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  #1  
Old 12-02-2013, 07:30 PM
mickthecrane mickthecrane is offline
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Default tight sprocket

changing my chain and sprockets on me zephyr, hour tops right, wrong...
cant budge the front sprocket, tight as hell. extention bar and all the gumph, grunt, no go. cut the old chain off as it was knackered and i am tempted to leave the old front sprocket on, with a new back one. dont really want to do that but wot else?. no heat available. ideas, cheers.
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Old 12-02-2013, 07:59 PM
Strider Strider is offline
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Had a similar problem ..... loads of WD, diesel etc still didnt move.

I ended up with a piece of tube over the extension bar and was nearly 3 foot long, that worked, well it sheared the bolt, then I drilled it out
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  #3  
Old 12-02-2013, 08:10 PM
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Do as I done on me Strumpet. Buy a new nut for the sprocket , dremel the old bastard off. Small cuts on the sides and split with a chissel. Change sprocket fit new nut . Job done.
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Old 12-02-2013, 08:25 PM
mickthecrane mickthecrane is offline
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Default cheers.

well the thought did occur to me to whack the sodding thing off with a chisel, cut it with a dremel,?, yeah, you know wot , wots a new nut, nice one cheers.
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Old 12-02-2013, 08:55 PM
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its not a left hand thread is it?????

heat will loosen it, but buy a new nut put a run of weld on old nut and then when cooling undo.
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Old 12-02-2013, 09:15 PM
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Heat could also fuck a oil seal behind the sprocket.
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Old 12-02-2013, 09:22 PM
megawatt megawatt is offline
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Was also thinking it could be a left hand thread?
If not take it to local garage, put it in gear, sit on bike with your foot on the back brake and get them to undo it with an air hammer ?
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Old 12-02-2013, 10:32 PM
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Quote:
Originally Posted by megawatt View Post
Was also thinking it could be a left hand thread?
If not take it to local garage, put it in gear, sit on bike with your foot on the back brake and get them to undo it with an air hammer ?
he's cut the chain off ???????
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Old 12-02-2013, 11:49 PM
megawatt megawatt is offline
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Whoops forgot that!!! Well sprag the sprocket with the old chain and make a bracket to lock it against the frame whil you use an air hammer on it.
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  #10  
Old 13-02-2013, 12:13 AM
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or bring it to barnstabubble mate = got a big workshop and loads o air tools
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  #11  
Old 13-02-2013, 12:21 AM
wiskers wiskers is offline
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As has been said rattle gun or inpact bar. but you have cut the chain yup i would go with dremel
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Old 13-02-2013, 03:08 PM
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silly question I know, but did you flatten the tab washer ?
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Old 13-02-2013, 06:57 PM
mickthecrane mickthecrane is offline
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Default oh yes.

oh yes bill, i have flattened the tab washer. i did look though! put some add gas on it tonite, never heard of it before today, if that dont work i will run with the old sprocket for a short while until i get near an air wrench. you all got me thinking about the opposite thread idea though. couldnt be could it? i thought threads would always tighten up so to speak, the way you were travelling. will try tommorrow as its pissing down here. cheers, mick.
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  #14  
Old 13-02-2013, 07:06 PM
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Whack the old chain back on with a temp link & do it the way megawatt said, best done with a fat mate sat on the bike while you handle the bar/ rattle gun

its NOT a left hand thread by the way
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  #15  
Old 13-02-2013, 08:12 PM
mickthecrane mickthecrane is offline
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Default cheers.

will keep you posted guys, cheers.
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  #16  
Old 13-02-2013, 11:28 PM
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Don't run a new chain and rear sprocket with the old front none of it will last long, better to put the old lot back on till you can get the front lose

Zepher definatly[spelin] normal right handed thread
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  #17  
Old 15-02-2013, 12:01 AM
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go on mick tell us its reverse thread
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  #18  
Old 15-02-2013, 12:05 AM
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It ain't a left hand thread
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  #19  
Old 15-02-2013, 07:42 PM
mickthecrane mickthecrane is offline
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Default beat.. for now...

well the chain has gone on with the old front sprocket still on, beaten, for now.
tried the thread both ways, no joy. sprocket dont look too bad i reckon, will change it asap when i get near an air supply. gotta have the bike for work so needs must im afraid.
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