Since '02 xBhp is different things to different people. From a close knit national community of bikers to India's only motorcycling lifestyle magazine and a place to make like-minded biker friends. Join us

Castrol Power 1

Avoid staying around those big vehicles.

Our Partners

Announcement

Collapse
No announcement yet.

Fiero/FieroF2/FieroFx

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Originally posted by NANOtechnology View Post
    the revv limiter kicks in at 7.5k itself
    If you get the CDI circuit I will tell you how to defeat the Revlimiter.Alternatively try building your own cdi which will not have the limiter.
    When Was The Last Time,You Did Something For The First Time.

    Comment


    • Originally posted by imjoshee View Post
      Great.
      Lets meet in guys. I work at SEEPZ and we all can meet at Powai. Will be a convenient place for all. What say??



      Vishal
      sure vishal.
      its fine for me too.
      its been long i haven't met you also.

      weekdays we all can meet, let me know after deciding amongst yourself, the suitable time, as you both are office go-ers...
      i am still not in that league

      friday would be good as i believe both of you will have holiday the other day.
      how about Gloria Jean's coffee shop ??

      Originally posted by psr View Post
      If you get the CDI circuit I will tell you how to defeat the Revlimiter.Alternatively try building your own cdi which will not have the limiter.
      if i can alter my own cdi it will be good as i don't want to spend any more money now.
      will it cause any problems ?
      i am actually happy with this current setup itself, but it just feels that a lot of throttle play is going waste..

      imagine the console showing the green light of economy mode and the bike is doing 105
      power mode is still long way to go..
      Giving a lot to a fiero.
      Expecting a lot from a fiero.

      Comment


      • Originally posted by NANOtechnology View Post



        if i can alter my own cdi it will be good as i don't want to spend any more money now.
        will it cause any problems ?
        i am actually happy with this current setup itself, but it just feels that a lot of throttle play is going waste..

        imagine the console showing the green light of economy mode and the bike is doing 105
        power mode is still long way to go..

        Your bike and all fiero models till apache150 have rev-limiter and it cuts in at 9500 rpm.If you are not hitting the rev-limiter at 9500k ,then i think it must be something else which is stopping the revs at 7.5k.

        @ALL

        As i have said before no need for RTR's ignition if you folks put a 180 bore kit.Even if you short shift in gears in order to not to hit the rev-limiter,then also you can easily cross 115 kmph in 4th gear.If you make the gearing taller like i did ,by putting a 14 teeth gb sprocket or more then you can easily cross 120 kmph on regular basis.Within city limits you wont be hitting the rev-limiter at all. It's just that i prefer going full throttle in all the gears once i see open roads,hence i kept on bouncing off the rev-limiter in the first 3 gears.
        Last edited by gixxer_junkie_m; 11-03-2010, 03:37 PM.
        Life begins, once you hit the power band !!

        Comment


        • Originally posted by bprags View Post

          gixxer: - we should meet again.

          ps:- couple of days back gave a p200 a nice shock
          Originally posted by bprags View Post
          gixxer: - what were the speeds achieved in each gear?
          u have 14 teeth front sprocket right?
          The speeds were ridiculous man!! i short shifted in first gear as i knew that the first gear is short and that i will be hitting the rev-limiter,then i stayed in second and the speedo indicated 60 when ,like a bit over half throttle then the rev-limiter bounced it then momentarily it went to 65 kmph and then returned back to 60 ,then on the next run i short shifted in both first and second gear and stayed in third gear and it was 90+ in third gear when rev-limiter came into play.There wasn't enough free road to explore the 4TH gear
          Life begins, once you hit the power band !!

          Comment


          • Originally posted by velociraptor13 View Post
            Is it possible to install the rtr cdi unit in the fiero,as i have heard the rtr doesn't have a rev limiter?
            Is it possible to swap out the fieros gearbox unit to that of the rtr's tranny? I guess most of the problems you guys are facing should get ironed out?
            That's what has been done to all the bikes which have been modified.The bikes of bprags and mash have RTR's TCI units and the reason is because it doesn't have rev-limiter.A 5th cog can be added to the fiero's box ,but if you don't mind a bit of drop in acceleration then the easier and cheaper way is to make the gearing taller and you will scare yourself with the speeds which a modified fiero can reach
            Life begins, once you hit the power band !!

            Comment


            • @ALL

              For putting a RTR's TCI/IDI unit on our fieros ,all you would need is the TCI unit and the ignition coil and another thing there's no need to buy the wiring of the RTR.

              The cost :-

              TCI unit= 650 Rs .

              Ignition coil = 450 Rs.

              If in case ,your bike's CDI unit is stolen or is not working properly,then the better alternative is to go for the RTR's TCI unit as it will be cheaper than a CDI unit which costs 3,750 Rs.
              Life begins, once you hit the power band !!

              Comment


              • Originally posted by gixxer_junkie_m View Post
                @ALL

                For putting a RTR's TCI/IDI unit on our fieros ,all you would need is the TCI unit and the ignition coil and another thing there's no need to buy the wiring of the RTR.

                The cost :-

                TCI unit= 650 Rs .

                Ignition coil = 450 Rs.

                If in case ,your bike's CDI unit is stolen or is not working properly,then the better alternative is to go for the RTR's TCI unit as it will be cheaper than a CDI unit which costs 3,750 Rs.
                So you are innovating again....and your mods are pocket friendly.....Good Luck to your mods and keep us posted on your explorations with your Fiero.
                Last edited by psr; 11-03-2010, 05:41 PM.
                When Was The Last Time,You Did Something For The First Time.

                Comment


                • Originally posted by psr View Post
                  So you are innovating again....and your mods are pocket friendly.....Good Luck to your mods and keep us posted on your explorations with your Fiero.
                  Thanks for advising me on the benefits of a IDI unit over a CDI,your personal experience with your car that is and i will ask you about the coil needs of the modification.The bike is still a work-in-progress ,so lets see how things turn out.
                  Life begins, once you hit the power band !!

                  Comment


                  • Originally posted by gixxer_junkie_m View Post
                    Thanks for advising me on the benefits of a IDI unit over a CDI,your personal experience with your car that is and i will ask you about the coil needs of the modification.The bike is still a work-in-progress ,so lets see how things turn out.
                    The IDI has a long duration Spark compared to CDI which is short.The long duration helps in the full burning of the AF mix,and hence better power and efficiency.The down side is Engines with a very high RPM will get into problem because of the longer duration spark, because the next spark event will overlap on to it.However by correctly designing the spark duration,this problem is overcome and RTRs have very free and high revving engine. Since the RTR is a single cylinder 4 stroker there is ample time between one spark event to the next event(3 strokes in between)and no problem can arise out of this long duration spark.
                    Last edited by psr; 11-03-2010, 11:54 PM.
                    When Was The Last Time,You Did Something For The First Time.

                    Comment


                    • i cannot change my cdi to that of the RTR's as my stator is different and other fiero's, rtr, apache 150, all have a similar stator.

                      f2 and fx has a distinct stator as well as completely different cdi/tci unit.

                      i don't wish to change the cdi/tci, if i can mod it in some way to cut off the revv limiter, then i might go for it, not otherwise.

                      i am not facing any problems, and i have never ever seen the bike revving over 8k until now even from day 1.
                      the tacho and the speedo needles work almost parallel in 4th gear, but tacho needle covers lesser distance than the speedo needle.

                      if you look at the console..





                      the bike does a bit over a 100 at exactly 7.5k (not touching the red line) with stock engine.

                      now it goes till 120 on the speedo at 7.5k but it comes down to 105 to 110 and revvs remain there.

                      it just seems that the bike is doing great speeds at a bit more than 1/2 of the throttle, and the remaining throttle play seems to go waste because of the revv limiter.

                      and are you guys completely sure that the rtr series of bikes do not have revv limiter ?
                      even r15 comes with a revv limiter, then why not rtr ??
                      is it legal to have bikes without revv limiter, if that is the case then RTR should touch ~145 kmph on the speedo at 13k rpm !!!

                      if a fiero can touch 100 at 7.5k with a 150cc bike, a 180 rtr WITHOUT THE REVV LIMITER should touch 13k, so imagine the speeds !!!

                      i don't feel any bike comes without revv limiter and is legal. however i could be wrong.....
                      enlighten me.....
                      Giving a lot to a fiero.
                      Expecting a lot from a fiero.

                      Comment


                      • Originally posted by gixxer_junkie_m View Post
                        Your bike and all fiero models till apache150 have rev-limiter and it cuts in at 9500 rpm.If you are not hitting the rev-limiter at 9500k ,then i think it must be something else which is stopping the revs at 7.5k.

                        let me ask something.

                        classic fiero produces 12 bhp at 7500 rpm
                        fiero f2 / fx produces 12 bhp at 7000 rpm
                        apache 150 produces 13.5 bhp at 8500 rpm
                        apache rtr 160 produces 15.2 bhp at 8500 rpm
                        apache rtr 160 fi produces 15.78 bhp at 8500 rpm
                        apache rtr 180 produces 17.03 bhp at 8500 rpm

                        so if we consider all of these bikes, fiero F2 (the one i own) is the LEAST revving bike out there compared to all the tvs models so far.
                        so why have the revv limiter working at 9000k for all these models ??
                        can my revv limiter not work at 7.5k ??


                        now if we all have a revv limiter and rtr guys don't have so, then why does it not reach 13k or 14k on the tacho ??
                        if it does so, then how come it not reach such speeds ??

                        imagine if in case the engine is churning out 15 bhp at 8.5k, and it has an ability to revv till 12k, does it not produce more speed with more number of revvs ??

                        i can bet that today if my bike doesn't have a revv limiter, it would definitely touch 140+ on the speedo as i feel the bike can do a lot lot more than what its doing at 7.5k.

                        if i feel it, then why doesn't apache 180 do it ??
                        Giving a lot to a fiero.
                        Expecting a lot from a fiero.

                        Comment


                        • My ten cents

                          Just a thought crossed my mind,i have a unicorn.Right now i am running on the bs 29 carb(from the pulsar 200) upjetted to 115(stock was 110).But i had issues connecting the throttle positioning sensor(dont know if i am right,the sensor or pickup that is connected to the throttle valve of the cv carb).Assuming the unicorn cuts of at 8000rpm(dont know if its right,need to be verified),the other day while going to nashik,my bike crossed 8000rpm without the rev limiter cutting in).Dont know if the theory is right,just my ten cents
                          Socha Toh Locha.

                          Comment


                          • @nano:- Just because a engine revvs beyond its peak power doesnt mean it will make power at those revvs, RTR 160 revvs till 12K revvs, upto 8.5K revvs the bike will keep making power [read accelrating], but beyond 8.5K revvs the engine does not make much torque or power to push the bike to those crazy speeds but if you still keep revving for fun the bike looses accelration, to keep accelerating shift gears just beyond the peak rpm i:e 8.5K + 500 revvs.

                            The engine will make its best power at the figures given by the company, in case of F2 its 7K rpm.

                            I am not a technical guy, @gixxer you are best doing it

                            Comment


                            • Originally posted by bprags View Post
                              @nano:- Just because a engine revvs beyond its peak power doesnt mean it will make power at those revvs, RTR 160 revvs till 12K revvs, upto 8.5K revvs the bike will keep making power [read accelrating], but beyond 8.5K revvs the engine does not make much torque or power to push the bike to those crazy speeds but if you still keep revving for fun the bike looses accelration, to keep accelerating shift gears just beyond the peak rpm i:e 8.5K + 500 revvs.

                              The engine will make its best power at the figures given by the company, in case of F2 its 7K rpm.

                              I am not a technical guy, @gixxer you are best doing it
                              Yes you are right.Every engine has a peak RPM and Peak torque at specified RPM.The peak Torque will always be at a RPM lower than Peak RPM. The power can be produced only till the Torque RPM and beyond this Irrespective of the RPM the engine NO LONGER PRODUCES USEFUL POWER.
                              The red markings on the RPM meter shows RPMs which are no longer safe to ride in.
                              When Was The Last Time,You Did Something For The First Time.

                              Comment


                              • Originally posted by NANOtechnology View Post
                                i can bet that today if my bike doesn't have a revv limiter, it would definitely touch 140+ on the speedo as i feel the bike can do a lot lot more than what its doing at 7.5k.
                                If only it were that easy man ....read up on power and torque, these are very basic things
                                Last edited by Killer; 11-05-2010, 10:59 AM.
                                http://www.facebook.com/sameer.venugopalan
                                www.youtube.com/killer

                                Comment

                                Working...
                                X