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Author Topic: APS/Ω Gas turbine bike build  (Read 405067 times)
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Mobacken Racing
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« Reply #435 on: April 15, 2014, 03:08:13 PM »

Picked up the frame an hour ago, it looks very good!





Cheers!
/Anders
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wobblywalrus
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« Reply #436 on: April 15, 2014, 09:45:36 PM »

It is looking good, Anders. 
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Mobacken Racing
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« Reply #437 on: April 16, 2014, 04:47:35 AM »

The worst part is that I need to make the rest of the bike look just as good...

In little over a month the bike will be displayed at a local car and motorcycle exhibition, so I need to have it mocked up by then.
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Mobacken Racing
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« Reply #438 on: April 17, 2014, 12:21:24 PM »

The ceramic bearings for the wheels and gearbox arrived today, but now it is easter holiday and three cosy days at my parents place with the families of myself and my brother so I´ll deal with the bearings next week.



Cheers and happy holiday!!!!!
/Anders
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Peter Jack
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« Reply #439 on: April 17, 2014, 02:04:32 PM »

Enjoy the holiday Anders. You've definitely earned the break.  cheers cheers cheers

Pete
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Mobacken Racing
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« Reply #440 on: April 17, 2014, 03:53:08 PM »

Thanks Peter!

By the way I´ve started to build a gas turbine powered outboard motor, we have a local fishing contest that we aim to attend with this engine and a pair of sailor suits this summer... smiley



My bike engine and my boat engine, a bit of a size difference.



The newly built engine casing, 1.5mm stainless instead of the original 0.5mm.



The engine in its test stand.



Turning the power turbine shaft down to size.


Power turbine ready with bearings, sleeve and primary chain sprocket.



I hope I am not venturing too far away from the original topic, if so please say so and I will keep to the bike updates from now on.

Cheers!
/Anders
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maj
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« Reply #441 on: April 17, 2014, 04:15:05 PM »

Be as broad as you want, its your thread and its interesting  cheers

Have a happy Easter
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Buickguy3
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« Reply #442 on: April 17, 2014, 08:29:10 PM »

   Love it, Anders.
   Doug  cheers cheers cheers
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Glen
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« Reply #443 on: April 18, 2014, 10:20:33 AM »

Your projects are so interesting, lots of cool ideas and super craftsmanship.  cheers
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Glen
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Mobacken Racing
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« Reply #444 on: April 18, 2014, 01:40:13 PM »

Good to hear, I have lots of minor projects that might interest you guys so I will show you some of them when time permits.  smiley
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grumm441
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« Reply #445 on: April 21, 2014, 04:41:44 PM »

Good to hear, I have lots of minor projects that might interest you guys so I will show you some of them when time permits.  smiley

I don't think I'll live long enough to complete even half the projects I have lined up
G
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Mobacken Racing
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« Reply #446 on: April 21, 2014, 11:12:33 PM »

I second that, it is a bit annoying to hear lazy people complain that they have nothing to do when you would need 48h each day to complete half of the projects you would like to do...
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grumm441
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« Reply #447 on: April 22, 2014, 06:03:27 AM »

Perhaps one of those small turbines for my Heinkel Tourist?
G
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Mobacken Racing
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« Reply #448 on: April 23, 2014, 11:18:25 PM »

That would be interesting for sure. smiley

Now when the holidays are over I found time to start working on the gearbox, I fitted the gas producer to the frame to free up some space on the work bench and it looks like it has found a good home. smiley



Taking the power turbine section apart to get to the gearbox.



Here you can see the output shaft gear...



...and here is the input shaft housing, now you have seen the two spots in the gearbox that is a bit tricky to lubricate properly.



I spent over an hour staring at the parts trying to figure out a way to do this, I have had discussions with John and the way we decided then was to direct a jet of lube on each input bearing and one directly into the gear mesh but looking at it now that won´t be easy to do.

I would either have to bleed oil from the main pump and connect the gearbox and oil tank somehow or fit yet another oil pump to the bike and run a closed loop inside the gearbox, but since I already have four pumps running from the battery I´d rather not do that.



I came up with a bit of a special solution for now, I will run a wet sump that will keep the <5000rpm output shaft and bearings lubricated and route bleed air through an oil mist lubricator (used for lubricating pneumatic tools) and into the input shaft tunnel between the bearings. The hybrid bearings don´t need much oil and the bleed air will cool them and provide an air flow that will keep the exhaust gasses from entering the shaft tunnel.

All I need to do is trim the oil flow and keep a close watch on the oil level in the oil mist lubricator so it won´t run dry but that will only be another point on the pre run check list. I´ll inspect the gear mesh and bearings after the first couple of runs to check for signs of oil starvation and wear, if it shows any signs of damage I will simply have to rethink. This is the easiest way of doing it and I like easy. smiley

Cheers!
/Anders
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tauruck
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« Reply #449 on: April 24, 2014, 10:48:44 AM »

I love this build but if I said I understand I'd be lying.

Anders, you're going to say it's not that complicated now aren't you?. grin grin

Too cool. Great workmanship. Thanks man.
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