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Apache RTR/FI

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  • #1156
    44 to 37 ? now dont say that initial pick up reduced a bit only


    one problem here also, i heard a little "phat phat" sound from the silencer today....what can it be ???
    Last edited by psycho28; 02-07-2009, 08:30 PM.
    http://www.throughmysenses.com/

    Comment

    • #1157
      Originally posted by psycho28 View Post
      44 to 37 ? now dont say that initial pick up reduced a bit only


      one problem here also, i heard a little "phat phat" sound from the silencer today....what can it be ???
      Yes a bit only.... 0-60 in 6.4 seconds.... originally it used to do that in 5 secs .... but i did notice that to reach top speed in 5th, it takes some time... the bike now cruises around 70-80 kmph at 5000 rpm... very smooth.....

      Comment

      • #1158
        So im all set for my first long ride tomorrow ..going to nandi hills and back..i wanna see how the bike will perform with the new oil..

        Comment

        • #1159
          Originally posted by ravs View Post
          Hi Guys, just got my 2 month old (4000kms approx) yellow RTR refresh modified today. Got the rear sprocket changed from the stock 44T to a 37T (RXG'S). No other parts changed, just the rear sprocket. Got it for Rs.120. Fitting at Rs. 30 extra. The first thing I noticed is that there is a very slight drop in initial pickup, though the gearing has become a lot taller. I am now able to go to speeds at 1000rpm lesser than the stock. So, i am now able to go at 60 kmph at 4000 rpm instead of 5000 rpm approx. The ride has become a lot smoother and I am experiencing virtually no vibrations at all. The top speed has come down to about 112 but i dont care about that since i normally cruise around 80-90 kmph. In city, I am hardly able to put the bike into 5th gear, since i get to 70 kmph in the 4th gear itself with the engine going at 4500 rpms. Can't tell anything about the mileage yet, but it will definitely have decreased from the 50kmpl that it was giving me.
          The only concern is that i have no idea what effect this change will have on the engine and clutch. Tried asking my mechanic, but didnt get any satisfactory response from him. Got any ideas?
          37T?

          man u should have a smooth ride in highway and get a good fuel eff in highways too! but this seems to be a overkill.......am damn sure u'll change the sprocket in couple of days

          Anyways pls keep us posted abt the performance!


          @apar

          The fuel leak in FI seems to be a common issue........there are quiet a lot of bike with same kind of issue here in hyd!

          There is 1 case where the poor guy lost all the petrol in his tank(abt16ltrs) within 160kms. Guys here dont have the stock of that O-ring seal. They are trying to manage it with other things for now but nothing is working....and the bike has done only 200kms till now

          Hope TVS looks into this very soon!
          07 HH Zma
          11 Honda Aviator DLX
          14 Ford Figo 1.4 TDCI (Now Caged:( )
          16 Scooty Zest
          11 CBR 250R

          Comment

          • #1160
            Originally posted by ravs View Post
            Yes a bit only.... 0-60 in 6.4 seconds.... originally it used to do that in 5 secs .... but i did notice that to reach top speed in 5th, it takes some time... the bike now cruises around 70-80 kmph at 5000 rpm... very smooth.....
            sure you will have a smooth drive because of low rpm, i was thinking about 43(as joel suggested)............tell about your expirence more, then i will think again
            http://www.throughmysenses.com/

            Comment

            • #1161
              Originally posted by ravs View Post
              Hi Guys, just got my 2 month old (4000kms approx) yellow RTR refresh modified today. Got the rear sprocket changed from the stock 44T to a 37T (RXG'S). No other parts changed, just the rear sprocket. Got it for Rs.120. Fitting at Rs. 30 extra. The first thing I noticed is that there is a very slight drop in initial pickup, though the gearing has become a lot taller. I am now able to go to speeds at 1000rpm lesser than the stock. So, i am now able to go at 60 kmph at 4000 rpm instead of 5000 rpm approx. The ride has become a lot smoother and I am experiencing virtually no vibrations at all. The top speed has come down to about 112 but i dont care about that since i normally cruise around 80-90 kmph. In city, I am hardly able to put the bike into 5th gear, since i get to 70 kmph in the 4th gear itself with the engine going at 4500 rpms. Can't tell anything about the mileage yet, but it will definitely have decreased from the 50kmpl that it was giving me.
              The only concern is that i have no idea what effect this change will have on the engine and clutch. Tried asking my mechanic, but didnt get any satisfactory response from him. Got any ideas?

              37 is too low... This is increase the engine back pressure and life of your bore will decrease exponentially. Once I have tried similar conversation on My RX by dropping tooths by 5. Man I lost my bore in one trip.

              Was it a retro fit?
              M.R.B
              Bajaj 150 - '71 | Yamaha RX135 '98 | Apache FG '06

              Comment

              • #1162
                Originally posted by onlinesatish View Post
                @apar

                The fuel leak in FI seems to be a common issue........there are quiet a lot of bike with same kind of issue here in hyd!

                There is 1 case where the poor guy lost all the petrol in his tank(abt16ltrs) within 160kms. Guys here dont have the stock of that O-ring seal. They are trying to manage it with other things for now but nothing is working....and the bike has done only 200kms till now

                Hope TVS looks into this very soon!
                Thats exactly similar to my case. I too faced this problem in around 150 kms or so. Today, I and Sai went to the TVS office at Mandaveli and met Mr. Velmurugan personally. A good guy who is ready to help us out. Sai's bike is still not right. After riding my bike, I tried to ride his bike and felt it wierd. It felt as if it was running terribly lean. Velmurugan tried it out but the engine had cooled and he cud not spot it during his test ride. No issues in mine. We discussed a lot of things. He was actually surprised that we know about most common problems in the RTR and even the most uncommmonest of problems.

                BTW I checked for the sprocket. The Apache 43T is available, but only as a kit from ROLON or TVS original. TVS Original costs 900 bucks at the showroom while the ROLON costs 750 bucks. Am still searchjing. I want to change it before 1K kms to avoid all this mis-alignment and stuff. Beyond that the chain and sprocket might set. Let me see what can be done!
                Democracy is when 2 wolves and a sheep meet to decide who is for dinner. Liberty is when the sheep has a gun.

                Comment

                • #1163
                  Originally posted by M.R.B View Post
                  37 is too low... This is increase the engine back pressure and life of your bore will decrease exponentially. Once I have tried similar conversation on My RX by dropping tooths by 5. Man I lost my bore in one trip.

                  Was it a retro fit?
                  I think i'll change back to the stock sprocket tomorrow in that case.... I don't want to harm my baby.... but i'll sure as hell miss the non-vibration feeling it now gives....... thanks for the info ......

                  Comment

                  • #1164
                    Hey guys I booked a RTR Refresh black and will be getting it on Thursday... I wanted to know if I can change my stock tyres to tubeless tyres... I've heard lot of praise about the R15s front so might try that.I wanted to know if tubeless tyres will fit on the stock rim with no problems at all. Also I wanted suggestions for the rear tyre, 18" tubeless preferably, something which is 110 or 120...

                    One more thing I noticed was the rear footpegs of the earlier RTR (atleast on the brochures and all) are metal ones whereas the new rtr has regular rubber ones...

                    One last question, Does the Refresh also have the Lap timer ?

                    For all you Hip Hop Fans out there, check out our tracks at

                    Comment

                    • #1165
                      Sprocket math

                      Originally posted by ravs View Post
                      I think i'll change back to the stock sprocket tomorrow in that case.... I don't want to harm my baby.... but i'll sure as hell miss the non-vibration feeling it now gives....... thanks for the info ......
                      Some more information:

                      SPROCKET MATH
                      There are only two basic equations for sprocket math: calculating the sprocket drive ratio and calculating the percentage change in sprocket ratios.

                      SPROCKET MATH

                      There are only two basic equations for sprocket math: calculating the sprocket drive ratio and calculating the percentage change in sprocket ratios.


                      Calculating the sprocket drive ratio:

                      (Rear tooth count) / (front tooth count) = drive ratio

                      Example 1:
                      Bike ships stock with 47 tooth rear sprocket, 15 tooth front sprocket.
                      47 / 15 = 3.13333
                      So 3.13333 is the stock sprocket ratio.

                      Example 2:
                      You buy a 50 tooth rear sprocket and a 15 tooth front sprocket for the above bike.
                      50 / 15 = 3.33333
                      So 3.33333 is the new sprocket ratio.


                      Calculating the percentage change in sprocket ratios:

                      ((new ratio / old Ratio) - 1) * 100 = change as a percentage.
                      NOTE: Positive percentages indicate higher gearing ratios, negative numbers mean lower gearing ratios

                      Example (using the numbers from the first set of equations):
                      Motorcycle had a 3.1333 sprocket ratio,
                      cycle will now have a 3.3333 sprocket ratio

                      ((3.3333 / 3.1333) - 1) * 100) =
                      ((1.0638) - 1) * 100) =
                      (.0638) * 100) = 6.38% change


                      Combining the equations (if you'd want to for some reason):

                      (( (NewRear/NewFront) / (OldRear/OldFront) ) - 1) * 100 = % change.

                      Example (using the same numbers as from the sprocket drive ratio examples):
                      (( (50 / 15) / (47 / 15) ) - 1) * 100 =
                      (( 3.3333 / 3.1333 ) - 1 ) * 100 =
                      (1.0638 - 1) * 100 =
                      (0.0638) * 100 = 6.38
                      Thus, changing from 47 to 50 tooth rear with a 15 tooth front is a 6.38% change.
                      M.R.B
                      Bajaj 150 - '71 | Yamaha RX135 '98 | Apache FG '06

                      Comment

                      • #1166
                        Originally posted by M.R.B View Post
                        Some more information:

                        SPROCKET MATH
                        There are only two basic equations for sprocket math: calculating the sprocket drive ratio and calculating the percentage change in sprocket ratios.

                        SPROCKET MATH

                        There are only two basic equations for sprocket math: calculating the sprocket drive ratio and calculating the percentage change in sprocket ratios.


                        Calculating the sprocket drive ratio:

                        (Rear tooth count) / (front tooth count) = drive ratio

                        Example 1:
                        Bike ships stock with 47 tooth rear sprocket, 15 tooth front sprocket.
                        47 / 15 = 3.13333
                        So 3.13333 is the stock sprocket ratio.

                        Example 2:
                        You buy a 50 tooth rear sprocket and a 15 tooth front sprocket for the above bike.
                        50 / 15 = 3.33333
                        So 3.33333 is the new sprocket ratio.


                        Calculating the percentage change in sprocket ratios:

                        ((new ratio / old Ratio) - 1) * 100 = change as a percentage.
                        NOTE: Positive percentages indicate higher gearing ratios, negative numbers mean lower gearing ratios

                        Example (using the numbers from the first set of equations):
                        Motorcycle had a 3.1333 sprocket ratio,
                        cycle will now have a 3.3333 sprocket ratio

                        ((3.3333 / 3.1333) - 1) * 100) =
                        ((1.0638) - 1) * 100) =
                        (.0638) * 100) = 6.38% change


                        Combining the equations (if you'd want to for some reason):

                        (( (NewRear/NewFront) / (OldRear/OldFront) ) - 1) * 100 = % change.

                        Example (using the same numbers as from the sprocket drive ratio examples):
                        (( (50 / 15) / (47 / 15) ) - 1) * 100 =
                        (( 3.3333 / 3.1333 ) - 1 ) * 100 =
                        (1.0638 - 1) * 100 =
                        (0.0638) * 100 = 6.38
                        Thus, changing from 47 to 50 tooth rear with a 15 tooth front is a 6.38% change.

                        WWWWWWWOOOOOWWWWW
                        can u be my mathametices tutor!!!!
                        u r gr8 in it!!!
                        any way nice info!

                        Comment

                        • #1167
                          Originally posted by mzone View Post
                          Hey guys I booked a RTR Refresh black and will be getting it on Thursday... I wanted to know if I can change my stock tyres to tubeless tyres... I've heard lot of praise about the R15s front so might try that.I wanted to know if tubeless tyres will fit on the stock rim with no problems at all. Also I wanted suggestions for the rear tyre, 18" tubeless preferably, something which is 110 or 120...

                          One more thing I noticed was the rear footpegs of the earlier RTR (atleast on the brochures and all) are metal ones whereas the new rtr has regular rubber ones...

                          One last question, Does the Refresh also have the Lap timer ?
                          no idea about the tyres ..
                          well dude .. the alloy foot pegs are under the rubber thing .. remove the rubber by unscrewing the nuts and vola !!!!!
                          i guess it has a lap time ..
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                          Comment

                          • #1168
                            Originally posted by ravs View Post
                            Yes a bit only.... 0-60 in 6.4 seconds.... originally it used to do that in 5 secs .... but i did notice that to reach top speed in 5th, it takes some time... the bike now cruises around 70-80 kmph at 5000 rpm... very smooth.....
                            From 44 to 37 is something that I'll think twice to gear on my 21-22bhp 200cc Fiero as well. Let alone a stock RTR160. It will kill all your performance gains. Like I said earlier, going 1 or 2T max is the best bet.
                            On my modified RTR which pumps nearly 3.5bhp more, I was running a 41T and I felt it was a little taller. Switched to a custom made 42T and it was just fine. So just figure out what you need then.
                            sigpic
                            [email protected]

                            Comment

                            • #1169
                              Well, the stock sprocket is back in its place.... and it made me fall in love with the bike all over again !!!!!!!!
                              The 37T did give more speed in each gear, but the grunt of the engine which I fell in love with in the first place was gone..... the bike behaved more like a city bike rather than a racer that it is meant to be .... I had started feeling as though I was riding a unicorn or something..... and I hate the kind of ride those bikes have.... the Apache's ride is a league apart...... ripping the bike is now more fun again..... and the awesome power that makes you feel as though the bike will just slip out from between your legs when you rip it, is back..... I think I love the Apache the way it is: Stock.

                              Comment

                              • #1170
                                i want to convert my 2 small parking light in front from Alternator current to direct Battery current . It should be like that when i ON the bike and engine aint running but the parking light switch is on they should light up . is it a easy job ??? will the TVS service people do it?? how much will it cost ?? what is a rectifier thats needed to be put to convert ac to dc

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