sweatmachine
Adjunct
Reged: 08/21/06
Posts: 321
Loc: Austin, TX
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I call BS on some of those #s. How can a guy get almost 70hp with debaffled pipes and airbox elim alone?
Answer? He can't, the dyno is no bueno.
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There is no greater thrill than being shot at with no consequence. -Churchill
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ArsnlTim
Adjunct
Reged: 05/30/07
Posts: 730
Loc: New London, CT
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Quote:
I call BS on some of those #s. How can a guy get almost 70hp with debaffled pipes and airbox elim alone?
Answer? He can't, the dyno is no bueno.
Don't think you're the only one with this thought. I've gone over and over in my head weather or not it was an accurate pull but here's the facts.
1) Every other Dyno run makes perfect sense so why would the dyno be wrong for 1 run out of 8 especially since I was not the first pull and I wasn't the last. (I was second)
2) The guy who ran the Dyno, Roger, uses his Dyno all the time. He takes it to Rallys, meetings, runs it in front of his shop. It's big business to him so the chances of him letting it fall into disrepair, slim to none.
3) Dynoing is what Roger does, ask any one who was there, the guy was really smart. It didn't matter if you were riding a Harley, a Ducati, a Triumph, or a snowmobile, if he could hook it up to his dyno he could tell you exactly what to do to your bike to make it run better (except Martin, his bike was running like it had EFI already  )
So I'll go ahead and put this out, if anyone thinks my Dyno isn't correct send me one of those Dyno Jet coupons (I know someone somewhere has one that's collecting dust) and I'll be more than happy to go get my results confirmed but untill than we have to go by whats in writing because it's way more accurate than anyone's gut instinct, even my own and I ride the bike.
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Let my dying thought be that every mile was fun and let my tombstone read,"They never made one fast enough for me."
Edited by ArsnlTim (08/16/07 06:16 PM)
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RobBA05
Loquacious
Reged: 01/23/06
Posts: 3565
Loc: NH
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Yup I got to agree with you there Tim...I was there I saw it....it does baffle...but the guy read my set up to a tee just by running the machine...he knew the ins and outs...and he nailed it! Like Pat said that day...some times you just get a machine that everything on it is right...and trust me if Pat byes it too...I am DEFINATELY not gonna question it!
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THE VOICE OF REASON
per: Stewart
AF&AM/Shriner/Scoutmaster
130/45 TBS 2shim SS Uni 18/42
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sweatmachine
Adjunct
Reged: 08/21/06
Posts: 321
Loc: Austin, TX
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well, take it to another dyno and see what happens, my guess is 10 less hp at least.
not trying to talk trash, I'm just saying a "stock" bike isn't capable of those #s
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There is no greater thrill than being shot at with no consequence. -Churchill
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willyrover
Adjunct
Reged: 01/22/07
Posts: 160
Loc: West of Sydney Australia
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Who is doing the spreadsheet so I can send my numbers in on an 07 Speedmaster here in Syd Aus.
The more info the better.
Derek
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2008 Black Speedmaster
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ArsnlTim
Adjunct
Reged: 05/30/07
Posts: 730
Loc: New London, CT
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I said I'd have no problem with that, the problem I do have is paying for it. Not that $70-$100 is too rich for me it just that I've already paid once and while it seems high to me too, facts are facts and Dynos are designed to give accurate readings so I can think of a lot better places to stick that kind of money (like progressive fork springs) than to settle an argument. So if someone has a Dyno Jet coupon sitting around collecting dust, please send it to me so we can all see if it was acurate or not. Until someone is willing to send me one, I'm not trying to talk trash either, we'll have to go with the results from the very expensive, highly calibrated, seemingly accurate in every other instance machine that was run by a very skilled operator and not by one person who wasn't there saying it's imposible.
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Let my dying thought be that every mile was fun and let my tombstone read,"They never made one fast enough for me."
Edited by ArsnlTim (08/16/07 06:51 PM)
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Bucky
Loquacious
Reged: 05/21/06
Posts: 3971
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Quote:
not trying to talk trash, I'm just saying a "stock" bike isn't capable of those #s
There wasn't a stock bike in any of the above runs.
The 68 HP Speedmaster was running 160 mains. My bike was perhaps the closest to stock, and gave up nearly exactly what the factory specs for torque and HP
Our carbs are only capable of a finite amount of air via their naturally aspirated deign and the constant air induction volume of our non variable intake valves. Increasing HP is as easy as pouring the fuel to the coals. One can reach a maximum potential HP at an air to fuel ratio of 12.6:1 -- Not impossible or difficult to achieve. The only potential drawback is a loss of torque, and the fact that the HP gain is at the highest RPMs. Every fuel rich bike shown (except Pat's) is running 50 HP max until they get above 6000 RPMs.
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sweatmachine
Adjunct
Reged: 08/21/06
Posts: 321
Loc: Austin, TX
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by stock I mean internals
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There is no greater thrill than being shot at with no consequence. -Churchill
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ArsnlTim
Adjunct
Reged: 05/30/07
Posts: 730
Loc: New London, CT
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I just posted in the lounge looking for someone who has a dynojet coupon they don't plan on using that they wouldn't mind sending to me so we can check the results. If I do get one, my question is, after the dyno run, roger told me that I should go one size down on my main jets, put 2 shims on my needles, and go 1/4 to 1/2 turns leaner on my mixture screws. I've done all that. If I do manage to get my hands on a coupon would everyone like to see my bike as it is now and if it's close to where it was we can agree waether it was accurate or not or would everyone like me to go back to my NH Rally settings (pre dyno) so we'll know exactly how accurate it was?
Edited by ArsnlTim (08/16/07 07:22 PM)
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Bucky
Loquacious
Reged: 05/21/06
Posts: 3971
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One could get upset to spent $X,XXX on a big bore campaign, then see these HP numbers, but the big bore's true value is shown in it's torque curve, and the viable performance on road.
I drove a 300 HP truck that would outrun EVERY 350 HP truck on the road, as the 300 had much more torque early on, as the manufacturer had widened the cylinder bore, yet shortened the stroke.
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