Good point. May need to use a flat head screw that can be countersunk to make a flush fit with the inside of the big ring. Wouldn't be a good project if it didn't grow in complexity.
Maybe the wood block isn't so bad after all. Just looks kinda kluggee. dougP -----Original Message----- From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Andy M-S Sent: Wednesday, October 15, 2008 3:24 PM To: Bicycle Lifestyle Subject: {BL} Re: chain of fools? That may not work. The pin is riveted to the large chainring, so there's nothing sticking out of the back to cause problems with the middle ring. Attaching a screw would likely leave the screw head in a position to foul the chain when I'm on the 36. I might look a this, though. I was quite surprised at just how large the gap was...but I suspect you're right, this crank was designed in the 7-speed days, and 9-speed chain is a good bit narrower. On Oct 15, 5:13 pm, "Doug Peterson" <[EMAIL PROTECTED]> wrote: > You just gave me an idea. Remove the pin & replace it with a small screw, > similar diameter, that's long enough to fill the gap between the chain ring > to the crank arm. > > The pin is actually functional if it keeps the chain from wedging in the > crank arm. In your description, the problem is the narrow 9 speed chain > getting past the pin. Lengthen the pin to reduce the space to less than the > chain thickness & problem solved. > > Hey, it only took a couple of people a half a day to figure this one out! > Now on to cold fusion. > > dougP > > -----Original Message----- > From: [email protected] > > [mailto:[EMAIL PROTECTED] On Behalf Of Andy M-S > Sent: Wednesday, October 15, 2008 2:04 PM > To: Bicycle Lifestyle > Subject: {BL} Re: chain of fools? > > Hmmm. The problem really is just the fact that there is a pin there > at all...I wonder--if I Dremeled out the fastener and removed it > completely, mightn't I be better off? > > On Oct 15, 11:49 am, "Doug Peterson" <[EMAIL PROTECTED]> wrote: > > It's not a very elegant solution but you can whittle a piece of wood to > > wedge in between the crank arm & chain ring. I've done this with generic > > replacement rings that don't have the pin. > > > As to proper adjustment & overshifting, hey, it happens to us all. It's > > just that Fate couldn't resist when you were wearing a suit. At least she > > waited until after you'd done your presentation! > > > dougP > > > -----Original Message----- > > From: [email protected] > > > [mailto:[EMAIL PROTECTED] On Behalf Of Andy M-S > > Sent: Wednesday, October 15, 2008 3:30 AM > > To: Bicycle Lifestyle > > Subject: {BL} chain of fools? > > > This has only happened a couple of times, but it's a royal pain. > > > I have a Sugino XD crankset (48-36-26), and two or three times I've > > overshifted so that the chain falls off the outside of the big ring. > > Normally, this should be no big deal because the large pin on the > > outside of the big ring, behind the crank arm stops the chain from > > wedging into the crank, and you can work it back on by correcting the > > shifter slightly.. FWIW, I'm running either a Shimano or SRM 9-speed > > chain. > > > In my case, however, it appears that the pin is too short, with the > > result that the chain drops *past* the pin and, while it doesn't wedge > > into the crank, it gets tensioned against the *inside* of the pin. > > This makes it difficult to work the chain over to the side far enough > > to slide it back past the pin and remount it, and it's a dirty, messy > > job. > > > This hadn't happened to me for many months, but yesterday, coming back > > from a presentation (in suit and tie), I had to dismount and deal with > > this rather messy procedure. > > > Does anyone know of a way to put a collar or something on that pin so > > that I don't run into this problem? I know the right answer is to > > adjust my front derailer so that this never happens, but sometimes the > > first warning of trouble is this mess, and I'd like to avoid that in > > particular. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Bicycle Lifestyle" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/bicyclelifestyle?hl=en -~----------~----~----~----~------~----~------~--~---
