Originally Posted by
RoadJerk
I'll have to see how things go once I get some proper lube (is WD40 ok?), but im sure the bolts arent bottoming out on themselves, cause they are threaded the whole length of the shaft. When I tighten the bolts, im sure its tight against the 'ring, cuase theres no play or slippage between the ring and crank. After they come loose, then the ring and crank start to seperate and its just the bolts themselves providing the torque, not the contact of friction between the ring and crank.
WD-40 is not okay its not a lubricant no matter how bad it wants to be.
so is the chainring/spider threaded or is it a nut and a bolt? I've been assuming a nut and bolt
Thinking about it more and more I'm thinking theres a bigger problem than lubricant at play here, the first step if your really serious about keeping the crank would be to go see if you can find the right bolts for it, while your at the lbs if they don't carry them they might be willing to look it over, it could be somthing really obvious when in hand. (at least to a pro)
Based on the age of that crank it may be best to just get a new one, the correct bolts may be difficult to find (unless I'm overestimating that cranks age due to the design)