all round crank size

[Ed_toast]

I commute (14 miles)on a 26" muni and its got 150mm cranks and im wanting some shorter cranks, im going to get some ninbus venture2 cranks but im wondering what’s gunna be the best all round size, between 75mm 102mm 114mm 125mm I only do light offroad atm, what size would you guys recomend

[Nate128]

Oh I just want to also add along with the OP, is there a place to try on cranks that’ll work for our unicycle without actually buying it? Some of them are expensive, at least for me. Hard to actually experiment and see which crank is ACTUALLY the best for that specific person and the road.

Or do we have to join some sort of local unicycle club to do that?

By the way, if you haven’t noticed:

Wheel size, crank length and body weight.

Hi there! I’ve been thinking lately about the “perfect” crank length on my unis. The factors i thought of as being important in this case are: the size of the wheel, the type of riding and the terrain, my body weight. i weigh about 60kg so that’s about the maximal force i can put on the pedals without pulling on the grab handle or handlebar. For riding on road with my 24" i use 125mm so far, this feels kinda good to me and i did master every ascent or descent i encountered so far. On my 26…

[jtrops]

On a 26 muni I think you already have a good set of all around cranks. Personally I favor 140, but that’s not on your list. I’ve had a good time running 125’s on 26 and 29. I wouldn’t go shorter than that if you plan on riding any trails. I currently have 140/120 dual hole cranks on my 29, and to me it is the best single crankset I have.

Also worth noting is the relative cheap price on Quax lightweight cranks. They aren’t as robust as Ventures, but at the price you could get a few sets. They are really fine for road cranks.

[tholub]

@Ed toast

I commute (14 miles)on a 26" muni and its got 150mm cranks and im wanting some shorter cranks, im going to get some ninbus venture2 cranks but im wondering what’s gunna be the best all round size, between 75mm 102mm 114mm 125mm I only do light offroad atm, what size would you guys recomend

You might want to get the 110/137 dual-holes. 14 miles is a long way on a MUni, I’d want the shortest cranks I can comfortably ride, but 110mm is pretty short for off-road.

[JacobSpera]

137s is the all around size i think. It feels comfortable to pedal on most unis

[johnfoss]

Ed,
You didn’t mention what your commute is like. Is it dirt? Any hills? If paved, are you using a muni only because it’s your biggest wheel?

@tholub

14 miles is a long way on a MUni, I’d want the shortest cranks I can comfortably ride, but 110mm is pretty short for off-road.

Basically what he said. If it’s dirt, 110/137 would give you a nice range. If it isn’t dirt, I’d use 102s.

[Ed_toast]

Cheers for the sugestions guys, John, its my biggest wheel atm, its got some up hill mainly pavement, but a bit of dirt aswell, ideallyid get some dual holes but money is tight atm, wich is why its between the 2sets I mentioned

[Ed_toast]

Nate, that crank shop is a brilliant idea, cheers for that link found this in it

@saskatchewanian

I did up a spreadsheet and colored in the similar values for easier visualization of similar gain ratios. The comments at the bottom are just what I think the various ratios would be suited for. The chart also demonstrates the jump in wheel sizes between 29 and 36. I wonder if that gap will ever get filled?

I used nominal values for the wheel sizes and a gearing ratio of 1.5 for the geared numbers but it should be good enough to give people a good idea of what kind of gain ratio they have in various setups.

And its brilliant