userscott
Junior Member
Joined: March 2019
Posts: 96
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Post by userscott on May 3, 2019 8:45:47 GMT -5
More bits slowly building up, snapping the bargains as I find them. Two Wika 213.55.063 gauges and a Parker 4F-SN6LR-SS needle valve.. Multiple gauges not essential but a nice luxury. Heaven knows at some point I might get on with assembling this thing!
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userscott
Junior Member
Joined: March 2019
Posts: 96
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Post by userscott on May 25, 2019 19:10:03 GMT -5
Evening all, been a while since I updated but slowly but surely it's carrying on. Only getting an hour a week or so on her at the moment but it'll pick up soon I'm sure. Fuel pump and needle valve etc mostly complete, it's enough to start mocking things up with: Start of the switch panel wiring: The switch panel itself, laser engraved 316 stainless: Rolling and welding the cone adaptor: Jet pipe in the background, it wants cutting down I think! The CC and outlet are stacked up. The FT has a smooth flow through and straight into the bend: Showing the flow out of the CC. I will roll up the ring to surround and seat the FT once I've made the FT itself up, it's still on the drawing board..: Couldn't help myself...:
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userscott
Junior Member
Joined: March 2019
Posts: 96
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Post by userscott on May 30, 2019 17:44:25 GMT -5
Knocked up a rough draft today of some of the pipework.. Still not sure where to put the fuel tank.. Flange to CC. I think it's a bit long overall, I might shorten it..
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userscott
Junior Member
Joined: March 2019
Posts: 96
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Post by userscott on Sept 15, 2019 18:08:23 GMT -5
Hi all, Been off grid for a few months, rebuilding the workshop so the engine was on hold. Picked it back up again a few nights ago so made some progress. Hope I didn’t get it wrong as it’s all welded now. 😂😂 Had a few questions about oil systems. Do people run breathers, regulators, catch cans etc or are people keeping things simple? Can’t find a consensus in the build threads... ☺️
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Post by racket on Sept 15, 2019 18:27:37 GMT -5
Yep , breather on the oil tank , generally we just discharge it somewhere convenient , I have used a catch tank , regulators are optional but it makes life easier if there is one , the Subaru oil pumps I use have regulators, bypass and oil filter included in them as standard .
Nice stainless work , but there should have been a bit of a diffuser where the comp delivery tube meets the outer combustor can so as to improve flow area , your setup will suffer from large amounts of turbulence/backpressure at that point .
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userscott
Junior Member
Joined: March 2019
Posts: 96
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Post by userscott on Sept 16, 2019 6:13:36 GMT -5
Thanks for your advice on the oil systems. It’s been bugging me for a while... I will brave it now. It’s not too impossible to put a diffuser in, ironically I had already had it laser cut and it was sat on the bench waiting to be rolled. Oh how I wish I’d not been lazy now.
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CMDR_Boom
Member
Joined: September 2019
Posts: 23
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Post by CMDR_Boom on Sept 23, 2019 11:21:28 GMT -5
All tongue and cheek here, but the last time I saw a jet-powered kart on rails, it was out in the desert with a missile attached to the top end. Have you invested in a good crash helmet?
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userscott
Junior Member
Joined: March 2019
Posts: 96
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Post by userscott on Oct 6, 2019 18:35:25 GMT -5
All tongue and cheek here, but the last time I saw a jet-powered kart on rails, it was out in the desert with a missile attached to the top end. Have you invested in a good crash helmet? I have, yes, and a nomex suit! What can possibly go wrong though! Latest updates, it's been slow so sorry. Larger fuel tank mounted, frame 75% complete, and generally some progress in the right direction... A picture speaks a thousand words though.. Lots left to do..
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Post by smithy1 on Oct 6, 2019 21:25:07 GMT -5
She's certainly looking rather heavy, what's the intended top speed..??
Smithy.
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userscott
Junior Member
Joined: March 2019
Posts: 96
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Post by userscott on Oct 7, 2019 7:04:55 GMT -5
She's certainly looking rather heavy, what's the intended top speed..?? Smithy. The current weight, as it sits in the picture, dry and with 95% of components fitted is 95 kg, so not too bad. Remember with it running on rails we have a contact patch of metal to metal about the size of a dime and pretty much nil friction. If you push it with your finger it will roll the length of the workshop. Top speed TBC....
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userscott
Junior Member
Joined: March 2019
Posts: 96
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Post by userscott on Oct 16, 2019 7:57:09 GMT -5
Stripped down last night for the last few bits of structural welding to be completed. Chassis is just under 50 kg including wheels and brakes. As before, it seems heavy, but remember friction losses are low on rail.. Chassis is 2 meters long and 800 mm wide so it's a big girl!
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Post by racket on Oct 16, 2019 15:49:59 GMT -5
Looking good :-)
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Post by smithy1 on Oct 21, 2019 18:42:14 GMT -5
She's certainly looking rather heavy, what's the intended top speed..?? Smithy. The current weight, as it sits in the picture, dry and with 95% of components fitted is 95 kg, so not too bad. Remember with it running on rails we have a contact patch of metal to metal about the size of a dime and pretty much nil friction. If you push it with your finger it will roll the length of the workshop. Top speed TBC.... Well that's a lot lighter than I expected....well done Sir..! Smithy.
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userscott
Junior Member
Joined: March 2019
Posts: 96
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Post by userscott on Oct 22, 2019 7:27:28 GMT -5
Thanks gents!
Work is progressing well. All the joints that were tacked with the MIG are now being TIGed up to full strength, and all the parts are being fitted in their semi final fashion prior to paint. I have a few sneaky ideas for paint so I hope it looks cool!
I haven't yet rolled the flame tube for it. I had ideas and then changed them, so I really do need to draw up the new tube and get it welded up. One for the next few weeks...
General trivia question: I want to fit an oil cooler to the system. Currently the only sensible way I can do this is by putting it after the drain from the turbo. How much of a bad idea is this? My current oil capacity is 4.6 litres on the system..
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Post by racket on Oct 22, 2019 15:21:26 GMT -5
Bad idea for the oil cooler position unless you run a scavenge pump to suck oil out of the engine and force it through the cooler , if you only rely on gravity for flow you'll have nothing but problems
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