will redline flight cranks fit a euro bb

#WILL REDLINE FLIGHT CRANKS FIT A EURO BB TRIAL#
#WILL REDLINE FLIGHT CRANKS FIT A EURO BB PLUS#

Since the one thing that you won't (I presume) be changing is the rear wheel, let's start with the rear chainline.ġ. Rear is how far out your cog is from the center of the frame. Front is how far out your chain ring is from the center of the frame. Now, of course there are two chainlines - front and rear. The main thing to keep in mind in this conversion is chainline. Sorry, I know this thread is a little old, but it's not clear if the OP ever got his answer, and I just went from never having done such a conversion to doing both a cottered-to-3 piece and one piece-to-three piece conversions in the last two weeks, so I think I can break it down at the level you may be at.

Even the biggest Thompson shells are going to be 6mm too narrow for an American-sized cup, so I'm guessing it'd be super obvious that the parts were incompatible. They typically came on older European bikes, and usually ran 2- or 3-piece cranks of unique design.

My final thought, and it's from way out in space, is that maybe you got a frame with a Thompson-style BB shell (AKA 'Thun')? These look like American shells, but smaller, with a few different 'standards' out there.

The shell's ID should, theoretically, be 2.02' but it wouldn't surprise me if it were 2.0 or 2.01, and you should be able to MacGyver-up a solution for that (like, file the cups down or something.) The cups should be, theoretically, a little bit too big to get the friction needed for a nice press-fit. My best advice at this point is to get some calipers and start measuring. (American BB shells are also supposed to be 68mm aka 2.68' from left to right, but i've seen a lot of variation here, with shells off by a few mm, but this won't matter for most cranks.) While I've only seen these with 3 bolts in the past, you are basically right that all American BB shells are s'posed to be the same ID (2.02' or 51.3mm), although I have found that tolerances can be pretty crude (some will be a little tight or a little loose) I've always been able to press them in. I just installed some Redline Flights on my Triple S, and while they're a bit pricey, they look awesome and they're stiff as can be. Get yourself some of those Sunday Saker cranks they're cheap and ppl seem to like'm.

#WILL REDLINE FLIGHT CRANKS FIT A EURO BB PLUS#

If you get an external-bearing road crank, it's pretty straightforward, but chainline is not adjustable plus you gotta run the sprocket on the inside of the spider which works fine, but it gives the bike a no-talent hack-job kinda look (and yeah, I've sported bikes like that.so i speak from experience). If you go with a more modern external bearing set-up, you'll find that chainline for the MTB-type cranks is far too outboar (and not adjustable).

#WILL REDLINE FLIGHT CRANKS FIT A EURO BB TRIAL#

you're going to have to research it, google it, do some math to make it all fit your application, and then it still might take some trial and error. But, if you go with a square-taper type of crank/bb (and most RRB types do), then you're going to be wondering what length spindle to get, and you re gonna be PO'd when you realize that these things aren't standardized. Going with the euro adaptor and a thread-in BB/crank is totally workable, and it ain't bad, and it's not even all that weak if properly installed. I've got 3-piece cranks on a couple different bikes with american-sized shells, and RRB is littered with hundreds of posts about it. Even better, you have a lot of adjustability in the chainline with a BMX crank, which is weird b/c BMX set-ups tend to have standard chainline, but it's an awesome surprise advantage.Ī lot of folks go 3-piece on their cruisers. OTOH, tubular chromo 3-piece cranks, like they use in bmx, you've got very sgtrong and stiff cranks that are designed to work in a BB set without a bolt-in adaptor. Even if you're running the most bomb-proof mtb/dh cranks, your BB interface is weakened via the use of the adaptor- more parts, more bolts, more things to flex and wiggle. The only reason I tend to avoid this is b/c it's a kludgey solution where, in the end, your crank set-up will be weaker. And then just thread in whatever MTB/road/Track-type Euro BB to mount the cranks.

Will redline flight cranks fit a euro bb