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Post by captain chaos on Jan 7, 2014 12:45:59 GMT
Thanks.
Actually my mate does most of the work, I help him a lot and do most of the research.
The 40's are at least 20 years old, good low mileage 36mm Bandit carbs can still be found (sold an as new set only a few months ago).
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Post by captain chaos on Jan 11, 2014 18:32:17 GMT
Saulius was ill all week so we didn't do anything. But today he called me and asked me to join again. So we had lunch and proceded to mount the footrests, sprocket cover, and oil cooler. Tomorrow probably we will fire up the bike, to see if everything is fine, and then wire in the Koso speedo he bought, and the fuel pump.
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Post by captain chaos on Jan 13, 2014 18:34:35 GMT
the time has come to connect all kinds of boost related things. We have a pitot tube on the pipe between compressor and plenum, for the float bowl pressurising. We also have a pipe on top of the plenum, same diameter as the pitot tube, is it ok to connect the FPR on that pipe? Or is it better to connect it to the pitot tube?
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Post by CHR15 on Jan 13, 2014 20:28:22 GMT
connect the fpr to the plenum, not the pitot tube.
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Post by busaash on Jan 13, 2014 22:52:17 GMT
Looking good cc
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Post by captain chaos on Jan 14, 2014 8:08:42 GMT
connect the fpr to the plenum, not the pitot tube. Cool, thanks.
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Post by nitro on Jan 14, 2014 12:53:22 GMT
Had my FPR a few years ago on the pitot, too. worked without problems.
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Post by captain chaos on Jan 21, 2014 20:42:34 GMT
bit of an update.
The last few weeks were a bit hectic for personal reasons, but we have been working a bit on the wiring. Now the Koso clocks, fuel pressure gauge, air/fuel gauge, boost gauge, fuel pump and O2 sensor have been connected, and just for good measure we also did the charging system mod as described in the info section on here. Also newer (Mk2 B12) switchgear has been installed.
No pics because wiring up a bike doesn't look exciting. But soon will be fire-up time and of course that will be filmed, and depending on the result it might even be posted here.
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Post by captain chaos on Jan 26, 2014 18:07:19 GMT
Started the bike today. First try some fuel was pissing out of the carbs, so i lowered the fuel level, from 12,5mm to 17mm, and it didn't leak anymore. Bike starts fine, idles ok, runs a little bit lean on idle, with some throttle action it's good. Boost gauge is very sensitive, even with a restrictor in the line it shakes quite a lot. But it shows more or less correctly. Fuel pressure gauge reacts slowly but is also accurate (we tested it). Malpassi also works correctly. Now we have to wait for some nicer weather so we can try and adjust a bit, and then get it on a dyno. A few questions: - how much should the fuel level be? Original is 14,5mm, now it's 17, is that ok? - is there anything we can adjust in the garage with no load, or do we need to ride the bike to do anything? *edit* no movie of start up because i forgot my camera
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Post by greasemonkey on Jan 26, 2014 18:18:06 GMT
Wiring: the exciting part of building a bike. looking good!
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Post by captain chaos on Jan 27, 2014 19:29:55 GMT
yesterday we used a small plastic bottle hanging above the bike as a fuel tank, with the return line in the top. It ran fine. Today Saulius called me and said that we left it yesterday with around 100ml of fuel in the bottle, when he came today it was empty. So the fuel is leaking somewhere. No leaks visible from the outside so probably going past the float needles into the engine. Of course we inspected the float needles earlier and they were not leaking, but if in doubt we will replace them.
Now we need some kind of fuel tap, a vacuum operated one is not working for the obvious reason, what would be the recommended tap to use? We need an inline one since the original tap on the tank has been modified to take the return line.
Or maybe we need some kind of valve/solenoid that releases the fuel pressure from the system when ignition is turned off.
Advise please?
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Post by captain chaos on Jan 29, 2014 19:35:31 GMT
The bike is more or less finished. Which sucks, because i enjoyed the evenings in the shed building bikes and drinking beer. A few small things to do still, like making a crankcase breather, a fuel warning light, and installing some good brake and clutch MCs. And then wait for some good weather so we can try the thing. Some local journalists have already showed interest in writing a story about the build.
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Post by captain chaos on Jan 29, 2014 19:36:27 GMT
Oh yes and of course an air filter and exhaust can.
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Post by greasemonkey on Jan 29, 2014 22:53:17 GMT
Looks great mate ! ETA on skids?
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Post by captain chaos on Jan 30, 2014 7:43:31 GMT
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