[RBW] Re: another downside to carbon fiber bikes?
On Mar 22, 7:19 pm, Tim McNamara wrote: > On Mar 22, 2010, at 4:53 PM, Christopher Paul wrote: > > > I am riding steel and titanium bikes now with long wheel bases and > > feel more secure. My friends accident made me wonder, would she have > > lost control had she been riding a non carbon fiber bike? Have there > > been any studies on this? I don't think its just my imagination that > > carbon fiber bikes have a greater propensity for losing control than > > non carbon fiber bikes. Does anyone have any thoughts on this? > > Long wheelbases are more stable. I think that's the key here, not > the frame material. Racing bike with short rake and steep head > angle, putting the front wheel closer to the rider's center of > gravity. And maybe other issues, such as position on the bike. Wow, the paranoia is spreading like wild fire. I agree with Tim, there are many other factors to look at besides frame material. For example, what size tires and psi is your friend riding? If she is riding 700x18 or 20 tires pumped up to 150psi and then hits that pothole, its going to do more for her to lose control than the carbon fiber frame. In contrast, I was riding my carbon Calfee with kestrel carbon fork (bought frameset USED 13 years ago) on Saturday and a car cut in front of me, without signaling, causing me to slam on my brakes. I was able to slow down just enough that my front tire "touched" the rear bump as the person was turning right. I went down scraping my knee. When I looked up the driver was still going along slowly, totally oblivious to what had happened. My bike was fine. On Sunday, I went out again and rode up Old La Honda road. On the descent down, I took it easy hitting only about 35mph with no problem and total control of my bike. -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To post to this group, send email to rbw-owners-bu...@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en.
Re: [RBW] Re: another downside to carbon fiber bikes?
i have to comment on this. my rivendell( 59cm roadeo) has a very short distance from the "bb" to the front axle, actually shorter than many "mcrb's". as a result, i suffer from "tco". i don't care. the ride and handling are superb. designing a bike that handles just right is an art( and there are tradeoffs). don c. On Mar 22, 2010, at 7:19 PM, Tim McNamara wrote: > > On Mar 22, 2010, at 4:53 PM, Christopher Paul wrote: > >> I am riding steel and titanium bikes now with long wheel bases and >> feel more secure. My friends accident made me wonder, would she have >> lost control had she been riding a non carbon fiber bike? Have there >> been any studies on this? I don't think its just my imagination that >> carbon fiber bikes have a greater propensity for losing control than >> non carbon fiber bikes. Does anyone have any thoughts on this? > > Long wheelbases are more stable. I think that's the key here, not the frame > material. Racing bike with short rake and steep head angle, putting the > front wheel closer to the rider's center of gravity. And maybe other issues, > such as position on the bike. > > -- > You received this message because you are subscribed to the Google Groups > "RBW Owners Bunch" group. > To post to this group, send email to rbw-owners-bu...@googlegroups.com. > To unsubscribe from this group, send email to > rbw-owners-bunch+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/rbw-owners-bunch?hl=en. > -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To post to this group, send email to rbw-owners-bu...@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en.
[RBW] Re: another downside to carbon fiber bikes?
On Mar 22, 2010, at 4:53 PM, Christopher Paul wrote: I am riding steel and titanium bikes now with long wheel bases and feel more secure. My friends accident made me wonder, would she have lost control had she been riding a non carbon fiber bike? Have there been any studies on this? I don't think its just my imagination that carbon fiber bikes have a greater propensity for losing control than non carbon fiber bikes. Does anyone have any thoughts on this? Long wheelbases are more stable. I think that's the key here, not the frame material. Racing bike with short rake and steep head angle, putting the front wheel closer to the rider's center of gravity. And maybe other issues, such as position on the bike. -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To post to this group, send email to rbw-owners-bu...@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en.
[RBW] Re: another downside to carbon fiber bikes?
Doubt that material has much to do with severity of injury / crash propensity. Too many other variables. Recently I saw a guy pulled over, sitting next to his bike. I stopped to see if he needed help. Problem was his carbon stem had snapped. The bike was un-ridable but he hadn't crashed & wasn't hurt. I can't imagine how he maintained control to stop. The other side of he coin is an incident years ago (in the age before carbon). A friend dis-located a shoulder & misc related damage when the aluminum handlebars on his steel framed bike broke off cleanly at the stem. He was just standing up on a modest climb, no severe jolt, pothole or other input. Go figure. dougP On Mar 22, 6:12 pm, Brad Gantt wrote: > I think the sensations you describe are subjective so it doesn't make > too much sense to argue there. The steepness of the bicycle's head > tube, seat height, TT length, body positioning, BB height, fork rake, > tire choice (including inflation) as well as stem length and hand/bar > position will have profoundly more effect in the situation described > than will material. Of course, I'm not an engineer. :) -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To post to this group, send email to rbw-owners-bu...@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en.
[RBW] Re: another downside to carbon fiber bikes?
I think the sensations you describe are subjective so it doesn't make too much sense to argue there. The steepness of the bicycle's head tube, seat height, TT length, body positioning, BB height, fork rake, tire choice (including inflation) as well as stem length and hand/bar position will have profoundly more effect in the situation described than will material. Of course, I'm not an engineer. :) -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To post to this group, send email to rbw-owners-bu...@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en.
Re: [RBW] Re: another downside to carbon fiber bikes?
I don't know about that. Consider running over a pothole, -not a pleasant experience no matter what you are riding. The thud from a carbon fiber feels sharper, where as with steel I feel more "rattled". On Mon, Mar 22, 2010 at 4:42 PM, Brad Gantt wrote: > That's too bad. Glad it wasn't worse though. Accidents like this are a > function of geometry, body position, speed, stopping force and a bunch > of other math. It is not a function of material, however. > > -- > You received this message because you are subscribed to the Google Groups > "RBW Owners Bunch" group. > To post to this group, send email to rbw-owners-bu...@googlegroups.com. > To unsubscribe from this group, send email to > rbw-owners-bunch+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/rbw-owners-bunch?hl=en. > > -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To post to this group, send email to rbw-owners-bu...@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en.
[RBW] Re: another downside to carbon fiber bikes?
That's too bad. Glad it wasn't worse though. Accidents like this are a function of geometry, body position, speed, stopping force and a bunch of other math. It is not a function of material, however. -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To post to this group, send email to rbw-owners-bu...@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en.
