jsychem Posted July 13, 2007 Report Share Posted July 13, 2007 (edited) I have ripped to echo forged drive side cranks in the last three weeks and know of two others in jersey that have. Thankfully tarty sorted the problem out quickly(thanks tarty bikes) but is anyone else having this problem and do they know of any other cranks under £50 incase they strip again??!! Edited July 13, 2007 by jsychem Quote Link to comment Share on other sites More sharing options...
willy wonka Posted July 13, 2007 Report Share Posted July 13, 2007 To be honest I think its just people not maintaining them properly.Mine have been fine, I just regularly check them.Never had any problems. Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted July 13, 2007 Report Share Posted July 13, 2007 To be honest I think its just people not maintaining them properly.Mine have been fine, I just regularly check them.Never had any problems.That's the main thing, yep... you need to do it with all cranks, just less expensive ones give you less margin for error.Always check your pedals are tight before every ride to a minimum of 310 in-lbs (35 Nm) and ensure your pedal axles are clean (a wire brush works well!) then greased before installation. This will prevent any damage to crank pedal threads. Quote Link to comment Share on other sites More sharing options...
thornabytrials.co.uk Posted July 13, 2007 Report Share Posted July 13, 2007 how can they strip if the freewheel is installed correctly in the first place? Quote Link to comment Share on other sites More sharing options...
T.McMillan Posted July 13, 2007 Report Share Posted July 13, 2007 some people are silly billys Quote Link to comment Share on other sites More sharing options...
dangerous_dave Posted July 13, 2007 Report Share Posted July 13, 2007 Always check your pedals are tight before every ride to a minimum of 310 in-lbs (35 Nm) and ensure your pedal axles are clean (a wire brush works well!) then greased before installation. This will prevent any damage to crank pedal threads.i mashed my crank thread for the drive side pedal yesterday on my DDG orbita crank, so i think i'm going to get one of these echo forged cranks or a truvativ crank of some sort.im not sure why it happened though, i keep everything tight and greased. Quote Link to comment Share on other sites More sharing options...
thornabytrials.co.uk Posted July 13, 2007 Report Share Posted July 13, 2007 i mashed my crank thread for the drive side pedal yesterday on my DDG orbita crank, so i think i'm going to get one of these echo forged cranks or a truvativ crank of some sort.im not sure why it happened though, i keep everything tight and greased.ahh your on about the pedal thread... thought yous were on about the freewheel thread..but still... surely if the pedals are installed correctly and tightened up they wouldn't strip out??? Quote Link to comment Share on other sites More sharing options...
willy wonka Posted July 13, 2007 Report Share Posted July 13, 2007 but still... surely if the pedals are installed correctly and tightened up they wouldn't strip out??? They won't.This is what people are complaining about, they don't take care of them then they mess up their cranks.As for the orbita cranks, they are probably the works cranks in existence. Quote Link to comment Share on other sites More sharing options...
jsychem Posted July 14, 2007 Author Report Share Posted July 14, 2007 (edited) They stripped where the pedal joined the cranks (not at the freewheel ends). And thanks for the help Edited July 14, 2007 by jsychem Quote Link to comment Share on other sites More sharing options...
Muel Posted July 14, 2007 Report Share Posted July 14, 2007 (edited) You need a really good quality tool which will engage with all the threads on the crak to get it off, also make sure it is new and it is a tight fit. The are mint cranks, they just need greasing up properly and checking for tightness every now and again.If you have stripped the pedal thread, then you tightened them up wayyyy to much, pedals only need to be just tight, not lamped up solid. Edited July 14, 2007 by KuelMuel Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted July 14, 2007 Report Share Posted July 14, 2007 If you have stripped the pedal thread, then you tightened them up wayyyy to much, pedals only need to be just tight, not lamped up solid.It's actually normally a case of the opposite - unless you have a 3 or 4ft long pedal spanner it's impossible to rip the thread out unless you're Jeff Capes! Stripped pedal threads usually come about when the pedal is ridden loose.When aluminium parts are first fitted they undergo something called 'creep'. The top layer of the part in contact with another component (alloy crank arm, steel pedal axle in this case) hardens up, shrinks in size a tiny amount and allows the two parts to come loose from each other a little. Then, if you ride the bike like this, a small amount of movement develops and it's bye bye thread! Quote Link to comment Share on other sites More sharing options...
Matt Breeze Posted July 14, 2007 Report Share Posted July 14, 2007 There is nothing wrong with Echo forged cranks, but isnt it part of bike maintainence to make sure there all tight, including pedles...... i know hundreds of people who run them and have had no problems. Including me .Maintain your bike! Matt Quote Link to comment Share on other sites More sharing options...
Muel Posted July 14, 2007 Report Share Posted July 14, 2007 It's actually normally a case of the opposite - unless you have a 3 or 4ft long pedal spanner it's impossible to rip the thread out unless you're Jeff Capes! Stripped pedal threads usually come about when the pedal is ridden loose.When aluminium parts are first fitted they undergo something called 'creep'. The top layer of the part in contact with another component (alloy crank arm, steel pedal axle in this case) hardens up, shrinks in size a tiny amount and allows the two parts to come loose from each other a little. Then, if you ride the bike like this, a small amount of movement develops and it's bye bye thread!So thats why you should check that everything is tight during your first ride? I do it all the time anyway. Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted July 14, 2007 Report Share Posted July 14, 2007 So thats why you should check that everything is tight during your first ride? I do it all the time anyway.Yep, exactly. And second, and third, and fourth... for a good month or so I'd say. Quote Link to comment Share on other sites More sharing options...
Muel Posted July 14, 2007 Report Share Posted July 14, 2007 Yep, exactly. And second, and third, and fourth... for a good month or so I'd say.My pedals were loose today, but both? I tightened them up only last week and have hardly riden my bike, got it out of the shed and was rattling like mad.Someones little brother has been playing the twat game again, last week my Dad went out on his road bike and the handlebars twisted down. Quote Link to comment Share on other sites More sharing options...
JoeEden Posted July 15, 2007 Report Share Posted July 15, 2007 I have ripped to echo forged drive side cranks in the last three weeks and know of two others in jersey that have. Thankfully tarty sorted the problem out quickly(thanks tarty bikes) but is anyone else having this problem and do they know of any other cranks under £50 incase they strip again??!!yes my mate ripped the thread out of he's pedal on these echo forged cranks but then again my cousin has ome and they are running brilliant so i think it is the way people ride. Quote Link to comment Share on other sites More sharing options...
dangerous_dave Posted July 15, 2007 Report Share Posted July 15, 2007 what about the echo CNC cranks?whats the difference apart form the metal used... How much stronger are they? Quote Link to comment Share on other sites More sharing options...
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