Heat , insane heat.

Chaotic said:

I made a similar comment in a different thread on this subject. None of these things alter the amount of heat produced by the engine. They just trap it in, or possibly redirect it.

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Chaotic said:

I made a similar comment in a different thread on this subject. None of these things alter the amount of heat produced by the engine. They just trap it in, or possibly redirect it.

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ghostdog6 said:

Exactly. Unless you find a way to get some airflow to that area to move the heat out, nothing is going to change it. I never bothered to get the updated covers installed on my 12 for that reason. Better out than in as far as I'm concerned.

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Joker1199 said:

To the fuel tank maybe?

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Chaotic said:

I made a similar comment in a different thread on this subject. None of these things alter the amount of heat produced by the engine. They just trap it in, or possibly redirect it.

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b9009b said:

Can we put heat tape on the underside of the tank like we do on the seat?

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bradp51 said:

Yeah keep telling yourself it runs cooler and I am sure you will believe it. You may even make some others believe it.

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kismetcapitan said:

aww, I sense the butthurt. I'm sorry, I didn't mean to take it that far. I forgot that it was rude to challenge your opinions with pesky empirical data. Who'd believe an infrared thermometer over the mighty truth of The Word of Brad?

guess where exhaust heat goes, if it doesn't radiate out of the pipes? It stays in the bike? Really? REALLY??

let's say the temperature of the exhaust as it enters the header is, for the sake of argument, 1000 degrees. and if it is still 1000 degrees when it exits the exhaust into the atmosphere, you will have what is a "cooler" bike, because zero heat escaped through the exhaust pipes and all you have left is radiated heat from the engine casing.

obviously that's not the case. but the more you insulate the pipes, the less heat loss you have in the exhaust gases. or in other words, less heat cooking the subframe and seat.

to opine that doing anything to reduce seat temperatures is completely ineffective really says that you're too lazy to do anything about it...other than pooh-pooh people that do try various approaches with the mighty internet keyboard. the thought of another Panigale running cooler than yours must really stick in your craw something awful

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lamb00j said:

Exhaust wrapping is not without its risks. First, the higher exhaust exit temperatures can lean out the fuel mixture of an engine – sometimes severely. An overly lean situation can lead to rapid engine failure. Thus, wrapped pipes may necessitate either re-jetting or a change in mapping depending on your bike’s fuel management system.

There is also a real risk of header and pipe damage due to excessive heat build-up. There are numerous reports of split and cracked exhausts that can be attributed to the use of exhaust wrap.

Some years ago John Wittner (builder of Battle of the Twins Moto Guzzis) warned against the use of such wrapping on titanium pipes, which overheat, react with oxygen, and transform into a mass of loose yellow flakes. During the two-stroke era in 500cc Grand Prix, bikes appeared for the Japanese GP with pipes insulated by various means. This was done to meet new noise regulations. Later, it turned out to have undesired tuning effects so its use was discontinued.

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lamb00j said:

Exhaust wrapping is not without its risks. First, the higher exhaust exit temperatures can lean out the fuel mixture of an engine - sometimes severely. An overly lean situation can lead to rapid engine failure. Thus, wrapped pipes may necessitate either re-jetting or a change in mapping depending on your bike's fuel management system.

There is also a real risk of header and pipe damage due to excessive heat build-up. There are numerous reports of split and cracked exhausts that can be attributed to the use of exhaust wrap.

Some years ago John Wittner (builder of Battle of the Twins Moto Guzzis) warned against the use of such wrapping on titanium pipes, which overheat, react with oxygen, and transform into a mass of loose yellow flakes. During the two-stroke era in 500cc Grand Prix, bikes appeared for the Japanese GP with pipes insulated by various means. This was done to meet new noise regulations. Later, it turned out to have undesired tuning effects so its use was discontinued.

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Chaotic said:

They always do that to my race bikes, every time, regardless of what kind of bike it is. Cooler fuel makes more HP.

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kismetcapitan said:

aww, I sense the butthurt. I'm sorry, I didn't mean to take it that far. I forgot that it was rude to challenge your opinions with pesky empirical data. Who'd believe an infrared thermometer over the mighty truth of The Word of Brad?

There are two sources of heat that combine to make the Panigale uncomfortable in hot weather. One is the motor. The other is the exhaust pipes.

let's say the temperature of the exhaust as it enters the header is, for the sake of argument, 1000 degrees. and if it is still 1000 degrees when it exits the exhaust into the atmosphere, you will have what is a "cooler" bike, because zero heat escaped through the exhaust pipes and all you have left is radiated heat from the engine casing.

obviously that's not the case. but the more you insulate the pipes, the less heat loss you have in the exhaust gases. or in other words, less heat cooking the subframe and seat. by cutting exhaust heat, you're not getting rid of heat completely - there's still the motor. But go for a spirited ride in 90 degree weather, then as soon as you park, pull out an infrared thermometer and see where it's hottest. It ain't the motor, I'll tell you that. It's that damned metal heat "shield".

ever notice that those with carbon heat shields complain the least about heat? titanium headers make a difference too. heat wrap helps, but the single most effective change I made to reduce heat transfer into the seat was to swap in a '15 Pani R carbon heat shield.

reflective heat tape deals more with the heat radiating off the vertical cylinder. It's not much, but there's more heat felt through my comfort seat (which I haven't taped yet) versus the thinner stock seat (which has been taped). no one would bother taping the underside of fuel tanks if it made no difference at all. a small difference is always better than no difference.

I also have the covers off my rear cylinder. It gives the motor a pathway to radiate heat directly to the air. It also looks nicer. But friends that have replaced the stock engine covers with carbon fiber covers get less thigh roast. And that heat doesn't "stay" in the motor. Being water-cooled, the heat eventually leaves the bike through the radiator. trapping heat all around the motor just makes the coolant work harder. as long as coolant temps aren't excessive, using the engine covers really ends up being a matter of personal preference (or being OCD about coolant temps being a couple degrees higher).

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bradp51 said:

I did not read all of your answer. Its okay you did not upset me. You lost all credibility with me when you:

forced sprockets nuts on that were a different thread

and

tried to use a 5mm hex or similar when trying to tighten your cush drives, which requires a 12mm hex.

Anyway apart from a chuckle every now and then, I do not get too much out of reading your posts, so will probably not read too many in future.

I am sure you will not be reading too many of mine. Good luck with your bike and I hope you stay safe on the road.

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b9009b said:

Thanks. Do you have a pic of how they wrapped your duc tank?

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bradp51 said:

I did not read all of your answer. Its okay you did not upset me. You lost all credibility with me when you:

forced sprockets nuts on that were a different thread

and

tried to use a 5mm hex or similar when trying to tighten your cush drives, which requires a 12mm hex.

Anyway apart from a chuckle every now and then, I do not get too much out of reading your posts, so will probably not read too many in future.

I am sure you will not be reading too many of mine. Good luck with your bike and I hope you stay safe on the road.

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wilkson said:

You didn't read all of it What he said was he transferred the heat from the rear cylinder into the already under sized radiator heating up the bike so it can suck any HP gains his modifications have given him

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