Broken thread on crank

[RE8ELD0G]

Well, my catalog special turned up today.
Matt black with neon green stickers it looks vaguely exciting.

But just my luck, 4 miles from home on my first ride in years and ............the crank bearing go lose.
The lock ring had worked lose and then the bearing cap followed. (should have checked it for tightness...)
Pushed the bike home to have a look to find the thread on the bearing cap are all buggered.......
Tried to put it back on as straight as i can and did the lockring up tight and it seems to be ok.
Will find out tomorrow when i go out again to try it.

Is there any way of sorting the threads on these or do i need to get a sealed crank to sort it???
Would a bike shop have a tool to re thread it as its so big a hole???

Thanks

[Ray Young]

Back to the suppliers to sort that out if you ask me. Nothing should have been loose in the first place and if you had done nothing to it and found the thread on the bearing cap to be buggered then it was probably that way when you got it. Hassle to send it back I know but the manufacturer/supplier are at fault.

[RE8ELD0G]

I know i should send it back but i would rather try and sort it on my own.
Returning it would take a month before they even look at it, then i will either have to wait for a repair or for a new one.
A lot easier and quicker to get it sorted on my own.
If it was from a local shop then no problem but with a catalog they would probably just say it was my fault and that i cant return it anyway.

I will speak to my local bike shop tomorrow and see what they say.

[Matt]

They should be able to chase the threads and fit a new bottom bracket.

Probably looking at about £50-60 to do

I'd be sending it straight back!

[RE8ELD0G]

Well the fix i did yesterday lasted a whole.........200m......
The local bike shop will chase the thread out for me for £20, and if that wont work they said i should look at getting a sealed cartridge.
I dont know what one is or if they are any good.

Can someone please let me know if this is the way to go and if they are any good.
Also some links to where i can get a deacent and i would be very grateful.

Thanks

[Richpips]

Presuming the bottom bracket is square taper you'll need one of these if the threads are history.

http://store.velo-orange.com/index.php/ ... ckets.html

[Bearbonesnorm]

I'd get the shop to chase the thread ... hopefully it's not knackered. Then ask them to throw the BB in the nearest bin and fit a Shimano sealed cartridge square taper BB (like in the top picture).

As Rich says, if the threads are knackered then the BB in his link (bottom picture) is designed to expand when fitted and 'grip' the inside of a frame rather than relying on the threads.

[RE8ELD0G]

I have spent the night reading up on these sealed units.
Im thinking its the way im going to go.
Will save myself some money and just buy one from ebay and fit it myself (plenty of youtube vids on it and looks easy enough)

Just need to know what is the best make, as ive heard the YST ones are crap.
But i cant afford the Velo Orange one and the tools to fit it.

Are the Acor ones anygood?

[Bearbonesnorm]

Don't mess about, just buy a Shimano one, it'll last years ... http://www.chainreactioncycles.com/shim ... -prod71369

You need a 68mm English thread but you'll need to measure the length of the spindle of your existing unit and buy the same length, eg 113mm.

You'll also need a BB tool ... http://www.chainreactioncycles.com/weld ... -prod86711 and a crank extractor too ... http://www.chainreactioncycles.com/x-to ... -prod10181

Just remember that the BB thread on the driveside is left handed

[Dan_K]

Can I ask why you didn't return the bike if it's fallen to bits on the day you bought it?

[RE8ELD0G]

It will cost me over £20 to send it back by courier. not including the extras for insurance.
It will be weeks before they even look at it, then more weeks while they decide to either fix it or send me a new one.

I can fix it myself for the price of the courier and i dont lose my bike for weeks on end.

It took them 4 months to repair my little sisters phone that arrived broken, and thats not including sending out the totally wrong phone as a replacement.

The only reason i used a catalog was i cant afford to stump up a few hundred in cash for a bike, wish i had just waited for the local auctions now.

[RE8ELD0G]

Don't mess about, just buy a Shimano one, it'll last years ... http://www.chainreactioncycles.com/shim ... -prod71369

You need a 68mm English thread but you'll need to measure the length of the spindle of your existing unit and buy the same length, eg 113mm.

You'll also need a BB tool ... http://www.chainreactioncycles.com/weld ... -prod86711 and a crank extractor too ... http://www.chainreactioncycles.com/x-to ... -prod10181

Just remember that the BB thread on the driveside is left handed

I need a threadless one.

[Bearbonesnorm]

I need a threadless one.

Because the threads in the frame are now knackered?

[RE8ELD0G]

It seems so.
As soon as i put sufficient weight on the pedals to go up hills etc the left side pops out a few threads and the wobble starts.

[Charliecres]

I hate to say it but the only sensible thing to do is send the bike back and get your money back. There really is no sense in spending more trying to fix something that's obviously very poor quality. Your money would be much better spent on a cheap second-hand mtb from gumtree or ebay.

Or, if you're feeling brave, head over to singletrackworld forum, explain your situation and your budget and see what people have lying about in their sheds. There are some muppets on the forum but people are generally very helpful to enthusiastic newcomers with not much money but lots of enthusiasm.

[RE8ELD0G]

Like i said before, i dont have the money to buy a bike outright. Im a house husband, so catalog is the only way i can get expensive things.

I have emailed them now and asked if they will pay for the repairs rather than sending it back and associated costs etc.
They may offer to let the local place do the repair and that keeps me with a bike.
If not then im just gonna get the parts and fit a threadless bracket.

All parts that go on this will end up on my better bike when i can afford the On-One frame i want. (when i get back into work that is.....)

[Dan_K]

Like i said before, i dont have the money to buy a bike outright. Im a house husband, so catalog is the only way i can get expensive things.

I have emailed them now and asked if they will pay for the repairs rather than sending it back and associated costs etc.
They may offer to let the local place do the repair and that keeps me with a bike.
If not then im just gonna get the parts and fit a threadless bracket.

All parts that go on this will end up on my better bike when i can afford the On-One frame i want. (when i get back into work that is.....)

Fair enough. Got a link to what you've bought and I may have a few bits spare I can send your way to help get you going. Think I've at least got some mudguards and bags going.

[Dan_K]

Ok, seen on your other post that you've got a 26" wheeled bike. Pm me your address and I'll chuck a few bits in the post to you, crud guards, carradice saddlebag etc...

[Charliecres]

Good luck. I just hate to think of you throwing good money after bad.

[johnnystorm]

Good luck. I just hate to think of you throwing good money after bad.

Just send it back and get a refund, reject it as unfit for purpose, etc. Plenty of proper bike shops doing 0%.

[RE8ELD0G]

I have taken the advice of you folks and am now in the process of sending it back to them.
I wont be getting another one as i have had a very generous offer from a member on here.

I cant believe the kindness and generosity of folks towards a new member on this forum.

I am in amazement and awe.
I hope to be able to pay these fine folk back in some way.

Thank you all again for your offers and help..

Martin

[jameso]

Kind offers Dan_K.
I thought I had a spare BB and chainset, but I have more than that after a recent garage sort-out. I've just PM'd RD about this first as it may seem odd to offer 1/2 a bike or more but BBB is a good place and I've got some kit that needs a home. Maybe there's enough spares out there to complete a bike. Postage cost/faff has killed the value of a lot of parts now but a spares whip-round could make something more valued right?

I have a Ridgeback Dual Track 29er 17" Al frame with headset that should be a good match for him size-wise, but it's intended for 460-470mm forks and I only have some Fortitude 445mm forks - a bit short really but I'd swap the forks with someone if they can fwd Martin a longer rigid set for this?
I thought I had wheels but only a rear, Mavic A119 on non-disc Deore, so a swap there maybe. Tyres, check. Genesis bar, stem, post, saddle. 8spd combined Alivio shift/brakes or older used 9spd pods and some basic V levers. Some NIB Clarkes cable disc calipers and rotors. Should have F+R mechs but need to check. No chainset apart from a basic steel single ring on square-taper alu crank arms. All kit that could swap onto an On-One or similar in future anyway.

[Ray Young]

I have deore triple square taper crank arms but no rings, 68mm mm bb and a pair v8 copy pedals if they are any good.

[slarge]

Stick a shortage list up in here as I have an embarrassing amount of spares that I can't be bothered to sell and would rather it went to a good home than sat in a box in my garage.
I am sure I am not the only one...

[RE8ELD0G]

You folks are all lovely amazing people.