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Old 06-09-11 | 11:53 AM
  #6  
akexpress
Senior Member
 
Joined: Nov 2007
Posts: 620
Likes: 7
From: Anchorage, Ak

Bikes: 2015 Calfee Tetra tandem,2016 Calfee Tetra Adventure Tandem, Ventana ECDM 26 mtn tandem, Ventana ECDM 29r full suspension Mtn tandem ,Ventana Fat tire tandem, Calfee Dragon Fly, Santa Cruz Carbon 5010, 907 Whiteout fat tire

Thanks for all the advice. We spent about two hours going thru the drivetrain. It was the first time in the stand for me to look at it. It had been put together with a 52/44/30 and mixture of shimano and TA chainrings, two alloy and one stainless (???). Because of this the derailleur was mounted very high and the inner cage hit the middle chainring. In addition they had mounted a K-edge in such a way that it hit the cage also. I was very surprised that a high end company would do such a poor job. the bike is spectacular but their execution of the build was not well done. I replaced the large and middle rings with shimano 53/39 and positioned the derailleur and K-edge correctly and now it shifts great. Also the chain was too long and had a weird cable run to the rear derailleur that with some creative modifications I got to enable a clean run. this bike has a very long chain and has to idlers to keep chain bounce to a minimum, one of the brackets for the idler was in the way of the rear cable so I was able to drill a hole in the bracket for the cable to run through and make a clean run. Again thanks for all the advice.
Mark
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