![]() Oh, and Baldwooky, you can get 15/16" (aka 23.8mm) to 19mm hat spacers, to run a 1piece type sprocket on a 19mm 3 piece. on a Worksman INB.Īny other tech questions or if you need links, feel free to ask. I'm running a Profile Flywheel 44t on a 19mm Redline Flite crank. So, which crank? Any 19mm spindle will do 19mm is basically the "standard" bmx 3 piece these days, although there are 20.0mm, 22.0mm, and 7/8" spindles out there, too. If not, Profile sells them, or go with Option E from Porkchop **EDIT** porkchop doesn't have this part if you need to run a 7/8" bore chainwheel on a 19mm spindle, get the part from Profile! **EDiT OVER** **EDIT**April 2017 the url for the 7/8" to 19mm hat spacers is now **EDiT OVER** You'll want to measure carefully before you line everything up, as frequent rebuilding of most BMX cranks leads to the splines wearing down on the spindle.įWIW, a sprocket like the Imperial is not meant for square taper cranks, and won't work on any. If the Imperial has a 7/8" bore, you'll need a 7/8"-to-19mm hat spacer, which likely came with your sprocket. at any rate, don't cheap out! Definitely get a sealed one) and any BMX-style 3 piece crank with a 19mm spindle. In either case, you'll want to get an American BB set for 19mm cranks (You can spring for a Profile or Redline makes a good one for cheap. Depending on the vintage, your Imperial will either have a 7/8" bore or a 19mm bore. If you wanna run a Profile Imperial, I'd STRONGLY advise against going with a euro adaptor you won't need it. Hopefully somebody can shed a little light on this conversion, again this is going on a Workman frame but I think my confusion would translate to other 26" cruiser frames. I browsed the "How To" section but didn't find anything specific and I' know it's been done quite a bit. I get that some of the spindles are square taper or splined for the crank arms, again though, no size references beyond the crank arm? What are the items of concern when going this route (1 to 3 crank conversion)? Obviously BB size is an issue but typically the only measurement I seem to be seeing is the crank arm length. ![]() I don't know squat about BMX bikes, which most three piece crank sets I'm seeing are referred to. Now the problem is the sprocket won't fit a one piece crank set (at least none that I have on hand) and hopefully I don't have to go with a Profile crank set up based on the pricing I've seen. Hopefully "Bicycle808" is reading, apparently done some updating stuff to these INB frames! Thanks for all your help to date, let me know what you think of the above combo and If it works well done to you clever ones who said right from the beginning.I'm looking at using a 3 piece crank set on the Workman INB frame, mainly cause I obtained a really nice Profile Imperial 44t sprocket for peanuts (and it's what was used on the Core 77 build that inspired the initial project). I recon I could get away with the following spindleĪnd any of these Euro Bottom Bracket conversion kitsĭo you centralise the spindle with the spacers to get the chainline required? Itseems to be a floating spindle? Needing to get your help and thanks in advance I have looked on the redline site but they seem to only provide ten Redline Euro BB with 6 spline that I can fit my Old school flight crankĬan you help me as I just gotta get this baby built. You have been recommended by the os-bmx site as being able to provide a My 80's JMC has a euro BB about 34mm shell diameter and this spindle This was designed for the US BB shell with Spindle BB which is 6 spline 19mm diameter over the splines and 22.5mm I have some 80's old school Redline flight cranks with the dimple Hi guys/gals, I wonder if you can help me solve a riddle. So looking at Dans Comp I sent them this pleading help question OK thanks for the e-bay link, I saw that one too but can't seem to get the BB seperate. I hope I have not jinxed any of the components on the build. ![]() Imagine that always questioning "Whats the cra*k". I will struggle with my Wife as she is Irish. ![]()
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