slittlewing
Senior Member
Joined: November 2017
Posts: 458
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Post by slittlewing on Apr 9, 2021 2:44:10 GMT -5
Glad to see it worked out with the transition Ben, you were brave doing it in one π
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Post by wannabebuilderuk on Apr 12, 2021 9:17:40 GMT -5
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Post by wannabebuilderuk on Apr 15, 2021 11:04:06 GMT -5
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Post by wannabebuilderuk on Apr 15, 2021 11:21:42 GMT -5
Father came up with a solution and seems to do the trick.
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Post by racket on Apr 15, 2021 16:54:27 GMT -5
Hi Ben
Nice funnel section :-)
I'm a terrible TIG welder, so always try where possible to have an overlap of edges , ~10mm is enough , then the stitching of the joint is easy,... butts I can't do :-(
Cheers John
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Post by wannabebuilderuk on Apr 15, 2021 18:33:40 GMT -5
Hi John,
This was attempted with a mig welder lol (clarke 150te) I really want a tig setup as mig just can't do thin precision bits. There is a large area made up of weld as I blew through it a lot when I took too much off with the grinder so it may melt away in the heat but we'll see,can always patch it up.
Ben
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Post by wannabebuilderuk on Apr 22, 2021 13:45:39 GMT -5
I couldn't resist at a good price with extras π Rohr wsme 200 ac/dc tig welder so now I won't ruin my flametube (hopefully)
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Post by wannabebuilderuk on Apr 30, 2021 12:04:22 GMT -5
I need more practice (only done about an hour lol) but felt like no filler welding it. Fucked up dome end but will patch that once I've ground off the balling. Not pretty but will do the job
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Post by wannabebuilderuk on May 5, 2021 4:40:41 GMT -5
Think I'm going with two rings comprising of 8 and 16 5.5mm holes for the dome with the nozzle boss / f/t retainer in the centre hole that'll be enlarged to the right size (about 1-1.5")
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slittlewing
Senior Member
Joined: November 2017
Posts: 458
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Post by slittlewing on Jun 18, 2021 2:52:11 GMT -5
Hi Ben,
How is your engine build progressing?
Cheers Scott
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Post by wannabebuilderuk on Jun 18, 2021 6:43:44 GMT -5
Hi Ben, How is your engine build progressing? Cheers Scott Hi Scott, Not done much recently as been lacking motivation to do anything nowadays lol. Currently out on the west coast of Scotland for a weeks sailing but when I get back I'll see if I can start working on parts as I know what to do having had all this time to plan out the processes ha. Ben
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slittlewing
Senior Member
Joined: November 2017
Posts: 458
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Post by slittlewing on Jun 18, 2021 13:38:57 GMT -5
Fair enough, sounds like a great holiday!!
I always say youβre either limited by time, money or motivation. If you have all three, projects will move on quickly!!
Cheers Scott
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Post by wannabebuilderuk on Jul 4, 2021 10:53:10 GMT -5
Finally got motivated enough to progress on the build and chose to finish the slip joint. Firstly I decided a little jig would be the best way to go so sketched it out from my 3d model of the f/t and worked out that 7mm pins would give the right radius for the 1mm plate since lines in 3d models usually have no thickness and that doesn't translate well into the real world unless you adjust for it (which I obviously didn't do enough as you'll see). Initially I just pushed the pins in as they had a 0.087Β° over 85mm taper (due to the lathe being a standard mass production shitty hobby one that does the job) however they wobbled during any hammering so did my first ali tacks. I didn't bother cleaning it completely as it's a piece of scrap for a jig and single use. And the end result is an alright "slip" joint that will work but I'll need to expand the hole in the plate till it drops in. Ben
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Post by wannabebuilderuk on Sept 4, 2021 11:16:02 GMT -5
Decided that 1.4s between each spark wouldn't be good enough to guarantee ignition without a puddle of fuel (do not want to experience a runaway) so now it fires at 0.4s π gfycat.com/fortunatecelebratedcoqui
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Post by wannabebuilderuk on Dec 5, 2021 16:46:59 GMT -5
Got myself a little 3" rotary table so the first thing I did was mill the bypass channel in my oil pump plate as it saves having to connect the inlet and bypass ports via tubing or back to tank. gfycat.com/brownreasonableadamsstaghornedbeetleTook me a while to position the place so it didn't go too close to any edges but once I had it I then did two 1.5mm deep passes for a 5mm by 3mm channel. did the connecting "straight" section by turning both wheels at similar rates as it was at a diagonal to the mill table x/y axis. Now I just need to plug the bypass port since it is no longer needed. Have also ordered my fuel system hydraulic fittings after much thinking so should have them soon. Ben
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