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Pros and cons of Wind Jammer lowers?

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  • #16
    Craig Vetter response

    Craig,
    Hello from Moline, IL. My first Windjammer was a WJ3 I bought used in ‘81 and hung on my new Yamaha Virago. I had to make the bracket but I cut one up from something else and rode that bike many miles with the WJ3. Anyway I have a question that I’d like to ask and if you find time to answer I would appreciate it. A while back I picked up a low mileage 82 Yamaha 1100 that came with the WJ5 and lowers which were not on the bike.. After riding one cool IL morning I found I had a bike that heated my feet much better than the new modern water cooled Honda I also ride. After getting the bugs worked out of the bike I installed the lowers. My observation after a week is that I’ve found my cold weather bike as I prefer to ride until the snow flies. The question I have about the lowers is as follows:

    It seems to me with the lowers on the air escaping the motor is really only getting out at the bottom and top of the piece covering the carbs\resting on the airbox. While riding my feet get quite hot as does the back half of my fuel tank. I’ve looked at them for some time and have thought about cutting the side covers back towards the fairing approximately where the white line is drawn in the picture. I’m quite mechanically inclined so cutting them is no problem and it would be very sanitary looking. My expectation is that will open up the area that the air exiting the motor can escape some thus providing probably a little less concentrated warm air but over a larger area. The other plus to me is mostly cosmetic as I would prefer to see the carbs and back end of the motor. The lowers as mounted want to turn towards the center or the bike and are stopped at the lowest point where they rest against the lowest portion of the cylinder casting where it meets the bottom end casting. I’ve found no places on these where there might be a bungee cord tying the 2 ends together, no holes, no hooks etc. The lowers also don’t really flap or anything while riding as installed. I realize they might not be as warm trimmed back but the lowers already deflect some of the unheated air out and around the rider which in my book is already a big plus. Would you expect that trimming these back would have any negative results? I realize these were designed many years ago and peoples taste/ideas change over time but I’d really like to have access to the motor with the lowers on.

    After I bought my new Honda last year I started asking if anyone had mounted a Vetter on one and received a lot of “huhs?” I ended up mounting a HD Batwing on my Honda VTX1800 but I’d still rather have a Vetter. The tank is too wide for a Windjammer!

    Thanks for your time.

    John Korschot
    Moline, IL





    Think about where the rain will be directed, too.
    Why don't you trim on a vertical line, about 4" rearward from your proposed line?
    See what it does. You can always keep trimming.
    Thing rain drops and wet ankles.

    Craig
    1970? Honda Z50... gone
    1974? Yamaha 100 Enduro... gone
    1974 Honda CB200... gone
    1981 Yamaha Virago 750... gone
    1993 Honda Shadow 1100... gone
    2008 Honda VTX 1800F
    1982 Yamaha XJ1100J w/850 final, Raptor ACCT
    1979 Yamaha XS1100SF "Chewey" Raptor ACCT

    http://www.johnsoldiron.com

    Comment


    • #17
      That is cool John - nice work.

      John
      John is in an anonymous city with an Alamo (N29.519227,W-98.678980)

      Go ahead, click on the bikes - you know you want to...the electrons are ready.
      '81 XS1100H - "Enterprise"
      Bob Jones Custom Navy bike: Tkat brace, EBC floating rotors & SS lines, ROX pivot risers, Geezer rectifier, new 3H3 engine

      "Not all treasure is silver and gold"

      Comment


      • #18
        The original lowers on my Venturer don't have the extra portion that goes back and partially covers the carbs,etc. Likely a good thing as they would interfere with the enricher arm(choke). Over a LD ride, the lowers will net you couple more mpg overall, and when pouring rain will allow a perfect solid stream of water to run on the topside of whatever your wearing on your feet at the time.............
        81H Venturer1100 "The Bentley" (on steroids) 97 Yamaha YZ250(age reducer) 92 Honda ST1100 "Twisty"(touring rocket) Age is relative to the number of seconds counted 'airing' out an 85ft. table-top.

        Comment


        • #19
          Trust me if you ever ride in cold weather do not modify those lowers. Yes they are particularily hot when the temp is high but 90% of the time here we do not get all that hot. On the other hand we get very cold once introduced to below normal riding temps.
          There are in fact holes and indeed there is a rubberized strap between my lowers on my 78E which has a full set fairing and lowers on it. If that strap was not there I would imagine the vibration noises would be huge.
          I personally would hate to see you cut up a good set of lowers but hey it is your bike. Just if you are going to completely waste parts we all desire then please do not taunt us just before destroying them.
          2-79 XS1100 SF
          2-78 XS1100 E Best bike Ever
          80 XS 1100 SG Big bore kit but not fully running yet.
          Couple of more parts bikes of which 2 more will live!

          Comment


          • #20
            Originally posted by Rasputin View Post
            Trust me if you ever ride in cold weather do not modify those lowers. Yes they are particularily hot when the temp is high but 90% of the time here we do not get all that hot. On the other hand we get very cold once introduced to below normal riding temps.
            There are in fact holes and indeed there is a rubberized strap between my lowers on my 78E which has a full set fairing and lowers on it. If that strap was not there I would imagine the vibration noises would be huge.
            I personally would hate to see you cut up a good set of lowers but hey it is your bike. Just if you are going to completely waste parts we all desire then please do not taunt us just before destroying them.
            Strap for what?........guess I'm missin' somethin'. Anyway, think you've misunderstood what he was talking bout removing off the lowers.
            81H Venturer1100 "The Bentley" (on steroids) 97 Yamaha YZ250(age reducer) 92 Honda ST1100 "Twisty"(touring rocket) Age is relative to the number of seconds counted 'airing' out an 85ft. table-top.

            Comment


            • #21
              Originally posted by motoman View Post
              Strap for what?........guess I'm missin' somethin'. Anyway, think you've misunderstood what he was talking bout removing off the lowers.
              He is talking about cutting a chunk of the lowers off....
              Nathan
              KD9ARL

              μολὼν λαβέ

              1978 XS1100E
              K&N Filter
              #45 pilot Jet, #137.5 Main Jet
              OEM Exhaust
              ATK Fork Brace
              LED Dash lights
              Ammeter, Oil Pressure, Oil Temp, and Volt Meters

              Green Monster Coils
              SS Brake Lines
              Vision 550 Auto Tensioner

              In any moment of decision the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing.

              Theodore Roosevelt

              Comment


              • #22
                Originally posted by Rasputin View Post
                Trust me if you ever ride in cold weather do not modify those lowers. Yes they are particularily hot when the temp is high but 90% of the time here we do not get all that hot. On the other hand we get very cold once introduced to below normal riding temps.
                There are in fact holes and indeed there is a rubberized strap between my lowers on my 78E which has a full set fairing and lowers on it. If that strap was not there I would imagine the vibration noises would be huge.
                I personally would hate to see you cut up a good set of lowers but hey it is your bike. Just if you are going to completely waste parts we all desire then please do not taunt us just before destroying them.
                I'm beginning to think the bungee cord and holes ended with the WJ4 lowers, there's simply nothing on the WJ5's to attach to, no holes, no clips, no anything, period. Glad I'm not cutting the frame some of you guys would probably come here and take the bike away from me
                1970? Honda Z50... gone
                1974? Yamaha 100 Enduro... gone
                1974 Honda CB200... gone
                1981 Yamaha Virago 750... gone
                1993 Honda Shadow 1100... gone
                2008 Honda VTX 1800F
                1982 Yamaha XJ1100J w/850 final, Raptor ACCT
                1979 Yamaha XS1100SF "Chewey" Raptor ACCT

                http://www.johnsoldiron.com

                Comment


                • #23
                  Originally posted by WSL91 View Post
                  I'm beginning to think the bungee cord and holes ended with the WJ4 lowers, there's simply nothing on the WJ5's to attach to, no holes, no clips, no anything, period. Glad I'm not cutting the frame some of you guys would probably come here and take the bike away from me
                  only the WJ 5 had lowers like that. The other lowers didnt have that part that extended back like that.
                  Nathan
                  KD9ARL

                  μολὼν λαβέ

                  1978 XS1100E
                  K&N Filter
                  #45 pilot Jet, #137.5 Main Jet
                  OEM Exhaust
                  ATK Fork Brace
                  LED Dash lights
                  Ammeter, Oil Pressure, Oil Temp, and Volt Meters

                  Green Monster Coils
                  SS Brake Lines
                  Vision 550 Auto Tensioner

                  In any moment of decision the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing.

                  Theodore Roosevelt

                  Comment


                  • #24
                    windjammer

                    i have a wj4 on my 80sg that looks like that to a tee. i take my lowers off in the summer as it gets 90-100 degrees here in iowa. i know what he's talking about with the heat.but they really help in the colder months. they definately help in rainy weather keeping legs dry. and yes they vibrate against the air box. and there in no holes or brackets for any bungee or anything else in my lowers. my lowers came with my bike when purchasd over 12yrs ago. i have learned over the years not to mess with someone elses design. it was built that way for a purpose
                    when you want something bad enough, don't let anything stand in your way, and don't take "no" for an answer. EVER

                    graybird78
                    80 sg (old faithfull)

                    Comment


                    • #25
                      They have been cut!

                      So here's an update. Cut the lowers a while back and absolutely love them. Before my feet would roast and the back of the tank would get hot. Now the air coming out is evenly distributed behind the lowers, no particular HOT spots. They stay in place and don't rattle. I can see my motor! Only down side I can guess is that if you ride in the rain more rain may get to the rider but then again you are already in the rain. The last couple mornings have been in the low 50s and these felt great. They area a bit warm with its 90 though. If I had wanted a bike covered in plastic I'd have bought a Gold Wing : )











                      1970? Honda Z50... gone
                      1974? Yamaha 100 Enduro... gone
                      1974 Honda CB200... gone
                      1981 Yamaha Virago 750... gone
                      1993 Honda Shadow 1100... gone
                      2008 Honda VTX 1800F
                      1982 Yamaha XJ1100J w/850 final, Raptor ACCT
                      1979 Yamaha XS1100SF "Chewey" Raptor ACCT

                      http://www.johnsoldiron.com

                      Comment


                      • #26
                        You did a better job of trimming the plastic that I did. Look good.
                        Skids (Sid Hansen)

                        Down to one 1978 E. Stock air box with K&N filter, 81H pipes and carbs, 8500 feet elevation.

                        Comment


                        • #27
                          Very nice bike and I understand why you did what you did cutting. The airflow on you is one problem solved but you may deal with another one now. My lowers were always cut off like that and made that way.Basically the well nuts in the upper was all there was to support. I had to make an extra support bracket to keep the lowers from pressing in against the engine fins and flapping in the wind. If they flap they also soon wear out the well nuts and then settle in against the engine fins, that will melt them and make wear marks on the fins. I would suggest you dedicate a little extra time into making brackets to keep them stable.

                          I know this does not pertain to your bike but as far as functionallity I feel lowers are also needed on a bike with saddlebags to help with stabilization of airflow. These bikes tend to have an issue with high speed wobble and it can be enhanced by fairing and saddlebags. You will notice less stability with bags if you do not have lowers.
                          To fix the problem one should not make more assumptions than the minimum needed.

                          Rodan
                          https://www.youtube.com/watch?v=khm6...liHntN91DHjHiS
                          1980 G Silverbird
                          Original Yamaha Fairfing and Bags
                          1198 Overbore kit
                          Grizzly 660 ACCT
                          Barnett Clutch Springs
                          R1 Clutch Fiber Plates
                          122.5 Main Jets
                          ACCT Mod
                          Mac 4-2 Flare Tips
                          Antivibe Bar ends
                          Rear trunk add-on
                          http://s1184.photobucket.com/albums/z329/viperron1/

                          Comment


                          • #28
                            Originally posted by WSL91 View Post
                            I read about the bungee cord on the site too, mine don't have anything to attach one to, no holes etc. The way they are attached to the fairing they are trying to go inward and are stopped by where the bottoms rest right at where the cylinder casting ends and the bottom end casting begins. I might drop Craig a note though thats a good idea.
                            Better look again.......where the black push-in pins are. Aside from that, no cooling issue leaving them on year-round.........mine were on from the factory for 24yrs. before I started taking them off. On a LD ride, the lowers left on WILL get you an additional 2mpg, and if it's pouring rain, they'll run a river right on your toes.......BTW, cutting THOSE lowers is not a good choice.
                            Last edited by motoman; 08-18-2012, 05:04 PM.
                            81H Venturer1100 "The Bentley" (on steroids) 97 Yamaha YZ250(age reducer) 92 Honda ST1100 "Twisty"(touring rocket) Age is relative to the number of seconds counted 'airing' out an 85ft. table-top.

                            Comment


                            • #29
                              Originally posted by motoman View Post
                              Better look again.......where the black push-in pins are. Aside from that, no cooling issue leaving them on year-round.........mine were on from the factory for 24yrs. before I started taking them off. On a LD ride, the lowers left on WILL get you an additional 2mpg, and if it's pouring rain, they'll run a river right on your toes.......BTW, cutting THOSE lowers is not a good choice.
                              That's ok, I'll live with them. No one but me has to run them and the bike did not burst into flames. And there were/are no holes for bungee cords, maybe that was a WJ4 thing.
                              Last edited by WSL91; 08-18-2012, 07:38 PM.
                              1970? Honda Z50... gone
                              1974? Yamaha 100 Enduro... gone
                              1974 Honda CB200... gone
                              1981 Yamaha Virago 750... gone
                              1993 Honda Shadow 1100... gone
                              2008 Honda VTX 1800F
                              1982 Yamaha XJ1100J w/850 final, Raptor ACCT
                              1979 Yamaha XS1100SF "Chewey" Raptor ACCT

                              http://www.johnsoldiron.com

                              Comment


                              • #30
                                Originally posted by ViperRon View Post
                                Very nice bike and I understand why you did what you did cutting. The airflow on you is one problem solved but you may deal with another one now. My lowers were always cut off like that and made that way.Basically the well nuts in the upper was all there was to support. I had to make an extra support bracket to keep the lowers from pressing in against the engine fins and flapping in the wind. If they flap they also soon wear out the well nuts and then settle in against the engine fins, that will melt them and make wear marks on the fins. I would suggest you dedicate a little extra time into making brackets to keep them stable..
                                Sounds like good advice, thanks.
                                1970? Honda Z50... gone
                                1974? Yamaha 100 Enduro... gone
                                1974 Honda CB200... gone
                                1981 Yamaha Virago 750... gone
                                1993 Honda Shadow 1100... gone
                                2008 Honda VTX 1800F
                                1982 Yamaha XJ1100J w/850 final, Raptor ACCT
                                1979 Yamaha XS1100SF "Chewey" Raptor ACCT

                                http://www.johnsoldiron.com

                                Comment

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