how to remove suntour superbe front derailleur clamp
This superbe front derailleur has one of the seperate clamps that attach to the derailleur by an allen head bolt in the face of the derailleur. The derailleur came off the clamp easily, but I can't figure out how to remove the clamp from the frame. It looks like there is a bolt stud slid through 2 ends of the clamp, and one end has to come over the bolt end to be removed. I don't see a way to do this without serious damage though.
Does anyone know how to do this? I'll get pics up later tonight if needed. thanks in advance |
post a picture
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here's a pic. I forgot to mention there are little tabs on the top and bottom, and I have them pryed up already.
http://www.freeimagehosting.net/][im...9d22fd5a03.jpg |
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Slide the spacer block out from behind the bolt, that should give you enough room to push the bolt back, and lift the outer end of the clamp past it.
Alternatively, you can disassemble the frame freeing either end of the seat tube and slide the clamp off the end. |
I like the frame disassembly idea, but this is a Fuji Opus 3....so I don't think so
There doesn't appear to be a spacer block. It looks like just the bolt. and the bolt won't move. there's a couple mm of space to move the bolt, but it just won't budge |
So, I just looked at my Spb Pro FD, but it's of a different design using a typical hinged clamp. But looking at the photo again, I see what might be Philips head slotting in the end of the bolt. If there is, I suspect that it may not be a headed bolt, but a stud threaded into the block under the clamp. See if you can unscrew it.
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Originally Posted by FBinNY
(Post 11774629)
So, I just looked at my Spb Pro FD, but it's of a different design using a typical hinged clamp. But looking at the photo again, I see what might be Philips head slotting in the end of the bolt. If there is, I suspect that it may not be a headed bolt, but a stud threaded into the block under the clamp. See if you can unscrew it.
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Originally Posted by FBinNY
(Post 11774629)
So, I just looked at my Spb Pro FD, but it's of a different design using a typical hinged clamp. But looking at the photo again, I see what might be Philips head slotting in the end of the bolt. If there is, I suspect that it may not be a headed bolt, but a stud threaded into the block under the clamp. See if you can unscrew it.
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I wouldn't discard a SunTour derailleur unless I had a really good reason. Like, if it was broken, which doesn't happen too much.
Turning your bike into a fixie isn't a good reason, but that's just me. If you're changing the crankset to something that won't work with this FD, then, well, I guess that's an OK, if unsatisfying, reason. :) |
Originally Posted by mcgreivey
(Post 11775240)
I wouldn't discard a SunTour derailleur unless I had a really good reason. Like, if it was broken, which doesn't happen too much.
Turning your bike into a fixie isn't a good reason, but that's just me. If you're changing the crankset to something that won't work with this FD, then, well, I guess that's an OK, if unsatisfying, reason. :) |
Originally Posted by FBinNY
(Post 11774629)
I see what might be Philips head slotting in the end of the bolt.
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Originally Posted by FBinNY
(Post 11774490)
Alternatively, you can disassemble the frame freeing either end of the seat tube and slide the clamp off the end.
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Originally Posted by HillRider
(Post 11781125)
Someone is sure to take this suggestion seriously. I can't wait for their followup posting! :)
Oop's forgot about the Elmer's glue......:D Chombi |
OK, I'm reviving this old thread. I have what I assume is the same front derailler as the OP (pic).
I'm thinking that the stud bolt should unscrew and that the "washer" on top of the clamp arms is actually part of the stud. I assume that once the stud is out the arms can be spread and the clamp removed, correct? But also, the stud is in there good and I'm afraid of stripping it. Suggestions? LBS (yet again)? I've already hit it with penetrating oil. |
Looks like one of Suntour's continous band derailleurs, Cyclone series maybe? FBinNY was right (above). Unscrew the Phillips head on the end of the stud. Should be able to remove the left side of the clamp off the nut then. The washer is part of the stud and not a separate part.
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Originally Posted by Ranman
(Post 17340677)
Looks like one of Suntour's continous band derailleurs, Cyclone series maybe? FBinNY was right (above). Unscrew the Phillips head on the end of the stud. Should be able to remove the left side of the clamp off the nut then. The washer is part of the stud and not a separate part.
http://s89693915.onlinehome.us/img/derail/IMG_2768.jpg |
Originally Posted by Ranman
(Post 17340677)
Looks like one of Suntour's continous band derailleurs, Cyclone series maybe? FBinNY was right (above). Unscrew the Phillips head on the end of the stud. Should be able to remove the left side of the clamp off the nut then. The washer is part of the stud and not a separate part.
Originally Posted by Jeff Wills
(Post 17340690)
+1. Unscrew that stud and all will be revealed.
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Are you trying to save the FD, or simply remove it so you can mount another?
If it's only a matter of removing it, you can grab the stud with vice grips and try to turn it. Or if that fails, carefully saw through the band on the left side - where it's away from the frame - with a saw or Dremel. |
Originally Posted by jethin
(Post 17341249)
OK great. But the stud's not budging and I'm afraid it's going to strip. Any other options for removing it?
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Yes, I've tried penetrating oil. It's hard to get it in there and has had no effect so far. I don't want to strip this thing because I suppose they're pretty hard to come by.
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Originally Posted by jethin
(Post 17341388)
Yes, I've tried penetrating oil. It's hard to get it in there and has had no effect so far. I don't want to strip this thing because I suppose they're pretty hard to come by.
Good luck and Happy Thanksgiving! |
Originally Posted by Jeff Wills
(Post 17343571)
You're darn right. Perhaps Yellow Jersey has parts, but I'd try soaking it in penetrating oil first. And I mean really soak it. I would lay the frame on its side with the mounting stud facing down. Then use a couple layers of aluminum foil to mold a bowl around the stud, taped or zip-tied to the downtube. Basically, you want a container that will allow you to completely immerse both sides of that stud. Fill with your favorite penetrating oil and let sit a night or two. When you feel brave enough, remove the bowl, grip the "nut" with pliers or a Crescent wrench, and give the screw a twist. If it doesn't go one way, twist it the other- often all you need is break the corrosion up to get it going.
Good luck and Happy Thanksgiving! |
It makes sense that that stud is super tight or else it would unscrew every time you removed the FD. Try leaving the bike outside. That little bit of shrinkage from getting cold might be enough to help break it free.
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Originally Posted by Jeff Wills
(Post 17343571)
You're darn right. Perhaps Yellow Jersey has parts, but I'd try soaking it in penetrating oil first. And I mean really soak it. I would lay the frame on its side with the mounting stud facing down. Then use a couple layers of aluminum foil to mold a bowl around the stud, taped or zip-tied to the downtube. Basically, you want a container that will allow you to completely immerse both sides of that stud. Fill with your favorite penetrating oil and let sit a night or two. When you feel brave enough, remove the bowl, grip the "nut" with pliers or a Crescent wrench, and give the screw a twist. If it doesn't go one way, twist it the other- often all you need is break the corrosion up to get it going.
Good luck and Happy Thanksgiving! |
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