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  • Originally posted by psr View Post
    Try Texonic Instruments in Bangy..they used to deal in digital Frequency counters...which is the RPM meter..I will check up here also.
    Ok got it.Anything technical in particular we should mention to them?
    Life begins, once you hit the power band !!

    Comment


    • Originally posted by psr View Post
      Try Texonic Instruments in Bangy..they used to deal in digital Frequency counters...which is the RPM meter..I will check up here also.
      Texonic Instruments

      They mention only IT related products.
      Life begins, once you hit the power band !!

      Comment


      • @psr

        Texonic Instruments Sjp Road in Silver Jubilee Park Road Bangalore - Justdial

        That address is the one you mentioned about i think.What are the things which we might need and what might be the approximate cost?
        Life begins, once you hit the power band !!

        Comment


        • Originally posted by gixxer_junkie_m View Post
          @psr

          Texonic Instruments Sjp Road in Silver Jubilee Park Road Bangalore - Justdial

          That address is the one you mentioned about i think.What are the things which we might need and what might be the approximate cost?
          Yes that's the one..I will talk to the Chennai office people and get you the details by next week..If it is not available then i can get it here and send it to you.
          Normally the Frequency counter starts at Rs500/- and it is digital.
          When Was The Last Time,You Did Something For The First Time.

          Comment


          • The tacho's that are available in all Indian bikes are Digital only, right ? Apart from the way it displays. (Needle movement or digi analogue display like in FZ or ZMR).

            I would say its better to get the inner tacho of Unicorn or Stunner or Classic Pulsar and find a casing for it. Paying 500rs for a custom built one, I don't feel its sensible. Concerns with accuracy.

            The tachometer from digital speedo units like in RTR or Pulsar's or ZMA is assembled in one circuit board. So if u want to use from that then ull ve to break the circuit board and find where the links are broken, fix it and make sure the circuit works fine.

            I saw this with one mechanic in Mysore. Guess its accurate but he said he paid 5000rs 3 years back

            Comment


            • Originally posted by gixxer_junkie_m View Post
              you would have to buy the auto cam-chain tensioner of the RTR 180 too.
              Hmm,
              any changes in the valves required ???

              I also have done a bit of calculations into how easy this modification would be on a Fiero or Apache 150 for converting it to 180cc by using bore kit of RTR180.

              But I think the RTR160 is differently configured and its bore kit won't be an easy fit.
              Reason,
              The engine of RTR160 is different approach from Fiero.
              1.Fiero: Bore/Stroke=57mm/57.8mm, Cylinder volume (Pi)r.sq.X h =147.4 cc
              2.RTR180: Bore/Stroke=62.5mm/57.8mm, Cylinder volume (Pi)r.sq.X h =177.2cc
              So,just putting the bore kit in with the piston pumping the stock con-rod and crank would suffice.
              On the other hand for the over-square configuration of,
              RTR160: Bore/Stroke=62.0mm/52.9mm, Cylinder volume (Pi)r.sq.X h =159.6cc
              In here,just the 62mm bore kit would pump a longer stroke and so the cylinder would be shorter.
              In the above formula, Pi=3.14,r(radius)=bore/2,h(height)=stroke,sq.=signifies square(as in square root)

              Now the thing that makes me happy is that with the RTR180 kit Fiero can be easily modded.
              Next, I started feeling that such mods can also be carried on my Suzuki GS150R, which is perhaps the only 150cc remnant of the Fiero based engine.
              GS150R: Bore/Stroke=57mm/58.6mm, Cylinder volume (Pi)r.sq.X h =149.5cc
              But the problem here is that the GS150R carries a longer stroke than the RTR180 or the Fiero based stroke configuration, which means the bore kit of RTR180 would fall shorter for the stock big stroke of GS150R.

              So how can these problems be solved ????
              I mean that since your (gixxer_junkie_m) bike uses Karizma bore kit, the engine of Karizma has a very long stroke of 66.2mm, so you must be knowing how to adjust in such places.
              Hell's Angel
              sigpic

              Comment


              • Originally posted by MACH50 View Post
                Hmm,
                any changes in the valves required ???

                I also have done a bit of calculations into how easy this modification would be on a Fiero or Apache 150 for converting it to 180cc by using bore kit of RTR180.

                But I think the RTR160 is differently configured and its bore kit won't be an easy fit.
                Reason,
                The engine of RTR160 is different approach from Fiero.
                1.Fiero: Bore/Stroke=57mm/57.8mm, Cylinder volume (Pi)r.sq.X h =147.4 cc
                2.RTR180: Bore/Stroke=62.5mm/57.8mm, Cylinder volume (Pi)r.sq.X h =177.2cc
                So,just putting the bore kit in with the piston pumping the stock con-rod and crank would suffice.
                On the other hand for the over-square configuration of,
                RTR160: Bore/Stroke=62.0mm/52.9mm, Cylinder volume (Pi)r.sq.X h =159.6cc
                In here,just the 62mm bore kit would pump a longer stroke and so the cylinder would be shorter.
                In the above formula, Pi=3.14,r(radius)=bore/2,h(height)=stroke,sq.=signifies square(as in square root)

                Now the thing that makes me happy is that with the RTR180 kit Fiero can be easily modded.
                Next, I started feeling that such mods can also be carried on my Suzuki GS150R, which is perhaps the only 150cc remnant of the Fiero based engine.
                GS150R: Bore/Stroke=57mm/58.6mm, Cylinder volume (Pi)r.sq.X h =149.5cc
                But the problem here is that the GS150R carries a longer stroke than the RTR180 or the Fiero based stroke configuration, which means the bore kit of RTR180 would fall shorter for the stock big stroke of GS150R.

                So how can these problems be solved ????
                I mean that since your (gixxer_junkie_m) bike uses Karizma bore kit, the engine of Karizma has a very long stroke of 66.2mm, so you must be knowing how to adjust in such places.
                Firstly ,RTR 160 has a different con rod so it has a short stroke.So it's bore is fitted on longer stroke fiero.

                The difference between RTR 180/fiero/apache and RTR 160 is the length of the con rod and crank shaft.

                My bike has a fiero bore with Karizma piston kit
                Bore = 65.5
                Stroke = 57.8 (RTR 180,FIERO,APACHE,F2,FX)

                Remember physically both the cylinder sizes of the RTR160 and that of the RTR 180/FIERO/F2/FX is the same the only difference is the longer con rod of the RTR160 making the stroke to 52.5mm .
                Last edited by gixxer_junkie_m; 03-19-2011, 10:49 PM.
                Life begins, once you hit the power band !!

                Comment


                • Same cylinder size but :

                  Longer con rod and diff dia crank = shorter stroke.
                  Life begins, once you hit the power band !!

                  Comment


                  • Karizma bore kit can't be fitted on fiero/RTR or on any of it's derivatives.

                    I don't know whether the fiero based bore kits can be fitted on the gs150.It's not just a question of stroke and bores,it depends on the crank case mountings and crank shaft position.

                    Regarding the valves,yes you can put the RTR 180's intake valve .That is of 28.5mm onto your fiero head.

                    Remember to get these works done at a good lathe.
                    Life begins, once you hit the power band !!

                    Comment


                    • Originally posted by psr View Post
                      Yes that's the one..I will talk to the Chennai office people and get you the details by next week..If it is not available then i can get it here and send it to you.
                      Normally the Frequency counter starts at Rs500/- and it is digital.
                      Thanks for the offer,i'll keep that in mind.What other things would be needed and their approximate prices?Another thing,how reliable would it be in comparison to a analog display one?
                      Life begins, once you hit the power band !!

                      Comment


                      • Originally posted by Shreeni0403 View Post

                        I saw this with one mechanic in Mysore. Guess its accurate but he said he paid 5000rs 3 years back
                        I am sure Abhi will be interested in it Although it's the needle going up ,when his girl goes crazy, is the thing which gets him
                        Last edited by gixxer_junkie_m; 03-19-2011, 11:53 PM.
                        Life begins, once you hit the power band !!

                        Comment


                        • Originally posted by gixxer_junkie_m View Post
                          I don't know whether the fiero based bore kits can be fitted on the gs150.It's not just a question of stroke and bores,it depends on the crank case mountings and crank shaft position.
                          Originally posted by gixxer_junkie_m View Post

                          Longer con rod and diff dia crank = shorter stroke.
                          Hmm, nice insights.

                          So how does the longer con and crank dia of shorter stroke RTR160 varies ?? Is the crank dia bigger or smaller ???And does this implies that short stroke engines have longer conrods ??

                          And what do we need to consider while taking crank case mounting and crank shaft position in question ??? I mean to say how we can judge it ???
                          Hell's Angel
                          sigpic

                          Comment


                          • Originally posted by MACH50 View Post
                            Hmm, nice insights.

                            So how does the longer con and crank dia of shorter stroke RTR160 varies ?? Is the crank dia bigger or smaller ???And does this implies that short stroke engines have longer conrods ??

                            And what do we need to consider while taking crank case mounting and crank shaft position in question ??? I mean to say how we can judge it ???
                            I don't know the exact numbers of the con rod length and crank shaft dia of the RTR 160.

                            Since it's a short stroke(shortest stroked bike in production, in india),it has to be a combination of smaller dia crank with a longer con rod. Longer con rod with smaller dia crank = high performance and engine life.
                            The cbz classic had a stroke of just 49.5 mm and a bore of 62 mm.

                            Shorter the stroke and bigger the bore = longer engine life and better performance.

                            Since you have both the fiero and the gs150,you are in a better position to find out whether they share the same design or not.

                            To find that out measure the distances between the engine stud bolts of the both.
                            Last edited by gixxer_junkie_m; 03-20-2011, 12:59 AM.
                            Life begins, once you hit the power band !!

                            Comment


                            • Originally posted by gixxer_junkie_m View Post

                              To find that out measure the distances between the engine stud bolts of the both.
                              Got it.........but a picture of which is engine stud bolt might have helped

                              Is it the screw like things which fastens the engine head to the rest of the engine ???
                              Or is the four long poles on which the chamber is mounted ???

                              What I have seen is that on removing the engine head by unscrewing four screws, the cylinder bore can be seen.On removing the cylinder bore, four long poles are exposed and the piston mounted on the con-rod is trapped between them.The Con-rod is linked with the crankshaft below in the chamber.

                              Now I cannot connect which of these is engine stud bolt.
                              Last edited by MACH50; 03-20-2011, 12:33 AM.
                              Hell's Angel
                              sigpic

                              Comment


                              • Originally posted by MACH50 View Post
                                Got it.........but a picture of which is engine stud bolt might have helped
                                Pic courtesy of NANOTECH

                                Now, the pic shows bore kit with exposed stud bolts,they should match that of the gs150.

                                That pic is of a RTR180 Bore kit fitted on a fiero F2.

                                Then again,if that matches also ,the engine oil pipe to the head is external for the fiero derivatives ,were as it's internal for the gs150.So that modification is not possible.
                                Life begins, once you hit the power band !!

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