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03-11-2021, 10:23 AM | #1 |
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Join Date: May 2010
Location: VA
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Throttle Position
This is just out of curiosity, but in 3rd at 45 mph on the level with a Tilly, it seems like I have about 75% of the throttle travel left. Is there any easy was to see what the butterfly position really is?
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03-11-2021, 12:52 PM | #2 |
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Join Date: May 2010
Location: Largo Florida
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Re: Throttle Position
Have you tried setting the hand lever to match the foot position, then look at the throttle shaft position ?
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03-11-2021, 01:39 PM | #3 |
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Re: Throttle Position
Push the clutch in, turn off the key, and coast to a stop. Then get out and look.
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03-11-2021, 06:30 PM | #4 |
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Location: Ohio
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Re: Throttle Position
It does not surprise me. At 45 MPH you are not pushing the cars abilities. Not only that it's a fairly light car.
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03-11-2021, 07:46 PM | #5 |
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Location: Highland, CA
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Re: Throttle Position
Oh, you said "easy". But since you're curious I'll leave this here. As can be seen, by the graphs, RPM (speed) vs TPS is highly dependent on driving conditions. I will say that based on what I've observed 75% at 45 mph seems about right.
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03-12-2021, 12:26 AM | #6 |
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Re: Throttle Position
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03-12-2021, 12:49 AM | #7 | |
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Re: Throttle Position
Quote:
JayJay
__________________
JayJay San Francisco Bay Area ------------------------ 1930 Murray Town Sedan 1931 Briggs S/W Town Sedan |
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03-12-2021, 06:12 AM | #8 |
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Location: VA
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Re: Throttle Position
I meant it seems like the throttle is only 25% open, is that what you mean? As a former instrumentation engineer, I salute you on adding the TPS! When I click on the graphs, they are too small to read, can you post the URLs of the images?
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03-12-2021, 08:19 AM | #9 |
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Join Date: May 2010
Location: Largo Florida
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Re: Throttle Position
Because you're just loafing along on level ground not much throttle opening is required. It doesn't take much horse power for that.
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03-12-2021, 12:33 PM | #10 |
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Location: VA
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Re: Throttle Position
I think my coupe's non-aerodynamics chews up a good bit of the power when going 45mph on level ground.
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