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Post by cusqueno on Jun 9, 2014 15:39:02 GMT
I had success in removing a stuck Viscount crank yesterday, where the spindle was still stuck in the BB bearings. Although it smacks of my usual brute force methods, I did at least use the right tool. This was a set of wedges sold for releasing drill chucks that are held on tapers. I bought them here where I found that they were cheaper than eBay. The JT6 version is the one to go for, since JT1 and JT2 have openings too small to go arount the bottom bracket spindle and JT3 seemed a bit big. Since the wedges are a maximum of about 3mm thick each, it was necessary to pack out the gap between bottom bracket shell and the crank. I used a large spanner I have (made from sheet steel, rather than cast or forged, therefore flat and tough). Then it's a matter of sliding the pair of wedges in and pushing them together so that everything is held in place. Then rest the end one wedge on something firm and hard and bash the other end of the other wedge with a hammer so that the two come together and force the crank off the spindle. Of course it might just pull the spindle through the bearings a bit, if that isn't as firmly stuck as you thought ... It's probably easier to do than explain. Afraid I didn't take an action photo. Now all I need to do is to extract the bearings and spindle. (Calls for Stella and her bearing puller.) Of course, this isn't limited to Viscount cranks - should work for any square taper crank that can't be removed any other way (usually because the extractor threads are damaged). |
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Post by Stella on Jun 9, 2014 17:55:07 GMT
Congratulations! And sometimes you just need a bit of brute force. I think I have a fairly good idea of what you were doing and love that idea.
I'm afraid I don't have a bearing puller, but at least I can pull the spindle. Normally, one bearing comes out with it, and the other one can be tapped out. I really need a collet!
Name time and date and I'll pop by, also to pick up the FD and a chat. :-)
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Post by Stella on Jun 26, 2014 18:53:08 GMT
I have exactly that problem and my rally bike. Upon test riding it today, I felt the left hand pedal was a bit wonky, thinking to myself, that I'd bought a bent pedal, which made me grumble. Not so much: the thread of the crank was stripped, which I found out upon further investigation. So, thought to myself to get that bloody crank arm off and put on another one, but, unfortunately, even though using the right crank extractor and that accordingly, the thin strip of thread stripped, too. Now I have the crank stuck on the BB and am trying to wedge it off. Have a feeling it may not work, so I'll have to take off the other one (hopefully it won't strip), then see if I can pull the spindle through, pushing the crank off the spindle, before getting the BB back in place.
Stress you don't need before the big day. Had quite a few things going wrong with the bike: scratched already from parts moving across the frame. The lacquer doesn't seem to do the trick. Not happy about this all, I can tell you this much.
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Post by velocipete on Jun 26, 2014 19:07:30 GMT
Well best of luck anyway Stella.What doesn't kill you makes you stronger.We all know that's rubbish!
It's infuriating crap nobody needs!
See you on Saturday.
Cheers,
Pete.
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Post by Stella on Jun 26, 2014 19:47:24 GMT
That's exactly how I feel. I'm just worried I won't get the bike ready by tomorrow, and that would mean I'll have to leave the wonderful bike--the one I've been preparing for weeks for the rally, at home and take my red flash. Nothing wrong with the red flash, but having to throw the towel so close to finishing is heart breaking. I'll enquire about heli coil tomorrow. Maybe that'll do the trick and it's less effort for now.
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Jem
Viscount
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Posts: 3,391 
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Post by Jem on Jun 26, 2014 20:13:59 GMT
I feel your pain Stella, but if it comes to it then any bike will do for the weekend. But I understand why you feel that way. I left it too late to even clean my Aerospace Sport for last years Rally & consequently felt a touch shabby.
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Post by Stella on Jun 26, 2014 20:41:12 GMT
Thanks, guys. I know any bike would be good, but this bike was built for the event. Grrrrrrrr. May just try riding it without a bolt and the wonky pedal in it. Thread's stripped anyway, nothing more that can go wrong, but it may do the trick and be the least destructive. I'm just really, REALLY annoyed with this situation. And I've got some other things going on, too.
Ah, most important is that I turn up, and that on a Viscount, and we'll have fun. Which reminds me that I have to look up the route from the station to the campsite. ;-)
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Jem
Viscount
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Posts: 3,391
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Post by Jem on Jun 26, 2014 20:56:55 GMT
I posted the route from station to camp site on another thread. I forget which. But it is pretty straightforward if you check the map I attached.
Any problems just phone me.
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Post by velocipete on Jun 26, 2014 21:08:56 GMT
Stella,just remembered,I'm bringing an Apex 52/42 chainset that came off Frank N Stein,If that would be any use?
Cheers,
Pete.
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Post by Stella on Jun 26, 2014 21:27:02 GMT
Cheers, Jem. I'll have a look.
Pete: Thank you, my dear, but possibly not for the rally bike as I'm having the porthole chain ring on the bike. Plus I need to get from my house to Eusten Station and then to the camp, and I really don't want to get into mechanics on the day of the day. :-)
If you can't find a home for it: I have more bikes to build and I love the Apex, but I'm sure there are others who need a chain ring more urgently than me.
Me, I have two left hand cranks with stripped thread. Maybe it's just me being stupid, but then the right hand should be stripped, too, right?
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Post by Stella on Jun 27, 2014 10:40:32 GMT
Halfway through the process. Since riding the bike without bolt didn't do the trick (why is it that cranks come loose when you don't need it, but don't if you do?), I had to resort to cowboy methods: taking off the DS crankset, which came off nice and easy, then hammer the spindle through the bearings (my heart bled), then shoving the crank off the spindle.
Now I'm swapping crank arms, taking the ones that came with the Lambert. I know the NDS is also stripped, but at least the pedal thread's good. At the moment it looks like I'm going to be on the special bike after all. Phew!
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Post by Stella on Jun 27, 2014 16:13:47 GMT
Good news: I've fixed the problems, even though it was super stressful for me. I'm now left with extreme screaming rear brakes, which I'll have to fix tomorrow. It rides well, loos stunning, and gets lots of attention. Just the way I like it.
I'm breathing a sigh of relief and remain positive that we'll have a sunny day.
See you all tomorrow.
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Jem
Viscount
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Posts: 3,391
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Post by Jem on Jun 27, 2014 22:46:28 GMT
Your tent is ready & waiting.
We've got quite a few on site. I wish I could post pics but the signal is crap.
Just got back from pub !
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Post by Stella on Jun 29, 2014 15:12:32 GMT
And as you know, that tent did a good job protecting me from the rain. :-)
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rmw
Viscount
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Post by rmw on Jun 30, 2014 17:25:55 GMT
And the Viscountess was well worth the effort and appreciated by all and sundry.
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Post by Stella on Jul 1, 2014 10:17:18 GMT
And the Viscountess was well worth the effort and appreciated by all and sundry.  |
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