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Post by racket on Feb 2, 2015 18:56:32 GMT -5
Nice :-)
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Post by pitciblackscotland on Feb 2, 2015 23:25:41 GMT -5
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Post by Johansson on Feb 3, 2015 0:04:52 GMT -5
Thanks! I´ve seen RC Dons printer project, after reading about it I wanted to win one even more. Cheers! /Anders
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Post by Johansson on Feb 4, 2015 13:24:09 GMT -5
Speed Weekend is getting closer and closer, only three weeks left until we need to have everything loaded on the trailer! Last night I fitted the front fairing "headlight" screen that Ella and I made last week, it looks a bit better than just a hole in where the crow nest of cables are. After that I improved the riding comfort by a couple of thousand percents, my bony arse needs a bit more cushioning than a sheet of aluminum can provide... I used a self adhering seat foam that road racing bikes use to have, it sticks very good to the aluminum and is quite comfortable despite being quite thin. Time to figure out why the scuba compressor has lost its pressure, I disassembled all three compressor stages, cleaned the valves up and found a missing gasket in the high pressure stage when I compared it to the blueprints. I have found a new gasket that might fit so next time I have some spare time I will fit it and see if I get better pressure out of the compressor. Cheers! /Anders
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Post by pitciblackscotland on Feb 4, 2015 17:37:46 GMT -5
Hi Anders, Yes that might be the reason why it's tacking so long to fill your scuba tank. I also found out on my compressor that all the pipe fittings have to be air tight.
Cheers, Mark.
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Post by Johansson on Feb 5, 2015 2:19:30 GMT -5
I really hope so, if everything else fails I can borrow a scuba compressor from a friend but I´d rather use my own.
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Post by Johansson on Feb 9, 2015 0:09:18 GMT -5
After spending several hours on the scuba compressor fault finding I finally manage to find the reason for the sudden loss of pressure, it was a leaking spring loaded valve in the filter housing! Since this particular filter housing is quite old and a bit unsafe compared to newer ones (they have been reported to break and blow up according to comments on diving forums) I decided to remove it and run without a filter, I will never use these air bottles for breathing purposes so it doesen´t matter if a bit of oil/moisture gets into them. With that headache out of the way I fitted the second Gopro camera to the rear fairing pointing backwards, I printed a rivet mount on the 3D printer a while ago for this particular reason. Unless I manage to kick it away while mounting the bike it will stay in place. Finally I solved a problem that have bothered me for a while, namely how to fit the towing line to the bike. With all the fairings on the bike there is no useful attachment in line with the wheels, so how will I get the darn bike back to the pits after the race? I solved it by cutting a length of CrMo tubing that slides down the hole in the steering head, then I can fit the towing line to it above the wind screen. I use hose clamps instead of welded washers so I can adjust it depending on the height of the towing vehicle. Cheers! /Anders
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Post by pitciblackscotland on Feb 9, 2015 14:41:00 GMT -5
Hi Anders, That was a easy fix for the compressor :-)))
Cheers, Mark.
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Post by Johansson on Feb 12, 2015 17:31:10 GMT -5
I wish it was that easy Mark, the next test produced only 120bar and a closer inspection showed that the high pressure piston is worn out. Damn! Lucky for me I have lots of good friends who will help a guy in dire need, Rickard told me to come over and fill the tanks on his diving compressor so now I have two 15 liter tanks filled to 230bar, plenty of air for several starts! He will also fill a large Argon bottle I have before the race so there won´t be a lack of starting air for sure. When I got back home I made a pair of stainless end caps for the foot pegs, I also wrapped the pegs with rubber tape to get some extra grip for the boots. After that I cleaned up the bike, tested the ignition and oil system and charged the battery for the upcoming start. I ran the oil system at full pressure with the drain plug removed to see if there was any oil leaking past the shaft seals but not a single drop came out so I am very pleased. During the first couple of bench tests of the engine it must have leaked a pint of oil for every test run... Not much at all left to do now before the race, an intake shield that keeps ice thrown from the front wheel from entering the engine, some stickers and other minor stuff to do. The weather looks pretty promising right now with sub zero degrees every night at the race track for the next two weeks, this will hopefully be a very fun race weekend! Cheers! /Anders Tjo!
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Post by pitciblackscotland on Feb 12, 2015 18:10:01 GMT -5
I wish it was that easy Mark, the next test produced only 120bar and a closer inspection showed that the high pressure piston is worn out. Damn! Lucky for me I have lots of good friends who will help a guy in dire need, Rickard told me to come over and fill the tanks on his diving compressor so now I have two 15 liter tanks filled to 230bar, plenty of air for several starts! He will also fill a large Argon bottle I have before the race so there won´t be a lack of starting air for sure. When I got back home I made a pair of stainless end caps for the foot pegs, I also wrapped the pegs with rubber tape to get some extra grip for the boots. After that I cleaned up the bike, tested the ignition and oil system and charged the battery for the upcoming start. I ran the oil system at full pressure with the drain plug removed to see if there was any oil leaking past the shaft seals but not a single drop came out so I am very pleased. During the first couple of bench tests of the engine it must have leaked a pint of oil for every test run... Not much at all left to do now before the race, an intake shield that keeps ice thrown from the front wheel from entering the engine, some stickers and other minor stuff to do. The weather looks pretty promising right now with sub zero degrees every night at the race track for the next two weeks, this will hopefully be a very fun race weekend! Cheers! /Anders Tjo! Hi Anders, Bugger Do you know what make and specs of the compressor you have Bloody hell that's a nice compressor Rickard got there Good luck luck with the bike on race weekend Cheers, Mark.
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Post by smithy1 on Feb 12, 2015 19:56:49 GMT -5
Hi Anders,
Well done with getting the machine race ready....be sure to take plenty of photos and video for the rest of us to see. And....good luck..!
Cheers, Smithy.
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Post by Johansson on Feb 15, 2015 11:51:43 GMT -5
Thanks Smithy! I just did the final test before the race, everything went well except for a blown oil pump fuse during the first startup. I am glad that I have the Hobbs switch since it shut the fuel pump down immediately. Not a drop of oil came out when I opened the engine drain plug, I will investigate where the smoke comes from later. Happy happy!
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Deleted
Joined: January 1970
Posts: 0
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Post by Deleted on Feb 15, 2015 13:16:04 GMT -5
looking good, hope all goes well and you get some good runs in. See your back brake works about as well as mine did when you wind the power on :-) the wheel soon spins up
Good Luck :-)
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Post by racket on Feb 15, 2015 15:27:22 GMT -5
Hi Anders
I see the cold weather is still with you , all looking good for some runs :-)
Heh heh , yep , that stall torque gives the brakes a workout
Cheers John
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Post by Johansson on Feb 15, 2015 17:13:06 GMT -5
looking good, hope all goes well and you get some good runs in. See your back brake works about as well as mine did when you wind the power on :-) the wheel soon spins up Good Luck :-) Thanks! I didn´t get much past 1 bar P2 before the brake started to slip so I am very excited about running the bike flat out at 2.4-2.5bar. Hi Anders I see the cold weather is still with you , all looking good for some runs :-) Heh heh , yep , that stall torque gives the brakes a workout Cheers John Yup, the weather is looking very promising for the race. As I might have mentioned I use two ITT probes now and as you can see they show completely different temps, the old one (the left one on the dashboard) is very jumpy and around 100°C lower than the new Fluke probe (right one) which is more consistent and smooth. I am very tired of this temp reading problem since I haven´t got a clue whether I am about to melt the engine or not. With ITT temps closing in on 800°C with the freepower stalled and not a single sign of heat on the freepower housing I don´t know what to think... Cheers! /Anders
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