Originally Posted by
ksteinke
Hello All,
While surfing the internet about a year ago, I ordered one of these chainess bikes from Dynamic. I paid the extra airfreight to get it shipped to me in Switzerland and then had it europeanized with hub based lighting, built in locks, fenders and a rack.
I really like the idea of the bike. I ride to and from work in all weather along a flat lakefront path 5km each way.
In other posts I've read that the shaft can't take the kind of tork chained bikes can. I believe this. I only have to climb one small hill on the way home but often I hear CRUNCH, CRUNCH while climbing the hill.
The only thing I've tried is to put grease in as instructed. I read about "once a year or perhaps once a month". I'm 6 ft 1 and 220 lbs. My conclusion is that this bike can't handle the weight. It's started to crunch a lot more recently. I guess it will die soon. It's a real shame. Then the question is to order another shaft or to just junk the bike.
Perhaps this is a great bike but I have to loose 40 lbs and get a new shaft before I can use it?
Too bad. It seems that the shaft mechanism in these bikes is not too well engineered and probably does not use good enough materials, adequately heat treated. The ring and pinon gears in an automotive rear end are one of the most reliable parts of a car normally and seem to last indefinitely. To me the same should be true of a bicycle drive shaft mechanism too. This certainly does not seem to be the case with the current generation of Taiwanese manufactured units.
It may be cleaner than a unprotected chain but if it does not outlast a chain or cogged belt drive for a geared hub then what is the point. Looks to me like you are gaining added weight, unreliability and lower efficiency for cleanliness and no danger of pants being caught in the drive. Not the best trade off IMO. A chain or belt with a guard seems cheaper and more reliable.
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Gear Hubs Owned: Rohloff disc brake, SRAM iM9 disc brake, SRAM P5 freewheel, Sachs Torpedo 3 speed freewheel, NuVinci CVT, Shimano Alfine SG S-501, Sturmey Archer S5-2 Alloy. Other: 83 Colnago Super Record, Univega Via De Oro
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