planet x alan Posted April 14, 2007 Report Share Posted April 14, 2007 got a set of echo forged cranks sadly the pedal threads are busted on them... they just went when out riding. both in the space of a couple of days. would it be possible to drill them out and put the tensile pedal thingy in there?this thingi am a fairly harsh rider.. so will this affect the strength much?thanks Quote Link to comment Share on other sites More sharing options...
basher Posted April 14, 2007 Report Share Posted April 14, 2007 It should be fine to do that aslong as you can find the right taps as no doubt the thread will be a strange one. I shouldn't think the strenght will be affected all that much, I should only think it will be ever so slightly weaker around the thread as your removeing some material. But your not applying no heat or anything to the ally then you should be ok. Quote Link to comment Share on other sites More sharing options...
planet x alan Posted April 14, 2007 Author Report Share Posted April 14, 2007 just had another idea... plain old heli coil? what you reckon? cheaper.. easer? less meterial coming off.thanks Quote Link to comment Share on other sites More sharing options...
Si-man Posted April 14, 2007 Report Share Posted April 14, 2007 standard pedal thread size is 9/16 x 20tpi i think.Remember though, opposite threads for pedals (asin the are left hand as to not undo the insert/ axle) Quote Link to comment Share on other sites More sharing options...
basher Posted April 14, 2007 Report Share Posted April 14, 2007 standard pedal thread size is 9/16 x 20tpi i think.Remember though, opposite threads for pedals (asin the are left hand as to not undo the insert/ axle)But he doesn't need that thread size as hes talking about using tensile inserts so he needs the thread size of outer thread on the insert. Not the pedal thread. If no one on here noes it ring onza/supercycles they will no or tarty might Quote Link to comment Share on other sites More sharing options...
Si-man Posted April 14, 2007 Report Share Posted April 14, 2007 But he doesn't need that thread size as hes talking about using tensile inserts so he needs the thread size of outer thread on the insert. Not the pedal thread. If no one on here noes it ring onza/supercycles they will no or tarty mighti know, im just saying thats the size for axles so he knows where abouts to go off. Quote Link to comment Share on other sites More sharing options...
Netherking Posted April 15, 2007 Report Share Posted April 15, 2007 got a set of echo forged cranks sadly the pedal threads are busted on them... they just went when out riding. both in the space of a couple of days. would it be possible to drill them out and put the tensile pedal thingy in there?this thingi am a fairly harsh rider.. so will this affect the strength much?thanksM8 excatly the same thing happened to me a couple of days ago. f**king piss take. lol mainly the drive side has gone. i just noticed during riding the the pedal was off at a wierd angle. helicoil i reckon, might slove my problem cheap Quote Link to comment Share on other sites More sharing options...
moza Posted April 15, 2007 Report Share Posted April 15, 2007 hi, happened to my mates echo cranks, he just got it helicoiled and it has been good as gold and he is realy harsh moza Quote Link to comment Share on other sites More sharing options...
Netherking Posted April 17, 2007 Report Share Posted April 17, 2007 does any know the thread size for the tensile inserts for cranks ???? Quote Link to comment Share on other sites More sharing options...
br3n Posted April 17, 2007 Report Share Posted April 17, 2007 (edited) my zoo cnc cranks did that after about a month, I just assumed they were useless and went back to rs7's.Does someone want to give me a brief summary of what a helicoil is? and how i'd go about using one (seen some pics but unsure) Edited April 17, 2007 by trialsmad Quote Link to comment Share on other sites More sharing options...
Netherking Posted April 17, 2007 Report Share Posted April 17, 2007 my zoo cnc cranks did that after about a month, I just assumed they were useless and went back to rs7's.Does someone want to give me a brief summary of what a helicoil is? and how i'd go about using one (seen some pics but unsure)from what i make of it, its tapping a slightly bigger hole in whatever and then inserting a springy thing in to restore the thread and bring the hole back to the normal size. probably wrong thou thread size of tensile inserts anyone?? Quote Link to comment Share on other sites More sharing options...
Netherking Posted April 17, 2007 Report Share Posted April 17, 2007 and btw now the removal threads on the cranks have gone on the drive side so i can't even take them off. Quote Link to comment Share on other sites More sharing options...
Deonn h Posted April 17, 2007 Report Share Posted April 17, 2007 and btw now the removal threads on the cranks have gone on the drive side so i can't even take them off.use a hammer then.zoo cranks about 2 hits and there off . Quote Link to comment Share on other sites More sharing options...
br3n Posted April 19, 2007 Report Share Posted April 19, 2007 I went to some engineering places today and they said they could do the drive side (as its normal thread) but not the other side as theyre left hand, Anyone know anywhere who can actually helicoil (or similar) both sides? Quote Link to comment Share on other sites More sharing options...
Netherking Posted April 19, 2007 Report Share Posted April 19, 2007 I went to some engineering places today and they said they could do the drive side (as its normal thread) but not the other side as theyre left hand, Anyone know anywhere who can actually helicoil (or similar) both sides? nah i've called various places. all the bike shops in town and a couple of engineering places only found one place, precision engineers. but they didn't have the right tap or couldn't do the non drive side either. the closes tap he had was 9/16th's *18tpi and the pedals have an oversized thread of 9/16th's *20tpi!! tarty gave me the diameter and the pitch of the thread of the tensile inserts which are 18.75 Diameter 1.2pitch. i'm considing trying to fit these. hopefully the engineer will have the right tap for those.harry Quote Link to comment Share on other sites More sharing options...
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