Show me your lugged steel seat clusters!
#1
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Show me your lugged steel seat clusters!
I'm building frame number 1 (Columbus SPX with cast lugs) and have all of the main triangle miters completed; I'm currently cleaning up the lugs and should begin brazing early next week. Now my thoughts are turning to what is, in my opinion, one of the things that can visually make or break a bike -- the seatstay end caps. I will not be using "plug" style seatstay caps. Since this is my first frame, my inclination is to stick to something fairlly simple, probably a low angle miter with a flat end cap made out of thin plate stock, and perhaps do a semi-wrap sort of like Ebisu does.
Would any of you care to share pictures of your seatstay end designs, as well as comments on tips, tricks, and difficulties encountered in implementing the design? I'm not looking to "steal" anybody's design, I'm just looking for inspiration. FWIW, at the other end, I'll be using socketed dropouts, and the lugs are a short point design.
Thanks!
Pete
Would any of you care to share pictures of your seatstay end designs, as well as comments on tips, tricks, and difficulties encountered in implementing the design? I'm not looking to "steal" anybody's design, I'm just looking for inspiration. FWIW, at the other end, I'll be using socketed dropouts, and the lugs are a short point design.
Thanks!
Pete
#2
Decrepit Member
In Tim Sanner's class, we used a low angle miter, but instead of a flat end cap we used a piece of cut off top tube to form a concave end cap.
#3
Senior Member
Another approach you might try sometime.
https://www.bikeforums.net/showthread...ith-pics/page6
See post #82 in the thread.
https://www.bikeforums.net/showthread...ith-pics/page6
See post #82 in the thread.
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I would go with a simple design on my first frame. Flat caps are a good idea. Wrap around and semi-wrap around are a little trickier. Maybe try that on the next one.
I used a fastback that rests on a tube that replaced the seat post bolt lugs on my first frame. The only problem was that I put the seat stays too close together, and cut through the stays when I slotted the back of the seat lug.
Fixed your link, click on the number above the post and you'll get a single post. I think there are two many moving parts in that design for a first build.
I used a fastback that rests on a tube that replaced the seat post bolt lugs on my first frame. The only problem was that I put the seat stays too close together, and cut through the stays when I slotted the back of the seat lug.
Another approach you might try sometime.
https://www.bikeforums.net/showthread...=1#post6516456
See post #82 in the thread.
https://www.bikeforums.net/showthread...=1#post6516456
See post #82 in the thread.
Last edited by unterhausen; 01-21-10 at 01:09 PM.
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Yeah, cassave, that's a beautiful joint, but more than I can handle right now.
Followup question. I'm having difficulty finding 1.125" clamp front derailleurs lately (well, it's getting tougher but not impossible), so I'm thinking about going with a braze-on front derailleur. The problem is, I want to support a broader than normal chainring range for the front derailleur -- 53t would probably be max, but I'd like to be able to go as small as a 46t large chainring (both with a triple) as well. Does anyone make a front derailleur braze-on tab that has a larger than normal vertical range?
Thanks,
Pete
Followup question. I'm having difficulty finding 1.125" clamp front derailleurs lately (well, it's getting tougher but not impossible), so I'm thinking about going with a braze-on front derailleur. The problem is, I want to support a broader than normal chainring range for the front derailleur -- 53t would probably be max, but I'd like to be able to go as small as a 46t large chainring (both with a triple) as well. Does anyone make a front derailleur braze-on tab that has a larger than normal vertical range?
Thanks,
Pete
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Pete, can`t you use a shim with clamp on FD for OS seat tube? Seems to me that would look just fine, give you all the adjustability you want, and be much easier to boot. I`m looking forward to seing pictures, BTW. Hope you`re enjoying yourself!
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Hmmm...I wonder what it would look like if I brazed a cro-mo sleeve that took the OD of the front derailleur area to 31.8mm? Might not be too bad...
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Me too .... Nice work
Here's mine (a little old & rusty )
Here's mine (a little old & rusty )
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Bikes: Old steel race bikes, old Cannondale race bikes, less old Cannondale race bike, crappy old mtn bike.
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FYI: https://www.bikeforums.net/forum-sugg...ad-please.html
#10
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No plugs
just mitre {by hand}
and braze
and braze
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it's steel
it's lugs
let the others get on with the madness
www.llewellynbikes.com
www.framebuilders.org
it's steel
it's lugs
let the others get on with the madness
www.llewellynbikes.com
www.framebuilders.org
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Dazza, you're not helping here
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you mean triple triangle?
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Yeah, I had a bike shop owner (of great local repute) tell me it had to be a GT because they were the only people to ever do it that way, and they had it patented. I told him to look up Jo Routens -- my frame is a direct copy of a 1946 Routens -- but I kind of doubt it soaked into his carbon fiber addled skull...
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On my fixed gear frame: