Foxy Stoat seeks Pig Posted January 13, 2018 Posted January 13, 2018 I really should complete one job at a time, anyway, while my pistons are soaking in some soapy liquid to try and free up the gunk I thought I would try and helicoil a bolt hole. When I praticised on some random metal away from the bike all went well. Now though i'm trying it for real and when screwing in the insert in the tang has broken off mid way through. So now I'm left with some thread hanging out of the hole that I cant screw in because there is no tang.Any fix for this? hope im not the first to do this Quote
oldgrump Posted January 13, 2018 Posted January 13, 2018 Hi, I would remove heli-coil, by either unwinding it with a pair of pliers or carefully pulling it back out with pliers, but be carefull of threads. then run tap back down hole and try another heli-coil, if you have same problem, you may have two long a heli-coil for hole. so is the hole deep enough for heli-coil you have? Quote
Foxy Stoat seeks Pig Posted January 13, 2018 Author Posted January 13, 2018 thanks will try that.regarding the length the helicoil looked the right length but I guess it stretches a bit, can this be trimmed down when its correctly threaded? Quote
Foxy Stoat seeks Pig Posted January 13, 2018 Author Posted January 13, 2018 Upper bolt on front left caliper Quote
Stu Posted January 13, 2018 Posted January 13, 2018 It's not reached the end of the thread has it? Quote
Stu Posted January 13, 2018 Posted January 13, 2018 You need a smaller helicoilOnce it gets to the the other side it will tighten up on you hence why it's broken the tang Quote
Foxy Stoat seeks Pig Posted January 13, 2018 Author Posted January 13, 2018 It's out. Have retapped but loathed to try another insert. It's an m10 for correct size for bolt but do I need a shorter insert? Only have one length in my pack Quote
oldgrump Posted January 13, 2018 Posted January 13, 2018 Hi as [mention]Stu[/mention] says the heli-coil is to long really, heli-coils are mark as 1, 1.5, 2D and upwards, looks like you need a 1D by the width of piece you trying to repair, so say you have a M8 heli-coil and piece is 8m/m thick, so 1D, 12m/m thick that is a 1.5D heli-coil, so the D is Depth x dia. You may be able to grind it off but I would remove and get right size . Whats the width of piece? Quote
Foxy Stoat seeks Pig Posted January 13, 2018 Author Posted January 13, 2018 The set I have is m10 X 1.5 Quote
Stu Posted January 13, 2018 Posted January 13, 2018 I may have one I can post to you if your not in a rush? I would have to check first I'm out at the min Quote
oldgrump Posted January 13, 2018 Posted January 13, 2018 Hi, What's it say on your pack? M10 x 1.25 x 1.5D? Quote
Foxy Stoat seeks Pig Posted January 13, 2018 Author Posted January 13, 2018 Hi, What's it say on your pack? M10 x 1.25 x 1.5D? Pack just says M10 x1.25 Quote
Foxy Stoat seeks Pig Posted January 13, 2018 Author Posted January 13, 2018 I may have one I can post to you if your not in a rush? I would have to check first I'm out at the min Very kind offer Stu, just having a look on eBay to see how quickly I can get one, assuming I order the right size of course. Quote
Stu Posted January 13, 2018 Posted January 13, 2018 I may have one I can post to you if your not in a rush? I would have to check first I'm out at the min Very kind offer Stu, just having a look on eBay to see how quickly I can get one, assuming I order the right size of course. Well the offer is there of you need it providing I do have one which I'm positive I have as I had the same job as you last year Quote
Foxy Stoat seeks Pig Posted January 13, 2018 Author Posted January 13, 2018 I may have one I can post to you if your not in a rush? I would have to check first I'm out at the min Very kind offer Stu, just having a look on eBay to see how quickly I can get one, assuming I order the right size of course. Well the offer is there of you need it providing I do have one which I'm positive I have as I had the same job as you last year I doubt that it was the same job Stu. I would bet a good amount of money yours wasn't the clusterf**k mine has become. looks like taking the car to work this week..... Quote
Stu Posted January 13, 2018 Posted January 13, 2018 Well yeah I got the right size to begin with And mine was the rear caliper Quote
oldgrump Posted January 13, 2018 Posted January 13, 2018 Hi, just looked at what I've got, but only 10m/m are 1.5 thread which won't do otherwise might have dropped one up to you tomorrow, if mates want do breakfast at Popham. Sorry can't help. Quote
Foxy Stoat seeks Pig Posted January 13, 2018 Author Posted January 13, 2018 Ok so I have this clear in my head I need to order m10x1.5x1d inserts? Quote
oldgrump Posted January 13, 2018 Posted January 13, 2018 Ah, Normally the Brake caliper bolts, when they are 10m/m are M10 x 1.25 thread, not M10 x 1.5 thread, because they normally go Metric fine for larger bolts. So you may well have the wrong kit anyway. I maybe wrong on this, having nothing in workshop at moment, it is the same bolt as used on the FJR1300, so if [mention]Stu[/mention] could help with thread pitch???????? Quote
Stu Posted January 13, 2018 Posted January 13, 2018 Ah, Normally the Brake caliper bolts, when they are 10m/m are M10 x 1.25 thread, not M10 x 1.5 thread, because they normally go Metric fine for larger bolts. So you may well have the wrong kit anyway. I maybe wrong on this, having nothing in workshop at moment, it is the same bolt as used on the FJR1300, so if @Stu could help with thread pitch???????? Off the top of my head I can't remember the pitch and I'm not even sure if it says on the pack either! All I know is they fit mine I'm out shopping with the wife at the min so can't check But M10 x 1.25 seems to ring a bell Quote
Foxy Stoat seeks Pig Posted January 13, 2018 Author Posted January 13, 2018 The kit I have is m10 X 1.25 Quote
oldgrump Posted January 13, 2018 Posted January 13, 2018 ok then, just in earlier thread you said M10 x 1.5, so yes you need M10 x 1.25 x 1D insert. Quote
Bianco2564 Posted January 13, 2018 Posted January 13, 2018 You can shorten the coil by snipping one thread off at a time with some decent side cutters.You should be able to work out how long you need by measuring the thickness of the fork leg and calculating how many pitches there are.My advice about removing stuck inserts is not to pull out with pliers as you can remove some of the thread aswell.Carefully unwind the insert with pliers or you can buy a special tool which is a v shaped blade which digs into the insert when turned anti clockwise. Quote
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