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Post by racket on Feb 5, 2011 18:13:04 GMT -5
Hi Anders How long 'till Speed Week Cheers John
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Post by Johansson on Feb 6, 2011 1:47:11 GMT -5
Four weeeks give or take a day or two.
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Post by Johansson on Feb 18, 2011 1:41:45 GMT -5
Update on the jetkick, the runners are in place and the engine is assembled (earlier pics had a mockup with a broken turbo) so now it isn´t much left to do before she is ready. Tomorrow and on sunday we will focus on getting everything finished, brakes will be built among other things.
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Post by racket on Feb 18, 2011 3:34:58 GMT -5
Hi Anders
Neat and tidy, nice ...................nearly time to "kick the tires and light the fires " ....................heh heh, be careful kicking its "tyres " though ;-)
Cheers John
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Post by Johansson on Feb 20, 2011 16:04:30 GMT -5
We´ve been working on the kick most of the weekend and got sooo close to a test run, when we started the 4-stroke oil pump engine the spark plug interfered with the Arduino ECU and made the LCD display go bananas. No big deal, Olov will add a series of diodes and other gadgets to the electronic system to get around this problem. We hope that we can start the engine next weekend instead. The compressor wheel looks a bit dull, but it is as good as new under the oxide.
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Post by racket on Feb 20, 2011 18:52:38 GMT -5
Hi Anders
Getting close when you start filling her up with oil :-)
Can't wait to see her fired up again .
Cheers John
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Post by Johansson on Feb 23, 2011 1:16:33 GMT -5
We got more work done on the kick last night. A connecting rod between the runners was built so the runners stay parallel all the time, a heat shield for the afterburner was built and a crude flameholder was fitted inside the AB 15cm downstream the stepup flange. Another benefit with the flameholder is that it will act as an oversized glowplug preventing AB flameout like the one we experienced last year, it should also make ignition easier since it forces the fuel vapour up against the spark plug. We´ll see how it works this weekend, the electronic interference was solved with a new resistor spark plug for the oil pump motor so we are more or less ready to fire her up now!
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Post by racket on Feb 25, 2011 1:52:56 GMT -5
Hi Anders
All the best with the test ......................LOL, check for rags first ;-)
Cheers John
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Post by Johansson on Feb 25, 2011 4:00:47 GMT -5
Ha ha, the engine is 100% rag free now... ;D
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Post by Johansson on Feb 25, 2011 15:41:07 GMT -5
Almost ready for Speed Weekend on Ice 2011!
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fricke
New Member
Jack of many trades....
Joined: August 2010
Posts: 6
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Post by fricke on Feb 25, 2011 17:22:50 GMT -5
Nice work! Best of luck at the race!
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Post by racket on Feb 25, 2011 19:40:48 GMT -5
Hi Anders
Heh heh , thats nice to know ;-)
Man , that A/B is a "pretty" colour , it'll keep you warm out there on the ice , burning right from the injectors , plenty of radiant heat ,what sort of heat shielding will you have to protect the rest of the engine bits , LOL...... that "hose" running underneath looks a bit vulnerable .
Excellent job :-)
Cheers John
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Post by Johansson on Feb 26, 2011 0:57:38 GMT -5
Nice work! Best of luck at the race! Thanks Fredrik! Hi Anders Heh heh , thats nice to know ;-) Man , that A/B is a "pretty" colour , it'll keep you warm out there on the ice , burning right from the injectors , plenty of radiant heat ,what sort of heat shielding will you have to protect the rest of the engine bits , LOL...... that "hose" running underneath looks a bit vulnerable . Excellent job :-) Cheers John We will use a stainless heat shield around the AB with several layers of fire blanket on the outside, there will be a 5cm air gap between the AB and shield so at speed there should be plenty of cooling air going through there. Fortunately all "hoses" on the kick are steel hydraulic tubing so if they start melting we have more than one problem... ;D
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Post by racket on Feb 26, 2011 17:25:31 GMT -5
Hi Anders
Yeh , that should stop your legs from getting too hot , better than cardboard up the trouser leg ;-)
Heavy duty hydraulic bits should cope nicely................ plenty more test runs to find any last minute problems and to get really familiar with the controls before loading her up and heading for the track ................you must be getting excited at the prospect :-)
Cheers John
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Post by Johansson on Feb 27, 2011 1:34:08 GMT -5
Very excited, yes. We have tough competition this year, last years "winners" in the unofficial jet kick competition have bought a larger engine this time and has measured close to 150kg of thrust in a wooden kick chassis. They tested it yesterday and clocked in at 148km/h while drifting from side to side on the track due to the very weak frame and stiff welded runners, they have more to give but I am seriously concerned for their safety since I get the feeling that they dont really know what they are doing. The fuel regulator have been modified and they have no idea what revs or temps they should be running... Here is an older video of the same kick, no brakes at all and the runners welded directly to the engine mounts... Oh well, we´ll make sure to give them a run for their money.
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