| Author |
Message |
    
Steveford
| | Posted on Friday, August 28, 2015 - 09:11 pm: | 
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I'm not quite sure what the question is anymore but I've found a stock S1 to be the most pleasant bike to ride but doesn't have a whole heck of a lot of top end rush, the S1W is pretty darned speedy, the S2 is a bit of a dog, the carb S3 takes a bit of time to wind up and get going but once it does it feels kind of unstoppable, the X1 will run away from all of them but the S1W will be right behind it.
Does this help any? |
Phelan
| | Posted on Friday, August 28, 2015 - 10:25 pm: |
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All I know is my Uly will outrun them all  . |
Truckedup
| | Posted on Saturday, August 29, 2015 - 07:08 am: |
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"Truckedop:
My 97S3T is set to 12 to 1 ...
Now tell me what the DYNO says you 650 TRIUMPH is ???"
The A/F probe interfered with exhaust flow on the 1-1/2 inch individual pipes.So that's one reason it was not used. The location of the probe affects the A/F measurement,move that probe to a different location and get a different reading. |
Lakes
| | Posted on Saturday, August 29, 2015 - 07:53 am: |
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Ross my friend has a Ully 2009
we raced at drag strip, my ol M2 smoked him quicker & faster trap speed cv44 carb n6 cams decked bottom of barrels to raise swish band to 40th different ignition & d&d pipe but stock motor just good tune |
Buellistic
| | Posted on Saturday, August 29, 2015 - 08:29 am: |
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Truckedup:
Then you use your spark plugs to tell what your jetting is ??? |
Phelan
| | Posted on Saturday, August 29, 2015 - 12:53 pm: |
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My Uly has 30 RWHP over stock (106 vs 76), while still utilizing the stock exhaust, muffler valve active. Ported heads with 1.900" intake and 1.615" exhaust valves, ported manifold, 1250 kit with 10* dome pistons, NRHS CAT3 cams, S&S lifters, chromoly pushrods, etc. Fuel injected, tuned by me. |
Truckedup
| | Posted on Saturday, August 29, 2015 - 03:14 pm: |
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"Truckedup:
Then you use your spark plugs to tell what your jetting is ???"
Not usually just for signs of detonation...Spark plug readings are good for generalizations, like way rich or way lean.The type of racing I do isn't long enough for the plugs to color.And additives in gas will affect plug color as will the type of ignition.
The plugs on my race bike are dull white on the porcelain...
The better plug info is the discoloration on the ground strap and the carbon deposits on the end of the threads. |
Lakes
| | Posted on Saturday, August 29, 2015 - 06:58 pm: |
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Hey Ross have you ever had it down quarter mile yet?
if so tell me trap speed @ 60ft times as dyno's tell me nothing. but just what i've learnt over the years, had one guy with a light weight EVO ridged that had a turbo & he owned a dyno, told me it had 150HP but my TC95 Smoked him with no where near 150HP. i told him i don't have shetland ponys. all full size as the torque tell's me. and i only count what comes to life in 3 seconds & use SAE |
Phelan
| | Posted on Saturday, August 29, 2015 - 09:12 pm: |
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I haven't yet; there aren't any close enough to go to on short notice. It would be silly to compare time slips at my elevation though, as I'm 5500 ft up and lose about 15% power compared to sea level. What is considerable though is the numbers I posted were from the same bike, same dyno, same conditions. It really is that much more powerful than before. |
Lakes
| | Posted on Sunday, August 30, 2015 - 02:53 am: |
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Sounds Good Ross!
only reason i don't worry much about dyne numbers, is i went from tuning for HP, to tuning for maximum HP & TQ that came in in 3 seconds with load. & it did not show as more horses. but at the track & every time i road the bike it felt very quick & showed same trap speed but quicker ET, the 60ft depended more on me. that was my dyna TC 95 carb with 51CV modified by my friend but used stock vacuum spring he just used some tuning tricks with butter fly that helped me run idle really lean but did not feel like it, the throttle felt fantastic, my friend who helped now owns the bike bought it from me.
it's a 95 with HD cast heads that looks stock n flys he also Has a Top Bike nitro harley as we loosely call them he set up the flywheel too spot welded the crank pin |
Phelan
| | Posted on Sunday, August 30, 2015 - 03:51 am: |
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The differences on time on a dyno have as much to do with which gear is ran as how much power it's making. if a bike is making more power but taking longer, that means it's geared taller, or say, ran in 5th gear vs 4th. We did both on my bike and the difference in reading was .5 HP, not significant. Zack's 1190RS took longer to top out on the dyno, but that's because it was running a lot higher speed, taller gearing (btw, 155 RWHP with stock headpipes, no mufflers, no tune). Also elevation and correction factor come into play as well. My bike actually makes about 90 RWHP at my elevation, but would make significantly more at sea level (according to the correction factor, which is pretty dang accurate, 20% more power). So my bike will look slower on the dyno here than a similar bike at sea level (because it is). |
Phelan
| | Posted on Sunday, August 30, 2015 - 03:56 am: |
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I should validate that; obviously torque dips and such will affect that, and sounds like what you're talking about is more about tuning out reversion (the cause of torque dips). One thing nice about the XB exhaust, is the dual length setup they use with an actuator valve to change between lengths at different loads and RPM, which all but eliminates reversion and creates a very flat torque curve. Mine put down 85 ft/lbs IIRC. |
Screamer
| | Posted on Sunday, August 30, 2015 - 11:05 am: |
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There is more than just reversion, that can cause a torque dip... |
Buellistic
| | Posted on Sunday, August 30, 2015 - 12:42 pm: |
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OLD SCHOOL: What are you tuning your exhaust system for TORQUE OR TOP END or the best of both worlds ??? |
Lakes
| | Posted on Wednesday, September 02, 2015 - 06:50 am: |
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Ross i always use 4th gear, i know about how using taller gears can fool some dynoes, but always use 4th, if i used 5th and got more , it would not fool the Black Dyno !! your trap speed will be same on the day no matter what gear you cross the line in. ET might vary not trap speed. |
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