How (and why) to Ramble on your goat sideways
08-01-2013, 12:34 AM
Boost Pope
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Nah, mere arrogance and stupidity isn't nearly enough to get banned from M.n. For that, you have to do something really egregious, like question a decision made by Gary J. Fishman.
Last edited by Joe Perez; 08-01-2013 at 12:44 AM.
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08-01-2013, 12:47 AM
Boost Pope
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(facepalm)
I sometimes forget that forums other than MT exist, or that all forums aren't MT.
(Except for SuperAwesomeBronyForum.net, which is not at all difficult to distinguish from MT, as the logo is an entirely different shade of pink. More of a light purple, really. With with blue, rather than yellow, as an accent color.)
I sometimes forget that forums other than MT exist, or that all forums aren't MT.
(Except for SuperAwesomeBronyForum.net, which is not at all difficult to distinguish from MT, as the logo is an entirely different shade of pink. More of a light purple, really. With with blue, rather than yellow, as an accent color.)
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08-01-2013, 12:49 PM
Boost Czar
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08-01-2013, 01:38 PM
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08-01-2013, 02:57 PM
Many... and he fails in all of them.
The thing i like in perticular in that thread is the fact that hes running a plug in the front and thinking that a 160 degree thermostat will improve flow...
Quote - Hyper
"how difficult is for you to understand that in post no. 1 coolant ONLY exits throught the back of the head, really? There is a freeze plug in the front cylinder head and a block off plate in the t-stat neck.
Now assuming you understand, placing 160 t-stat at the front t-stat neck does nothing when the engine is warming up, it is just holding coolant in the coolant pipe until temperature reaches 160."
And then Savington ruined the fun.. DAMN PARTY POOPER!!!
The thing i like in perticular in that thread is the fact that hes running a plug in the front and thinking that a 160 degree thermostat will improve flow...
Quote - Hyper
"how difficult is for you to understand that in post no. 1 coolant ONLY exits throught the back of the head, really? There is a freeze plug in the front cylinder head and a block off plate in the t-stat neck.
Now assuming you understand, placing 160 t-stat at the front t-stat neck does nothing when the engine is warming up, it is just holding coolant in the coolant pipe until temperature reaches 160."
And then Savington ruined the fun.. DAMN PARTY POOPER!!!
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08-01-2013, 08:13 PM
Got to wondering today.
Has it ever been determined conclusively whether drivetrain losses are static or proportional? I see various discussions on this topic; one side claiming that a standard Miata drivetrain would always subtract the same x amount of HP whether the engine made 110 hp or 310 hp, and another side claiming that drivetrain losses function as some percentage of engine power and thus increase proportionally as engine power is increased.
It would seem like a relatively straightforward thing to test -- not cheap or easy, perhaps -- but straightforward. But someone, somewhere must have tested the rate of change between chassis dynamometers and engine dynamometers when engine power is increased (or decreased), right? Why is this still argued on car forums? Has a definitive answer been found, and if so, why isn't it widely known?
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08-02-2013, 12:28 AM
Boost Pope
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For the following, I am going to pull totally made-up numbers out of Hustler's ***, so don't quote me on exact values.
Let's hypothetically assume that at 130 MPH at wide-open-throttle on a race track, the transmission and differential convert 20 HP of mechanical energy into heat. This is equivalent to about 15,000 watts, and so the transmission oil gets hotter than all **** as a result.
If this were a constant, then the transmission and diff would also have to be dissipating 20 HP of mechanical energy when you're creeping through a parking lot at 5 MPH, and generating the same amount of heat.
This is clearly not the case.
While I can't give you a formula, I can assure you that loss in the drivetrain varies BOTH with speed and with load. It is NEITHER a static value nor a simple percentage of generated HP.
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08-02-2013, 01:09 AM
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Yeah. Logic would dictate that it is not static but proportional in some manner. I would guess it would also be exponential as well. Probably a small increase up the range.
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