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Discussion Starter · #1 ·
Yeah, thats right I ran a 34 x 4 today, but not by choice! I statrted with 34 x 17, but ended up leaving a little trail of teeth in my wake.

Basically this is all that is left from a 17t cog taken from an old cassette. For some reason the 16t and the 18t cogs that I got with my Gussett kit claimed 3/32-in chains would fit, which turned out to not be true. So when I installed the Gussett cogs the chain would ride out on the teeth tips every so often. In a pinch, I slipped in the 17t cog and things worked well for about 120-miles. Then today I started slipping.

Slipping and slipping, til I got home riding 4 teeth in the rear! And here are the pcitures.

FWIW, I just installed an 1/8-in chain on the 18t Gussett cog and things worked out well on the test spin. Now, I hope that proves compatible with the 34t FSA Chain Ring up front. !
 

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Timo said:
Yeah, thats right I ran a 34 x 4 today, but not by choice! I statrted with 34 x 17, but ended up leaving a little trail of teeth in my wake.

Basically this is all that is left from a 17t cog taken from an old cassette. For some reason the 16t and the 18t cogs that I got with my Gussett kit claimed 3/32-in chains would fit, which turned out to not be true. So when I installed the Gussett cogs the chain would ride out on the teeth tips every so often. In a pinch, I slipped in the 17t cog and things worked well for about 120-miles. Then today I started slipping.

Slipping and slipping, til I got home riding 4 teeth in the rear! And here are the pcitures.

FWIW, I just installed an 1/8-in chain on the 18t Gussett cog and things worked out well on the test spin. Now, I hope that proves compatible with the 34t FSA Chain Ring up front. !
I suspect your 3/32 chain was worn out, concentrating force on each cog tooth one at a time.
 

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Doh!

4 teeth; that cog qualifies to be on cops wearing a wife beater :D That must have been a tough trip home with all that slipage.
 

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Discussion Starter · #5 ·
pacman said:
I suspect your 3/32 chain was worn out, concentrating force on each cog tooth one at a time.
Chain was brand new....and now has 120 miles on it, plus the abuse it took in the last 6-7 miles to get back home.
 

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Discussion Starter · #6 ·
Sparticus said:
You're stronger than I am! :eek:

--Sparty
Well the metal had weakened significantly in the cog. Really, each little slip sounded like what all have heard from a worn cassette or cog in the rear. I just had no idea I was pulling teeth off until I got home.
 

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Discussion Starter · #7 ·
slowrider said:
4 teeth; that cog qualifies to be on cops wearing a wife beater :D That must have been a tough trip home with all that slipage.
Wasn't too bad - after I realized it was time to quit. I met some buddies for a night ride and had some intermittant slips initially. We hooked up some short sections of singletrack and climbed to a decent elevation.....then we turned on one section that was much steeper and the popping really took from there.....that is when the damage was evident.

So it was downhill for 15-20 mins to a paved bike path - flat as a pancake, then a 2 block gradual climb to my place.
 

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I also have the Gusset kit and my 3/32" chain wouldn't fit either.

turns out there's a slight difference in width between a 3/32" 8-speed and 3/32" 9-speed chain. my sram pc-59 was too narrow to fit very well.

i bought a kmc 3/32" bmx chain and it fits the gusset cogs just fine.
 

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Discussion Starter · #9 ·
mcfly said:
I also have the Gusset kit and my 3/32" chain wouldn't fit either.

turns out there's a slight difference in width between a 3/32" 8-speed and 3/32" 9-speed chain. my sram pc-59 was too narrow to fit very well.

i bought a kmc 3/32" bmx chain and it fits the gusset cogs just fine.
I had only tried a new SRAM 8-Speed Chain, which didn't either with the Gusset. I put the 16t cog from Gussett next to a Shimano DX 16t cog and the difference at the cogs teeth were pretty significant. The DX teeth are tapered on both sides, and thus thinner in width than the Gusset.
 
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