aw nuts!

muniracer · 2004-01-19, 08:19 PM

i was riding and looked down and...gasp! here is the crank with the missing piece. its not the side i crank grab with so i dont know how i lost it. i think its just a dust cap but if not...darn.

muniracer · 2004-01-19, 08:20 PM

sorry the pics are so big but here is the side with the piece.

phil · 2004-01-19, 08:33 PM

That's more than a dust cap, it's the self extractor for the crank. With that thing in, unscrewing the bolt in the centre will pull the crank off. Without it it'll just remove the bolt but leave the crank there.

I think they're threaded the same on both sides, so you should be okay; just don't lose the other one...

I haven't worked out a really satisfactory way of tightening the things. I use the end of a screwdriver (or key, if I'm in the middle of nowhere) to push them tight. Presumably you can get a special gadget to tighten them properly...

Phil

phil · 2004-01-19, 08:44 PM

Incidentally, IrfanView is a very nice little program that will shrink pictures down so you don't end up with almost 2MBs of pictures in a thread...

Phil

mike.hinson · 2004-01-19, 08:53 PM

Quote:

Originally posted by phil
...I haven't worked out a really satisfactory way of tightening the things. ...

I put a piece of spoke in each hole (as they fit well), then lever them round while holding the ends of the spoke offcuts.

/\/\

eenwieler · 2004-01-19, 08:54 PM

the link doesn't work

Ferko

muniracer · 2004-01-19, 11:38 PM

if i have a crank extracter tool then i should still be good right? just unscrew bolt, then use crank extractor as i normally would with a square tapered crank...

Sofa · 2004-01-19, 11:59 PM

I can't really tell. Can you post a larger photo?

muniracer · 2004-01-20, 04:53 AM

Quote:

Originally posted by Sofa
I can't really tell. Can you post a larger photo?

oh ho ho ho!!

gerblefranklin · 2004-01-20, 05:06 AM

Quote:

Originally posted by muniracer
if i have a crank extracter tool then i should still be good right? just unscrew bolt, then use crank extractor as i normally would with a square tapered crank...

Nope. I have the old onza, and I lost the dust cap on my non-crankgrabbing crank, too. The dust caps are reverse threaded, so a normal crank-extractor will strip out your cranks. Also, the tool for removing the dust caps is called a spanner wrench. I don't have one, so I use a hemostat (aka roach-clip for you stoners out there), or small scissors.

A note for all you onza owners: I have the old Onza, and when I took apart the cranksert, I found the bolts were tightening on the splines. I put a washer in there to rectify the problem. I reccomend you do too. It only makes the bolt stick out an extra 1/8". Also, the hub works like the profiles. Don't fully tighten the right crank, alternate. 1/2 turn right, 1/2 turn left... That way the axle stays centered in the hub. If you do one side completely first, you can pull the axle out of the hub (I'm not saying this from observation, but sadly, experience).

john_childs · 2004-01-20, 06:26 AM

Quote:

Originally posted by gerblefranklin
Also, the hub works like the profiles. Don't fully tighten the right crank, alternate. 1/2 turn right, 1/2 turn left... That way the axle stays centered in the hub. If you do one side completely first, you can pull the axle out of the hub (I'm not saying this from observation, but sadly, experience).

I did the same with one of my Profile hubs.
Threaded bolts can create a lot of force with just a little bit of twisting and can easily pull the axle through the hub.

muniracer · 2004-01-20, 07:17 AM

Quote:

Originally posted by gerblefranklin

Nope. I have the old onza, and I lost the dust cap on my non-crankgrabbing crank, too. The dust caps are reverse threaded, so a normal crank-extractor will strip out your cranks. Also, the tool for removing the dust caps is called a spanner wrench. I don't have one, so I use a hemostat (aka roach-clip for you stoners out there), or small scissors.

A note for all you onza owners: I have the old Onza, and when I took apart the cranksert, I found the bolts were tightening on the splines. I put a washer in there to rectify the problem. I reccomend you do too. It only makes the bolt stick out an extra 1/8". Also, the hub works like the profiles. Don't fully tighten the right crank, alternate. 1/2 turn right, 1/2 turn left... That way the axle stays centered in the hub. If you do one side completely first, you can pull the axle out of the hub (I'm not saying this from observation, but sadly, experience).

so how do i take the cranks off?

john_childs · 2004-01-20, 07:42 AM

Quote:

Originally posted by muniracer
so how do i take the cranks off?

You could try using an Evercraft bearing puller as in this thread.

phil · 2004-01-20, 06:18 PM

Quote:

Originally posted by gerblefranklin
Also, the tool for removing the dust caps is called a spanner wrench.

Erm... does this lose something in the translation?

Phil

john_childs · 2004-01-20, 11:29 PM

Quote:

Originally posted by phil

Erm... does this lose something in the translation?

Phil

Well then, how about a pin spanner?

Park Tool makes one.
Park Pin Spanner SPA-2
Picture of it in use

2004-01-19, 08:19 PM	#1
muniracer Hell On Wheel Join Date: Aug 2003 Location: Washington, DC Age: 27 Posts: 1,025	aw nuts! i was riding and looked down and...gasp! here is the crank with the missing piece. its not the side i crank grab with so i dont know how i lost it. i think its just a dust cap but if not...darn. Attached Images __________________ The Hell on Wheel Unicycle Gang owns you!! http://www.unicyclist.com/gallery/albuq25

2004-01-19, 08:20 PM	#2
muniracer Hell On Wheel Join Date: Aug 2003 Location: Washington, DC Age: 27 Posts: 1,025	sorry the pics are so big but here is the side with the piece. Attached Images __________________ The Hell on Wheel Unicycle Gang owns you!! http://www.unicyclist.com/gallery/albuq25

2004-01-19, 08:33 PM	#3
phil Average wheels: 1.5 Join Date: May 2002 Location: Cannock Chase, UK Age: 32 Posts: 3,382	That's more than a dust cap, it's the self extractor for the crank. With that thing in, unscrewing the bolt in the centre will pull the crank off. Without it it'll just remove the bolt but leave the crank there. I think they're threaded the same on both sides, so you should be okay; just don't lose the other one... I haven't worked out a really satisfactory way of tightening the things. I use the end of a screwdriver (or key, if I'm in the middle of nowhere) to push them tight. Presumably you can get a special gadget to tighten them properly... Phil __________________ "Cattle Prods solve most of life's little problems."

2004-01-19, 08:44 PM	#4
phil Average wheels: 1.5 Join Date: May 2002 Location: Cannock Chase, UK Age: 32 Posts: 3,382	Incidentally, IrfanView is a very nice little program that will shrink pictures down so you don't end up with almost 2MBs of pictures in a thread... Phil __________________ "Cattle Prods solve most of life's little problems."

2004-01-19, 08:54 PM	#6
eenwieler level 5 unicyclist Join Date: Apr 2003 Location: Best, Netherlands Age: 25 Posts: 94	the link doesn't work Ferko __________________ Eenwieler, Einrad, Unicycle, Monocycle. It is just the same!

2004-01-19, 11:38 PM	#7
muniracer Hell On Wheel Join Date: Aug 2003 Location: Washington, DC Age: 27 Posts: 1,025	if i have a crank extracter tool then i should still be good right? just unscrew bolt, then use crank extractor as i normally would with a square tapered crank... __________________ The Hell on Wheel Unicycle Gang owns you!! http://www.unicyclist.com/gallery/albuq25

2004-01-19, 11:59 PM	#8
Sofa you - pee - dee Join Date: Mar 2002 Location: London, Ontario Age: 38 Posts: 3,202	I can't really tell. Can you post a larger photo? __________________ Happy Life Day

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