1st Time Throwing a Timing Chain…

Here’s a strange…

We finally had nice weather and some free time this afternoon so we took advantage of both and got in a much-needed tandem ride.  Sadly, traffic continues to increase on weekends so a “low stress” road ride is no longer possible.  But, I put my best foot forward since Miss Debbie prefers to ride on the road vs. off-road, and we had a go.

It was an OK ride, noting that we ran into road construction twice… on a Sunday. Really? But, what really threw me for a loop was having the timing chain come off as we were “just riding along”.   That’s something that has never happened to us before and as I put the chain back on I couldn’t figure out what caused it.

  • The chain had the normal amount of pre-load, which is to say just enough to allow me to roll it on and off the chain rings without loosening the eccentric.
  • The timing rings looked fine; no broken or deformed teeth.
  • The chain itself appeared to be OK
  • The frame couplers were tight, so no frame issues to speak of.

With the chain back on the bike we continued on our way. Well, son-of-a-gun if that darn timing chain didn’t come off a second and then a third time.  The third time around I finally discovered the likely culprit: a chain rivet that had pulled out of an outer chain plate.

We nursed the bike back to the house where I pulled the chain and then re-set the rivet.  With any luck, it will stay seated, but I’ll be darned if I know how it came apart in the first place, other than being “just one of those things.”

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About TG

I've been around a bit and done a few things, have a couple kids and a few grandkids. I tend to be curmudgeonly, matter-of-fact and not predisposed to self-serving chit-chat. Thankfully, my wife's as nice as can be otherwise we'd have no friends. My interests are somewhat eclectic, but whose aren't?
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