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Technical & Reference Section => Tech and Restoration => Topic started by: LucyLastic on February 28, 2007, 10:26 PM

Title: How do I get my 1 piece cranks off?
Post by: LucyLastic on February 28, 2007, 10:26 PM

I've undone the all the nuts but I can't prise the black 'bearing covers' out of the frame.  They are plastic with metal inserts so worried about damaging either the plastic or the chrome.  Any suggestions welcome.  Want to get them off so I can replace the spider with a power disk.

(http://www.radbmx.co.uk/archive/albums/g116/annadapter/IMG_0693.jpg)
(http://www.radbmx.co.uk/archive/albums/g116/annadapter/IMG_0697.jpg)

lou

Title: Re: How do I get my 1 piece cranks off?
Post by: LXIX on February 28, 2007, 10:33 PM

i think you still have a nut over the bearing????????????? undo that nut ,the use a screwddiver and hammer to knock out the  sealed bearings

Title: Re: How do I get my 1 piece cranks off?
Post by: LucyLastic on February 28, 2007, 10:34 PM

I have removed the nut showing in the pic.  I'll have a go, thanks for that  :daumenhoch:

Title: Re: How do I get my 1 piece cranks off?
Post by: LXIX on February 28, 2007, 10:37 PM

yes i can see you have undone one but it looks like there is another one over the bearings

Title: Re: How do I get my 1 piece cranks off?
Post by: lazychubs on February 28, 2007, 10:50 PM

and the cups are not fitted right still sticking out lol

Title: Re: How do I get my 1 piece cranks off?
Post by: adeshere on February 28, 2007, 11:02 PM

I see your problem, just take a hacksaw and cut off one of the arms, then just pull it through   :LolLolLolLol:

Title: Re: How do I get my 1 piece cranks off?
Post by: SteveG on February 28, 2007, 11:03 PM

If it's like the Tioga sealed bearing BB I had the you need to unscrew the second nut as LXIX says. The outer one you have already undone is only there to stop the inner one coming loose, its this inner one that fits inside the bearing. Hope this helps.

Title: Re: How do I get my 1 piece cranks off?
Post by: LucyLastic on March 01, 2007, 08:23 AM

Thanks guys.  I have undone all the nuts, I'll have another go tonight. 

Also I intentionally didn't fully mount them yet, I put the cranks on and knocked them in lightly to see what they looked like, as I knew I wanted to take them off again, that's why they're not in fully but its just I couldn't get them off again.   ::)

I bet you're all thinking 'bloody women'  ;)

Title: Re: How do I get my 1 piece cranks off?
Post by: oberonspacefruit on March 01, 2007, 08:27 AM

is that in a dog bed?

Title: Re: How do I get my 1 piece cranks off?
Post by: harris on March 01, 2007, 08:27 AM

no worries lucy ,you just ask if you get stuck thats what the forums partly for.

Title: Re: How do I get my 1 piece cranks off?
Post by: LucyLastic on March 01, 2007, 08:29 AM

Quote from: oberonspacefruit on March 01, 2007, 08:27 AM

is that in a dog bed?

It is, I nicked it off the dog so the padding would protect my frame and it wouldn't get scratched  :)  Dog was ok, he was lying on the floor  ;)

Title: Re: How do I get my 1 piece cranks off?
Post by: oberonspacefruit on March 01, 2007, 08:37 AM

(http://z.about.com/d/cameras/1/0/v/2/sadDog.jpg)

Title: Re: How do I get my 1 piece cranks off?
Post by: LucyLastic on March 01, 2007, 09:44 AM

I've told a white lie, really, I had to trade him the sofa for it  ;D

Cute dog, is he yours?

Title: Re: How do I get my 1 piece cranks off?
Post by: RATTY on March 01, 2007, 10:06 AM

Lou, if your stuck bring said dog frame down to Braintree sunday, im sure we can sort it out for you!!!

Title: Re: How do I get my 1 piece cranks off?
Post by: LucyLastic on March 01, 2007, 10:16 AM

Thanks Ratty but can't do this Sunday, unfortunately.  I'll be fine, just need to dig the crowbar and mallet out of the shed.... ;)  If that fails, I'll tie the frame to the fence and a rope round the cup and tie that to the back of the car.  This thing is not going to beat me  >:D    :LolLolLolLol:

Title: Re: How do I get my 1 piece cranks off?
Post by: RATTY on March 01, 2007, 11:00 AM

PMSL, Lou you have turned into a nutter, been on rad to long me thinks :shocked:

Title: Re: How do I get my 1 piece cranks off?
Post by: SteveG on March 01, 2007, 12:26 PM

Its a job to see from the photo, normally you undo the locknut and bearing cup and it all falls out, but if its all tight it won't move enough to let you get the crank out.  Is there any way you can get a puller of some sort on the bearing cup to pull it out without damaging it ?
Hope you get it sorted out.

Title: Re: How do I get my 1 piece cranks off?
Post by: Waxintaxin on March 01, 2007, 01:49 PM

I had real problems with some tioga sealed one piece and did have to cut the crank LOL

Title: Re: How do I get my 1 piece cranks off?
Post by: FuNMoNsTeR on March 02, 2007, 01:24 PM

Here you go Lucy...Maybe this will help. Its a great site  :daumenhoch:

http://www.parktool.com/repair/readhowto.asp?id=92

Title: Re: How do I get my 1 piece cranks off?
Post by: LucyLastic on March 02, 2007, 01:31 PM

Thanks FunMonster!  :daumenhoch:

p.s. is that you in your avatar ?  ;)

Title: Re: How do I get my 1 piece cranks off?
Post by: FuNMoNsTeR on March 02, 2007, 01:43 PM

Quote from: LucyLastic on March 02, 2007, 01:31 PM

Thanks FunMonster!  :daumenhoch:

p.s. is that you in your avatar ?  ;)

No Lucy ... My muscles are like knots in cotton  :)