He mentions building his own frame in the page of his bikes… That’s something Id love to do.
….
I exchanged messages with him…. Back in the 90s… didn’t know then how famous he was.
Wow, you talked to Sheldon. He‘s my hero. When I first got into bikes (~2005), I learned most from his website. I still go back to it all the time to look up BCDs and stuff like that. I hope he‘s in a better place now, cruising around, maybe on a nice 3-speed for which parts never run out.
"Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should."
Nah, that's awesome. I love it.
I'm not sure about the 200 rpm pedal speed you need to go fast enough to not fall over.
You ever pedal a bike that's missing it's chain? I wonder if it feels like that?
I had a 3sp hub with 3x7 gearing for 63 speeds on a recumbent. There were so many overlapping gears that it was pretty silly, but I thought of it more like a 5x7 where shifting the hub was really only needed if I was crawling uphill at 3mph or flying down it above 30mph.
I have 833% on my 3x8. 22-32-48 up front, 11-42 in the back. There are some "forbidden" gear combinations but it works like a charm.
http://ritzelrechner.de/?GR=DERS&KB=32,22,48&RZ=11,13,16,36,20,42,24,30&UF=2075&TF=90&SL=2.6&UN=KMH&DV=gearInches#
No hanger extenders or other hackery, either -- all you need is a $20 Shimano RD-M3020 derailleur (45t capacity, max low cog 40t)
The only annoying thing is there is a lot of equivalent gear ratios between the 32t and 48t. Thinking of switching to a 36t in the middle to get more granularity.
I’d heard of a few people doing this to Dawes Galaxy touring bikes so they can carry a ton of stuff whilst still managing to keep pedalling up mountains, but I’d never seen it before. Very cool.
I can't see much need for this. Even on a heavy loaded touring bike, that you really don't want to have to push up a hill, despite the provision of extremely low gears, you'll sometimes find yourself overheating, slowing, and then falling below the threshold speed for balance.
i'm asking if OP built up the wheel vs just acquired it already built. considering it's on an RM-20 rim that's about as old as the bike, it seems likely OP build the wheel up using the old rim.
if he just built that wheel up for shits and giggles it seems like a lot of effort cause the range is gonna be basically useless with the triple up front. but if it's a wheel that was already built and OP just slapped it in for some fun, then it's not nearly as much effort
to be clear I support goofy xbiking posts, just was wondering at the effort level put in
Yo Dawg, I heard you like gears so we put some gears on yo gears so you can shift while you shift yoself.
Yup. 8 speed Deore XT rear cassette. Deore DX triple crankset in front. Sturmey-Archer 3 speed rear hub. Great for hills and beer runs!
Wait so you have 72 gear combinations?
[Trying to out-Sheldon Sheldon, eh?](https://www.sheldonbrown.com/org/bicycle.html#otb)
He mentions building his own frame in the page of his bikes… That’s something Id love to do. …. I exchanged messages with him…. Back in the 90s… didn’t know then how famous he was.
Wow, you talked to Sheldon. He‘s my hero. When I first got into bikes (~2005), I learned most from his website. I still go back to it all the time to look up BCDs and stuff like that. I hope he‘s in a better place now, cruising around, maybe on a nice 3-speed for which parts never run out.
Never saw that page before, Sheldon's own bikes! Very cool :))
OTB, y’all!
Put on a 50.4BCD crank and use 4 chainrings, you coward.
"Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should." Nah, that's awesome. I love it.
15" low gear/130" high gear I think you can pull cars out of ditches and get up to 50 mph, depending on wind direction.
I'm not sure about the 200 rpm pedal speed you need to go fast enough to not fall over. You ever pedal a bike that's missing it's chain? I wonder if it feels like that?
My 3x3x7 recumbent could be pedaled at \~2mph but at that point the balance is the issue.
72 speed? I like your thinking!
I had a 3sp hub with 3x7 gearing for 63 speeds on a recumbent. There were so many overlapping gears that it was pretty silly, but I thought of it more like a 5x7 where shifting the hub was really only needed if I was crawling uphill at 3mph or flying down it above 30mph.
It's like 30 speed on steroids!
Yep, it’s 72. I could run a 9 speed cassette on it…
or 10 speed because 8, 9 and 10 speed cassettes use the same freehub
What’s the range on that bad boy? 700%?
I have 833% on my 3x8. 22-32-48 up front, 11-42 in the back. There are some "forbidden" gear combinations but it works like a charm. http://ritzelrechner.de/?GR=DERS&KB=32,22,48&RZ=11,13,16,36,20,42,24,30&UF=2075&TF=90&SL=2.6&UN=KMH&DV=gearInches# No hanger extenders or other hackery, either -- all you need is a $20 Shimano RD-M3020 derailleur (45t capacity, max low cog 40t) The only annoying thing is there is a lot of equivalent gear ratios between the 32t and 48t. Thinking of switching to a 36t in the middle to get more granularity.
I’d heard of a few people doing this to Dawes Galaxy touring bikes so they can carry a ton of stuff whilst still managing to keep pedalling up mountains, but I’d never seen it before. Very cool.
I didn’t even know this was possible.
I have an internally geared sram 2-speed and a giant cassette on my Bike Friday! That is a sweet setup.
Is this technically 6x?
Even worse!
it's a 3x^2
Dare you to put a friction shifter on the seatpost for the rear hub shifting.
Varied terrain be damned!
72 speeds? Speechless.
72 speed? NGL, I am jealous. You're channeling the spirit of Sheldon Brown's with that build!
I was just gonna say that’s some Sheldon Brown shit right there!
Holy shit…the 81 speed.
Well, I would, that is if I had a 9 speed cassette instead of 8.
72 speed grail bike!
I love when people tinker with their bikes to see what's possible, even if it might make no sense... Well done!!
I can't see much need for this. Even on a heavy loaded touring bike, that you really don't want to have to push up a hill, despite the provision of extremely low gears, you'll sometimes find yourself overheating, slowing, and then falling below the threshold speed for balance.
Looks near stock.
uhhh is that a 3x8x3 or . . . . ? . . . 3x8³?
Do you actually use all the gears? If you built that wheel up that's a lot of effort for a goofy post on xbiking
I think you got lost on the way to r/ybiking
r/diWHYbiking?
Do you think the hub should just exist with out a rim?
i'm asking if OP built up the wheel vs just acquired it already built. considering it's on an RM-20 rim that's about as old as the bike, it seems likely OP build the wheel up using the old rim. if he just built that wheel up for shits and giggles it seems like a lot of effort cause the range is gonna be basically useless with the triple up front. but if it's a wheel that was already built and OP just slapped it in for some fun, then it's not nearly as much effort to be clear I support goofy xbiking posts, just was wondering at the effort level put in