Author [NL] [FR] [ES] [DE] [SE] [IT] Topic: After market exhaust V stock one  (Read 5367 times)

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  • Offline Wilko   gb

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    Offline Wilko

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    After market exhaust V stock one
    on: Nov 12, 2017, 10.20 pm
    Nov 12, 2017, 10.20 pm
    How heavy is the stock exhaust, or in other words how much weight would I save.

    On my last bike, Honda CBF 1000, I fitted a carbon fibre Fuel exhaust, great sound, but not sure it was that much lighter to be honest, but it did look the part.

    Who has what fitted in the exhaust department, and has it made a difference, and do you have to have the ecu calibrated.

    Ta

    Wilko.  :001:
    Paul Wilko

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    Offline jid

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    Re: After market exhaust V stock one
    Reply #1 on: Nov 13, 2017, 01.03 am
    Nov 13, 2017, 01.03 am
    I put a trident slip on on the bike this past Friday.  Probably saved 15-20lbs. Stock exhaust is heavy.   Trident might weigh 4 lbs.  I love the look and the sound.

    A gallon of fuel weighs 8 lbs  so while I would love to use the weight savings argument, it doesnít really compute. I do prefer the sound and I swear the bike -feels- lighter!   :)

     No computer reprogram required!!!

  • Offline nervouswreck   us

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    Offline nervouswreck

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    Re: After market exhaust V stock one
    Reply #2 on: Nov 13, 2017, 11.40 am
    Nov 13, 2017, 11.40 am
    I am curious as to why the stock exhaust weighs in at so much.  Is it because it helps balance or offset the weight of the driveline on the opposite side?  Or what, anyone have a clue?

  • Offline brenchley   us

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    Re: After market exhaust V stock one
    Reply #3 on: Nov 13, 2017, 12.40 pm
    Nov 13, 2017, 12.40 pm
    I have a Trident Deep Black slip-on installed.  I think it weighs around 4 lbs.  The stock muffler is probably around 17-18 lbs, I think.

    According to Trident, with the baffle installed, the Trophy doesn't need remapping.  With the baffle removed, it should be remapped.  I ride with the baffle installed.

    Installation is simple and doesn't take any time at all.

    There are several pictures of the Deep Black installed from a few different members here:  www.triumph-trophy.com/index.php/topic,6070.0.html

     :002:
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    Re: After market exhaust V stock one
    Reply #4 on: Nov 13, 2017, 03.58 pm
    Nov 13, 2017, 03.58 pm
    *Originally Posted by nervouswreck [+]
    I am curious as to why the stock exhaust weighs in at so much.  Is it because it helps balance or offset the weight of the driveline on the opposite side?  Or what, anyone have a clue?

    The first thought I have on stock exhaust systems is that they weigh as much as they do because there is actually a lot going on within that system. Believe it or not, OEM systems are pretty carefully engineered these days as they have to try and strike that balance between performance and compliance.

    The header pipes, well they are what they are. Things don't get interesting until you hit the collector. Now you have the baffling material, catalytic converters (yes, many bikes have more than one) etc. to route airflow and do the bulk of the noise suppression. Then of course the muffler at the end, which is full of piping for more baffling, more packing for sound suppression and so on. Often times these stock systems are not made from exotic lightweight materials like a lot of aftermarket systems are, so that will add weight. Then add back pressure restrictor valves and oxygen sensors, and exhaust systems can get very heavy.

    Aftermarket systems have none or (very little) of the trappings that restrict and weigh down the stock system. However, unless a fuel controller is used in conjunction with the new, much less restrictive system, you will be leaving horsepower and torque on the table. And of course you are no longer compliant, which was usually not an issue years ago, but these days even that is starting to change.  That is why in many cases a simple slip-on is a better way to go for most street bikes. A slip-on can enhance the look, sound and power output of your bike, bringing modest gains while keeping the bike within emissions and flow rate/back pressure standards, so no fuel controller or additional aides are required. 
    "The most important thing is to have a good relationship with the bike... you have to understand what she wants. I think of a motorcycle as a woman, and I know that sounds silly, but it's true".  - Valentino Rossi

  • Offline nervouswreck   us

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    Offline nervouswreck

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    Re: After market exhaust V stock one
    Reply #5 on: Nov 13, 2017, 04.03 pm
    Nov 13, 2017, 04.03 pm
    *Originally Posted by Ghostrider25 [+]
    The first thought I have on stock exhaust systems is that they weigh as much as they do because there is actually a lot going on within that system. Believe it or not, OEM systems are pretty carefully engineered these days as they have to try and strike that balance between performance and compliance.

    The header pipes, well they are what they are. Things don't get interesting until you hit the collector. Now you have the baffling material, catalytic converters (yes, many bikes have more than one) etc. to route airflow and do the bulk of the noise suppression. Then of course the muffler at the end, which is full of piping for more baffling, more packing for sound suppression and so on. Often times these stock systems are not made from exotic lightweight materials like a lot of aftermarket systems are, so that will add weight. Then add back pressure restrictor valves and oxygen sensors, and exhaust systems can get very heavy.

    Aftermarket systems have none or (very little) of the trappings that restrict and weigh down the stock system. However, unless a fuel controller is used in conjunction with the new, much less restrictive system, you will be leaving horsepower and torque on the table. And of course you are no longer compliant, which was usually not an issue years ago, but these days even that is starting to change.  That is why in many cases a simple slip-on is a better way to go for most street bikes. A slip-on can enhance the look, sound and power output of your bike, bringing modest gains while keeping the bike within emissions and flow rate/back pressure standards, so no fuel controller or additional aides are required.

    Well thanks there ghostrider that explains a lot.

  • Offline Wilko   gb

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    Offline Wilko

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    Re: After market exhaust V stock one
    Reply #6 on: Nov 13, 2017, 07.33 pm
    Nov 13, 2017, 07.33 pm
    *Originally Posted by nervouswreck [+]
    Well thanks there ghostrider that explains a lot.

    Certainly does, when i have a few extra quid in the bank, job change etc isn't helping, I'm going to change the exhaust, I'm all for loosing weight, just wish I could  :745: :745: :745:
    Paul Wilko

  • Offline john348   gb

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    Offline john348

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    Re: After market exhaust V stock one
    Reply #7 on: Nov 13, 2017, 09.27 pm
    Nov 13, 2017, 09.27 pm
    I have a trident system without extra baffle.  It lowers the frequency but is not loud.  Perhaps slightly louder than standard but not much. 

    I thought the trophy uses a closed system so should not need a remap.  I have ridden probably 10000 miles so far with new exhaust.   

    Also I used to design exhaust systems for our then racing bike and the front pipe lengths and diameter are very important along with the collector design and silencer which then defines the power curve and max power. 

    I wonder if the big exhausts are there for the emissions as all bikes seem to sport them.

     



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