the other day i decided to see if i could fit a triple chain ring on my motorized bicycle it wouldn't fit so i was putting it back together and my mind wandered i ended up shearing one of the crank bolts in the spindle! now i can't find a replacement spindle anywhere. its from a raleigh maverick made around 1985 i think. brought the spindle to my local bike shop and he said he couldn't get them and i cant find any online! any help appreciated.
odd bottom bracket!
- Thread starter zippinaround
- Start date
you can try using an ez-out, left handed drill bits or some othe extractor to remove the sheared bolt.
if that doesn't work, search for an american to euro bottom bracket and replace the whole thing.
if that doesn't work, search for an american to euro bottom bracket and replace the whole thing.
Ya, I'd go with Bairdco's sound advice. You can get L.H. drill bits at most any hardware store. Just use a bit size that will work with an ez-out size that's appropriate for the job. L.H. bits will often "spin the broken bolt/fastener out" while you drill it (and you've got to drill a hole to use an ez-out anyway, so you've really got nothing to lose trying it).
Btw, a L.H. bit might cost you a couple of pounds or so.
Btw, a L.H. bit might cost you a couple of pounds or so.
yeah think i will try to remove it alright. i dont have a drill though but might have access to one on thursday so i'll try to drill it then i was thinkin of drilling it then hammer a flat screwdriver in there but i'll see how much a L.H bit is in the meantime. thanks
Here you can buy a set cheap from harbor freight. dunno if there's an equivalent place where you're at.
if you find a set, start small and drill centered and straight. keep going up a size till it screws out.
if you find a set, start small and drill centered and straight. keep going up a size till it screws out.
someone on the other forum said it was the same as some old bmx? the cups seem to be threaded alright i thought they were pressed in but i can see threads on the inside of the shell. kinda strange the way theres no notches in them to remove them tho.
If the cups are threaded in (which would be very strange) you could probably leave them in and still use the rest of the parts from a conversion kit.
You could probably also go to a one piece crank, reusing the cups with a standard bottom bracket set.
I've never seen an odd bottom bracket on a frame. there's the standard "american" large size and the smaller "euro" size.
there's split bb shell on some tandems and antique bikes that use an eccentric bottom bracket. you can rotate it around to tighten the chain. but that's probably more info than you need...
You could probably also go to a one piece crank, reusing the cups with a standard bottom bracket set.
I've never seen an odd bottom bracket on a frame. there's the standard "american" large size and the smaller "euro" size.
there's split bb shell on some tandems and antique bikes that use an eccentric bottom bracket. you can rotate it around to tighten the chain. but that's probably more info than you need...
You gotta love dime store innovation.
What you have there is a standard American Bottom Bracket tube with a conversion bottom bracket to a crappy European loose ball bearing setup.
The spindle itself is the same as any loose ball bearing Euro as far as threads for axle cones go.
You don't need any replacement parts. Just go to your local hardware store, and buy a reverse pull out drill bit. $3.00 or less usually. Before you go drilling into the sheered off bolt with it, be sure to drill a pilot hole in the bolt first with a normal steel drill bit.
Your broken bolts will spin right out with ease my friend!
You can get replacement bolts from your local hardware store for less than $0.60 , or at your LBC for a few bucks.
Hope this helps!
What you have there is a standard American Bottom Bracket tube with a conversion bottom bracket to a crappy European loose ball bearing setup.
The spindle itself is the same as any loose ball bearing Euro as far as threads for axle cones go.
You don't need any replacement parts. Just go to your local hardware store, and buy a reverse pull out drill bit. $3.00 or less usually. Before you go drilling into the sheered off bolt with it, be sure to drill a pilot hole in the bolt first with a normal steel drill bit.
Your broken bolts will spin right out with ease my friend!
You can get replacement bolts from your local hardware store for less than $0.60 , or at your LBC for a few bucks.
Hope this helps!
Or, you can buy a new bottom bracket, but it will have to be an American BB. Which in your case, if you want to stay with a 3-piece crank and be easy on the wallet....... Try my above suggestion first. Or get yourself a one piece crank, but then you'll need 1/2" pedals to go with those.
Tried tapping out one of the cups and it didn't budge its definetly threaded on anyway I think I'll go buy a cheap drill on Monday and try to remove the sheared bolt , its the cheapest option and i need a drill anyway to make a rack.
Now that I know you are in Ireland 
Seriously, can you find a left hand drill bit (You guys may use a different name)? Put the LH drill bit in, put the drill in reverse and often as soon as the hole gets a bite the sheared part will come out.
Seriously, can you find a left hand drill bit (You guys may use a different name)? Put the LH drill bit in, put the drill in reverse and often as soon as the hole gets a bite the sheared part will come out.
A good bike shop, machine shop, or an old drunk guy in a barn could probably bust it out in no time...
hey zippin I have a suggestion I know where a one piece crank with 3 gears is lying in letterkenny, pm me I could met you and show you, I am free until half 11 and 5-6 this evening and in town.
well i managed to remove the sheared bolt without buying anything! the plumber left his drill here last night so i just drilled a 5mm hole hammered in a screwdriver and out she popped!
Sometimes they are just pressed in really good, and tough as ****. I've struggled for hours on some, and have had others just fall out.
