Thoughts on building up a separable frame?
Okay, this isn`t touring specific, but I know that several folks here have experience in the matter, and I feel more at home here than in other subforums, so hopefully the thread won`t get moved. Here`s what`s up:
My upcomming winter project is going to be a medium duty road bike/light tourer for 559 wheels and with demountable frame. Before I get too far into design, I need to sort out what componentry to figure on, taking packability into consideration.
Threadless? It makes sense from a convenience standpoint since it`s a little bit simpler to reassemble and it saves carrying HS wrenches. It might even be a shade lighter. On the other hand, a regular threaded steerer will be a few inches shorter and leaves me with the height adjustment that I really do use from time to time. I could do without that, but I like having it. Anybody with one type REALLY wish you had the other type for a suitcase bike?
I`m up in the air emotionally about brakes. The good points I see with straddle cable cantis are that I know them, there`s no way they are going to limit my tire sizes, and if I use the right hangers, I can instantly unhook the cable. Almost perfect. But they do stick out a ways- do ever they get in the way when you pack? Of course, it isn`t a big deal to remove them, but that`s another step and a few more pieces and bolts to keep track of. The other option that I feel tugging at my heart is long reach (47-57) sidepulls. They seem a little more compact, and they`re so sexy! It`s mostly the look that steers me towards them- I`ve never had any nice sidepulls, and this might be the bike to indulge myself on. I plan to use mostly 26 x 1.25 tires, though it would be nice to have an option for 1.5s. No fenders, so my take from reading is that they SHOULD be okay for tire fit, but that pretty much takes away any possibility of using really fat tires (which I don`t plan on, but ya never know) and I`ll probably need to use cable spliters. Any regrets from the experienced riders out there?
Crank/BB- triple for sure. I`ve used 74/110 triples with square taper BB on several bikes, so I know it and understand it, and for the most part I like the setup. But this time around I`m a little bit tempted by the new Hollowtech system. I can get a Tiagra triple for roughly the same price as Sugino or VO, and I get the feeling it might save me a few ounces. But it sounds like removing the right arm for packing might require a mallet, which would be a No-Go. Anybody know what my chances are of being able to do that sans mallet? Do you think there`s really an appreciable weight savings? Of course, I might not even need to remove them- won`t know for sure until I have the actual bike and box on hand. Apparently, they don`t need anything special as far as the frame goes, so I should be able to try it with a square taper BB and crankset borrowed from another bike, then order the fancy new stuff after I see it won`t have to be removed to go in the box. Does that sound right? FWIW, I`ll have friction shifting on the FD, so I don`t forsee any shifter compatibility problems.
Any other related thoughts or comments concerning coupled bikes or packing?
Last edited by rodar y rodar; 09-22-11 at 09:55 PM.