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Post by Johansson on Aug 28, 2013 15:32:32 GMT -5
While Agnes took her lunch nap I decided to get the front sprocket aligned and locked in place, first I made a 7mm spacer ring that fits on the shaft inside the woodruff key. With the sprockets aligned I started making a "cup" to fit over the drive shaft end and lock the front sprocket in place, it is a bit bulky but the alternative would be to modify the shaft and I´ve decided to keep as much as possible of the gearbox unmodified. After some work in the lathe this piece fell out, what I haven´t done yet is to drill the edge and the bolt head for lock wire so the bolt can never come lose. Thanks again for the reminder Ian and John, I made two steel spacers and welded them in place to keep the gearbox from moving backwards. Tonight I dressed the freepower housing and the battery in heat blankets to keep the heat from both my feet and the battery. Before I called it a night I finished fitting the brake lines and the brake fluid containers, next up is to fill the system. Cheers! /Anders
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gidge348
Senior Member
Joined: September 2010
Posts: 426
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Post by gidge348 on Aug 28, 2013 20:06:01 GMT -5
Hi Anders, those spacers look like they should work fine.
I can't believe how quickly you get things done while balancing your job and a young family as well as the bike. I am retired and my days are my own but work on my projects is nothing like the speed of yours.
Great work
Ian...
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Post by Johansson on Aug 28, 2013 23:07:09 GMT -5
Hi Ian,
An officer during my military service days told us that the less time you have at your hands the more you get done, I have come to believe that it is very true.
If I had all day long to spend as I wanted to I would probably find 100 other things that needed attention and probably waste half the day on the sofa with the laptop on my stomach. With small kids and a house to take care of I have to dig into my sleeping hours to get anything done on the bike and that makes me use the few hours available very effectively.
Thanks! /Anders
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Post by Johansson on Aug 31, 2013 16:49:06 GMT -5
Tonight I finished the temporary wiring for the upcoming tests, I´ve been tinkering with it a few hours last week but didn´t have much to show until now. Main power switch, oil pump switch, scavenge pump switch, spring loaded spark ignition button and a relay controlled switch for the fuel pump coupled so that the pump only gets power if a pressure switch fitted to the oil filter housing feels that there is oil pressure in the system. As an added safety I have put an extra fuel pump switch where it can be easily reached if something happens during the test run. All that is left to do now before the test run is to fill the fuel and oil tanks, test the pumps and look for leaks. After that I will do a couple of test starts to see if the exhaust temp is ok, if the power turbine NGV is too restrictive I will get high temps and need to open up the NGV area some to get the temps down to reasonable levels. Cheers! /Anders
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Deleted
Joined: January 1970
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Post by Deleted on Aug 31, 2013 17:00:27 GMT -5
Looking good, wish my was moving on, but not got much done, waiting for shaft to be done before we can start on frame.... have you come across these, www.sparkfun.com/products/11218 I know Richard has mention them in one of his posts, thought i posted about them after one of members on diy group mentioned them.... small and pack a 12 kva punch, just what you need to lie gas with a 12 volt suply
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Post by racket on Aug 31, 2013 17:21:06 GMT -5
Hi Andy
I purchased a couple of those a month or so back and sent one down to Andrew to play with , he said they throw a decent spark :-)
Cheers John
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Deleted
Joined: January 1970
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Post by Deleted on Aug 31, 2013 17:27:21 GMT -5
Hi John...... Should be some thing getting to your door soon with a good spark
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Post by racket on Aug 31, 2013 23:31:42 GMT -5
Thanks Andy :-)
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Post by Johansson on Sept 1, 2013 3:05:38 GMT -5
Thanks for the info Andy, is it easy to convert one for 12V?
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Deleted
Joined: January 1970
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Post by Deleted on Sept 1, 2013 7:27:37 GMT -5
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Post by turbochris on Sept 1, 2013 7:50:03 GMT -5
that little sparkfun coil, i tested one the other night. At 5 v it pulls right around 3 amps and puts out a nice hot spark, i tried up to a 1/2 inch gap no problem. Here's the thing, it will put out a nice spark running off a flashlight battery. Just 1.5 volts. a battery holder and a battery w a button will last forever if used intermittently. I wouldn't try one on 12 volts unless I had a spare!
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Deleted
Joined: January 1970
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Post by Deleted on Sept 1, 2013 9:24:53 GMT -5
that little sparkfun coil, i tested one the other night. At 5 v it pulls right around 3 amps and puts out a nice hot spark, i tried up to a 1/2 inch gap no problem. Here's the thing, it will put out a nice spark running off a flashlight battery. Just 1.5 volts. a battery holder and a battery w a button will last forever if used intermittently. I wouldn't try one on 12 volts unless I had a spare! They dont last long at 12 volt, but they do work
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Post by Johansson on Sept 1, 2013 10:04:15 GMT -5
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Deleted
Joined: January 1970
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Post by Deleted on Sept 1, 2013 13:12:11 GMT -5
Hi
Yes they do..... :-)
infact they look better for fixing in a box etc
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Post by Johansson on Sept 1, 2013 16:10:14 GMT -5
Can´t wait until I get to throw some sparks with them! Today I finished off the last stuff I had to do before I could test the system, first I made a fuel tank breather... ...and after that I made a fake injector with a 1mm hole to simulate fuel flow for the fuel pressure test. An oil hose was routed from the oil filter output back to the tank so I didn´t have to run the oil through the engine to get a pressure reading. The bike was filled with some Jet-A1... ...and some oil. The test showed that the throttle regulator was too restrictive so I couldn´t get the idle fuel pressure low enough, I disconnected it and used a 30A PWM controller to run the pump instead. I got a perfect throttle response from 0 to 7 bar fuel pressure so I will use a PWM from now on. I shot some video footage when I tested the pumps and stuff, sorry for not speaking english but I promise to take some time to make a complete presentation of the bike in english later when it is finished. Cheers! /Anders
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