metiz
Senior Member
Joined: April 2011
Posts: 297
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Post by metiz on Feb 11, 2013 13:14:51 GMT -5
editing a previous post wasn't such a great idea it seems  |
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Post by Johansson on Feb 11, 2013 17:25:39 GMT -5
It looks awesome!!!
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metiz
Senior Member
Joined: April 2011
Posts: 297
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Post by metiz on Feb 18, 2013 12:41:30 GMT -5
Some crude tailpipe reinforcements  Ejectors welded on. There will be clamps holding the exhausts of the ejectors  One more  |
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wolfdragon
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Joined: April 2011
Posts: 287
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Post by wolfdragon on Feb 20, 2013 13:50:01 GMT -5
where the hell are the mounting lugs?
also, will it fit on top of a small car?
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metiz
Senior Member
Joined: April 2011
Posts: 297
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Post by metiz on Feb 20, 2013 19:17:11 GMT -5
The augmenters are welded on the front, clamps will hold them on the back. Clamps aren't on there yet.
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Post by ernie wrenn on Feb 21, 2013 8:39:11 GMT -5
video is REQUIRED when you start trying to start that beast! Looks like a candidate for Burning Man next year..
ernie
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metiz
Senior Member
Joined: April 2011
Posts: 297
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Post by metiz on Feb 21, 2013 13:54:00 GMT -5
Not to worry, video documentation is comming
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metiz
Senior Member
Joined: April 2011
Posts: 297
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Post by metiz on Feb 23, 2013 10:29:46 GMT -5
I'm almost done with the main engine so now I need to concentrate on fueling. I've never fueled anything close to this big so I need some help. Can anyone give me some advice on pumps and injectors? The ballpark fuel consumption is about 10 litres per minute.
One more thing to take into account is that I can't manually start it, it needs to be done from a distance so not only do I need to control fuel flow remotely (not wirelessly) but also starting air. I got the suggestion to use a couple of old empty propane tanks as extra air tanks and some sort of quick release to quickly dump air into the intakes. This has a disadvantage, namely that I can try starting only a couple of times.
I'm up for any other suggestions. Anders, what kind of fan are you (or the other team) using with the Argus scale engine?
Maybe use explosions to kickstart the engine?
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Post by Johansson on Feb 23, 2013 10:55:09 GMT -5
They are using a large industrial centrifugal fan which they have built a speed controller for, it is powered by a 3-phase motor so it needs some juice to run.
A regular leaf blower should be up for the job I think, it should produce enough air flow even for an engine this size.
Perhaps you should try to start it with only one injector running so you won´t need to blow air through all three intakes at the same time? One injector flowing its full capacity might be a good idle system.
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metiz
Senior Member
Joined: April 2011
Posts: 297
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Post by metiz on Feb 23, 2013 13:24:11 GMT -5
So start on one injector and when the engine is running, open the other 2?
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Post by Johansson on Feb 23, 2013 14:40:17 GMT -5
It´s worth a try.
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wolfdragon
Senior Member
Joined: April 2011
Posts: 287
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Post by wolfdragon on Feb 24, 2013 11:44:17 GMT -5
You should be able to get compressed air at the welding supply where you get the high pressure large bottles from, granted you will probably get a few strange looks, but 250-300 cubic feet of air at 2000 or so PSI will go a long way...
But I would also try the leafblower in 1 first...
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Post by Johansson on Feb 24, 2013 17:44:11 GMT -5
One possible problem with my idea might be that the burning fuel can blow out through the other two intakes, but I guess there is only one way to find out.  |
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metiz
Senior Member
Joined: April 2011
Posts: 297
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Post by metiz on Jun 6, 2013 18:03:18 GMT -5
Bought 3 high capacity fuel nozzles a couple of days ago. They'll be here in under two weeks
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metiz
Senior Member
Joined: April 2011
Posts: 297
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Post by metiz on Jun 7, 2013 8:00:21 GMT -5
2 weeks, 2 days, tomáto tomato it seems  Can't believe they charged me 10 bucks just to ship these to me in an envelope. 3.9L/min @ 800kPa, ought to do the trick. Next up: a pump. Suggestions? *Edit* Anders, I remember you telling me about the pumps in that big valved engine that ran at speed-weekend, weren't those a bunch of smaller pumps? |
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