Rolf Prima Vigor Creak?
Hi, I have a pair of the Rolf Prima Vigor Tandem wheels on my Co-Motion Co Pilot. My riding partner and I are doing the Lotoja Bike Classic this year. We went out for a 120 mile ride last weekend and developed a creak in the rear hub. Listening to this creak for 206 miles is going to drive us nuts.
I pulled the rear hub apart when I got home and noticed that the pawls in the free hub body were bone dry. I put a couple of drops of T-9 oil on the pawls, greased the axle shaft, slid it all back together and thought I was good to go. We did another 160 miles over this last weekend. The bike initially was super quiet and then the creak came back with a vengance. We expecially notice the creak under power whether we are seated or standing. I took the rear hub apart again and noticed that one of the cassette bearings now had a "gritty" feel to it. I am going to replace that this week. The rest of the bearings are like butter. There does not seem to be excessive wear in the axle itself. The creak is almost rythmic. It doesn't matter if the left or right foot is in the power postion. I really don't think the chain is involved. It is a Sram Chain on Shimano 10 spd. The chain has been fine for the last 400 miles. The creak sounds like it is from the rear hub.
I recently (400 miles ago) replaced the chain and installed a new cog set. A local bike shop suggested a while ago for a seperate creak that I put some grease on the rear drop out, QR interface. I have also recently made sure that the S+S couplers were teflon lubed and tight.
My question is this. Has anyone else developed a creak in their rear hub using Rolf Prima Vigor Tandem Hubs? What did you do to silence the demons? Is there anything thing else that I am not thinking of that I should try?
I weigh around 158 and my riding partner is around 125.
I appreciate all and any thoughts except, not doing the race and eating ice cream instead.
Creaks source can be deceptive. On our bike creaks felt to be crank related turned out to be from
the stokers HB/stem connex to the pilot seat post. You may be chasing something other than the
wheel. You might carefully eyeball the spoke/rim interface for subtle cracks in the rim from spoke
pull through. We had that problem as well on our Rolfs, at about 4000mi or so.
Thanks for your thoughts. I will know this weekend when we go out for a ride. Here is what I found out. After reading the Rolf Manual online, they recommended using a couple of drops of oil to the pawls in the free hub body. I did so. After that is when I started hearing the creak. I called Rolf and they mentioned that they have been meaning to rewrite the manual for a while. What they are suggesting is that I use a heavier grease on the pawls. Not too heavy or the pawls won't open and close quickly enough. They suggested a marine engine lube. I found something similar. They thought that regular oil is too thin and when heated up during a ride can just leak out of the free hub body.
I will closely examine the rear hub and the stoker stem / capt seat post interface as well. After the ride I will post my findings.
FYI, I took the tandem out for a 35 mile hammer fest on a group ride and the creak is gone. I will know for sure tomorrow when I get in my final long ride before Lotoja. I think that I located the source of the creak. Putting the heavier lube/grease in the freehub body did the trick.
Our rear hub had a creak also, a very loud one at that. On the drive, the axle has a end cap that is an interference fit that came loose, causing the bearing pre-load to fall out of spec. The fix was to remove the cap, which was quite easy, clean and use a loctite stud/bearing compound during reassembly of the axle. Noise is still absent 1yr. later.
Thanks for the info. Right now our creak is gone. We did a 100 last weekend and all was quiet. I took the hub apart and again used the heavier grease inside the free hub body in prep for the Lotoja race this upcoming weekend. I will keep your suggestion in mind should the creak come back.