I have 11 speed XT on my Bullitt with like a 38 tooth ring. It’s a great group but I find myself running out of gears on the high end. I want to get a slightly bigger chainring and live in the middle of the cassette more.
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I had a 46/32 x 11-42 XT/ultegra cassette. 32 was used quite often
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For cycletrucking, I probably don’t need a gear higher than 3:1, with a 26x2.2 tire, that does about what, 22mph at 90 rpm? I rarely hit that kind of speed on my commuter!
I want to redo my longjohn as well, but I’m a little concerned about how long the arms are on 1x derailleurs, like I might make the wrong kind of scraper bike
That’s a valid concern atmo. The XT on my bullitt looks like it’s about three inches off the ground with a 26" wheel and a 1.9"ish tire.
See:
Would that clear the ground on a 20" wheel? I’m not certain.
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I had a 1x11 M7000 setup on my Lorry briefly with a 11-46 cassette and the stock crank/ring/BB and it worked fine other than being a bit noisy in the 46 probably because the chainline was less than ideal. The chainline got a little worse at the crank after electrifying it, probably because the narrowest torque sensing BB was wider than stock, so it got converted to 1x10 with an 11-42 cassette. I eventually upgraded the crank to a cheap Shimano M391 (I think) in the quest for a better chainline and longer arms, along with a Profile Racing BMX ring that has some additional offset depending on how it’s mounted. Current ring is a 38T, but I’m chasing the perfect cadence at 20 mph. It still has the stock guard installed. I posted the chainline on that setup in the ebike thread maybe?
That bike as has had M7000, M4120, and M5120 danglers on it and they’ve all worked great, other than the M4120 not having a clutch.
Dangler option worth looking at for a smol back wheel might be the M786 GS or the M640 SSW. Both will handle a 36T large cog and shift 10 or 11 with the right shifter.
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It was an M361 crank
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chainline is a valid concern, but I am guessing that the noise from the cargo part of the cycletruck would drown it out. I currently have a truck tarp folding enclosure instead of a bucket, which is quieter, but that’s a really low hurdle to clear.
Yeah, and really how often are you going to be in the 46T. For me, it was going up one short steep hill in my neighborhood and that’s it. And yet, I dithered anyway. I just hate hate hate noisy drivetrains.
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Something is rubbing on my clyde. It’s driving me nuts. I can’t get it to happen in the stand and it happens independently of pedaling so I’m thinking it’s a tire rubbing somewhere but everything looks like plenty of clearance and I can’t find rub marks anywhere. I’m gonna start by installing a slightly smaller front tire since the one on there is roached anyway. Fuckin bikes are annoying bb
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I’ve not set up a cycletruck, but the 1x on my primary trailer lugger is 11-36 and a 48t chainring (6870 dangler, generic (suntour?) cassette, wolftooth-clone oval chainring, sram fixie crank) which is barely enough to pull 80 pound loads up an 8% grade.
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that’s some intense gearing, I think that the setup I have now is like 42x30 for the low gear.
I wouldn’t mind tiny gears for getting started up hills, of which there are many in this, a city bisected by a river.
Is your Lorry still running the stock ring and cassette? If so, that’s a 40T ring and I think an 11-34 cassette.
Had I not a dumb hill to get up or not electrified it, a 36 x 11-36 with that M640 SSW dangler would probably give me enough of it and increase the kickstands options as a bonus.
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Oh dang that’s right, smaller chainring clears kickstand better. Geez the stupid problems that we all dither ourselves into…
so a 1x drivetrain with a 24t chainring and a 11-25 would let me choose any kickstand but also force me to average like 120rpm around town. tempting!
Spin to win!
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Yay! New tire solved the problem! The old tire had a bulge on it from being extremely worn out and I think the bulge was rubbing once per revolution.
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yeah I mean that’s your definition of what the bike is worth, and we can agree to disagree, no harm in it in time when NFTs are apparently a real thing people pay for.
the build is $5000 which means nothing to anyone but since you asked it’s a bike that was $3900 new, with the extra Alfine IGH upcharge and Gates belt and side panels and a dynamo. At least you’re not the person in Michigan who says “this is what they’re worth” and sends me a bike that’s listed in California as the example of what I should sell my completely different bike for
Rode the cargoMerckx on my 30km commute yesterday to take a box of curtains back to that office. I did it on the clock instead of getting it trucked. In full kit on that weird bike I got many looks from roadies.
The box does not like wind and the grips are too grippy, but pretty good for. 60km round trip. Took me 20min longer than normal in each direction, about the same as when I commute in the snow.
People wiggle around me at lights more, too. So I had to pass a bunch of hybrids up hills to make a point. I’m slower than me, but still faster than them.
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I think we concluded “maybe with huge stem and seatpost”
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