06-14-2021, 02:41 PM
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#111 (permalink)
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Mechanical engineer
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If someone wants to test wheelcover savings easy in their car this is the way to go:
https://youtu.be/dHMWk8llX-E
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06-15-2021, 07:59 AM
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#112 (permalink)
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Quote:
Originally Posted by Vekke
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I must admit I am at a bit of a loss.
Covering the wheel trim in (what? sticky cling film?) doesn't to me equal "If someone wants to test wheelcover savings easy".
Like, how do you then test the savings?
If I have misunderstood and it's just about covering wheel trims, well, just packaging tape would do that.
As I say, maybe I have missed the point? |
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06-16-2021, 01:52 PM
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#113 (permalink)
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Master EcoModder
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doesn't to me
Quote:
Originally Posted by JulianEdgar
I must admit I am at a bit of a loss.
Covering the wheel trim in (what? sticky cling film?) doesn't to me equal "If someone wants to test wheelcover savings easy".
Like, how do you then test the savings?
If I have misunderstood and it's just about covering wheel trims, well, just packaging tape would do that.
As I say, maybe I have missed the point?
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1) I don't believe the video goes beyond a simple means of providing a flush, full-coverage wheel cover.
2) a single piece of material/ wheel, vs many overlapping pieces of packing tape, or zip-tied 'janky' cardboard covers, pizza trays, etc..
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06-16-2021, 02:33 PM
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#114 (permalink)
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Cyborg ECU
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Quote:
Originally Posted by Vekke
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Looks great, Vekke. That book wrapping laminate is pretty vigorous. Certainly enough for mere testing. Clean and quick. We could use other tape, but it you have access to sheets like this, it is faster and easier. Also, clear means you are relatively inconspicuous. I like that too.
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See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.
Last edited by California98Civic; 06-17-2021 at 01:45 AM..
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06-16-2021, 07:10 PM
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#115 (permalink)
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Quote:
Originally Posted by aerohead
1) I don't believe the video goes beyond a simple means of providing a flush, full-coverage wheel cover.
2) a single piece of material/ wheel, vs many overlapping pieces of packing tape, or zip-tied 'janky' cardboard covers, pizza trays, etc..
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OK, it was what Vekke wrote that had me confused then. He said "If someone wants to test wheelcover savings easy in their car this is the way to go".
Of course, this isn't a way of testing wheel cover savings at all; it's a way of covering the wheel with plastic sheet.
How one then tests the saving (or otherwise) resulting from that is, to me, the important question. |
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06-16-2021, 07:29 PM
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#116 (permalink)
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Master EcoModder
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OK
I, for one, appreciate the clarification.
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06-16-2021, 08:20 PM
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#117 (permalink)
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Perhaps Vekke would appreciate some friendly persuasion? Instead of, you know, pushback?
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06-16-2021, 10:01 PM
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#118 (permalink)
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Quote:
Originally Posted by freebeard
Perhaps Vekke would appreciate some friendly persuasion? Instead of, you know, pushback?
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I don't know, Freebeard. I just go on what is written, and I honestly thought that we were potentially looking at a new way of measuring "wheelcover savings" - something that is very, very hard to do in the real world. I was therefore a bit disappointed that it turned out to be just a way of wrapping a wheel. |
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06-16-2021, 10:27 PM
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#119 (permalink)
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Master EcoModder
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Disappointment in life? You'll get used to it.  I'm still disappointed that you capitalize my handle.
Vekke made a post on the 14th showing a 'way to go'. Today is..... 'Today'. Maybe Vekke won't come back to the thread to share what he's doing. I'm impressed with his meticulousness. I'm in no position to second-guess the results.
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06-16-2021, 10:40 PM
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#120 (permalink)
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Banned
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Quote:
Originally Posted by freebeard
Disappointment in life? You'll get used to it. I'm still disappointed that you capitalize my handle.
Vekke made a post on the 14th showing a 'way to go'. Today is..... 'Today'. Maybe Vekke won't come back to the thread to share what he's doing. I'm impressed with his meticulousness. I'm in no position to second-guess the results. |
I think we've had this discussion before, but you should look really closely at how Vekke is measuring his energy consumption results.
From what he has posted here, he is doing a 3 minute run in each direction at 100 km/h, taking 5 instantaneous energy consumption measurements each way.
And then claiming he can measure aero variations down to 0.6 per cent.
Just apply that idea to measuring fuel consumption of an ICE car using the instantaneous fuel consumption readout... and try to get repeatable results with the car in exactly the same configuration. You won't be able to.
I am concerned that if the testing methodology is as bad as that, and people (maybe like you?) are not looking at how it is actually being done, then any results he gets are likely to be highly misleading of others.
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