had to take it outside, first time in the sun since its birth. The Mercedes makes for a good size reference, it is a pretty big bastard. Cheers! /Anders
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Post by Johansson on Apr 29, 2024 23:19:32 GMT -5
Hi John, I´ll make sure to tie it down properly so it won´t flip over. My workshop will always be a mess, but at least now I have a proper table in the middle of it.
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Post by Johansson on Apr 29, 2024 14:34:43 GMT -5
Hi guys! I had to pause the build for a couple of weeks to get the workshop sorted out and some house overhaul done, now the mill is installed and test run. A really nice upgrade! When the workshop was emptied I decided to build myself a proper welding bench, instead of the crappy one on wheels I had before. I made one from a 1000x1000x15mm steel sheet so it is plenty sturdy. I bolted the sheet metal bender, a mechanical press and a small vice to it, and added a shelf underneath for the welders and filler material. A good thing about this is that the old welding bench frame can be made into a nice rolling engine stand, that is my next step on the engine project. Cheers! /Anders
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Post by Johansson on Apr 9, 2024 14:57:07 GMT -5
It is a beautiful engine and installation Andy! I know the feeling when you have tested everything at home and when you hit the race track nothing works any more....
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Post by Johansson on Apr 8, 2024 14:13:20 GMT -5
I upgraded my mill today, for years I have been eyeballing a SAJO UF52 duomill with a drill press style mill head and when I found one for sale that was not on auction (I hate auctions) I just had to buy it. It is more than twice the size of my old mill so I have to rearrange the workshop quite a bit, but I think it will be great when I am finished. The hydraulic press, the rollers and some other stuff that I don´t use very often will be placed in the cold shed. So bear with me until I have everything in order, it will take a couple of weeks before I can continue building my jet engine. Cheers! /Anders
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Post by Johansson on Apr 7, 2024 15:27:43 GMT -5
The workshop is almost empty at the moment, I will get a nice upgrade in machinery tomorrow so I have had to make some space. Stay tuned...
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Post by Johansson on Apr 1, 2024 13:47:52 GMT -5
The ignitor that Andy built for me arrived this weekend, I tested it just now and holy smokes does it give nice sparks! With the uneven spark pattern that I love from "real" gas turbines, awesome! Thanks a lot Andy for helping me out.
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Post by Johansson on Mar 27, 2024 15:57:16 GMT -5
I've seen some turbos with a nylon wear surface in the compressor housing to allow them to self clearance. Might be a bit harder to do on a turbine! I don´t think nylon is the material best suited for the turbine stage. But some spray coated porous ceramic material might work. Thanks for the kind words guys, redneck machining at its finest. *LOL*
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Post by Johansson on Mar 26, 2024 15:28:10 GMT -5
Nice! Best of luck with the maiden run!
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Post by Johansson on Mar 26, 2024 15:07:30 GMT -5
I decided to fix the turbine blade clearance tonight, started off with the air grinder in the tool holder but I soon realised that this will take ages. What to do, what to do? I need a bigger grinder.... Worked like a charm, I used a crowbar to adjust the sanding belt pressure on the blades while grinding. I set the tip clearance to 1.3mm, judging from the looks of it I don´t think I should open it up much further. No more work on the engine before Easter, the weather will be crappy but it will still be a cosy weekend in the cabin with the kids. Cheers! /Anders
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Post by Johansson on Mar 26, 2024 0:11:42 GMT -5
My guess is that it is heat distorsion, tensions in the castings letting go or a combination of both.
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Post by Johansson on Mar 25, 2024 0:22:13 GMT -5
you need an abrasive NGV ring so the turbine can clearance itself That would be nice, perhaps add a diamond dust coating to the blade tips so they wear a track for themselves in the metal.
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Post by Johansson on Mar 24, 2024 2:04:50 GMT -5
The only thing I really am looking forward to in the future is when affordable metal 3D printers hit the market, imagine being able to print aluminum gaskets, turbine blades in inconel, etc etc. Except for that I would rather live in a cart and donkey century. The day we get household metal 3d printers is the day we all can just print a whole engine whilst not lifting a finger lol Wait a second, that would be a horrible scenario! Droves of formerly preoccupied hobbyists aimlessly roaming the countryside, leaving behind them trails of havoc and unwanted pregnancies. Highly likely the beginning of the end of civilization as we know it.
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Post by Johansson on Mar 23, 2024 16:42:02 GMT -5
The only thing I really am looking forward to in the future is when affordable metal 3D printers hit the market, imagine being able to print aluminum gaskets, turbine blades in inconel, etc etc. Except for that I would rather live in a cart and donkey century.
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