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  • A Vintage gasser

    This is a heli I bought some time ago, probably year and a half ago. I got it on Ebay and at the time I was familiar with the brand name but didn't know much about the company. The seller lead me to believe parts were readily avialable and after I got it I quickly discovered this was not the case. He also told a couple other fibs as well and in the end we settled with him giving me a partial refund for the misleading listing.

    So I think, if memory serves, I have about £380.00 into it (came with wood blades and basic servos). In retrospect I probably should have rammed it back down his throat and made him take it back and refund me, but at the same time I liked the look of it and was curious to see if I could get it going.

    At the very least it is a good example of this particular model (Kalt GS Alpha, circa 1992) and would seem to have very low hours for a heli that is potentially 18 + years old!

    Shortly after I got it I started the engine just to make sure it runs and it started very easily and ran well. But I didn't want to try to fly it until I could source some spares and I did also consider the possibility of letting it go to a collector but I never tried to sell it.

    Anyway, I eventually networked with some other Kalt owners, found lots of info, gathered up some spares here and there and now I am ready to try to get this old bird in the air.

    I have it basically ready to fly now and although I don't have spares for everything I think it will be OK. I don't have a spare clutch but could probably mod something else. It has a piano wire tail drive which I don't have a spare for but there are ways to convert it to belt drive or mod a Raptor 60 tail etc. So only a few things that might really ground it.

    I started it yesterday and even after not having touched it for probably a year it fired right up on a few pulls and ran very well. But then it started to rain

    So anyway, that's the story so far. I have networked a bit with a few people still flying these helis and they love them. It has a Kalt 'KG22' engine which I believe is basically a rebranded Zenoah G23. The peculiar feature of the Kalts is that the swash does not go up or down, it tilts for cyclic but collective pitch is controlled via a bit of wire that rides in a small slot in the main rotor shaft, so there is zero interaction between collective and cyclics and it makes the linkage very simple.

    As soon as the weather behaves a bit I'll take it back out for a short hover and adjust the trim a bit, dail in the gyro etc. and then if all that is successful it will get a proper flight in the near future.
    Attached Files
    Last edited by trillian; 02-05-2010, 06:15 PM.
    Kasama, Minicopter, Henseleit, JR, Shape, Beam
    Robbe, RMJ Raptor gasser, powered by
    Spartan, Spirit, BeastX, Kontronik, CY Total-G, DX8

    member of Epsom Downs and Bloobird clubs
    Proud recipient of 7 EGS! and a platinum star

  • #2
    Even though its a dated heli it looks real good,shame about the spares situation but if your just going to fly circuts ect and gentle flight it should be ok, nice post.





    Comment


    • #3
      Originally posted by Adrian View Post
      Even though its a dated heli it looks real good,shame about the spares situation but if your just going to fly circuts ect and gentle flight it should be ok, nice post.

      Yeah this one is in very good shape and it's a fairly modern looking design so it doesn't look as old as it is. I don't know when they stopped making this model so not sure how old it is exactly but there's a review of the GS Alpha in a Dec 1992 Model Helicopter World mag, so it is potentially from sometime in 1992.

      It's a very simple machine and has all metal frames and linkage. The slotted main shafts can be hard to find but I have a few of them and have spoken to some people that can make them. The main drive gear with crown gear for the tailrotor is very hard to find. 'Not sure about feathering shafts but in a pinch I think something could be improvised. But basically almost no parts can just be bought new, it's all 2nd hand or a few stores with old stock.

      As far as I know Kalt was bought by another company, for what reason I don't know, and the kalt heli line ended there. (I think this was sometime around 1999/2000 ish but could be a few years give or take).
      Kasama, Minicopter, Henseleit, JR, Shape, Beam
      Robbe, RMJ Raptor gasser, powered by
      Spartan, Spirit, BeastX, Kontronik, CY Total-G, DX8

      member of Epsom Downs and Bloobird clubs
      Proud recipient of 7 EGS! and a platinum star

      Comment


      • #4
        sheryl do the mechanical parts from the jet ranger i have fit this??
        Ron

        hobby-hangar.co.uk
        SWRCH-GO big or Go home!
        http://www.ultimatebuildandfly.co.uk/

        Comment


        • #5
          Reading this thread has reminded me of how great my 12year old F1 carbon max 61 is to fly and has given me a kick up the ar** to get it in the air again
          Nice thread

          Tripler/Helipete/
          "I love the smell of nitro in the morning" & the odd electrickery thingy's

          Comment


          • #6
            I think heliproz may do spares for the kalt.





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            • #7
              tripler
              don't go putting the f1 into a scale body as it will overheat like mad
              i know mines in a bell 222, it has 3 pc fans blowing & drawing air out of the body to keep it cool
              and it also flies miles better in p&b form
              Attached Files
              Hirobo Turbulence D3
              a bunch of bls servo's and a 701 gyro
              Powered by an OS91 hz and a MP2
              Winner of the LHC Scale Cup 2011

              1/4 scale Vario Bell 47 G3
              1/3 scale Vario R22
              2012 LHC Scale Cup Judge
              member of save the flybar foundation
              www.alcesterhelicopterclub.bmfa.org
              sigpic

              Comment


              • #8
                Originally posted by Boggy View Post
                sheryl do the mechanical parts from the jet ranger i have fit this??
                Hi Ron,

                Unfortunately no. The Cyclone mechanics are different, the main drive gear is different and the tail is belt driven (well it's belt on the other cyclone airframe I have). The Cyclone is a bit later model and is more common. Oddly the Baron 30 shares the same crown gear (although some Baron 30's were belt drive). In any case I have another Cyclone so I can see if anything else is compatible.

                Right now I think the most vulnerable part is probably the clutch. I'd like to fit a different canopy as well because I am concerned about the original one cracking due to vibrations as it is quite brittle plastic.
                Kasama, Minicopter, Henseleit, JR, Shape, Beam
                Robbe, RMJ Raptor gasser, powered by
                Spartan, Spirit, BeastX, Kontronik, CY Total-G, DX8

                member of Epsom Downs and Bloobird clubs
                Proud recipient of 7 EGS! and a platinum star

                Comment


                • #9
                  Engine test 2

                  I took the Kalt out in the garden today to see if I could get to a point of
                  a short hover, confirm the tail setup is working and basically just that everything is still OK when it all gets spinning and that the engine runs OK at flying power.

                  Since the last time I adjusted the carb linkage so it closes properly and fixed an issue with the tailrotor hub. I also freed up the tailrotor linkage so it's a bit smoother.

                  Anyway, once again it started easily and seems to run pretty well. I adjusted the throttle curve for a bit slower ramp-up and just temporarily bumped up the pitch so the engine stays more evently loaded.

                  It seemed OK right up to getting light on the skids and ready to hover. I could tell it needed some down elevator so I dailed in a bit of trim and then it made a very alarming clacking noise. I'm paranoid about the clutch breaking or something so that's what I'm always thinking. Anyway, I stopped the engine and walked over to the heli and noticed the recoil starter is now hanging by one bolt.

                  It appears that the unpleasant noise was just some part of the recoil starter hitting a bit of the plate on the engine that spins around.

                  I had not checked the tightness of the starter unit and it just vibrated loose. But I'm not seeing any other worrying vibrations or noises.

                  So it seems a total tightness check of all nuts and bolts is in order and a visit from the blue locktite on the starter unit. After that, fingers crossed, it might be ready to fly.
                  Kasama, Minicopter, Henseleit, JR, Shape, Beam
                  Robbe, RMJ Raptor gasser, powered by
                  Spartan, Spirit, BeastX, Kontronik, CY Total-G, DX8

                  member of Epsom Downs and Bloobird clubs
                  Proud recipient of 7 EGS! and a platinum star

                  Comment


                  • #10
                    Trillian,

                    Trevor Wallinger at Midlands used to be a big Kalt fan, as did Noel Cross. I'd be surprised if they didn't have some spares stashed away!

                    I also have a feeling that (now defunct) TSKs were closely related to Kalt as well, so you may find that some TSK parts will fit.

                    I had a Hirobo Eagle gasser for a while. It flew well, but the extra weight made itself known if you tried to stop in a hurry! It also made the autos quite interesting!

                    Best of luck!

                    --
                    Pete
                    Pete

                    No matter how much you push the envelope, it'll still be stationery.

                    Comment


                    • #11
                      Originally posted by pchristy View Post
                      Trillian,

                      Trevor Wallinger at Midlands used to be a big Kalt fan, as did Noel Cross. I'd be surprised if they didn't have some spares stashed away!

                      I also have a feeling that (now defunct) TSKs were closely related to Kalt as well, so you may find that some TSK parts will fit.

                      I had a Hirobo Eagle gasser for a while. It flew well, but the extra weight made itself known if you tried to stop in a hurry! It also made the autos quite interesting!

                      Best of luck!

                      --
                      Pete

                      I do recall emailing Midlands way back when I first got this heli and asked about certain parts and the answer was no they didn't have them. I think I probably asked about the crown drive gear and main rotor shaft, stuff like that. Unless they keep a secret stash and you have to know someone who knows someone
                      Kasama, Minicopter, Henseleit, JR, Shape, Beam
                      Robbe, RMJ Raptor gasser, powered by
                      Spartan, Spirit, BeastX, Kontronik, CY Total-G, DX8

                      member of Epsom Downs and Bloobird clubs
                      Proud recipient of 7 EGS! and a platinum star

                      Comment


                      • #12
                        Kalt gasser

                        Sheryl,
                        Nice classic mate,i had the pleasure of flying one last year and what a nice stable machine it was,have a look at e bay i noticed a Barron 20? bit overpriced but a deal can always be done?
                        keep us up to date
                        cheers Euan.

                        Comment


                        • #13
                          Originally posted by euan galloway View Post
                          Sheryl,
                          Nice classic mate,i had the pleasure of flying one last year and what a nice stable machine it was,have a look at e bay i noticed a Barron 20? bit overpriced but a deal can always be done?
                          keep us up to date
                          cheers Euan.
                          Every now and then Baron 30's come along and the prices they sell for varies wildly. I recently saw one sell for over £160.00 on Ebay. I think it was with a tx and everything but I still found that surprising.

                          Early last year I bought a Baron 50 and a Baron 30 along with an almost complete unbuilt new Baron 50 in the box. I don't know why really, I was just on the lookout for any Kalt parts and I went down to Southampton to see these parts that were advertised on the BMFA. But the Baron 30 shares the same main drive gear and otherwise it's really nothing special it's like a forerunner to the Raptors or something. So I need to sell all the other bits to the Baron 30 I don't need. I also bought a tail belt drive conversion for the Baron 30 that could be adapted to the GS with a longer belt and I might go that route just to try to get a bit more robust tail setup.
                          Kasama, Minicopter, Henseleit, JR, Shape, Beam
                          Robbe, RMJ Raptor gasser, powered by
                          Spartan, Spirit, BeastX, Kontronik, CY Total-G, DX8

                          member of Epsom Downs and Bloobird clubs
                          Proud recipient of 7 EGS! and a platinum star

                          Comment


                          • #14
                            A Vintage gasser

                            Hi, I would stick with the piano wire drive. They are simple and reliable and plain 16 swg wire bent to form the required drive link. The key is to ensure you get the plastic spacers in the boom set right. I had a 30mx in 1998 and made aluminium spacers with proper bearings in it. I have a full set of gs alpha instructions which I can scan for you. Just restoring my alpha at the moment, but need a main shaft.

                            Comment


                            • #15
                              if you are stuck for a mainshaft look at the vario ones
                              find one about the same length and dia
                              if yours has the slot machined into the shaft take the new shaft to a local engineering shop and ask them to machine the slot into it

                              or email quick uk and see if their engineering devision would make a one off shaft
                              Hirobo Turbulence D3
                              a bunch of bls servo's and a 701 gyro
                              Powered by an OS91 hz and a MP2
                              Winner of the LHC Scale Cup 2011

                              1/4 scale Vario Bell 47 G3
                              1/3 scale Vario R22
                              2012 LHC Scale Cup Judge
                              member of save the flybar foundation
                              www.alcesterhelicopterclub.bmfa.org
                              sigpic

                              Comment

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