CH3NO2
Senior Member
Joined: March 2017
Posts: 455 
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Post by CH3NO2 on Oct 20, 2019 21:17:50 GMT -5
Are you training for special forces or an anti terrorism unit?
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Post by Johansson on Oct 20, 2019 23:07:41 GMT -5
Nothing work related, just something I enjoy doing and that gets me out of the workshop during the nice summer days.🙂
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monty
Senior Member
Currently being spanked by mother nature.......
Joined: September 2018
Posts: 400
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Post by monty on Nov 3, 2019 22:35:03 GMT -5
Nice off-hand....good enough for "work"  |
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Post by Johansson on Nov 5, 2019 4:41:29 GMT -5
I called the balancing company today and the turbine wheel will be ready for pickup next week, great news since I need everything assembled on the bike before I can finish the wiring and stuff.👍🏻
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Post by Johansson on Nov 7, 2019 11:02:17 GMT -5
Been getting the wiring done the last couple of days, much tidier than before and I try to keep the wires to a minimum. The backlight for the gauges had to go among other things, if it aint there it cant break. Or get sucked into the engine.  I have also powder coated the intake bellmouth, pardon the crappy sanding job before coating but being a race bike it only has to look good at a distance. Passing by at 200mph.  Cheers! /Anders |
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Post by azwood on Nov 7, 2019 15:07:01 GMT -5
Looking good will it have an intake screen to prevent small mammals being sucked in their haha
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Post by Johansson on Nov 7, 2019 16:02:41 GMT -5
Looking good will it have an intake screen to prevent small mammals being sucked in their haha Havent decided yet, there is not enough room for a proper large area screen but it would put my mind somewhat at ease if I had one. |
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Post by Johansson on Nov 9, 2019 11:44:16 GMT -5
The wiring is more or less done now, just a thorough function test and some tidying up with cable protection hoses later on. My big plan was to make the wire harness OEM style with fancy connectors. I borrowed a connector kit from Olov, managed to destroy the first connector, got spitting mad, cursed the female reproductive organ, gave up the whole idea and did it the way I use to instead. The kitchen tape will perhaps be replaced.  A preheat/post run cooling fan has been fitted to the bike just like before, it is great since it pushes enough air through the engine after a run to keep the billowing flames away that sometimes happens when the fuel in the manifold cooks off.  Cheers! /Anders |
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Post by Johansson on Nov 21, 2019 14:39:13 GMT -5
Last Friday I picked up the power turbine wheel at Turbotech, Magnus who owns the place sponsored me with both the balancing and the manifacturing of the special balancing shaft which I am super thankful for!  Now I could start assembling the gearbox!  I used the inductive heater at work to fit the rear pinion bearing, a snug fit on the shaft so a bit of heat helps a lot.  Fits like a glove. I´ll remove the seals and wash the grease out with kerosene later.  Cheers! /Anders |
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Post by racket on Nov 21, 2019 16:27:08 GMT -5
Hi Anders
Now thats a fancy way to warm up a bearing, a bit more professional than the kitchen oven ;-)
Nice to see it all going back together again
Chers
John
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Post by Johansson on Nov 22, 2019 14:03:50 GMT -5
Hi John, Those inductive heaters are really useful, too bad they can´t heat the bearing race for removal from a shaft as well. I hope to have the bike assembled and ready for some oil flow tests in a week or two, might have to pick up some rags first since the garage floor tends to get pretty slippery during the oil system tests. Cheers! /Anders |
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Post by Johansson on Nov 23, 2019 10:42:10 GMT -5
Today I have assembled the pinion shaft to measure up the gear backlash, earlier I haven´t payed it much notice but with the shitload of torque I´ll be getting from JU-02 I really need to do this properly.  With the gearbox assembled like it was before I measured an axial play on the pinion shaft of almost 0.8mm, way too much.  I found this information about bevel gear backlash, since the pinion shaft gets a bit hot I want to be on the generous side of the chart so I guess that 0.2-0.25mm is a good number to aim for. Anyone familiar with this please correct me if I am wrong.  Cheers! /Anders |
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Post by Johansson on Nov 24, 2019 13:33:22 GMT -5
The morning job was to shim the pinion shaft and assemble the gearbox, here I have just fitted the front bearing that sits just behind the turbine wheel.  A length of 1.6mm stainless TIG rod is used to secure the center bolt that holds the curvic coupling on the shaft.  And finally the whole drive train is resting assembled on the table, it will be interesting to find out if the sliding fit interstage duct will be leak free and still able to take up the expansion.  The C20 NGV will certainly make a big difference in power transfer to the turbine wheel, there is unfortunately no way of finding out how much better it is than the home made NGV I used before but at least I know that this is as good as it gets. Cheers! /Anders |
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Post by racket on Nov 24, 2019 15:58:45 GMT -5
Hi Anders
Coming together nicely :-)
Cheers
John
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Post by Johansson on Nov 24, 2019 16:20:27 GMT -5
Hi John, With the running temps hopefully a lot lower than with the JU-01 I plan to take a bit more scientific approach (sure...) to the test runs than just slamming the throttle and see how fast it´ll go. If I do several lowish speed runs just to get some mileage on the bike eventual issues should show up in time to correct them before any full speed tests. For next year there won´t be any racing done, I plan to find a stretch of track to do the tests and sort out the bike without a set race date that would rush things. I just want to get back in the seat and get a feel on the new engine! Cheers! /Anders |
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