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TMC Customs

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About TMC Customs

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Profile Information

  • Name
    Tom
  • Location
    Findlay, Ohio
  • Bike(s)
    2014 Triumph D675R
    2003 Honda Shadow Spirit 750

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490 profile views
  1. Nice! I have been watching a lot of race videos on YouTube at Nelson Ledges trying to remember all the turns, get a feel for the line, and see where the turn in and braking points are. Your dash is the clearest on video.
  2. Race license? No. Race license course certificate? Yes I was afraid I may get stuck in Novice but that may be the best way to learn a new track. I’m not sure how much help with lines you would get in intermediate but at some other track day orgs, it seems the control riders are willing to show you. I just put Pirelli SC2 slicks on and am a little concerned the Novice group will not keep them hot enough to get good traction. I will send my info into N2 and see what they come back with. I have done about 20 track days and am Advanced at Mid-O and Intermediate with STT.
  3. I am signing up for my first WERA event at Nelson Ledges this year (6/6). I have never been to Nelson Ledges so I will probably be signing up for my first N2 track day (6/4) as well. Anyone plan to be there any of those days that I can bounce questions off of?
  4. Does anyone wear an airbag vest? I just picked up a Helite E GP-Air and am hoping it saves my butt if I need it. Not much online about wearing air vests on track.
  5. @TwiztedRabbit I agree with you that this is a type of cold tear and I know you are a very experienced racer/track rider but your explanation on tire pressure vs temperature doesn’t sound right or I am misinterpreting what you are saying. The only ways for a tire to independently get heat is by either absorption, flex, or friction. The larger your contact patch, the more absorption you will get from a hot track but the more you will lose from a cold track. This would be far offset by the flex in the carcass generating heat and this is the single biggest thing to generate an even heat throughout the carcass of the tire because it comes from the inside of the tire rather than the outside in. The more tire pressure you have, the less contact patch you have and the less you will absorb. The less pressure you have, the more your tire will flex which will generate heat. To some extent, the less pressure you have, the more contact patch you will have but there is a limit and when you hit it, your contact patch will get smaller because the carcass will bend between contact points in a concave shape drastically decreasing your contact. So what I am saying so far is, less pressure=more heat throughout the tire. The last way to get heat is friction. So long as you are not sliding, the reactive force of friction on the contact patch and the heat generated would be independent of tire pressure meaning you will generate the same amount of heat energy. The smaller the contact patch, the smaller area you have to absorb the same amount of heat (for example; If you add the same amount of energy to a soda can as you do a garbage can, one will feel noticeably cooler). Adding a significant amount of heat to a small area will heat it faster than it can be absorbed by the rest of the tire and will cause the contact patch to start to peel away (cold tear). Where I think your information may have come from is a very hot track. If the track is very hot, your tire may be absorbing heat faster than it can dissipate to stay at its ideal operating temperature. That would be a tricky situation to balance.
  6. @motocat12 Yes, this is exactly it. STG suggested staying above 21psi on the rear tire, which I did but what I am reading on the reddit you posted and several other locations is that this tire just cannot handle a high track pace which seems to be confirmed by Michelin. The tire is basically tearing itself apart at the connection point between the two compounds and looking exactly like a geometry tear. I found a few instances of this in some of Dave Mosses videos and he basically said the tire was not matched to the riders pace.
  7. In theory, when you lower the pressure, you increase the surface area of the tire on the ground and increase the heat generated into the carcass. It may also allow the carcass to flex more which generates heat. I suspected I had cold tear which is when the carcass is not hot enough so I lowered the pressure. The left side of my tire gives a better idea of what may be cold tear, geometry issue, too hard rebound setting, or all of the above. The right side of the tire is destroyed beyond telling what happened so I am mostly focused on the left side. Check out the Tire Wear Guide under “Track is Crack” it has a lot of good information to start.
  8. In the Dave Moss video you posted, my tire looks almost exactly like what is at 2:30 which he says is a geometry cold tear. One thing I do when I get off the bike after every session, is I put my hand on the tire to see how warm it is. If I can comfortably leave my hand on their, it is not up to temp. With this tire wear, I would put my hand on the tire and it barely felt warm. i think with hot tear, your tire carcass needs to be somewhere near 200 degrees.
  9. Slow time of year for the track section of this forum so I figured there may be some people on here able to help me think through my tire wear issue (I read the sticky). I completely destroyed my rear tire during customer appreciation day at Mid-Ohio. It was about 55 degrees and windy and I had tire warmers which were having trouble keeping hot in the wind (they are very old). The tires are Michelin Power RS and I have had good performance out of them in the past. I normally run them around 28 psi but I had them at 24 for the cold temps. I didn’t get the chance to get any lower on the pressure because the tires were ruined before I could go out again. The pictures look to me like the worst cold tear I have ever seen but looking around at other riders who were not using warmers, they were not having this problem so I thought it could be suspension related. I attached a picture of my sag numbers. I was thinking either my suspension was too soft and not letting the tire get up temp (only felt warm to the touch when I got off the bike) or my rebound was too stiff (16 clicks out on stock TTX shock). The other option would be to just get a better set of tire warmers but it just doesn’t feel like that was the issue. Both the front and the rear suspension was refreshed last year. The bike is a ’14 D675R
  10. Did the cost of Mid-O track days go up for 2021? They didn’t have a very good showing last year and I don’t think they did any improvements. Feels like it should go down as the track gets worse.
  11. Looking at the WERA link, it appears they do not separate 600 and 1000 bikes during the race. Maybe I am reading it incorrectly.
  12. At Nelson Ledges, why do they split up the 600cc and 750+ bikes during practice but not in the races? Looks like they combine the classes.
  13. Can’t say I have seen someone use just one lever guard before.
  14. Looks like it is going to be 60 degrees. With as slick as this track is normally, I would think that temp would be a factor. Anyone have experience riding there at these temps?
  15. All the bike requirements are in their website. I think you just have to remove your license plate and cover your glass. Also, no oil filters with a nut on the top.
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