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Buell Forum » Knowledge Vault (tech, parts, apparel, & accessories topics) » Dyno Charts/Testing (Show us the POWER!) » Buell Dynamometer/Dyno Testing Archives » Archive through July 22, 2002

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Author Message   Blake Posted on Sunday, June 30, 2002 - 01:57 am:        Aaron, Does your M2's borrowed Force pipe have the baffle in or out? Brian mentioned to me that a baffled Force pipe meets the AMA's maximum allowed noise level. Yeah I know, still pretty darn loud. There's a Cycle-Rama dyno chart that was recently posted here that actually showed a gain in peak HP with the baffle in versus out. Imagine that.   Aaron Posted on Sunday, June 30, 2002 - 08:33 am:        Congrats, Blake! Send me the dyno sheet, or the DYNORUN.xxx file, or whatever, I'll post it. Told ya you'd be over 100. I don't have a baffle for that Force pipe. I took it back off yesterday, just too loud for street use. I'll slap it on for Bonneville, assuming the owner will continue to loan or sell it to me.   Leeaw Posted on Monday, July 01, 2002 - 09:25 am:        $3,000? Ouch. On my bike, which is probably worth less than $5,000. I have to pass.   M2cyclone00 Posted on Monday, July 01, 2002 - 09:27 am:        Blake, I posted two charts comparing them on May 10. I think the difference between the two peak hp numbers was inconsequential, only .8hp. May have been caused by tire slip? Above 3500rpm I prefer the curve without the baffle. Below that it's a bit better with the baffle obviously because of the greater back pressure. The torque curve is a bit better without the baffle between about 4500 to 5500. But, again, the differences are minimal. I can't tell any difference in sound with or without the baffle. Both are quite loud. I run it with the baffle due to a lot of slow putting around commuting & with my girlfriend on her Blast. I will probably take it to North Florida Motor Sports Park so I may need the baffle in to get past the noise restrictions. Dave   Reepicheep Posted on Monday, July 01, 2002 - 03:13 pm:        Leeaw / Blake... On the other hand, my bike, which I bought used with 3000 miles on it about a year old for $5200, it would be VERY cool. $5200 + $3000 gives $8200, for a fantastic looking bike with great character and some very impressive horsepower numbers... Cheapest exotic you will ever run across. (not that I can afford it ) Bill   Leeaw Posted on Monday, July 01, 2002 - 03:35 pm:        I am just trying to find out if the $325 pistons (plus install) are worth the gains. If I could do it all myself, it would a no brainer. Unless I get knocked on the head and become a savant, the cost of the install cuts into my budget.   Petel Posted on Monday, July 01, 2002 - 05:39 pm:        Hi, just wanted to show you the latest Dyno from my 2002 M2. And pick your brains ;-) The bike is a UK 2002 M2 Cyclone using a race can,no discs just a perforated/baffle packed tube,and loud!. Not a problem. The carb is standard 40mm CV Keihin. With standard spring and the standard (Aeron questioned this? NOKK needle shimmed to 1.5mm or two small Dynojet washers. #45 pilot,#195 Dynojet main and the dynojet emulsion/bleed tube. The airbox is standard but with a K+N filter. First run he said it was too rich. So I went richer!! upto the #195 from a #190. I gained 2bhp @ 4000rpm and just over 1bhp @ 5400 but it won`t pull further. Don`t want to loose the midrange increase but it really should pull clean to about 6000. Quick ans. Do I gut the airbox? What is involved? Should I just do another run without an airfilter to determine rich/weak? Thanks for your time. sorry the URL I posted apparently dosn`t work :-( Anyway the power curve takes a steep dive from 5400 showing 84.9bhp to shut-off at 6700. Torque is nice and flat at 80-84ftlb but that dives at 5500 as well. Looks rich to me but again it`s a standard air box. Oh well, time to start cutting holes in it. Pete.   Blake Posted on Monday, July 01, 2002 - 11:46 pm:        For a stockish engine, I think your results are VERY good... 85 RWHP and 84 FT-LB!   Petel Posted on Tuesday, July 02, 2002 - 07:09 am:        Thanks Blake, yes it`s not bad for a stock bike but I feel I`m still loosing 5-6bhp between 5500-6200rpm where the curve flattens then drops.   M2cyclone00 Posted on Tuesday, July 02, 2002 - 08:15 am:        Leeaw, I think good forged pistons are worth it, especially if you lighten the valve train as well. We lightened the rotating weight in my M2 by almost 1/2lb. There is a noticeable difference in vibration & bolts don't seem loosen anymore! Or maybe that's my imagination. I installed JE pistons & bought them at a far lower price than the Hurricanes. The Thunderstorm pistons are rather heavy. Most forged pistons are significantly lighter. Anyone else have an opinion or observation on this? Dave   Leeaw Posted on Tuesday, July 02, 2002 - 09:30 am:        M2cyclone, Brian Nallin explained to me that the Hurricane's match the squish angle (?) of the TS heads better than the TS pistons. It sounds good to me, just have to see how much it will all cost I guess and go from there. Too bad I no longer live in FL. I would have loved to visit Cycle-Rama, but Miami Beach was not my scene.   Jmartz Posted on Tuesday, July 02, 2002 - 11:48 am:        It takes money to modify your bike in order to make more power. In my case I got Thunderstorm heads with Nallin port job ($950), AAC cylinders and hurricane pistons ($1100), race exhaust, can and a/c ($750), Thunderheart ignition module ($350), Crane coil and cables ($150), CV 44 with SE manifold ($525), SEII camset and springs with Ti collars ($350), Ti pushrods ($300), Jims rockers ($350) and some other assorted items like jets, gaskets, needle and external crankcase breething ($300)... This adds up to over $5,000 and I'm not sure I covered everything. For my money and effort over a period of several years I've gotten the engine up to 100 RWHP and had quite a bit of enjoyment doing it. A Ducati for 17,000 that already makes 100 RWHP is starting to look reasonable... José   José_Quiñones Posted on Tuesday, July 02, 2002 - 12:10 pm:        Or a 120 HP VRSF........   Jmartz Posted on Tuesday, July 02, 2002 - 02:02 pm:        I agree wholeheartedly... An American made hot rod (as the s1 once wuz) will alway be my 1st choice. José   Tripper Posted on Tuesday, July 02, 2002 - 11:39 pm:        Black Busa is looking real good.   Jmartz Posted on Wednesday, July 03, 2002 - 08:07 am:        hey Tripper...when are you coming to Ga?   Tripper Posted on Wednesday, July 03, 2002 - 08:46 am:        Move is planned for ~Oct 1.   Jmartz Posted on Wednesday, July 03, 2002 - 09:29 am:        Get the bike ready for a celebratory ride to the mountains. Mine is...   Richieg150 Posted on Sunday, July 07, 2002 - 05:49 pm:        Hey Tripper,Ducati,Busa........still AINT NO BUELL   Tripper Posted on Sunday, July 07, 2002 - 11:06 pm:        Your right Rich, they would be a Ducati or a Suzuki. Still love my Buell, I just feel the need for speed once in a while.   X1glider Posted on Friday, July 19, 2002 - 01:55 pm:        Aaron, I've sent you an e-mail. Help! Bob   X1glider Posted on Friday, July 19, 2002 - 02:06 pm:        BTW, Aaron, what I sent you was done on a DJ250 which is why the numbers are about 10% lower than when I originally tested an a DJ150.   X1glider Posted on Friday, July 19, 2002 - 02:33 pm:        Aaron, I sent a reply. Maybe my baffle could be modified? And thanks in advance. Bob   Blake Posted on Friday, July 19, 2002 - 04:46 pm:        X1G, Why should the DJ250 report lower numbers than a DJ150??? The rest of you chatty girls... topic?   Pammy Posted on Friday, July 19, 2002 - 08:12 pm:        A DJ250 shouldn't read lower that a DJ150. The DJ250 is the 'happy' dyno, remember? It's the one that I have.   Gcpoland Posted on Saturday, July 20, 2002 - 11:35 am:        More depends on the software package being used. Dynojet has made several revisions, with differant results.   Buellzebub Posted on Saturday, July 20, 2002 - 02:08 pm:        Blake, the 250 is an eddy current dyno and the 150 is an inertia dyno. the eddy current version is supposed to read more accurately [depends upon software, settings and keyboard actuator]. the eddy current dyno allows you to dynamically load the engine by using a computer controlled "magnetic brake" which can simulate actual riding conditions. time to ride   Blake Posted on Saturday, July 20, 2002 - 05:49 pm:        The 250 is an inertial dyno that also includes an eddy current system. Nallin Racing ran my M2 on their D250. They did not use the eddy current to measure WOT performance. They did use the eddy current to check performance under cruising conditions.   Aaron Posted on Sunday, July 21, 2002 - 01:33 am:        1998 S1 owned by Big Hairy Ralph 88" motor Axtell cylinders Heads prepped by Zippers Red Shift 585's Mikuni HSR42 28" straight pipes 1997 S1 owned by Big Hairy Ralph 80" motor Axtell cyls Mikuni HSR42 Red Shift 567's race kit header + Supertrapp   Ralph Posted on Monday, July 22, 2002 - 11:54 am:        That pull on the 88 had 28 inch "straight" pipes. The 80" has Red Shift 563s 567s. Exhaust is a race header with the old 2 1/2 Supertrapp muffler. bighairyralph got it ... updated the above post ... thanks (AW)