Which way to adjust captain's reach?
The last few rides, I've felt that my reach to the handlbars is longer than I feel comfortable with...I'm 5'10" and it's a medium Burley Rumba with adequate standover height. My single bike, a 56 cm Trek 1000 has a more comfortable reach distance using its stock parts, and I'd like to come closer to matching it.
If I'm holding the bar tops, I see the axle quite a bit inside the bars. If I'm on the hoods, the axle is still a bit inside the bars. I don't use the drops much.
The seat is on a post with some setback and it's slightly forward of being centered over the seat bracket. This was, I think, the last year that Burley used a quill stem instead of threadless, so I have some height adjustment.
I've thought of three solutions:
#1, Move the seat farther forward, so that it's more centered over the post instead of the bracket. That would move it most of the way forward.
#2, Raise the bars...they're now just a bit below the seat level.
#3, Replace the stem, which would require a new part plus some time to remove things from one side of the bar to side it out.
If your intent is to gain the same position on the tandem as on your single, then you have to do some measuring.
The saddle for-aft adjustment is NOT to adjust the reach.
Get both your single and tandem together on a level floor.
Adjust both saddles to the same height as measured from the center of the crank spindle.
Then with a level or plumb line, measure the distance your single bike's saddle is behind the crank spindle. Move the tandem saddle for-aft to make it the same as the single bike.
Use the level to find out the height relationship of the bars and saddle on your single. Adjust the hieght of the tandem stem to match.
Measure the distance from the nose of the saddle to the center of the bars on your single and tandem. If the tandem reach is more or less than the single, note the difference and purchase the correct length stem that will make both reaches the same.
Thanks, Galen...I've tried some of what you suggested and will work at it some more. You wrote:
My idea here is that the seatpost has more setback than my single and I've made my fore-aft adjustment in relation to the clamp rather than the post. I've attached a photo (the red part is actually my son's RANS Rocket). Does this look like an more setback than usual?
Originally Posted by galen_52657
Post has a bit of setback, but that is realy irrelevant. The only measurement that matters is matching the horizontal distance the saddle is behind the crank spindle and making it the same on both bikes. I get both bikes together and us a 4' carpenter's level and a tape measure. If you already know that the post has more setback and if you know the seat tube angles of both bike, than you could get it close most likely without the level.
Originally Posted by tornadobass
I my case, I can't quite match the setback between my single and tandem because the tandem has a 73 deg. seat tube angle and the single has 72.5 deg. So, my tandem saddle is about half an inch ahead of my single. I hardly notice it.
reach usually means a new stem, not seat adjusatment. As other have said, measure, measure, measure.... A stem is about $25 if you shop. It may take a couple of stems to get it right. Is the extra $50 going to matter against comfort?