Daniel C Posted September 6, 2009 Report Share Posted September 6, 2009 hi guys recently i have had a pro2 cut down to fit a mod but now ive been trying everywhere to get it threaded but nowhere seems to have a die big enough so...i have come to the conclusion of welding a sprocket on the back...good or bad idea?or does anyone no where i could buy a die from? (same thread as a ckris king lockring)anyhelp wold be appreciated Quote Link to comment Share on other sites More sharing options...
Matt Vandart Posted September 6, 2009 Report Share Posted September 6, 2009 hi guys recently i have had a pro2 cut down to fit a mod but now ive been trying everywhere to get it threaded but nowhere seems to have a die big enough so...i have come to the conclusion of welding a sprocket on the back...good or bad idea?or does anyone no where i could buy a die from? (same thread as a ckris king lockring)anyhelp wold be appreciated Are you on about the thread inside the drive?If so you need a tap, would cost alot.Take it to an engineering workshop and get them to put the thread on with a lathe.If you weld them you will need a stainless sprocket, anyone that is any use with a tig will be able to weld it.Alternateively get a wide base cog and bronze weld it on, you may have trouble finding someone that is any use at bronze welding (which is different to brazing).Matt Quote Link to comment Share on other sites More sharing options...
Mike Winton. Posted September 6, 2009 Report Share Posted September 6, 2009 i dont know where you could get one from, i guess you could ask profile? they do a lockring which threads onto outside of driver Quote Link to comment Share on other sites More sharing options...
Daniel C Posted September 6, 2009 Author Report Share Posted September 6, 2009 no it needs to be on the outside loland im sure that profile have a smaller size if you understand me lol profile sprockets dont fit pro2'sdoes anyone no where danny swindlehurst got his threaded? Quote Link to comment Share on other sites More sharing options...
sstein Posted September 6, 2009 Report Share Posted September 6, 2009 As said get an engineering firm to do it with a lathe Quote Link to comment Share on other sites More sharing options...
Muel Posted September 7, 2009 Report Share Posted September 7, 2009 Yeh you'll never get the right tap, and if you do it'll cost a fortune.A lathe with auto feed is what you need. (You'll have to find out the exact mesurements of the thread needed first though.I'd be tempted to try heat treating and grinding some cutting teeth into a lockring as a makeshift tap, done it with BB shells before and it seemed to work alright. Quote Link to comment Share on other sites More sharing options...
Pashley26 Posted September 7, 2009 Report Share Posted September 7, 2009 Shit man, some of you guys are dodgy. I don't think I've ever been so scared for somebodys teeth/face/life as I am reading this thread.Why not just use the right hub ? Quote Link to comment Share on other sites More sharing options...
Muel Posted September 7, 2009 Report Share Posted September 7, 2009 Man up Jed, it's not dodgy if it's done properly, I measured it up last time I rebuilt my hub. Quote Link to comment Share on other sites More sharing options...
Daniel C Posted September 7, 2009 Author Report Share Posted September 7, 2009 Yeh you'll never get the right tap, and if you do it'll cost a fortune.A lathe with auto feed is what you need. (You'll have to find out the exact mesurements of the thread needed first though.I'd be tempted to try heat treating and grinding some cutting teeth into a lockring as a makeshift tap, done it with BB shells before and it seemed to work alright.muel i must say you are te most helpful person on this forum lol, so if i take the thread size to a local engineering company and tell then the thread size they should be able to do it on a lathe? Quote Link to comment Share on other sites More sharing options...
Muel Posted September 7, 2009 Report Share Posted September 7, 2009 Cheers, I try. Yeh shouldn't be a problem, unless they can't mount it true, depends if the drive shell was machined all in one job or in two, looking at it is may have been done in two so they may struggle, but it's not impossible. No idea what the thread sizes are though, but I did have a look with google but could only find the dimensions of a screw on sprocket thread. Quote Link to comment Share on other sites More sharing options...
PaRtZ Posted September 7, 2009 Report Share Posted September 7, 2009 pics of the hub btw?Im guessing the threads arent standard metric/imperial size? Are they available from Hope?Good job if you can get it done though Quote Link to comment Share on other sites More sharing options...
totaltrials Posted September 7, 2009 Report Share Posted September 7, 2009 muel i must say you are te most helpful person on this forum lol, so if i take the thread size to a local engineering company and tell then the thread size they should be able to do it on a lathe?They would have to do it on a lathe and yes they will be able to do it if you give them the thread size which would be 1.375" x 24TPI. Although I'm not sure how you would actually do it as there's no material to turn a thread onto the hub. You could try and turn a thread onto the hubs cassette and use a lockring to hold the sprocket in place, as I take it the cassette has been machined down which removes the internal locking thread. I'm not sure though, you'll just have to make sure what you're trying to do is actually possible as it's the kind of thing you'd have to see to make sure it was possible. Quote Link to comment Share on other sites More sharing options...
Mat Smith!! Posted September 7, 2009 Report Share Posted September 7, 2009 Shit man, some of you guys are dodgy. I don't think I've ever been so scared for somebodys teeth/face/life as I am reading this thread.Why not just use the right hub ? How is it dodgy? the internals are EXACTLY the same, its just got like 15mm cut off the axel and drive shell, isnt going to make a difference at all, and im sure propper pro 2 lockrings need to be tapped on the inside of the drive shell, which isnt the hardest thing ever, just go to an engineer garage and get them to run the correct tap through it. Quote Link to comment Share on other sites More sharing options...
Alex Dark Posted September 7, 2009 Report Share Posted September 7, 2009 How is it dodgy? the internals are EXACTLY the same, its just got like 15mm cut off the axel and drive shell, isnt going to make a difference at all, and im sure propper pro 2 lockrings need to be tapped on the inside of the drive shell, which isnt the hardest thing ever, just go to an engineer garage and get them to run the correct tap through it.It's just that he's proposing to weld it on and that..... Quote Link to comment Share on other sites More sharing options...
adamant jamesie Posted September 7, 2009 Report Share Posted September 7, 2009 well if u weld it and it dosent wrok u guna have to get new hug so i would shop around for tht thread because u be pissed if u gota buy new 1 :/ Quote Link to comment Share on other sites More sharing options...
Borat Posted September 7, 2009 Report Share Posted September 7, 2009 (edited) well if u weld it and it dosent wrok u guna have to get new hug so i would shop around for tht thread because u be pissed if u gota buy new 1 :/ Edited September 7, 2009 by Borat Quote Link to comment Share on other sites More sharing options...
forteh Posted September 7, 2009 Report Share Posted September 7, 2009 (edited) They would have to do it on a lathe and yes they will be able to do it if you give them the thread size which would be 1.375" x 24TPI.Its 1.375" (1 3/8" in real money) x 24tpi british cycle thread, off the top my head Im not sure if you would be able to cut that specific thread into the freehub body splines.You would be able to get a thread turned on, probably a metric fine would be best, get the people who cut your thread to make you a lockring aswell, jobs a goodun edit: you might be able to use a BB shell threading die (if you can find an engineer who has one) to cut the thread onto the driveshell. Edited September 7, 2009 by forteh Quote Link to comment Share on other sites More sharing options...
Skoze Posted September 7, 2009 Report Share Posted September 7, 2009 well if u weld it and it dosent wrok u guna have to get new hug so i would shop around for tht thread because u be pissed if u gota buy new 1 :/How the f**k did you get validated!?From what I can gather, seems a good plan (getting a new thread cut, welding is a bad idea) - thoroughly check EVERYTHING before you get it done though! Quote Link to comment Share on other sites More sharing options...
Matt Vandart Posted September 7, 2009 Report Share Posted September 7, 2009 muel i must say you are te most helpful person on this forum lol, so if i take the thread size to a local engineering company and tell then the thread size they should be able to do it on a lathe?As I said before take it to an engineering workshop.You might as well get them to do a proper job and machine the internal parts of the drive shell, just move the bearing back and get the thread re cut, internally, it's just the same as having it cut externally, but will be a better job.I don't know why your bothering anyway, I was gonna do this to one of mine but I don't think Hope pro trials are worth the bother, but it's good to just do it for the sake of it I suppose.Matt Quote Link to comment Share on other sites More sharing options...
Alex Dark Posted September 7, 2009 Report Share Posted September 7, 2009 I don't know why your bothering anyway, I was gonna do this to one of mine but I don't think Hope pro trials are worth the bother, but it's good to just do it for the sake of it I suppose.MattMy thoughts exactly i'd just use a bmx ISO...or iuse a front freewheel, but hey, your pro2 Quote Link to comment Share on other sites More sharing options...
Cookyboy Posted September 7, 2009 Report Share Posted September 7, 2009 well if u weld it and it dosent wrok u guna have to get new hug so i would shop around for tht thread because u be pissed if u gota buy new 1 :/How the f**k did you get validated!?He aint!? seems like the new systems f**ked!? Quote Link to comment Share on other sites More sharing options...
Mark W Posted September 7, 2009 Report Share Posted September 7, 2009 Nope, 5 people thought he was worth validating.I didn't.To quote the Chemical Brothers, I pushed the button... Quote Link to comment Share on other sites More sharing options...
Pashley26 Posted September 7, 2009 Report Share Posted September 7, 2009 Nope, 5 people thought he was worth validating.I didn't. :$ OBM; you're a bad, bad man... Quote Link to comment Share on other sites More sharing options...
Daniel C Posted September 7, 2009 Author Report Share Posted September 7, 2009 Just to clarify...there is no room to have a thread put on the inside as the bearing is there, the bearing cant be moved else there will be too much stress on the freehub body and nothing to stop it pulling when putting pressure on it...faceplant jobby!It has to be cut onto the outside.Looks like im gonna have to get a lockring made with some threads in. Will the fact that king is american? affect the thread size?that may be a stupid question lol. Quote Link to comment Share on other sites More sharing options...
MikeCottTrials Posted September 7, 2009 Report Share Posted September 7, 2009 Just to clarify...there is no room to have a thread put on the inside as the bearing is there, the bearing cant be moved else there will be too much stress on the freehub body and nothing to stop it pulling when putting pressure on it...faceplant jobby!It has to be cut onto the outside.Looks like im gonna have to get a lockring made with some threads in. Will the fact that king is american? affect the thread size?that may be a stupid question lol.Thought it was a pro2?i shouldn't think so. america uses the same equipement as we do, just not aswell Quote Link to comment Share on other sites More sharing options...
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