keithbob

Nice look, George! It'll help loads on the dyno. :goofy: Seriously, that's gonna look great. Post another photo when it's asembled again. When is the dyno day happening? Can others of us tag along? Like David, I'd be interested in seeing if my PC map is close or needs more work. If he's not a DynoJet center, the place my brother works at up in Seattle is. Keith

I was admiring Tim's photo and realized, "Hey, that's me!" I still can't tell you guys enough how much fun it was having you all out here to the Oregon coast. Thanks, Tim- Keith

Glad to hear you missed it, and you were OK! About 15 years ago, I was taking a favorite uphill cloverleaf 270 between freeways near Seattle. About halfway through, while in a nice, steady-state hard right, I spotted something white right on my line ahead. I let the front end ease out, lifted the bike a little, and as it passed below, I saw a partly open disposable diaper fully loaded with greasy baby-poop. If my front end had hit that I'd have been down faster than sh*t. Slipperier than deer-guts on a doorknob. Looked a lot like a big, stinky flower laying there. :( keith

Enzed is right - I don't know if lifting the tank after opening up the airbox is actually better on the dyno. I do know that after installing the PCII and O2 elim. and getting a good map in it, I still had a very moderate flat spot around 4500-5500. Opening up the airbox has eliminated it, and the tank-lift was done at the same time. I don't know if there is more top-end power, but the mid-range is much improved. I looked at where the air has to pass through to get to the airbox openings, and it's a lot of small spaces. Collectively, they all add up, but turbulence and drag is (generally) higher for multiple openings than for a single one of the same area. Lifting the tank just a quarter inch actually makes a pretty big difference in the area exposed along the lower front edge through which air can flow. The real question is, is this change actually helping air to flow to the airbox, and, more importantly, is there a favorable change in airflow through the intake system and its resonant characteristics that results in more usable power and better throttle response? Throttle response is indeed improved. Power? Only the dyno will answer that question. I've read that it takes about a 10% change in power before the average street rider really notices it, and can easily believe it. I will be having the bike dynoed and the PCII map adjusted next time I'm up in Seattle - I'll report what I find. Keith

Congrats on lockin' her in! Good job on the airbox, too. I think I'll do the screen idea. I opened mine up in a similar way last year, and now find all sorts of odd bugs and stuff on the filter. Remember, bug-infested air has to get to that big new opening now, and that's not easy the way the VFR is designed. I put some 1/4" spacers under the front mounting tabs, and found some longer stainless bolts at the marine supply store here. I just used a couple of 6mm (I think) nuts slipped over the bolts. The tank is still firmly held in place, and I often use a large tank-bag loaded with all my stuff. The result is more air coming in under the front of the tank. I haven't had it dynoed yet, but the tank lift seems to help in the midrange, which is where we need it. Sounds great, too. Keith