OsuMj

I just tease you bc I don't hate you.

Did you somehow turn into a 15 year old girl #hashtag

Its possible its had too many pizzas ordered from it, but I can almost guarantee there hasn't been too many sandwiches made near it.

I know it was pretty much a highway ride home, but it was super relaxing! Had a lot of fun today.

? I see them hanging out in my garden a lot.

This is apples and oranges with the issue of grip for a motorcycle tire on the road.

I think that's essentially your answer as far as lateral tire slip - cornering, I guess it depends mainly on your coefficient of friction and your turning radius. I can't think of any canceling effects for getting mass out of the longitudinal tire slip direction, so if you were simply to increase the force (from accelerating) in a straight line, you could cause tire slip easier with a lighter bike I would think?

mine started working, then stopped working, then started working again... so I'm good for now.

Ok, so I think we have two separate ideas here: 1. The idea of frictional forces that hold you to the road (independent of area), 2. The idea of optimal tire design (not independent of area). We've established several valid reasons to have higher contact area: 1. heat dissipation 2. material limitations with shear stresses 3. road surface imperfections such as bumps or slickness from oil etc. 4. introducing lower tire pressure to increase your coefficient of friction as a result of material property change others? I'm only reiterating what I think I remember learning in classes, but if you don't believe me, I encourage you to google laws of tribology, or amontons 2nd law. Perhaps there are people who will do a better job of explaining F=uN is the governing equation regarding friction and slip. I'm not saying there aren't other effects coming into play, but that I think this is the most important in determining if slip will occur.

Ugh, ok, I'm computer dumb. I can't get OR to work on Mozilla, but is working fine on IE. Any thoughts?

I'm pretty sure your coefficient of friction will include van der waals forces as well as any generalized contact factor due to surface roughness. So, sure, we agree that static friction coefficient is larger than the kinetic friction coefficient. But, I still don't see how contact area matters... equations and articles would be very helpful here. Everything that I have learned is that when you have smaller contact area, your pressure increases (force over area), and the change in pressure compensates for the change in friction almost one for one, which is why you generally don't need to take into account your surface area... again, with exception to the already discussed reasons.

We are definitely saying different things. I'm saying that I don't think that contact area [really] matters. A random non-rotating object will be subject to both a static and kinetic friction coefficient as well. You are saying that contact area does matter because wheels are more complex situations... and I don't understand what 'complexities' are making it so that the contact area matters, with exception to the reasons already discussed so far (such as heat dissipation, imperfections in the road, change in friction coefficient with varying tire pressure).

I was pretty certain that abs lets you stop faster because the coefficient of static friction (wheels in direct controlled contact) is larger than the coefficient of kinetic/dynamic friction (wheels sliding), so when your tires can actually make controlled contact with the surface, they are able to create a larger "stopping" force.... Again, I'm not expert, but this was my understanding. I could see changing the tire pressure so that you can change the coefficient of friction, since rubber is such a complex material, I'm sure that adding air and making it stiffer or taking air out and making it less stiff will change its properties. Just so I can understand what you're saying about the complexities of the rolling wheel, maybe you could direct me to some equations or an article?

As everyone's boss is trying to figure out why this friday morning was so much more productive than all the other friday mornings....

Makes sense, things like a little oil slick or a hole in the road.

The idea is that if you increase the surface area, you are decreasing the amount of pressure (Force divided by Area). This is all by equations^ I'm sure there are some "real world" reasons for having larger surface area... heat dissipation? Spreading out the amount force to reduce damage in one very small location? not sure.

I was going to wait till you had your weird wood issue resolved before I teased you about it.

I'm digging memories up from a class I took 8 years ago... someone chime in if I'm remembering incorrectly. The frictional forces are dependent on two factors: mass and coefficient of friction. The coefficient of friction is determined based on the interaction between your surface and tire - but is NOT dependent on the amount of surface area. The equations are Ff=uN where Ff is force of friction, u is coefficient of friction, and N is mass* gravity. When the applied force exceeds Ff, that is when you will break loose. So, there are two reasons that your heavier bike might not be breaking loose for you yet, 1. It weighs more, so the static frictional forces are higher, 2. Your coefficient of friction may be different due to different tires or surfaces that you're riding on.

This is such a thoughtful gift!!

I looked back through and found 2 more with you in them. 1 is a little fuzzy and the other one I pushed the button a second too soon, so it was almost a good picture, but not quite lol. If you want to PM me your email address, I'll send them all to you.

It's such a nice idea, and people were being so helpful... I didn't want to chime in and ruin it but yeah, I elbowed Howard and was like, "Shawn has weird wood he needs help with"

That's rough. Although I guess it could have been worse. I have a lot more pics, but those are the only ones that you were in. I'll double check to make sure. If you know anyone else that was there, let me know!

That's just... Gaw... Sounds like a good way to end up with a "weird wood" issue. Btw, I'm surprised nobody has derailed your thread yet... Weird wood. Lol

you gonna conceal and carry that pistol?

OMG! I can't even imagine, lol! hahahahha, well, I'll be sure to tell everyone "NO STRING" from now on.