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Post by Johansson on Jan 28, 2017 17:27:21 GMT -5
Hi Anders Nice welding job , if I could handle a TIG as well as you, I'd also be welding the evaps instead of silver soldering them . Heh heh , I notice you have your D'ing on the inner and outer side of the evap , I have mine on the sides ............I'd guess it doesn't make any difference , the D'ing is the important thing to get some turbulence happening . The engine is starting to look rather "finished" ............love the stainless work :-) All the best with the testing tomorrow, I hope you guys get to do a flawless run, its long overdue ..............video please . Cheers John Hi John, Thanks, I am starting to get the hang of the TIG welding. Especially with my new Migatronic 200A welder, it runs like a dream! Perhaps the best way would be to spread the D-ing out 90° apart all around the tube, but I think this will do. I am slowly but surely working my way down the list, but some of the heavier jobs are left to do like making an integrated bellmouth/starter mount so I consider myself far from finished yet. Thanks, video will be posted tomorrow night or at least in the beginning of the week. Cheers! /Anders
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Post by pitciblackscotland on Jan 28, 2017 18:26:39 GMT -5
Hi Anders Nice welding job , if I could handle a TIG as well as you, I'd also be welding the evaps instead of silver soldering them . Heh heh , I notice you have your D'ing on the inner and outer side of the evap , I have mine on the sides ............I'd guess it doesn't make any difference , the D'ing is the important thing to get some turbulence happening . The engine is starting to look rather "finished" ............love the stainless work :-) I like your lube line clearance solution , I tried just heating the end wall and beating a recess , but it didn't work , the 2mm thick stainless rollover at the corner was too strong, I think its the JFS turbine starter that has a large "recess" in its FT for clearance and still works OK . All the best with the testing tomorrow, I hope you guys get to do a flawless run, its long overdue ..............video please . Cheers John Hi John, Yes the JFS has a recess in the flame tube see these pics from my manual i have. Cheers, Mark.
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Post by Johansson on Jan 31, 2017 16:30:32 GMT -5
It would probably be wisest to wait with the JU-02 injectors until I have test started the bike and confirmed that the injector design actually works, but since I have nothing better to do I´ll take my chances. I had to think a bit outside the box to drill the 0.8mm holes in the brass nozzles where the syringe needles will be fitted. With that done I cut and deburred 18 syringe needles to the correct length and set everything up for silver soldering. The injectors are soldered and the syringe tips are bent, now I just need to make a test rig so I can check that all of the injectors flow the same and have a fine spray pattern. Cheers! /Anders
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Post by racket on Jan 31, 2017 16:58:39 GMT -5
Hi Anders
A nice collection of bits :-)
When I think back to how "easy" it was to simply instal a single spray nozzle into a "sore thumb" combustor , these annular combustors are "complicated" and time consuming .
Cheers John
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Post by Johansson on Jan 31, 2017 17:04:34 GMT -5
Hi Anders A nice collection of bits :-) When I think back to how "easy" it was to simply instal a single spray nozzle into a "sore thumb" combustor , these annular combustors are "complicated" and time consuming . Cheers John Hi John, They are indeed, but if this type of fuel manifold works it will be much easier to work with since I can remove the banjo bolt injectors and clean the manifold in case I get dirt in there. I can also fit a spare injector in a minute instead of having to desolder the clogged one and fit a new one directly to the manifold. Cheers! /Anders
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Post by racket on Jan 31, 2017 17:51:57 GMT -5
Hi Anders Theres also a good chance you'll be able to "backflush/blow out" a single injector thats blocked knowing that the rubbish hasn't just gone back into the manifold as can happen with our conventional ones, I'm looking forward to seeing how things workout :-)
Cheers John
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Post by Johansson on Feb 1, 2017 0:15:15 GMT -5
Hi Anders Theres also a good chance you'll be able to "backflush/blow out" a single injector thats blocked knowing that the rubbish hasn't just gone back into the manifold as can happen with our conventional ones, I'm looking forward to seeing how things workout :-) Cheers John Since the syringes are straight I won´t even have to flush them out, I can simply use a length of piano wire and push the dirt out of them.
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Post by madpatty on Feb 1, 2017 0:40:27 GMT -5
Hi Anders A nice collection of bits :-) When I think back to how "easy" it was to simply instal a single spray nozzle into a "sore thumb" combustor , these annular combustors are "complicated" and time consuming . Cheers John Hi John, They are indeed, but if this type of fuel manifold works it will be much easier to work with since I can remove the banjo bolt injectors and clean the manifold in case I get dirt in there. I can also fit a spare injector in a minute instead of having to desolder the clogged one and fit a new one directly to the manifold. Cheers! /Anders Hi Johansson and Racket, There is a very good chance this external fuel manifold will work. I have some experience of working with it and it surely did work perfect. postimg.org/image/jdis2i10h/Cheers.
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Chuks
Senior Member
Joined: August 2015
Posts: 498
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Post by Chuks on Feb 2, 2017 1:29:49 GMT -5
Nice work sir, Is there such thing like 0.8 drill bit? I have only seen and used 2mm drill bits.
Hopefully the external injectors will work perfectly with the RACKETJECTORS..... keep going sir.
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Post by Johansson on Feb 2, 2017 2:02:30 GMT -5
Nice work sir, Is there such thing like 0.8 drill bit? I have only seen and used 2mm drill bits. Hopefully the external injectors will work perfectly with the RACKETJECTORS..... keep going sir. I found an old set of small Dremel inch drills on a shelf in the workshop, a lucky find. :-)
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Post by Johansson on Feb 2, 2017 16:06:20 GMT -5
I made a quick test rig to check that the 18 syringe injectors would produce a similar spray pattern. I couldn´t see any noticable difference between the injectors, so they´ll do. I cleaned the fuel manifold out with compressed air and fitted it to the engine just to see if the injectors would fit without any problem, they slid right in so I consider the fuel system finished. Cheers! /Anders
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Post by stoffe64 on Feb 2, 2017 16:37:00 GMT -5
Very Nice work as always!
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Post by Johansson on Feb 2, 2017 16:50:58 GMT -5
Very Nice work as always! Thanks Stoffe! I dressed the old girl up as well to see how the fairings could be improved before the next race. I will try to extend the fairings down to the kerosene tank to lower the drag around the lower parts of the bike. Cheers! /Anders
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Post by jetjeff on Feb 3, 2017 4:01:08 GMT -5
Hi Anders,
Great work as always. Do any of your bikes have an onboard fire suppression system? Could be something as simple as a CO2 fire extinguisher or as elaborate as a Halon system.
Regards
Jeff
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Post by Johansson on Feb 3, 2017 14:20:55 GMT -5
Hi Anders, Great work as always. Do any of your bikes have an onboard fire suppression system? Could be something as simple as a CO2 fire extinguisher or as elaborate as a Halon system. Regards Jeff Thanks Jeff! Nope, the first year I had strapped a small spray can extinguisher to the bike but nowadays the whole length of the race track is covered with fire fighters and extinguishers so there is no need. I placed the oil and fuel tanks below the engine just so that sudden leaks won´t end up on the hot engine and catch fire, so I consider the bike relatively safe after all. Cheers! /Anders
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