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I rebuilt the fuel tap again and cannot get it to hold a vacuum, so it has to go. I bought a Pingel dual outlet fuel tap a few years ago and now seems like a good time to press it into service. I'll order a 44mm adapter plate and that should fix the fuel problem.
Joe, here's a partial side shot before the side covers were finished. Lots of details work to finish off yet. Points cover needs to be made, brackets for the side covers designed and fabricated and then I have to get it jetted to work with three sets of exhausts. I have a box of jets and a spare set of carbs, so I hope that makes it a little easier/quicker.
I just hate gas spilling all over a hot exhaust as the bikes sits on the dyno with the clock ticking... It's jetted slightly rich at the moment, just to be safe. We'll see what the EGT and gas analysis tell us.
Louie, that's why I called it the Phat Trakka, because it so wide it's ridiculous. It would have been fairly easy for Suzuki to have made it 4-6 inches less wide and 100 pounds less heavy. They are ridiculous in many ways, but it's hard to hate a 2 stroke 750cc triple and fat girls have more to love - right?
Louie,
No. This is an original Strader which came with 3 headers and a one piece collector/expansion chamber/tailpipe with an interesting absorbtion AND interference baffle - like a short version of an OEM baffle.
Supposedly they made 5hp more than stock, but how they did that is a mystery. The dimensions are all wrong according to the software I use for such things. We'll know when I finally wrestle it onto a dyno.
Joe,
Thanks. Glad you like it. If you are familiar with a GT750, you will have noticed that the barrels are a little different. They have been lightened significantly around the lower part of the transfer passages.
Supposedly they made 5hp more than stock, but how they did that is a mystery. The dimensions are all wrong according to the software I use for such things. We'll know when I finally wrestle it onto a dyno.
It is amazing how some things work compared to how we think they should...we used to run fuel with dye in it and when we disassembled the engine after a race you could see where and how the air flowed from the dye staining the aluminum in the ports and on the cylinder head, the first time I saw it I could not believe how the air was flowing.
Thanks again guys. My bikes are functional rather than pretty as a rule.
Joey, last year I was given some Kawasaki H2 Denco dimensions and ran them through the latest and greatest software and Dennis Dean basically hit all the marks. There is still more to come with modern technology, but some of those try and see guys did one heck of a job and some of them did get it right.
As for gas flow, it doesn't do what people think it will do. You should see a flow bench with smoke probe and see where some of the smoke goes - not where you expect. And that's with a static state and not pulsing like a real motor.
I use MOTA quite a lot as a development tool and it shows wave patterns at certain RPMS that would amaze you to see all the pulsing going on during a single cycle. We think about flow as if it were a constant or as if there was one simple pulse traveling in each direction. In the real world there are many pulses going back and forth up and down an intake or an exhaust pipe. All we try to do is to modify the timing and the amplitude of the waves and even that doesn't always give us the results we expected.
Jimmer, I had it left over from a prior build and It's exactly what I'm looking for on this build. I also worked up some different port timings to exaggerate that midrange stump pulling - at least that's the plan.
Video isn't turning out so good, but I'm sure I can fix that. For now here's a picture to keep you going. I have to do some fine tuning and give it a good clean and then get some decent pictures.
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