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An internal combustion engine is a heat engine not a Carnot heat engine.Quote from: wikipediaA Carnot heat engine[2] is a hypothetical engine that operates on the reversible Carnot cycle. The basic model for this engine was developed by Nicolas Léonard Sadi Carnot in 1824. The Carnot engine model was graphically expanded upon by Benoît Paul Émile Clapeyron in 1834 and mathematically elaborated upon by Rudolf Clausius in the 1850s and 60s from which the concept of entropy emerged. Quote So you are saying all the engines you have worked on are hypothetical, because it is not actually possible to build a carnot heat engine. QuoteIn general an engine converts energy to mechanical work. Heat engines distinguish themselves from other types of engines by the fact that their efficiency is fundamentally limited by Carnot's theorem.[3] Although this efficiency limitation can be a drawback, an advantage of heat engines is that most forms of energy can be easily converted to heat by processes like exothermic reactions (such as combustion), absorption of light or energetic particles, friction, dissipation and resistance. Since the heat source that supplies thermal energy to the engine can thus be powered by virtually any kind of energy, heat engines are very versatile and have a wide range of applicability.QuoteQuote Throttle position doesn't indicate rpm btw, only load, It certainly can indicate rpm, tho not as accurately as a tach. You can't tell me there's no relationship between engine speed and throttle position, taking load into consideration. It can indicate rpms accurately enough for this discussion which is trying to get to the bottom of a large problem in gear ratios.Quote a poorly tuned engine can be on WOT yet only be doing 3-4k, so that means jack, everything you have said points to a poorly tuned motor which is running out of power as the load comes on, it may have plenty of power down low but is probably dropping a cylinder or 2 as the revs come up. What would be your response if I posted a video of the bike with the speedo reading 60mph and the tach reading 8500k and you heard all 5 gear shifts?Quote I would like to see one of your POS veedubs The VW aircooled motor is the greatest achievement of Western Civilization, it's why God put man on this planet.Quote doing 9000rpm, these engines can do it with ease, providing they are tuned right, but seeing as you have it figured out and know exactly what you are doing carve into the engine cases chuck a bigger gear on the front and see if you can even get it to move, let alone improve the top speed. And on that note I'm out, enjoy destroying your bike Well, dude, you ain't half as frustrated as I am.
A Carnot heat engine[2] is a hypothetical engine that operates on the reversible Carnot cycle. The basic model for this engine was developed by Nicolas Léonard Sadi Carnot in 1824. The Carnot engine model was graphically expanded upon by Benoît Paul Émile Clapeyron in 1834 and mathematically elaborated upon by Rudolf Clausius in the 1850s and 60s from which the concept of entropy emerged.
So you are saying all the engines you have worked on are hypothetical, because it is not actually possible to build a carnot heat engine.
In general an engine converts energy to mechanical work. Heat engines distinguish themselves from other types of engines by the fact that their efficiency is fundamentally limited by Carnot's theorem.[3] Although this efficiency limitation can be a drawback, an advantage of heat engines is that most forms of energy can be easily converted to heat by processes like exothermic reactions (such as combustion), absorption of light or energetic particles, friction, dissipation and resistance. Since the heat source that supplies thermal energy to the engine can thus be powered by virtually any kind of energy, heat engines are very versatile and have a wide range of applicability.QuoteQuote Throttle position doesn't indicate rpm btw, only load, It certainly can indicate rpm, tho not as accurately as a tach. You can't tell me there's no relationship between engine speed and throttle position, taking load into consideration. It can indicate rpms accurately enough for this discussion which is trying to get to the bottom of a large problem in gear ratios.Quote a poorly tuned engine can be on WOT yet only be doing 3-4k, so that means jack, everything you have said points to a poorly tuned motor which is running out of power as the load comes on, it may have plenty of power down low but is probably dropping a cylinder or 2 as the revs come up. What would be your response if I posted a video of the bike with the speedo reading 60mph and the tach reading 8500k and you heard all 5 gear shifts?Quote I would like to see one of your POS veedubs The VW aircooled motor is the greatest achievement of Western Civilization, it's why God put man on this planet.Quote doing 9000rpm, these engines can do it with ease, providing they are tuned right, but seeing as you have it figured out and know exactly what you are doing carve into the engine cases chuck a bigger gear on the front and see if you can even get it to move, let alone improve the top speed. And on that note I'm out, enjoy destroying your bike Well, dude, you ain't half as frustrated as I am.
Quote Throttle position doesn't indicate rpm btw, only load, It certainly can indicate rpm, tho not as accurately as a tach. You can't tell me there's no relationship between engine speed and throttle position, taking load into consideration. It can indicate rpms accurately enough for this discussion which is trying to get to the bottom of a large problem in gear ratios.Quote a poorly tuned engine can be on WOT yet only be doing 3-4k, so that means jack, everything you have said points to a poorly tuned motor which is running out of power as the load comes on, it may have plenty of power down low but is probably dropping a cylinder or 2 as the revs come up. What would be your response if I posted a video of the bike with the speedo reading 60mph and the tach reading 8500k and you heard all 5 gear shifts?Quote I would like to see one of your POS veedubs The VW aircooled motor is the greatest achievement of Western Civilization, it's why God put man on this planet.Quote doing 9000rpm, these engines can do it with ease, providing they are tuned right, but seeing as you have it figured out and know exactly what you are doing carve into the engine cases chuck a bigger gear on the front and see if you can even get it to move, let alone improve the top speed. And on that note I'm out, enjoy destroying your bike Well, dude, you ain't half as frustrated as I am.
Throttle position doesn't indicate rpm btw, only load,
a poorly tuned engine can be on WOT yet only be doing 3-4k, so that means jack, everything you have said points to a poorly tuned motor which is running out of power as the load comes on, it may have plenty of power down low but is probably dropping a cylinder or 2 as the revs come up.
I would like to see one of your POS veedubs
doing 9000rpm, these engines can do it with ease, providing they are tuned right, but seeing as you have it figured out and know exactly what you are doing carve into the engine cases chuck a bigger gear on the front and see if you can even get it to move, let alone improve the top speed. And on that note I'm out, enjoy destroying your bike
Okay, I'll throw my hat in the ring one more time...Since you're waiting on a new tach cable, I'm going to ignore the RPM thing all together...Are you 100% sure that your throttle is opening all the way?
Okay this is an interesting but frustrating thread. First does the bike shift through all gears? At 10mph in first gear is your motor screaming and tach pegged to the limit? Are you sure you are in fifth gear?
Thanks, yes I counted the gears many times, not believing that it could be maxed out at those speeds. That's what got the comics indo derision mode to begin with, I thought the bike was missing a 6th gear cuz I read the Haynes manual and took the gear specs for the 400 to be for the 550. The Haynes manual covers both.
Below is a link where you can select your bike and it will give you speed and RPM. It will also allow you to change sprocket sizes.try this to help diagnose the issue.http://www.gearingcommander.com/
34 tooth final drive sprocket on my 550 that came stock with a 37 tooth sprocket and why.
This bike had a 74 tooth rear sprocket and a 17 tooth front sprocket. What is your guess at why someone would put a 34 tooth sprocket on the back of a stock (non racing) setup?
The fat, uh, lady? has sung on this one.
If he is running points ignition and his condensers took a crap,it could scream along and barely go.But, he says that he can pop wheelies. Eric
come on breezy,update us,im keen to find out what it is.
