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Carbon Fiber pipe.... Interesting....

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I'm not pissed. LOL If I didn't already have a JP-1 I'd think about it. The weight factor is very tempting. Maybe I'll try one for my onroad if it is a reasonable price.
 
olds97_lss said:
Yeah, I don't really care one way or another. I would never spend that much on a pipe anyway.

But if you think about heat transfer, the exhaust pipe isn't or header isn't transfering any engine heat since it's not directly connected, it's insulated with silicone gaskets or couplers.

The reason it's hot is due to the tempurature of the exhaust gas's and air traveling through it.

Like I said, I agree that the chassis and engine mounts help to dissapate heat, but the exhaust dissapates it's own heat only.

That's all I was trying to say.
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sorry olds, this is wrong. the hotter your pipe gets the more heat it draws out of the engine through the exhaust. if the pipe can't retain heat it can't perform this function properly and you will end up with more heat retained in the engine. right where you dont want it. its a drawn through exhaust gasses thing, not a physical heat sink type transfer.
 
try asking anyone you know who has taken a thermodynamics course, they should be able to confirm it for you. i have not taken any, but its a general engine tuning knowldedge kinda thing. I'm pretty heavily into 1:1 turbo and nitrous performace engines and it plays into tuning those engines as well. why do you think some of the guys that run big blocks at the drags use header wrap? to keep in heat so it draws more heat out of the engine, it also helps scavenging.
 
Themo what? It is my understanding that header wrap is to keep the heat from radiating under the hood, and in the inlet. Be it a carb, or thottle body. That is why the make things called cold air intakes, and also why you see racers doing things like putting an ice bag on the intake itself.
 
That's OK, I got to go any way. There's a good movie on about Jessie James.

Later
 
Hypedonrc said:
Themo what? It is my understanding that header wrap is to keep the heat from radiating under the hood, and in the inlet. Be it a carb, or thottle body. That is why the make things called cold air intakes, and also why you see racers doing things like putting an ice bag on the intake itself.
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everything you stated is true. however header wrap has more than that one reason for its use, i stated the reason that is pertinant to our nitro cars. bags of ice is more for carburators than FI(fuel injection). you can actually hurt a FI cars performance by inappropriate use of ice. with thier computer controls they take intake tempurature into account to properly fuel the car. if you ice it, it will actually lean out the car. it does this because it reads warm ambient air in the intake tract and fuels accordingly. then that warm air reaches the cold intake manifold and condenses. the colder/denser air requires more fuel to burn properly, but the car has already fueled for the warmer air that it previously read. in this situation the ecu is tricked into running lean, not good for power, and with forced induction not good for motor longevity either.
 
stinger said:
You guys can find more info here too.

http://www.radiocontrolzone.com/forums/showthread.php?t=180933
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is it just me or are the guys on that forum stupid, they dont seem to understand that the heat problem isnt with the materials but actually trying to disipate heat away from the engine, less heat away from engine === doh blown engine, the funny part is there like magpies, eww it so shiny, i ve got to have it cause its pretty, but none of them are actually listening to the major question, are these pipes going to effect the heat in the engine?????????? and if they do are you willing to blow your RB or Novarossi Engine just for a pretty pipe, oh another point is that they may be bullet proof, if you get t boned and your allu pipe bends it obsorbs the shock, if these carbon pipes are that stron an inflexable and you get hit were does that shock or enertia go, geeeeee UUUmmm straight at the motor maybe, now i dont know how many of you have smashed off the exhaust outlet obn your engines before but i have and you throw basically a perfect motor away,



Like i said before just my thoughts and a bit of science, and imput from a fare few others but it my 2c
 
mikeburgin said:
is it just me or are the guys on that forum stupid, they dont seem to understand that the heat problem isnt with the materials but actually trying to disipate heat away from the engine, less heat away from engine === doh blown engine, the funny part is there like magpies, eww it so shiny, i ve got to have it cause its pretty, but none of them are actually listening to the major question, are these pipes going to effect the heat in the engine?????????? and if they do are you willing to blow your RB or Novarossi Engine just for a pretty pipe, oh another point is that they may be bullet proof, if you get t boned and your allu pipe bends it obsorbs the shock, if these carbon pipes are that stron an inflexable and you get hit were does that shock or enertia go, geeeeee UUUmmm straight at the motor maybe, now i dont know how many of you have smashed off the exhaust outlet obn your engines before but i have and you throw basically a perfect motor away,



Like i said before just my thoughts and a bit of science, and imput from a fare few others but it my 2c
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Well, I have got the pipe now and it's working great for me, you are now listening from someone who has the actual pipe working to back it up. No engine heating problem, a big noticeable power improvement. There a coupe of us to back it up as well instead of being skeptic and giving alot of theories based on assumtions and afraid of changing. :smoke:

http://monster.traxxas.com/showthread.php?s=&postid=1865886#post1865886
 
From what I see, a cf pipe that doesn't dissipate heat as well as an alum or steel pipe may cause engine overheating. But it just doesn't seem very likely to me. I can see a cf chassis causing problems because it is in direct contact with the engine, but the pipe is not. Granted the pipe dissipates some heat from the engine but not as much as the chassis. Most of the heat that needs to be expelled will be carried out of the stinger. I am sure that temps would go up some. I would love to see some temps comparing your old pipe and the new cf one.

I myself wouldnt buy one because it costs too much and once you crack it its trash.
 
My friend just put one on his Revo, Sounds really good. I think most of these carbon parts are more show than go though.
 
spatulator said:
Granted the pipe dissipates some heat from the engine but not as much as the chassis.
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I would say it is just the opposite, because you can touch the chasis with out being burnt, but the pipe gets pretty hot.
 
that pretty much goes along with what he's sayin bro. Because the engine is cooler that means it is dissipating more heat. The engine also takes on more heat than everything else to begin with so to stay at a relative cool temperature it is dissipating more heat than other components


oops, you guys are talkin bout the chassis, my bad. I read that wrong.
 

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