Horsepower and Kilowatts

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  • Athedra
    XStremely XSive
    • Oct 2009
    • 221
    • Benoni, South Africa

    #1

    Horsepower and Kilowatts

    Had a look at several websites and a few Dyno charts done on XS's.

    Any one have an idea of what they should be? Last one I saw was on youtube on a '80 XS pushing 109HP.

    I want to take mine in for a dyno, but dont have some guideline to work on.
    '79 XS1100 (2H9) named Bones
    1196 Big Bore
    4-1 Cowley exhaust
    750FD Conversion
    Echlin 54mm Racing Cones (Americanese = pods)
    Black Ebony Bottled glazed Tank (To be redone now)
    BMX footpegs
    Tank internally lined (Professionally this time)
    GSX400 Throttle bodies (Under serious investigation)
    Anti Sticky float bowl system
  • Athedra
    XStremely XSive
    • Oct 2009
    • 221
    • Benoni, South Africa

    #2
    Before anyone says it.... go read the threads..........

    After I posted this, found the thread stating 95HP, did a quick search on it, and got it down to 63,4KW

    Sorry
    '79 XS1100 (2H9) named Bones
    1196 Big Bore
    4-1 Cowley exhaust
    750FD Conversion
    Echlin 54mm Racing Cones (Americanese = pods)
    Black Ebony Bottled glazed Tank (To be redone now)
    BMX footpegs
    Tank internally lined (Professionally this time)
    GSX400 Throttle bodies (Under serious investigation)
    Anti Sticky float bowl system

    Comment

    • fredintoon
      Master of XSology
      • Mar 2004
      • 6795
      • Saskatoon SK

      #3
      Originally posted by Athedra
      Had a look at several websites and a few Dyno charts done on XS's.

      Any one have an idea of what they should be? Last one I saw was on youtube on a '80 XS pushing 109HP.

      I want to take mine in for a dyno, but dont have some guideline to work on.
      Hi Athedra,
      if you need the conversion factor, 746 Watts = 1 BHP.
      and while that 109HP may be coming out of the engine be happy to see 85HP getting to the back wheel which is where a dyno usually measures it.
      Last edited by fredintoon; 12-01-2009, 04:07 PM.
      Fred Hill, S'toon
      XS11SG with Spirit of America sidecar
      "The Flying Pumpkin"

      Comment

      • fredintoon
        Master of XSology
        • Mar 2004
        • 6795
        • Saskatoon SK

        #4
        Originally posted by Athedra
        - - - After I posted this, found the thread stating 95HP, did a quick search on it, and got it down to 63,4KW Sorry
        Hi Athedra,
        you gotta throw your conversion chart away.
        1 HP = 0.746 KW is what they beat into me at school and I doubt it's changed since.
        Thus 95HP = 95/0.746 = 127.35KW.
        HTF you got half of that I dunno.
        Fred Hill, S'toon
        XS11SG with Spirit of America sidecar
        "The Flying Pumpkin"

        Comment

        • Rettic
          Truly XSive
          • May 2009
          • 142
          • Charlotte, NC

          #5
          I learnt mats

          Originally posted by fredintoon
          Hi Athedra,
          you gotta throw your conversion chart away.
          1 HP = 0.746 KW is what they beat into me at school and I doubt it's changed since.
          Thus 95HP = 95/0.746 = 127.35KW.
          HTF you got half of that I dunno.
          I hate to burst your bubble.. you multiply to get that conversion..... 95*0.746 = 70.87
          I think some one taught you wrong on conversions.
          http://www.mr2ownersclub.com/converter.htm just to prove it from another source.
          1979 XS 1100SF Serenity
          1981 XJ650 Midnight - Black Betty
          Road Dog 4 Life

          Comment

          • trbig
            Simply used to just post A LOT!
            • Nov 2005
            • 7838
            • Ada, Oklahoma

            #6
            Fred, you need to let the tubes warm up on that old calculator a bit longer I think. It's tough to multiply a number by 0.*** and come up with a larger whole number than the original. lol.

            The conversion I have is 95 x 0.7456999 = 70.84...KW.

            I didn't take a whole lot of math in school though... so check my numbers.

            Tod

            P.S. And everybody in this dang place apparently types faster than me! lol. But at the 85hp that is going to be more reasonable I think.. he is pretty close at 63.3KW.
            Last edited by trbig; 12-01-2009, 05:21 PM.
            Try your hardest to be the kind of person your dog thinks you are.

            You can live to be 100, as long as you give up everything that would make you want to live to be 100!

            Current bikes:
            '06 Suzuki DR650
            *'82 XJ1100 with the 1179 kit. "Mad Maxim"
            '82 XJ1100 Completely stock fixer-upper
            '82 XJ1100 Bagger fixer-upper
            '82 XJ1100 Motor/frame and lots of boxes of parts
            '82 XJ1100 Parts bike
            '81 XS1100 Special
            '81 YZ250
            '80 XS850 Special
            '80 XR100
            *Crashed/Totalled, still own

            Comment

            • fredintoon
              Master of XSology
              • Mar 2004
              • 6795
              • Saskatoon SK

              #7
              Originally posted by Rettic
              I hate to burst your bubble.. you multiply to get that conversion..... 95*0.746 = 70.87
              I think some one taught you wrong on conversions.
              http://www.mr2ownersclub.com/converter.htm just to prove it from another source.
              Hi Rettic and everyone else who posted to say I needed arithmetic lessons,
              yes, you are right.
              If 0.746KW = 1HP then KWs are BIGGER then HPs so I should have MULTIPLIED by the conversion factor.
              Thus 95HP = 70.87KW.
              But where Athedra got 95HP equaling 63.4KW I just dunno.
              I fritzed up basic arithmetic but his conversion chart is just plain wrong.
              Nevertheless I will go eat filth and die.
              Fred Hill, S'toon
              XS11SG with Spirit of America sidecar
              "The Flying Pumpkin"

              Comment

              • Rettic
                Truly XSive
                • May 2009
                • 142
                • Charlotte, NC

                #8
                No offense intended

                I am just a mathematical nut that is all. I don't like miscalculations and maybe a bit harsh about how I address those who do it incorrectly.
                1979 XS 1100SF Serenity
                1981 XJ650 Midnight - Black Betty
                Road Dog 4 Life

                Comment

                • XSokieSPECIAL
                  XS-XJ Guru
                  • Jun 2009
                  • 1631
                  • Tulsa, OK

                  #9
                  Originally posted by Athedra
                  Before anyone says it.... go read the threads..........

                  After I posted this, found the thread stating 95HP, did a quick search on it, and got it down to 63,4KW

                  Sorry
                  Originally posted by fredintoon
                  Hi Athedra,
                  you gotta throw your conversion chart away.
                  1 HP = 0.746 KW is what they beat into me at school and I doubt it's changed since.
                  Thus 95HP = 95/0.746 = 127.35KW.
                  HTF you got half of that I dunno.
                  Originally posted by Rettic
                  I hate to burst your bubble.. you multiply to get that conversion..... 95*0.746 = 70.87
                  I think some one taught you wrong on conversions.
                  http://www.mr2ownersclub.com/converter.htm just to prove it from another source.
                  Originally posted by trbig
                  Fred, you need to let the tubes warm up on that old calculator a bit longer I think. It's tough to multiply a number by 0.*** and come up with a larger whole number than the original. lol.

                  The conversion I have is 95 x 0.7456999 = 70.84...KW.

                  I didn't take a whole lot of math in school though... so check my numbers.

                  Tod

                  P.S. And everybody in this dang place apparently types faster than me! lol. But at the 85hp that is going to be more reasonable I think.. he is pretty close at 63.3KW.
                  Originally posted by fredintoon
                  Hi Rettic and everyone else who posted to say I needed arithmetic lessons,
                  yes, you are right.
                  If 0.746KW = 1HP then KWs are BIGGER then HPs so I should have MULTIPLIED by the conversion factor.
                  Thus 95HP = 70.87KW.
                  But where Athedra got 95HP equaling 63.4KW I just dunno.
                  I fritzed up basic arithmetic but his conversion chart is just plain wrong.
                  Nevertheless I will go eat filth and die.


                  Ain't got none o' that thar fancy college book larnin' like y'all. Yer fixin' ta give me a haid pain.

                  Comment

                  • trbig
                    Simply used to just post A LOT!
                    • Nov 2005
                    • 7838
                    • Ada, Oklahoma

                    #10
                    Don't sewat it Fred. Eating filth on occasion is a good anti-inflamatory. It keeps one's head from swelling up too big.


                    Tod
                    Try your hardest to be the kind of person your dog thinks you are.

                    You can live to be 100, as long as you give up everything that would make you want to live to be 100!

                    Current bikes:
                    '06 Suzuki DR650
                    *'82 XJ1100 with the 1179 kit. "Mad Maxim"
                    '82 XJ1100 Completely stock fixer-upper
                    '82 XJ1100 Bagger fixer-upper
                    '82 XJ1100 Motor/frame and lots of boxes of parts
                    '82 XJ1100 Parts bike
                    '81 XS1100 Special
                    '81 YZ250
                    '80 XS850 Special
                    '80 XR100
                    *Crashed/Totalled, still own

                    Comment

                    • Guy_b_g
                      XSive Maximus
                      • May 2007
                      • 790
                      • Beverly Hills, Florida

                      #11
                      Here is a very good program for conversions such as this, or just about any other measurement conversion you can think of. Versaverter, freeware download.

                      CMS based dynamic web application and site development for business and organizations - web design and software development since 1994


                      I highly recommend this tool for everyone's desktop.
                      Guy

                      '78E

                      Quidquid latine dictum sit, altum videtur

                      Comment

                      • fredintoon
                        Master of XSology
                        • Mar 2004
                        • 6795
                        • Saskatoon SK

                        #12
                        Originally posted by trbig
                        Don't sweat it Fred. Eating filth on occasion is a good anti-inflamatory. It keeps one's head from swelling up too big. Tod
                        Hi Tod and thanks for the kind words.
                        What's really scary is that I used to design nuclear reactor control systems.
                        Fred Hill, S'toon
                        XS11SG with Spirit of America sidecar
                        "The Flying Pumpkin"

                        Comment

                        • Ivan
                          XS-XJ Guru
                          • Jul 2008
                          • 2524
                          • Hutchinson KS

                          #13
                          Originally posted by fredintoon
                          Hi Tod and thanks for the kind words.
                          What's really scary is that I used to design nuclear reactor control systems.
                          So, Fred, how many rads would it take to generate an equivalent amount of steam turbine power to make 95 HP at the shaft? Would it be possible to scale it down tot he point I can have my dream scoot that I only have to replace the reactor core every 10,000 years?

                          This could be FUN!

                          I used to love to convert figures to the least usable unit when I was taking college classes. I think my greatest one was expressing an angstrom size measurement in light-years, but the standard deviation went a bit awry...
                          Ich habe dich nicht gefragt.

                          Comment

                          • Incubus
                            XS-XJ Guru
                            • Aug 2006
                            • 1003
                            • Austin TX

                            #14
                            Fred, did you ever work overseas? Like, maybe, any places that start will, maybe, Cher and end with, say, nobyl?

                            Patrick
                            The glorious rays of the rising sun exist only to create shadows in which doom may hide.

                            XS11F (Incubus, daily rider)
                            1969 Yamaha DT1B
                            Five other bikes whose names do not begin with "Y"

                            Comment

                            • fredintoon
                              Master of XSology
                              • Mar 2004
                              • 6795
                              • Saskatoon SK

                              #15
                              Originally posted by Ivan
                              So, Fred, how many rads would it take to generate an equivalent amount of steam turbine power to make 95 HP at the shaft? Would it be possible to scale it down tot he point I can have my dream scoot that I only have to replace the reactor core every 10,000 years - - -
                              Hi Ivan,
                              you think that you jest but back in the 1970s the Russians built at least one nuclear power plant that was light enough to put into orbit. We had chunks of it in our hot cells after it fell out of the sky and hard-landed in northern Canada.
                              So, in theory, yes. But either the shielding would make the bike weigh some several tons or leaving it off would kill you.
                              And Patrick,
                              my designs were brilliant plus I had Engineers to check my arithmetic.
                              As to Chernobyl, those Russian reactors did have poor emergency shut down systems but the catastrophic failure was caused by operators bypassing several safety interlocks in order to run a safety test while the reactor was still running. Same "more frightened of the bosses than of the reactor" mindset that melted 3-mile island.
                              Fred Hill, S'toon
                              XS11SG with Spirit of America sidecar
                              "The Flying Pumpkin"

                              Comment

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