KnifeySpoony Posted September 6, 2021 Share Posted September 6, 2021 I'm not sure how it's possible but it seems my right front tire is rubbing on my wingstay despite there being a ~1cm gap. Anyone seen this? Link to comment Share on other sites More sharing options...
KnifeySpoony Posted September 6, 2021 Author Share Posted September 6, 2021 I know tires expand/balloon out at speed but I'm surprised that it would this much. Link to comment Share on other sites More sharing options...
Kitcat Posted September 6, 2021 Share Posted September 6, 2021 Here is a photo of my “wing-stay adjuster”(pat. pending). Link to comment Share on other sites More sharing options...
Anker Posted September 6, 2021 Share Posted September 6, 2021 1 hour ago, KnifeySpoony said: I'm not sure how it's possible but it seems my right front tire is rubbing on my wingstay despite there being a ~1cm gap. Anyone seen this? If you run at low pressures and aggressive turning that is quite possible. What pressures and what kind of driving do you do? Link to comment Share on other sites More sharing options...
KnifeySpoony Posted September 6, 2021 Author Share Posted September 6, 2021 Just got back from the track. Running 21-22psi hot. Link to comment Share on other sites More sharing options...
coffee break Posted September 6, 2021 Share Posted September 6, 2021 Radial tire flex due to hard cornering. Link to comment Share on other sites More sharing options...
KnifeySpoony Posted September 6, 2021 Author Share Posted September 6, 2021 28 minutes ago, coffee break said: Radial tire flex due to hard cornering. Even that far from the contact patch? Link to comment Share on other sites More sharing options...
Anker Posted September 6, 2021 Share Posted September 6, 2021 21 minutes ago, KnifeySpoony said: Even that far from the contact patch? Yes! What are those tires? The sidewalls must be quite flexible. Performance tires usually have less flexible sidewalls. Link to comment Share on other sites More sharing options...
KnifeySpoony Posted September 6, 2021 Author Share Posted September 6, 2021 ZZS Link to comment Share on other sites More sharing options...
Anker Posted September 7, 2021 Share Posted September 7, 2021 2 hours ago, KnifeySpoony said: ZZS I am not familiar with those. Link to comment Share on other sites More sharing options...
KnifeySpoony Posted September 7, 2021 Author Share Posted September 7, 2021 Avon ZZS is the stock tire on new Caterhams with 13" wheels. It is the more street oriented tire, but still track worthy. The ZZR is the more track focused tire. Link to comment Share on other sites More sharing options...
Anker Posted September 7, 2021 Share Posted September 7, 2021 Check the thickness of the washer under the nut that holds the lower attachment of the stay. If there is a thick washer, or multiple washers you can move the stays a bit away from the tires. On my road tires I can push my fingers into the gap past the first knuckle but not past the second knuckle on my fingers. Link to comment Share on other sites More sharing options...
Davemk1 Posted September 10, 2021 Share Posted September 10, 2021 On 9/6/2021 at 5:04 PM, KnifeySpoony said: Even that far from the contact patch? When the contact patch of the tire is pushed to one side due to cornering forces it drags some of the rest of the radial structure in that same direction....and oddly it makes the upper part of the tire move in the opposite direction. Think of the tread area and it's belts as a stiff ring around the outside of the tire...when you push part of it one way it will tilt the entire ring and this will move it inward at times toward the stay. I'll bet if you slalom right/left/right and lean out and watch the driver's side tire you'll be able to see it happen. dave Link to comment Share on other sites More sharing options...
KnifeySpoony Posted September 10, 2021 Author Share Posted September 10, 2021 Ok that makes sense Link to comment Share on other sites More sharing options...
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