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3rd C8 Wheel Found?

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  • John
    started a topic 3rd C8 Wheel Found?

    3rd C8 Wheel Found?

    Yesterday’s atsam@IG’s video has raised the question as to whether his video, posted by Corvette_Nut on YouTube and repeated below, has identified a third ME wheel option, or whether it is really the standard split spoke wheel we have repeatedly seen for the last 1 1/2 years though previously only in black — though obviously now in a silver color?

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    Here is the black, open/split 5-spoke wheel (option code Q8Q), we have seen for so long.

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    We further know from the leaked GM Workbench Software screen print that there is a high probability of that black split/open spoke also being in “bright silver” (option code Q8P).

    The other C8 wheel option we have seen since from that October, 2017 first real ME sitting at MacDonalds, referred to by GM as the 5-Trident wheel, by most of us as the Mickey D wheel, is this one (proabably option code Q8T), has been:

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    However, there is an interesting third wheel option listed in the leaked specs, referred to as Machine Faced w/ Sterling Silver (Q8Q). Might this latest wheel be a third, separately defined C8 wheel? Or is this another example of the preliminary specs having a wrong or missing written description? Its description is different from the wheels were have earlier seen in that it neither has the words “open/split,” nor the words “5-Trident” in its written description.

    Spoke width or perhaps spoke shape from the wheel center as the spoke goes toward the wheel edge might be key assists to help us answer this question.

    Re-reviewing that video and the below screen prints taken at 1/4 speed, do you think we are seeing a third ME wheel?



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    Might the fact that the wheel spokes are rotating at speed give us a false idea as to what we are perceiving, perhaps exaggerating seeming “spoke width” which in turn erroneously have us thinking this could be a ME third wheel option when it is not?

    Any wheel specialists here that could help answer this question?
    Last edited by John; 05-07-2019, 08:14 AM.

  • John
    replied
    You are so right Klinn. My 20 spoke Z06 wheels are far from a joy to clean also. Changed out my brake pads from OEM and that significantly reduced wheel dust and cleaning intervals (e.g., more driving).

    Leave a comment:


  • Klinn
    replied
    Originally posted by John View Post
    Nice picture of 5- Spoke Trident wheel, option Q8T.
    It's an interesting design when finished the way we've seen it so far. The polished bits give the wheel that thin spoke look popular these days on supercars, but the thicker web and extra 'trident' spokes finished in black should make for a stronger wheel. If you recall that NYC video, when the car was moving you didn't even notice the black finished bits, just the thin shiny main spokes and rim lip.

    Only downside is that all those extra spokes means extra cleaning of nooks and crannies.

    Leave a comment:


  • dweaver
    replied
    Originally posted by meyerweb View Post
    The first bikes with disk brakes mounted them on the front of the forks, positioning them at the top of the disk. It was later found that in that location, heavy braking would cause the braking force to apply a twisting load to the forks. Mounting them behind the forks eliminated that.
    I'm trying to wrap my head around that and figure out why, and all I can come up with is one caliper applying more pressure (and more braking effort) than the other.

    Leave a comment:


  • Racer X
    replied
    I like the 3-d aspect of these wheels.

    Leave a comment:


  • ZORA 69
    replied
    Haven't really seen a C8 wheel,I like yet

    Leave a comment:


  • John
    replied
    Nice picture of 5- Spoke Trident wheel, option Q8T.

    Click image for larger version

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  • Nitrobrother
    replied
    Please forgive the off-topic ramble...

    As an official Olde Farte, I lament the lack of "dish" in today's wheels. I understand that positive offset is great for handling and all that, but I sure like negative offset for sheer badassery!
    As exhibit A, I submit Dusty Rhode's classic FED with my all time favorite way-cool Rebel wheels...sigh.
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    </whining>

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  • meyerweb
    replied
    Originally posted by Nitrobrother View Post
    Hmm...I'm starting to like the "5-trident" wheel the more I see it.

    The "10 RF" marking on the spoke might indicate "right front" so putting the caliper 'between the axles' could be to help reduce the polar motion weight. I'll need to check out other images but that's first thing out of the grey matter.
    Motorcycles have mounted the front calipers behind the forks for decades. The first bikes with disk brakes mounted them on the front of the forks, positioning them at the top of the disk. It was later found that in that location, heavy braking would cause the braking force to apply a twisting load to the forks. Mounting them behind the forks eliminated that. I'm not sure the weight of the calipers is enough to make any real difference in polar moment, but it could affect steering in a similar way to how it affects motorcycles.

    Early Honda CB750 (the first mass produced four cylinder motorcycle) caliper

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    Modern radial front brake caliper:

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  • John
    replied
    Originally posted by Nitrobrother View Post
    Hmm...I'm starting to like the "5-trident" wheel the more I see it. The "10 RF" marking on the spoke might indicate "right front" so putting the caliper 'between the axles' could be to help reduce the polar motion weight. I'll need to check out other images but that's first thing out of the grey matter.
    Good thinking Nitrobrother. Reducing polar moment would be a smart handling improvement, and as long as they can get adequate cooling to the brakes in that location, it would be a nice extra win.

    Leave a comment:


  • John
    replied
    My wife and I are 100% (of the wheels we so far have seen) getting the 5-Tridents with their polished five main spokes and polished perimeter ring, with Spectra Gray wheel barrel and secondary spokes.

    Totally agree with you meyerweb, the secondary spokes often disappear in such a combo — which is fine with us also.

    If we get a nice surprise third wheel option at the reveal, of course open to potentially embracing it.
    Last edited by John; 05-17-2019, 04:20 PM.

    Leave a comment:


  • meyerweb
    replied
    Originally posted by John View Post
    5-Trident wheel close ups. We do not have any that are not road dirty, but as Chazcron took the road ones and cleaned them up, we have this good picture of what they look like, here with the Spectra Gray background (option code Q8T). However Spectra Gray is a glossy metallic, something we are not seeing here.

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    With the small (trident) spokes blacked out, and the main spokes machine faces, I think those are pretty nice. With everything silver, I think they pretty busy. Of the wheels we've seen so far, I think my choice would be the silver open spoke, but I'd prefer a simpler design, without the weird "twist" at the base of one spoke of each pair.

    But I guess I'm just an old curmudgeon. I think most of today's wheels are too busy, and trying to hard for "style."

    Leave a comment:


  • Nitrobrother
    replied
    Hmm...I'm starting to like the "5-trident" wheel the more I see it.

    The "10 RF" marking on the spoke might indicate "right front" so putting the caliper 'between the axles' could be to help reduce the polar motion weight. I'll need to check out other images but that's first thing out of the grey matter.

    Leave a comment:


  • John
    replied
    Another dirty, testing 5-Trident wheel picture. Thank you Corvette_Nut. Interesting where the caliper is mounted.

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  • John
    replied
    Originally posted by brad66 View Post
    Spectra Gray on cleaning day. Doesn't everyone take their wheels inside to clean them?

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    Great picture of those wheels. Thanks Brad.

    Leave a comment:

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