cassette

i heard miche's are great. i've smashed around on them for about 20 miles on a friends bike and they were great. I've ran 75's and notice flex...

aal

I'll admit my ignorance. What part of the crank set up actually flexes?

adampaiva

just be lucky and find 75s for 75$ on CL

Retem

dude I hate to brake it to you but I weight well over 200lbs and ride like a mad man and haven't noticed much flex

and by the way I hate my fsas the bb are junk and the spider slippage is really dangers have a nice day

BuddyMike

I ride on RD's too. I weigh 175 on a bad day and I still get flex out of them. The only real issue with the RD's is the flex, but they haven't snapped on me.... yet.... I don't know if they will, but I'd recommend something sturdier if you have the money. The RD's are good for the money spent.

rpc180

I ride RDs, they're fine for tooling around town. I would've only gone with the 75's if I were racing ... but I also only weight 135lbs and don't put out more than 200w at my best.

deathhare

Theyre about 100 bucks new here.

aal

There's another thread going on which suggests that the "flex" is in the bottom bracket. A lot of people seem to be comparing how one bike with the rd, for example, flexes, as compared to another bike with, for example, the 75. Anyone actually use both on the same bike, and notice a difference? I assume the 75 is theoretically stiffer, but it still seems like the real flex, or most of it, will come from the bottom bracket.

noisebeam

I've used only RD and wouldn't know if the 'flex' comes from the crank or the frame. How can one tell? If pushed on the crank, the pedal would 'flex' inward, but the whole frame moved inward too.
Al

sniks

i think the reality is it come down to which one looks better. flex is probaly not a huge deciding factor if its minimal between the two.
so what cranks did you decide on?

mihlbach

well..every part of your drive train, and for that matter almost every part of your bike, flexes to some extent. All of this contributes to the flex you feel when you are really putting the hammer down. To say that one type of crank is more flexy than another, when you are not even comparing them with the exact same bike, is absolutely meaninless.

piwonka

isn't ISO taper larger than JIS taper?

jimmy_jazz

Is whatever difference there is in flex really going to make any difference (or be apparent) at all for the vast majority of riders?

Retem

iso is blunt and jis is more slender most modern cranks cept campy and paul are jis

sprintcarblue

Well, I just ordered some sugino rd cranks. I can't really fork out for 75's. I hope I'm not making the most terrible mistake of my life.

noisebeam

I assure you you are not.

BuddyMike

You'll be fine. EXCEPT you can ride an average of 5 miles an hour faster for longer distances with the 75's though.

mihlbach

I hope you are joking.

sniks

all the hipsters will point and laugh.
but you will be fine and your bike will still be cool.

JWalton215

Does anyone know the story on sugino GLP cranks? Google only turns up that they were stock on schwinn madisons in the 80s...

andre nickatina

I decided on the 75 because I figure since cranks last so long, I'll be happier in the long run. But then I got an offer for some vintage Sugino Mighty Competition's which are the precursor to the 75, so I'm debating that now. I'm gonna research into the Mighty Comps and figure this out, because after adding up everything I want to buy I've realized I should go the used route for some of what I want... and new 75's run 180 w/ chainring shipped from Mud Sweat and Tears bike shop, much more everywhere else. Anyone knows anything about Mighty Comps?

dutret

a 144bcd road double that came stock on lower-midrange roadies in the 80's. Maybe there was a track specific version I don't know. Solid and more then stiff enough for general use.

BuddyMike

I wouldn't think anyone would even think that could be serious

luckycat

Super mighty comps were campy copies, and fairly nice cranks. How much can you get them for? If it's more than a hundred just go for a new pair of 75s. It sounds like that's what you really want anyway.

And what's so wrong with aesthetics? One of the cool things about cycling is the attention to details. If you like it, and can afford it, then why the hell not?

andre nickatina

$150, and I have the feeling it'd be a hell of a time figuring out the correct BB... it's hard enough with the 75, people can't even agree if it's JIS or ISO though I've read of a lot of people running UN53's with no problem as the BB, on velospace and this forum. But yeah since this placehttps://www.bikeusa.com/MERCHANT2/mer...ct_Code=CR1011 has them for the cheapest I've found anywhere, online or LBS, it's a good deal. So why let it pass up, I'm sure they'll increase their price as time goes on. From what I understand 75's used to be cheaper until everyone started buying them ...