turbob
Member
Joined: March 2020
Posts: 11
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Post by turbob on Mar 14, 2020 9:04:54 GMT -5
This is a really cool build. Look at that turbo! I didn't read the entire thread, but where are you going to test it? Do you work for the train, or have an abandoned rail near you?
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userscott
Junior Member
Joined: March 2019
Posts: 96
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Post by userscott on Mar 14, 2020 21:09:10 GMT -5
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Post by racket on Mar 15, 2020 17:35:10 GMT -5
Hi Scott
It looks like the full "glass cockpit" isn't too far away from DIY turbines , nice neat display , heh heh , you're setting a new benchmark, maybe a joystick between the knees is all thats left to complete the picture ;-)
Cheers John
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userscott
Junior Member
Joined: March 2019
Posts: 96
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Post by userscott on Mar 15, 2020 19:19:28 GMT -5
Hi Scott It looks like the full "glass cockpit" isn't too far away from DIY turbines , nice neat display , heh heh , you're setting a new benchmark, maybe a joystick between the knees is all thats left to complete the picture ;-) Cheers John Thanks John! Yep it's taking some effort... the real challenge in packaging is that it's actually far, far smaller than it looks in the pictures. Most people are shocked when they see her in the flesh but I promise you, it's quite small. It's far less than "knee height" and the base of the seat sits 4" from the floor. So the full width display unit is actually only 560 mm wide....! Generally everything is so tightly packed in that when you see the detail it's actually quite a nightmare. One of my earlier units was petrol-electric with a 250 amp DC generator powering a 14 kw motor. It would generally need a full day stripping down to do anything on it... Back to this madness...! Today I had a go at fitting the oil pump. The first shock I got was that the new Marco unit has a warning on it about using PWM controllers. I didn't know about this and hadn't seen it in their documentation until I saw it on the sticker today. It warns that use of a PWM is not possible due to an EMF suppressor inside. Has anybody had experience of this? It seemed to work fine on my 4QD Porter 10 speed controller.... I had to cut out quite a large amount of the existing structure to get this pump in - and let in a new underslung bracket to hold the oil pump. I didn't think it was going to get in, but we got there...!
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Post by racket on Mar 15, 2020 20:36:46 GMT -5
Hi Scott
Sorta like when trying to fit everything into a bike , its a nightmare getting things mounted yet still finding room to sit on it , you're doing a great job of it :-)
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Sweetenough
Veteran Member
Joined: April 2016
Posts: 121
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Post by Sweetenough on Mar 16, 2020 4:46:44 GMT -5
Hi Scott, Nice work! I have used a Marco UP12 with PWM control without any issues, see old installation photo Using a pressure transmitter with a PI-controler in the control system, works great and deliveres a steady oil pressure as long as the oil is cooled enough. Do not recall that there was any warning sign back then when I installed it (2016) Kind Regards Thomas
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userscott
Junior Member
Joined: March 2019
Posts: 96
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Post by userscott on Mar 22, 2020 11:57:25 GMT -5
I managed to get the flame tube rolled yesterday, I needed help with this as my rollers really don’t like 2.5 mm stainless! I’m thinking of putting a sleeve on the cap rather than welding the FT to the cap. It would give me better access to the nozzle etc? The oil pump is settled in nicely, just waiting for my external pressure relief valve to arrive from the states and hopefully it’s done - oil wise at least...!
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userscott
Junior Member
Joined: March 2019
Posts: 96
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Post by userscott on Mar 23, 2020 20:57:48 GMT -5
We are getting extremely, extremely close to firing her up... the wiring was finished tonight (hurrah!!) and the flame tube cap. Just got to weld on the fittings for the propane line and the spark plug socket onto the CC. The PRV for the oil system is due any day now, and the bits for the new spark generator are in the post. Very quickly running out of jobs on her..! I can genuinely see the light at the end of the tunnel after 12 months of headaches!
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userscott
Junior Member
Joined: March 2019
Posts: 96
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Post by userscott on Mar 24, 2020 20:57:21 GMT -5
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userscott
Junior Member
Joined: March 2019
Posts: 96
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Post by userscott on Mar 25, 2020 16:16:10 GMT -5
Tonight’s progress so far, fuel nozzle fitted. I need to get the propane tube in. I was intending to fit a tube 6 mm wide, with the end blanked off, with 6 x 1 mm holes in a row around the end pointing towards my primary holes. Have I missed anything?
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Post by racket on Mar 25, 2020 16:46:28 GMT -5
Why is the fuel nozzle displaced so deeply down the flametube ??
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userscott
Junior Member
Joined: March 2019
Posts: 96
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Post by userscott on Mar 25, 2020 17:09:31 GMT -5
Why is the fuel nozzle displaced so deeply down the flametube ?? In that position due to the 160 degree nozzle it hits the primary holes as per this diagram:
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Post by racket on Mar 25, 2020 17:53:19 GMT -5
That makes sense , forgot about the wide angle sprayer
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userscott
Junior Member
Joined: March 2019
Posts: 96
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Post by userscott on Mar 25, 2020 19:16:28 GMT -5
That makes sense , forgot about the wide angle sprayer Hopefully it works.... with regards the propane system, I was intending to fit a tube 6 mm wide, with the end welded up, with 6 x 1 mm holes in a row around the end pointing towards my primary holes. Have I missed anything? Other tasks completed tonight, fuel pressure relief valve fitted, parachute bracket welded up, painted and fitted....
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Post by racket on Mar 25, 2020 19:32:28 GMT -5
Be careful that the propane flame doesn't heat up your main fuel sprayer , if the propane is only for a pilot light then injection only towards the ignitor rather than across the whole flametube might be a wiser route to go.
Looks like your jobs to do are running out fast :-)
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