Drew and Fellow Riv Builders,
I'm loving this thread! I think building a well-curated bike is a big challenge, but also an extremely satisfying one! And as such, I definitely fall into the "spend so much time planning builds that it feels like an artistic or [philosophical] exercise" bucket.
Viewer Audience Philosophically, I think a well executed build should offer something new and uniquely interestingly, while also offering a clear vision for the utility of the bike. Ideally, the build should not only grab enough of the viewer's interest that they want to ride it on some level, but also envision exactly how they would ride it. Thinking about who your intended viewer is can help you formulate your build's goals; maybe it is as narrowly defined as just you, or, more broadly, to a specific group, like this one. Trying to make your "viewer" audience too broad is likely going to get you something mass-produced and/or lead to frustration.
Anyways, here are my four design heuristics:
- Theme I believe every bike build needs to have one: it can be something as simple as "let the frame speak for itself with a classic look" to building around a specific part/component to a very specific colorway like "I want to go full Rasta-themed" Eitherway you need some theme to provide a direction your build is gonna go in, otherwise you are likely to get lost. And unless you're planning on repainting your frame, likely the theme needs to take into account the current frame colorway.
- The Big Four After the frame, the parts that are going to offer the biggest areas for impact are the tires/rims, handlebars, cranks, and saddle. You can either choose to downplay or highlight these areas, but if you do highlight anyone of them, it's going to have a big impact on the overall aesthetic so in general careful consideration is required. As Ted pointed out, matching handlebars to saddle is an easy way to get harmony here, but its not the only way and I definitely think there is ways to have multicolored handlebars and such. But since these components physically dominate, it's easy to disrupt the harmony of the build here. It's not just about looking at a colorwheel (although that is definitely your friend!) and choosing complimentary colors. Finding harmony in the complete bike is key and their is no single correct way to do that. And don't limit it to just color; texture/structure will have a big impact too: knobby vs smooth tires, fenders and their texture, cloth vs leather vs rubber handlebar wraps, crank arm thickness and whether its a 1x, 2x, or 3x all have big impacts here and should be taken into consideration. (I've never done it myself, but I do think you could get black and earthtones on a saddle/handlebar combo to work, but it's definitely trickier and requires special care to get right in my opinion)
- Small Parts After the big four components, I find the smaller components a much easier and fun way to accent things without breaking up the harmony of the build too much. Things like getting colorful jockey wheels, crankbolts, waterbottle bolts, tubeless stems, spoke nipples, brake hangers, cable housing, etc. You can probably still overdo it here, especially if you do that entire list, but it's much harder to. And I find it a lot more fun and interesting than just choosing a bold handlebar wrap or something. It just makes the bike feel much more considered and interesting to the viewer. And bonus is that small parts tend to be much more inexpensive, giving you more bang for your buck and not making you later regret that super-expensive component that just doesn't work with anything now. (I really value builds that intentionally use colored cable housing in a way to adds interest, it's so easy to do but is often overlooked!)
- Make it unique Which leads me into my final design heuristic: You need something to make your build interesting! Unless you are trying to do an absolutely faithful reproduction of an Alex Singer, add something personal to the build that makes it your bike. And to me at least, it needs to be really incorporated into the bike, so I'm not talking bags, bar tape, stickers, or waterbottles. Those are important to consider, yes, but their implied impermanence doesn't make them feel like they're completely part of the build. Ideally, this should tye back into my first point about having a theme, but even if you theme is simply "let the frame speak for itself with a classic look" you still should have something that really makes it your own. Don't be afraid to be a little controversial here! And obviously you aren't limited to one unique thing, but also keep in mind that the more "unique" you make your bike less likely it will satisfy a broader viewer audience.
Executing: Again, I find this all to be a big challenge and I never get it right on the first shot. It's easy to plan it all out on paper (or a spreadsheet) and put it together to only realize that it doesn't quite all harmonize together. So, unless you have unlimited funds to spend at Blue Lug, I suggest starting small with the main goals of the build in mind and work from there. Build it up with parts you have on hand as much as possible and make sure the main components are working well together to achieve your theme. This gives you some leeway to course correct without going to far down the rabbit hole. And then stare at it and figure out what works and what you want to improve upon next. My preferable way to do this is to go on a ride, stop and sit outside at a cafe or something, with your beverage of choice and/or snack, and put the bike somewhere in your field of view. Usually it is the unconscious part of the mind that will pick up on what needs fixing aesthetically and I find this is a great way to let it do its work.
Stable theme: Almost everything about the philosophy can also be applied at the stable level. So, if you do have a stable of multiple bikes, finding a theme that incorporates your whole stable together while keeping the individuality of each bike is fun to do. Ideally the goal here is have the viewer look at any one bike build and be able to recognize the owner in it. For me, I have a few things I always try to include in my builds: Special/limited edition saddles, MKS Bubbly pedals, Blue Lug mini reflectors, Oury grips, and the very recent addition of Ghooost twist flowers. Not all of those things make it onto all my bikes, but it's a loose thread that ties things together, while still being customizable themselves to harmonize with whatever build I am doing. My sort of anti-thread to my stable is that I strive to have a different method of drivetrain/shifting on each bike so that no 2 bikes have the same one. Sort of hard to do as I grown to love 3x9 drivetrains more and more :) I also strive to have each bike have its own main colorway, which given the nearly infinite options of combos should be pretty easy to achieve. I think Leah and Bill Lindsay both have loose themes going on in their stables and are good examples of this!
Final musings: Bike building is alot like writing: the theme is your thesis and editing is usually the hardest part, requiring multiple iterations to get correct. And much like writing, studying others work will improve you're own work, so study custom builders, Riv employees bikes, Blue Lug, Radavist, and, obviously, this group! Doing it in person is 1000x better, so go visit with other bike enthusiasts. Maybe ask them what the one thing they would change about your build; get feedback!* Find those things that inspire you to want to do that. Finding your "voice" and communicating the bike's intention in the clearest way will lead to the most satisfying and successful builds. And it should go without saying, but don't sacrifice form over function; something may look really great on the build (like handlebars, but could be anything), but if it isn't working for your riding style it's never worth it. And, relatedly, the most important thing is to just ride. You don't need to do any of this, it's just a fun/silly distraction for when you aren't/can't ride. Just don't let it get in the way of riding. (This is as much as a reminder to myself than anything :) There is much, much more one can and should consider, but this post is already probably too long!
*But don't do this in reverse; never provide unsolicited feedback about someone else's build. And keep in mind, even when asked to provide feedback, be gentle. This is a personal expression of someone's taste we are talking about. But honest and constructive feedback can be extremely valuable to those ready to accept it.
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Here are some of the themes I've built my bikes around in the format of "bike frame" | "frame color" | "build design notes":
- Riv Hunq | Kidney/Grey | Designed around red and black "Inferno" Kooka cranks and special edition Analog x Waxwing "Keepaw" bag in matching Kidney/Grey; Red 700c GK tires were just finally added this year and really complete this build to me. This bike has gone thru the most iterations for me with the theme changing multiple times.
- Riv Bombadil | Black/Cream | Oddmone riser bars in clear black with brazed bronze accents led to a black and brass/bronze theme; component that ties it all together for me is the brass Shovel Research brass front brake cable hanger. This my lastest build and perhaps smoothest in terms of execution?
- Riv Roadeo | Orange/Cream | My "let the frame speak for itself with a classic look" build. Things that make it mine are the refurbished Mafac centerpulls with a blue Paul Funky Monkey hanger, as well as the Shimano 105 STI shifters that I put gum hoods on. This is my oldest build and probably in need of some minor refreshing.
- Riv Rambouillet | Candied Forest Green/Cream | This was built around the Huret Ecopar RD with the idea it was to be a rinko bike. Brown leather sewn-up handlebar wraps make it feel truly one-of-a-kind.
- Crust Disc-brake Lightening Bolt | Brown clear coat with fillet brass accents | Steerer was threaded to make this probably the only 1" threaded LB out there. Then built up around an Analog Cycles Fingerling stem in clear Cerakote and White Industries G25A rims that I personally removed the anodizing and made into probably the only polished silver version of these (they are now discontinued). Feels almost custom at this point.
- Crust Romanceur v2 | "Puke" Greenish-yellow/Cream | Built around Red UD Mars 26"ers tires and a NOS 27.2 Easton dropper in gold finish. Rest of build is mostly muted earth tones. To me, not my most beautiful build, but my most interesting one: it's probably my most personal build.
- Ahearne Custom | Chartreuse Green clear coat with fillet brass accents | Custom bike frames are already, well, custom! But you should still have a bit of fun :) I have a few small purple Paul Components (and others) bits to compliment the chartreuse I chose for the frame. But again, mostly letting the frame speak for itself.