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6 speed tranny's for Harley's

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  • #46
    Originally posted by Teknition View Post
    Just so you know, a helical cut gear is stronger as well as quieter than a straight cut gear due to more contact area on the tooth surface of the helical cut gear. The only real disadvantages to helical cut gears are that they produce side thrust and must be in constant mesh with its mating gear. Straight cut gears with the assistance of syncro's can be engaged and disengaged quite easily and produce no side thrust.

    Tek
    I don't know about the 6 speed tranny's but on the 4 speeds all the gears are in contact at all times. Shifting is accomplished through shifting clutch dogs that slide between the gears in effect locking or unlocking them to the mainshaft or counter shaft. Page 26 of this Andrews catalog shows the clutch dogs as figure C.
    http://www.andrews-products.com/Down...torcycle05.pdf
    To all who contribute to this board.
    My sincere thanks , Pete.

    Pureox OA
    Westinghouse 300 amp AC stick
    Miller Syncrowave 250
    Hexacon 250 watt solder iron

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    • #47
      Thanks for the link burninbriar, I've never seen the inside of a Harley gearcase and I'm always looking to learn something new. I was referring to gears in general, not necessarily harley transmissions. In applications where the engineers wish to couple and uncouple 2 gears by sliding one of the gears over on a shaft until the teeth mesh with the other gear you will see straight cut gears. Typically, when you see a helical cut gear it will be in constant mesh with the opposing gear.

      Tek

      Millermatic 350P
      Dynasty 200Dx
      Hypertherm Powermax 1000
      Victor Journeyman O/A
      Offshore Mill and Lathe
      Tunes to weld with by Peavey

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      • #48
        harco; where did you get the 27 hp R75/5 BMW numbers from?
        The new bigger 750cc R75/5 came out in 1970 with 50 hp and 43 ft/lbs tq with
        4 speeds until the 1975 R75/6 series began with the 5 speeds.
        Depending on solo or sidecar use it could be ordered with the option of two different rear drive gear ratios. I'll take my R90/6 or R90s on a trip where 600-800 miles is a daily thing going across country, funny thing I can't find the dirty chain and I can go from California to Florida without parts falling off.

        "Beemer Nut" on other forums.....=o&o>.....

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        • #49
          Originally posted by Carl W. View Post
          I'll take my R90/6 or R90s on a trip where 600-800 miles is a daily thing going across country, funny thing I can't find the dirty chain and I can go from California to Florida without parts falling off.

          "Beemer Nut" on other forums.....=o&o>.....
          What fun is that ?
          To all who contribute to this board.
          My sincere thanks , Pete.

          Pureox OA
          Westinghouse 300 amp AC stick
          Miller Syncrowave 250
          Hexacon 250 watt solder iron

          Comment


          • #50
            Testing for reactions. Usually I get the single finger salute within the 50 mile radius of home by beep beeping a broken down Harley, even if they ride home in a pickup bed.
            On the open road and at rest stops Harley owners are nice polite people that also like to ride. Fun to guess at how people act against different brands of scooters, to me I just enjoy the ride.
            .....=o&o>.....

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            • #51
              I've definitely done my share of fixing my bike across the country. I don't regret it one bit, some of the best people I've met and some of the best times I've had came as a result of being broke down in the middle of nowhere.
              I also don't care what some one else rides, if you like riding, ride what you like, or can afford.
              Its funny though, when it comes to the "if you don't ride ---- you're not ---" attitude, I've seen it most out of the Goldwingers, believe it or not.
              To all who contribute to this board.
              My sincere thanks , Pete.

              Pureox OA
              Westinghouse 300 amp AC stick
              Miller Syncrowave 250
              Hexacon 250 watt solder iron

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              • #52
                I must be lucky and not know it, the ride season is a lot longer here in sunny California vs Pennsylvania. I get a kick out of American Chopper when it's snowing on a test ride. A few years ago I took a trip to Canada and got caught in a snow storm, not much fun and too cold. I rather watch snow on TV. Two wheel drifting will hone your reflexes. With 9 scooters some days I want to thump the 600cc Matchless single, the back roads on 750 Triumph, do the twisties on the 850 Norton's or a little highway time on the Beemers. Decisions decisions.
                .....=o&o>.....

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                • #53
                  I was headed for Cincinnati Ohio once, there was a drizzling rain, nothing I couldn't handle, suddenly it turned to hail and it felt like some one shot me in the face. I know what you mean about the rough weather, any more I prefer the sunny days also, except in Phoenix. Too hot there to ride during the day in the summer. The faster you go the hotter it is. Like standing in front of a heat gun.
                  To all who contribute to this board.
                  My sincere thanks , Pete.

                  Pureox OA
                  Westinghouse 300 amp AC stick
                  Miller Syncrowave 250
                  Hexacon 250 watt solder iron

                  Comment


                  • #54
                    Originally posted by Carl W. View Post
                    harco; where did you get the 27 hp R75/5 BMW numbers from?
                    "Beemer Nut" on other forums.....=o&o>.....
                    Carl,

                    The HP figure came from the owner I believe. It was a few years ago I think when he told me. I was looking for another bike and he owns a dealership, he was trying to get me to buy an 800cc bike and I said something about not enough power for a sidecar +. I'm probably wrong on the model, but the point I was trying to make ( I think ) was how much was done so long ago with relatively much less power than today. In any case it was impressive seeing that bike/sidecar and 3 people on it.


                    Beemer Nut? bah the only Beemers worth owning would be the R1200 GS or the F650 GS

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                    • #55
                      Originally posted by Carl W. View Post
                      I must be lucky and not know it, the ride season is a lot longer here in sunny California vs Pennsylvania.
                      .....=o&o>.....
                      Hey I am in Maryland and the riding season is 365 days, Some of those days are just more exciting than others. I'd say ICE is the only thing that keeps me off the bike! At least in colder weather you don't mind wearing all that extra protective clothing!

                      Originally posted by burninbriar
                      Too hot there to ride during the day in the summer. The faster you go the hotter it is. Like standing in front of a heat gun.
                      It used to get like that in El Paso, TX. I don't like riding in that kind of heat.

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                      • #56
                        To add on my previous post, a 1955 R50/2 (252/2) with it's wild 6.8cr cranks out 26 hp. A Kick in the butt is motoring around in my 66 (year sold as 67) R27 the little 250cc thumper with rubber mounted motor. It cranks out 18 hp, has the solo rear drive ratio not the lower sidecar gears.

                        To each his own, i've gone on a few trips with a friends 1200 as well a week around home on a Fundura 650, personally no thank you I would rather ride on my R90/6 or the R90s. No oil or water cooling just basic air cooled.

                        Newer isn't always better.

                        I can live without plastic bikes besides I can work on every part of it right down to the crank at home.
                        I saw what those new plastic zoom zoom BMW's can or shall I say can't do at a BMW rally, called crash and splat one year and a few riders bragged about their speeding tickets. I must be old school like dad who rode bike at 80, he rode bike around the world during WWII, dry lake speed runs and stayed alive.
                        Best part my son will be the 4th generation up Lombard Street in San Francisco. (twisty street one way down).

                        .....=o&o>.....

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                        • #57
                          Originally posted by Carl W. View Post
                          To add on my previous post, a 1955 R50/2 (252/2) with it's wild 6.8cr cranks out 26 hp. A Kick in the butt is motoring around in my 66 (year sold as 67) R27 the little 250cc thumper with rubber mounted motor. It cranks out 18 hp, has the solo rear drive ratio not the lower sidecar gears.

                          To each his own, i've gone on a few trips with a friends 1200 as well a week around home on a Fundura 650, personally no thank you I would rather ride on my R90/6 or the R90s. No oil or water cooling just basic air cooled.

                          Newer isn't always better.

                          I can live without plastic bikes besides I can work on every part of it right down to the crank at home.
                          I saw what those new plastic zoom zoom BMW's can or shall I say can't do at a BMW rally, called crash and splat one year and a few riders bragged about their speeding tickets. I must be old school like dad who rode bike at 80, he rode bike around the world during WWII, dry lake speed runs and stayed alive.
                          Best part my son will be the 4th generation up Lombard Street in San Francisco. (twisty street one way down).

                          .....=o&o>.....
                          I'll have to go see my beemer buddy .... don't ride with him much since I moved out into the woods. He was trying to sell me a Suzuki VZ800 and telling me it could be triked. I told him it was underpowered for my liking to be triked and that is when he brought up his beloved BMW. I know the beemer he owns was 20'something HP or so he said ... I know he still owns it, but I think he has done some restoration work and no longer a daily rider.

                          I won't own one of the new beemers as I think they are overpriced. I hear guys complaining about prices for parts as well.

                          My fun bike is a lil Suzuki 650 ... get's me where I wanna go, even if I have to hit the fire trails to get there ..... cruises the interstate at speeds well above the posted. Nice bike, can run the heck out of it, never worry about riding in bad weather, there's no chrome to clean and polish. We did a 1,000 mile weekend ride, me on the DL650, one Honda Shadow 1100, and my brother in law on his HD Fatboy. It was a 4 day weekend and I swear they spent too much time cleaning those bikes. I went out on my own, hit a few fire roads and came back covered in mud. They were having heart attacks .... so I went to one of thos car was places, hosed the bike off and drove down the highway to dry it off.

                          When I feel like turning wrenches, geezing, and cruising down to the ice cream stand, I dust of the 1972 HD XLCH 1000. That's my 'baby', because it demands so much care.

                          We have 5-7 bike here, 7 if ya count the 2 in pieces

                          Each has it's purpose. Don't think they make one bike that does it all.

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                          • #58
                            I have to admit the older BMW's including the Norton's have the worse seats ever made far as padding and comfort, to enter in shows which I do adding aftermarket is out.
                            Dumb question as I never followed Harley's, wasn't the 72 XLCH still 900cc?
                            I recall the 1000 back when AMF took over Harley, thinking late 70's?
                            Anyone see the Biker Build Off with the all aluminum bike from Oz?
                            That was one of the best looking bikes as far a craftmanship goes, second is the talent of Dave Periowitz from the right coast.

                            .....=o&o>.....


                            Miller Synchrowave 350
                            Millermatic 251 w/30A spoolgun

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                            • #59
                              i saw that duild off that aluminum bike was great, if it was judjed on pure efort he would have taken it for sore. no way to bondo that baby its all work and it was right as rain. take the paint out of the contest and it would have been him for shore. i still think it should have been his. but it was close, that other guy dose some fine paint work.
                              thanks for the help
                              ......or..........
                              hope i helped
                              sigpic
                              feel free to shoot me an e-mail direct i have time to chat. [email protected]
                              summer is here, plant a tree. if you don't have space or time to plant one sponsor some one else to plant one for you. a tree is an investment in our planet, help it out.
                              JAMES

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                              • #60
                                Originally posted by Carl W. View Post
                                Dumb question as I never followed Harley's, wasn't the 72 XLCH still 900cc?
                                I recall the 1000 back when AMF took over Harley, thinking late 70's?
                                The XLCH 1000 dates back to 1972 from what I know. It was referred to as an " Iron Head ". I know there is a website dedicated to the XLCH, but I don't have it saved on this computer.

                                I don't follow Harley's that closely either ... but this one belonged to my father and he bought it new, he had it restored about 2 years before he passed away and my mother told me to take it. All I ever knew about it was my dad, called it his " 72 Sporty ". My mom didn't like it though! ( I think that's why he bought it )

                                I think http://www.bikez.com may have pics of models listed year by year.

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