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Suzuki Inazuma GW250 India Launch in January 2014: xBhp News

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  • #76
    Re: Suzuki Inazuma GW250 India Launch in January 2014: xBhp News

    Originally posted by Ri$hi View Post
    Could someone throw some light about the crankshaft angle on this bike? I mean do both the pistons reach the TDC and BDC at the same time or alternatively?
    Its a DOHC, right? So, the pistons should traditionally take alternative TDC and BDC positions.
    Got a $5 head? Get a $5 helmet.
    Because everyone who passes, isn't a martyr!

    Bullet Service Guide CBR 250R Parts Manual Fz16 service manual - https://drive.google.com/file/d/0B1-...VFQmJzakk/view
    Hero Moto Corp Bikes' Parts RE STD 350 Wiring Diagram (CI) Service Manual - Classic 350/500
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    • #77
      Re: Suzuki Inazuma GW250 India Launch in January 2014: xBhp News

      Originally posted by Divya Sharan View Post
      Its a DOHC, right? So, the pistons should traditionally take alternative TDC and BDC positions.
      Isn't that supposed to be the correct way? If both pistons take TDC/BDC position simultaneously, there would be significantly higher vibes felt by the rider,
      Biking is not about how many Km/h you put on your Speedo. It's about how many miles you put on your Odo. Ride Safe, Ride Long!

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      • #78
        Re: Suzuki Inazuma GW250 India Launch in January 2014: xBhp News

        Originally posted by bbsrailfan View Post
        Isn't that supposed to be the correct way? If both pistons take TDC/BDC position simultaneously, there would be significantly higher vibes felt by the rider,
        That's what I'm saying! I guess it should be this (traditional) way only. Yamaha's cross-plane crankshaft has actually created more confusion than anything else.
        We all expect something radical from all multi cyl. engines now. He he.
        Got a $5 head? Get a $5 helmet.
        Because everyone who passes, isn't a martyr!

        Bullet Service Guide CBR 250R Parts Manual Fz16 service manual - https://drive.google.com/file/d/0B1-...VFQmJzakk/view
        Hero Moto Corp Bikes' Parts RE STD 350 Wiring Diagram (CI) Service Manual - Classic 350/500
        ZMR parts - https://drive.google.com/file/d/0B-U...it?usp=sharing
        P200NS Spares' prices - https://docs.google.com/spreadsheet/...taGd5R2c#gid=0

        Comment

        • #79
          Re: Suzuki Inazuma GW250 India Launch in January 2014: xBhp News

          [MENTION=49917]bbsrailfan[/MENTION]
          In a V twin, pistons take almost simultaneous tdc/bdc I guess (not sure if all v-twins work like this). Obviously, the cycles will be different.
          The best things in life are dangerous: Motorcycles and Women

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          • #80
            Re: Suzuki Inazuma GW250 India Launch in January 2014: xBhp News

            Originally posted by raging_bull View Post
            @bbsrailfan
            In a V twin, pistons take almost simultaneous tdc/bdc I guess (not sure if all v-twins work like this). Obviously, the cycles will be different.
            This is a parallel twin bro. But, I still don't understand how can both pistons have simultaneous TDC/BDC operation!
            Kindly explain.
            Got a $5 head? Get a $5 helmet.
            Because everyone who passes, isn't a martyr!

            Bullet Service Guide CBR 250R Parts Manual Fz16 service manual - https://drive.google.com/file/d/0B1-...VFQmJzakk/view
            Hero Moto Corp Bikes' Parts RE STD 350 Wiring Diagram (CI) Service Manual - Classic 350/500
            ZMR parts - https://drive.google.com/file/d/0B-U...it?usp=sharing
            P200NS Spares' prices - https://docs.google.com/spreadsheet/...taGd5R2c#gid=0

            Comment

            • #81
              Re: Suzuki Inazuma GW250 India Launch in January 2014: xBhp News

              Originally posted by Divya Sharan View Post
              This is a parallel twin bro. But, I still don't understand how can both pistons have simultaneous TDC/BDC operation!
              Kindly explain.
              There are bikes with 360 degree crankshaft where both the pistons reach TDC and BTC at the same time. Honda CD200 roadmaster is one among them, the daddy of our very own HH cd100. There are also 270 degree crackshaft parallel twin four stroke bikes from the Triumph stables. What has SOHC/DOHC got to do with the pistons reaching the TDC at the same time or alternatively. Please share Your knowledge.

              PS: suzuki gw250 is SOHC and not DOHC.

              source: Suzuki Inazuma GW250 Review and Specifications : GW250Inazuma.com, The GW250 & GSR250 Inazuma Specialty Shop

              Comment

              • #82
                Re: Suzuki Inazuma GW250 India Launch in January 2014: xBhp News

                Originally posted by Divya Sharan View Post
                This is a parallel twin bro. But, I still don't understand how can both pistons have simultaneous TDC/BDC operation!
                Kindly explain.
                I will hopefully be able to clear your concern . In simple terms, TDC is the highest position that a piston can reach and BDC is the lowest position. Both pistons move upwards and downwards but they're in different cycles. I mean when going upwards, one piston will be in the compression cycle and the other will be in exhaust cycle. Clear? (assuming that this was your concern).

                In inline 2 engines pistons take tdc/bdc simultaneously, if what I read is correct. And I think the pistons are in the same cycle too.

                My knowledge about single and twin cylinder engines is VERY limited. Experts please correct me if there are any mistakes.
                Last edited by raging_bull; 12-20-2013, 03:36 PM.
                The best things in life are dangerous: Motorcycles and Women

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                • #83
                  Re: Suzuki Inazuma GW250 India Launch in January 2014: xBhp News

                  Originally posted by raging_bull View Post
                  I will hopefully be able to clear your concern . In simple terms, TDC is the highest position that a piston can reach and BDC is the lowest position. Both pistons move upwards and downwards but they're in different cycles. I mean when going upwards, one piston will be in the compression cycle and the other will be in exhaust cycle. Clear? (assuming that this was your concern)

                  In inline 2 engines too pistons take tdc/bdc simultaneously, if what I read is correct. And I think the pistons are in the same cycle too.

                  My knowledge about single and twin cylinder engines is VERY limited. Experts please correct me if there are any mistakes.
                  Hmm, that explains it. Lets see what the actual cycles are. Suzuki would've documented it.

                  Originally posted by Ri$hi View Post
                  There are bikes with 360 degree crankshaft where both the pistons reach TDC and BTC at the same time. Honda CD200 roadmaster is one among them, the daddy of our very own HH cd100. There are also 270 degree crackshaft parallel twin four stroke bikes from the Triumph stables. What has SOHC/DOHC got to do with the pistons reaching the TDC at the same time or alternatively. Please share Your knowledge.

                  PS: suzuki gw250 is SOHC and not DOHC.

                  source: Suzuki Inazuma GW250 Review and Specifications : GW250Inazuma.com, The GW250 & GSR250 Inazuma Specialty Shop
                  Sorry. Yes its SOHC.

                  I got this from wikipedia which was the source of my post - A double overhead camshaft (DOHC) valvetrain layout (also known as 'dual overhead camshaft') is characterised by two camshafts located within the cylinder head, one operating the intake valves and one operating the exhaust valves.
                  Got a $5 head? Get a $5 helmet.
                  Because everyone who passes, isn't a martyr!

                  Bullet Service Guide CBR 250R Parts Manual Fz16 service manual - https://drive.google.com/file/d/0B1-...VFQmJzakk/view
                  Hero Moto Corp Bikes' Parts RE STD 350 Wiring Diagram (CI) Service Manual - Classic 350/500
                  ZMR parts - https://drive.google.com/file/d/0B-U...it?usp=sharing
                  P200NS Spares' prices - https://docs.google.com/spreadsheet/...taGd5R2c#gid=0

                  Comment

                  • #84
                    Re: Suzuki Inazuma GW250 India Launch in January 2014: xBhp News

                    Generally a twin parallal cylinder configuration uses 3 types of firing angle.

                    360 degrees: both pistons rise and fall at the same time. This configuration simplifies ignition and fuling systems but is prone to viberations. Old british twins are a good example of this. This set up generally employs a balancer shaft to counter vibes. On carburated engines this was used as a cost saving measure as both cylinders can be fed through a single carb and both cylinder can share the same timing mecanism.

                    180 degrees: pistons rise and falls alternatively. Separate fuling and more complex ignition required due to alternate firing order. Revs faster than a 360 degree set up. Thus produces more power. However requires separate fuling for both cylinders as well as separate timing mecanisms.

                    270 degrees: emulates a v twin firing order and vibes a lot. Sounds and feels like v twin as well.

                    Dohc can work with any type of firing order.

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                    • #85
                      Re: Suzuki Inazuma GW250 India Launch in January 2014: xBhp News

                      Originally posted by Ri$hi View Post
                      Honda CD200 roadmaster is one among them, the daddy of our very own HH cd100.
                      OT:- the cd 200 roadmaster shares very little with the hh cd100 apart from some design ques and may be brakes.

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                      • #86
                        Re: Suzuki Inazuma GW250 India Launch in January 2014: xBhp News

                        Originally posted by Bibhu View Post
                        OT:- the cd 200 roadmaster shares very little with the hh cd100 apart from some design ques and may be brakes.

                        Sent from my GT-I9001 using xBhp Connect mobile app
                        OT-- Yup the roadmaster was a twin I presume so even if the individual cylinder cc may look same but they are entirely different in respect to other functionality of the engine

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                        • #87
                          Re: Suzuki Inazuma GW250 India Launch in January 2014: xBhp News

                          some spy shots of inazuma with gurgaon registered number plate...

                          Click image for larger version Name: suzuki-inazuma-gw250-india-pics-1.jpg Views: 1 Size: 68.3 KB ID: 1867905


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                          Look at the position of saree guard. Isn't is strange...???. They have placed it below silencer i guess just to complete the formality.
                          Click image for larger version Name: suzuki-inazuma-gw250-india-pics-3.jpg Views: 1 Size: 69.5 KB ID: 1867907



                          Click image for larger version Name: suzuki-inazuma-gw250-india-pics-4.jpg Views: 1 Size: 62.2 KB ID: 1867908
                          sigpic
                          A good long ride can clear your mind, restore your faith and use up a lot of fuel....

                          http://www.xbhp.com/talkies/tourer/2...tml#post963629

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                          • #88
                            Re: Suzuki Inazuma GW250 India Launch in January 2014: xBhp News

                            Originally posted by Ri$hi View Post
                            There are bikes with 360 degree crankshaft where both the pistons reach TDC and BTC at the same time.
                            Originally posted by raging_bull View Post
                            In inline 2 engines pistons take tdc/bdc simultaneously, if what I read is correct. And I think the pistons are in the same cycle too
                            Originally posted by Bibhu View Post
                            Generally a twin parallal cylinder configuration uses 3 types of firing angle.
                            Ok, super. That confuses me further.

                            So doesn't an inline twin work as the below image suggests?

                            Biking is not about how many Km/h you put on your Speedo. It's about how many miles you put on your Odo. Ride Safe, Ride Long!

                            Comment

                            • #89
                              Re: Suzuki Inazuma GW250 India Launch in January 2014: xBhp News

                              [MENTION=49917]bbsrailfan[/MENTION]
                              That's an opposed piston engine I guess. No cylinder head.
                              And two pistons in a cylinder!
                              Last edited by raging_bull; 12-20-2013, 09:24 PM.
                              The best things in life are dangerous: Motorcycles and Women

                              Comment

                              • #90
                                Re: Suzuki Inazuma GW250 India Launch in January 2014: xBhp News

                                Every time I look at Inazuma, my focus goes straight on its seat. I think it will offer a very comfortable ride and that is why it will attract comfort hungry persons. Just have a look at its seat, seat's shape and cushioning etc


                                Click image for larger version Name: suzuki-inazuma-250-spotted.jpg Views: 1 Size: 71.8 KB ID: 1867912
                                sigpic
                                A good long ride can clear your mind, restore your faith and use up a lot of fuel....

                                http://www.xbhp.com/talkies/tourer/2...tml#post963629

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