RoadBikeReview.com's Forum Archives - Components


Archive Home >> Components(1 2 3 4 5 6 7 8 9 10 )


Rolf Vector Pros - Creaking when climbing(7 posts)

Rolf Vector Pros - Creaking when climbingKruser
Oct 3, 2001 9:58 AM
Lots of hills here in the Bay Area. Have had the Pros for 6 months and whenever climbing, in the 19-21-23 cogs, there was lots of creaking in the rear wheel. Lubed, loosened then re-tightened everythig to no avail.. The CREAKING STOPPED when I switched to a 12-25 cogset but went with Ultegra rather than D.Ace (less $$ - unemployed dotgoner). I noticed the D.Ace cogset had bit into the freewheel flukes (?) when I removed it and this leads me to believe the creaking was a result of either excessive flex (titanium) or bad tolerances on the D.Ace cogset. I had to pry the bastard off with a screwdriver. Whatever the case, the creaking stopped......for now. Any thoughts??
re: Rolf Vector Pros - Creaking when climbinggrzy
Oct 3, 2001 10:45 AM
When metal starts to yield and get deformed nothing good can happen. Sounds like you've isolated it to the DA cog set where durability is compromised for weight. Are you using the newer hub body design or still running individual cag style? The cast and machined spider distributes the load over a wider area and comes from the MTB world where people know a lot about trashing high end stuff due to the higher leverage that a granny gear provides.
re: Rolf Vector Pros - Creaking when climbingKruser
Oct 3, 2001 12:35 PM
Thanks for the note.

Great question and a very good point re: spider/MTB influence. A: In this case I am still using the newer design / ind. cogs.

At the very least its nice not to have that noise any longer!

Cheers
re: Rolf Vector Pros - Creaking when climbingcyclequip
Oct 4, 2001 5:49 AM
All the D/A cassettes I've seen have the bottom 3 cogs joined (19-21-23), then the mid 2 joined and the top 4 loose. When you say you had to pry the cassette off, it sounds like either incorrect assembly on the splines, or no-one greased the body before installing the cassette. Both will cause creaking rather than any supposed flexibility or softness in the titanium.
re: Rolf Vector Pros - Creaking when climbinggrzy
Oct 4, 2001 1:59 PM
Well grease isn't going to over come the fact that the metal is yielding and that things aren't supposed to be moving in the first place. Another thing to investigate is that sometimes a spacer may be required to keep the entire cog set tight on the body. Fact is the ti stuff doesn't last that long - especially if you hammer and are a large humanoid.
re: Rolf Vector Pros - Creaking when climbingcyclequip
Oct 5, 2001 5:27 AM
We could get into a discussion about 'hydraulic wedges' and the suchlike, but I'll defer to your wisdom. The carriers are aluminium anyway, and this is where the problem lies, not with the Ti sprockets. Actually, nothing lasts if you hammer and are a large humanoid.
re: Rolf Vector Pros - Creaking when climbingKruser
Oct 4, 2001 8:02 PM
Good points but I'm absolutely sure it was installed correctly. You could be onto something re: not enough grease and the creaking (there was a light coating) but grease couldn't possibly have prevented the cogset from biting into the splines. Good point here is that my motivation for changing the cogset was due to my affinity for the hills (and their unavoidability) here in Marin Co., CA. I'm 6'1", 185lbs and my suspicion is something was awry with this particular DA cogset and the Rolf combo (I haven't had this prob. before using other DA cogsets and wheels). Thanks for your insight!