marathon quickbeam clearance, originally uploaded by BikeTinker.
Some cropping might be in order for this picture… the picture part is in the bottom fifth.
This is the maximum size I’m willing to run on a Quickbeam – “47mm” (41) Marathon. It works in all three gears (44t ring, 15, 17, 21 cogs), but only if nothing goes wrong. There’s plenty of clearance at the brake bridge and the fork. By “plenty,” I mean “more than here, but I wouldn’t want to run anything bigger.”
I’m about to roll the setup back to Darktime Commuter, with fenders, dynohub, basket and narrower tires. *sigh* I really think the naked Quickbeam is Bad Ass.
Fenders keep the chain much much much cleaner. That’s putting it mildly. Fenders keep the chain clean; no fenders filth it up right away if you ride on dirt.
marathon quickbeam clearance, originally uploaded by BikeTinker.
You and your multi-personality Quickbeam are an inspiration, and I enjoy watching to see what it will look like next. I am “this close” to selling all my other bikes and setting up about 3 or 4 wheetsets, chains, and cogs to cover my intended uses. And yes, your QB does look fantastic without fenders.
I should trade you some wheelsets for one of your bikes…
If you do go the multi-wheelset route, it makes things much easier if the rims are all the same width. Cyclotourist recommended the Velocity A23 as a nice new wider rim, and Riv has a ton of Twin Hollows for $25 each, if you want to set yourself up for the future.
I have a simple one that is hands down my favorite bike. No explanation for it other than it just always feels right and does everything very well. Currently having a wheel with a duomatic hub built. Looking forward to the experiment. I was curious how you got three cogs and how do you shift? Thanks Casey