Originally Posted by
Bill G
The key thing here is get your knee position correct by dropping a plum bob from just under knee cap to peddle spindle at the 3 o clock position the plum bob line should fall center of peddle spindle or slightly behind center a few mm with your but in the proper rideing position on your saddle, I like behind a few mm myself (look on the web for pictures & procedure or the Link below of how to exactly do this correctly and where to put string under knee cap in relation to peddle spindle) When this has been done correctly first then you adjust the stem shorter or longer more or less spacers, what ever is needed here to get your reach right.(NOTE) If you are only adjusting the saddle forward or back without the knee geometry to peddle spindle being right first everything will be wrong..
Link below to a good bike fit procedure...The colorado Cyclist link to bike fit below is real good and explains everything well
http://www.coloradocyclist.com/bikefit/#kneeposition
http://www.jimlangley.net/crank/bikefit.html
Ride Safe,
Bill G
Thank you, i should have clarified, i had a full bike fit on the single about a year ago( 3-4 hours of measure adjust measure adjust) and find it comfortable so i am trying to duplicate the measurements from the single onto the tandem. One big difference is that the single has a setback seatpost so all said and done the bb to seat setback is still off about 5mm but as close as it will get without a different seatpost (which will infringe in stoker space)
Got home late this evening so i did not have an opportunity to lower the stem and test it out but plan on doing it tuesday.