Motorcycledave
Active member
Well I hope this cuts down on the heat, what do you think......?:dontknow:
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How much Tupperware did you take off to get to the headers. I have the same wrap, but don't know whether I'll get around to putting it on because I'm lazy.Well I hope this cuts down on the heat, what do you think......?:dontknow:
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Let's just say the frunk and rear compartments and glove box stay on. Everything between and below come off. In my case, I even loosened the section in front of the oil cooler, so I could get to the front of the cylinder. You need to get the Spyder down to the exploded view to get it done.How much Tupperware did you take off to get to the headers.
Been there, done that. Totally worthless.
http://www.spyderlovers.com/forums/showthread.php?52269-ST-heat-on-left-side&p=646540#post646540
By all means try it for yourself if you wish. Just don't try to touch the pipes after they've been wrapped and the engine has been running for a bit. My infrared thermometer tops out at 850 degrees F and only reads "Hi" (overload) when I try to read the wrapped pipe temperature.
I saw no improvement whatsoever in the heat reaching my legs.
If anyone thinks an 1/8" to even 1/4" of fiberglass can be an effective insulation for anything (much less for exhaust pipes) then try insulating the walls in your house with the stuff and see if it makes a hill of beans difference or wear it as a coat on a frigid day. And yes, it's the same thing whether you're trying to keep heat in or cold out. Just trying to make a point. If it wasn't for all the hype would you believe it using common sense?
That is absolutely correct about the radiation. Heat is conducted three ways, conduction, convection, and radiation. Fiberglass wrap cannot stop convection (the real villain in the case of burning legs), it cannot stop conduction for long (just try to touch your wrapped pipes), and is only very mildly effective with radiation. It's not even the fiberglass that helps with radiation but the small amount of pigments they add to the wrap. Fiberglass is made of glass fibers (surprise) and glass cannot stop infrared radiation well at all (just look at all the modern kitchen stoves that actually use relatively thick glass as the stove top above the ribbon infrared heating elements). They only use fiberglass for the wrap because it doesn't burst in flames at these temperatures and because they can no longer use asbestos. So the only "active ingredient" in exhaust wrap is the minute amount of pigment trying to stop massive amounts of infrared radiation. You would be better off using something that radiation has a tougher time penetrating such as foil as long as you could insulate it enough from conduction so it doesn't begin to radiate itself. That's why foil is used over thick foam by BRP under your tupperware. That actually has a decent chance of lowering conduction and convection by use of the foam, and radiation by use of the foil. Notice however that BRP doesn't even bother with exhaust wrap even though I'm sure they would absolutely love to solve the heat problem that has been plaguing them with all of their Spyder models all these years. You don't even see it on the 2013 redesigns. That's because they've either tested it and it failed or their thermodynamic engineers tell them it's a total waste of time. This should have been the first clue that it doesn't work for this purpose.It is not really a matter of trying to insulate the pipes. It is a matter of trying to reflect radiated heat back inward, so it is carried out the exhaust pipe. Becuase the exhaust temperatures have been measured to be increased in testing, it is obviously at least somewhat effective in that manner. Can't say how effective it is for these purposes, but it does reduce engine compartment temperatures on race cars and raise exhaust gas temperatures. I personally am not sure it would be woth the effort, but I doubt it is completely useless. JMHO
So what did they suggest? I don't know an engineering mind that wouldn't at least take a stab at it.I went down to the thermodynamics lab where I work this morning where the highly experienced and expert thermal engineers there are trusted to resolve any and all issues concerning both heat and cold. The company I work for trusts them with hundreds of millions of dollars worth of revenue which would be lost if they failed at their jobs. When I passed this by them and asked if there was any way it could work they just laughed and commented "Not very :cus: likely".
So what did they suggest? I don't know an engineering mind that wouldn't at least take a stab at it.
They suggested I get a life. nojoke :roflblack:
Okay I'm not arguing the facts presented here, so no flaming required.
For those of us who have notice a reduction in heat on the seat and tupperware, have not noticed boiling gas and have seen an increase in mileage from pre-wrapped pipes. How does the physics and math work out to explain the change? has improved scavanging improved mileage? Has wrapping the pipes redustributed the concentration of heat is some spots and evened it out across the pipe, so It's not as hot up against the tank or imediately under the air box?
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