Show us your vintage mountain bikes!
02-20-13, 10:44 AM
#3127
GO BIG RED
Join Date: Nov 2008
Location: Hastings,NE
Posts: 678
Bikes: 1996 Bianchi Veloce 1993 Bridgestone MB-3 1992 Trek 700 1992 Trek 820
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My 1993 Bridgestone MB-3
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02-20-13, 10:53 AM
#3128
Cisalpinist
Join Date: Jan 2011
Location: Holland
Posts: 5,557
Bikes: blue ones.
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There is actually a technique with your regular brazing torch that uses special filler rod (silicon bronze), to lay down weld-like beads. It is often referred to as bronze welding. Here's a cool video of an Ariel Atom frame being build with that style of joining. You can also use this with a TIG torch a source of heat. The advantage is apparently very low distortion, because the heat is very localized and a little lower than with regular welding, because the parent metal isn't melted, just heated to a dull red heat. Furthermore, it's super versatile, even on odd things like stainless steels and all kinds of weird bronzes, and joining dissimilar metals is easy too, or so they say. https://www.youtube.com/watch?v=ZlLV0P6uGDw
Last edited by Italuminium; 02-20-13 at 10:56 AM.
02-20-13, 11:26 AM
#3129
rain dog
Join Date: Oct 2009
Location: Northern PA
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There is actually a technique with your regular brazing torch that uses special filler rod (silicon bronze), to lay down weld-like beads. It is often referred to as bronze welding. Here's a cool video of an Ariel Atom frame being build with that style of joining. You can also use this with a TIG torch a source of heat. The advantage is apparently very low distortion, because the heat is very localized and a little lower than with regular welding, because the parent metal isn't melted, just heated to a dull red heat. Furthermore, it's super versatile, even on odd things like stainless steels and all kinds of weird bronzes, and joining dissimilar metals is easy too, or so they say. https://www.youtube.com/watch?v=ZlLV0P6uGDw
02-20-13, 06:26 PM
#3131
Senior Member
Went to look at a Bianchi MTB, got sad, it looked much better in the pic. Saw a GT sans wheels hanging up in the guys rafters, got happy. Got it home and looked at it hard, got sad.
It's in rough shape with a stuck steel seatpost and stuck BB. But I love the paint scheme !
91 GT outpost, low man on the totem pole but it's a early-ish GT ! Dia-comp canti front and u-brake in rear. Full Suntour drivetrain. Nothing else left as it had been picked over before I got it for 10.
I'm calling the paint"" spastic tigger. I would like to save this bike but it is going to be a long term fight. Trolling through the past threads on remedies to unstuck parts.
Plans( if all goes well) will be to single speed it. Wish me luck.
It's in rough shape with a stuck steel seatpost and stuck BB. But I love the paint scheme !
I'm calling the paint"" spastic tigger. I would like to save this bike but it is going to be a long term fight. Trolling through the past threads on remedies to unstuck parts.
02-20-13, 08:09 PM
#3133
Ride, Wrench, Swap, Race
Join Date: Jan 2010
Location: Northern California
Posts: 9,194
Bikes: Cheltenham-Pedersen racer, Boulder F/S Paris-Roubaix, Varsity racer, '52 Christophe, '62 Continental, '92 Merckx, '75 Limongi, '76 Presto, '72 Gitane SC, '71 Schwinn SS, etc.
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...It's kind of interesting that when tig welding started getting used on bikes, some manufacturers only used it on their top end models. I had a nice Univega Alpina Pro frame before from around 84, and I think just the top one or two models of their ATB line that year used tig welding while the other lower models still used lugs. I guess it was just because it was novel and allowed them to use different geometry without being locked in from a specific set of angles from existing lugs. Eventually once the companies got the hang of it, pretty much all production bikes moved to welding since it was a lot cheaper to automate versus classic lugged construction.
Those first TIG'd frames might not have had the benefit of the advanced, automated welding systems that came later, and/or might have been the first to be produced by the first TIG robots on a necessarily more-limited scale.
Also, the thicker-butted tubing which enabled a lightweight TIG'd frame might have been much more expensive at first.
Those Cimmarons imo are one of the best-looking frames that ever was made on a production line.
I sold the only one I ever found to a smaller rider who could fit it, but still hope to find one in my size some day.
Last edited by dddd; 02-20-13 at 08:13 PM.
02-21-13, 05:49 AM
#3134
Senior Member
Join Date: Oct 2011
Location: Normal, Illinois
Posts: 2,714
Bikes: Trek 600 ,1980Raleigh Competition G.S., 1986 Schwinn Passage, Facet Biotour 2000, Falcon San Remo 531,Schwinn Sierra, Sun Seeker tricycle recumbent,1985 Bianchi Squadra
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Those first TIG'd frames might not have had the benefit of the advanced, automated welding systems that came later, and/or might have been the first to be produced by the first TIG robots on a necessarily more-limited scale.
Also, the thicker-butted tubing which enabled a lightweight TIG'd frame might have been much more expensive at first.
Those Cimmarons imo are one of the best-looking frames that ever was made on a production line.
I sold the only one I ever found to a smaller rider who could fit it, but still hope to find one in my size some day.
Also, the thicker-butted tubing which enabled a lightweight TIG'd frame might have been much more expensive at first.
Those Cimmarons imo are one of the best-looking frames that ever was made on a production line.
I sold the only one I ever found to a smaller rider who could fit it, but still hope to find one in my size some day.
02-21-13, 11:59 AM
#3135
Chainstay Brake Mafia
Join Date: Mar 2011
Location: California
Posts: 6,007
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Talking to a seller on CL and he sends me this in an email
I hoard old Stumpjumpers too, I have about 50 of the 1982's and 1983's
02-21-13, 12:01 PM
#3136
rain dog
Join Date: Oct 2009
Location: Northern PA
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The 85 catalog says they came in 18", 21", and 23".
I'm really enjoying the way mine is built up now. The only things I'm not crazy about are the really slack geometry (70/70) and the really long top tube. I've been looking for a suitable frame to upgrade to with slightly steeper angles but I haven't found anything yet. I'm using a short/tall stem to deal with the top tube length and I have my saddle placed pretty forward on the rails to effectively steepen the seat tube angle. It may look kind of weird but it's really comfortable for me.
I recently swapped the 175 xt crank out for a 170 Deore II and it helped alleviate some knee pain I was having on longer rides. I think my knees were flexing too much with the longer cranks.
I rode it on an overnight camping trip this weekend and it worked great. It actually seems to handle better with some front panniers. I used to not care too much about lowrider braze-ons, but these ones work perfectly with my Blackburn FL-1 rack. Just four quick allen bolts to pop it on or off.
I'm really enjoying the way mine is built up now. The only things I'm not crazy about are the really slack geometry (70/70) and the really long top tube. I've been looking for a suitable frame to upgrade to with slightly steeper angles but I haven't found anything yet. I'm using a short/tall stem to deal with the top tube length and I have my saddle placed pretty forward on the rails to effectively steepen the seat tube angle. It may look kind of weird but it's really comfortable for me.
I recently swapped the 175 xt crank out for a 170 Deore II and it helped alleviate some knee pain I was having on longer rides. I think my knees were flexing too much with the longer cranks.
I rode it on an overnight camping trip this weekend and it worked great. It actually seems to handle better with some front panniers. I used to not care too much about lowrider braze-ons, but these ones work perfectly with my Blackburn FL-1 rack. Just four quick allen bolts to pop it on or off.
02-21-13, 07:02 PM
#3137
Senior Member
Join Date: Oct 2011
Location: Normal, Illinois
Posts: 2,714
Bikes: Trek 600 ,1980Raleigh Competition G.S., 1986 Schwinn Passage, Facet Biotour 2000, Falcon San Remo 531,Schwinn Sierra, Sun Seeker tricycle recumbent,1985 Bianchi Squadra
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23 may be okay, long as I don't mind a great dealo seatpost.
02-21-13, 08:06 PM
#3138
Chainstay Brake Mafia
Join Date: Mar 2011
Location: California
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I'm excited.. just sent he the money for two vintage mtb wheelsets, both with XT hubs and one with RM-17 rims, the other with RM-20.. both should be lighter than the current wheel sets on my jamis and univega.. w00t
the RM-17s came off a Stumpjumper, the RM-20s off a Ritchey Mt Tam
the RM-17s came off a Stumpjumper, the RM-20s off a Ritchey Mt Tam
Last edited by frantik; 02-21-13 at 09:17 PM.
02-22-13, 10:31 AM
#3140
80's bikes FTW
Join Date: Oct 2012
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I'm excited.. just sent he the money for two vintage mtb wheelsets, both with XT hubs and one with RM-17 rims, the other with RM-20.. both should be lighter than the current wheel sets on my jamis and univega.. w00t the RM-17s came off a Stumpjumper, the RM-20s off a Ritchey Mt Tam
the RM-17s came off a Stumpjumper, the RM-20s off a Ritchey Mt TamOur of curiosity how much did you pay for the rm20's? I just picked up an old MTB that has RM20's just wondering how rare they are and what they are worth. I thought they were REALLY nice for being an older rim...very lightweight almost as light as my FSA's I have on my 2011 Diamondback.
02-22-13, 03:14 PM
#3141
Bicycle Repair Man !!!
I was working out at the main shop today and after I got all my tube prep done went out to the back and brought home 2 custom built Arvon mtb frames... they were built in 1988 and are some filet brazed masterpieces with graceful flowing lines, internal cable routing, and bikes that a Trek representative said "were what they wished their bikes should be".
Haven't had time to take proper pics and have to knock 25 years of shop dust off them before I do that...
Haven't had time to take proper pics and have to knock 25 years of shop dust off them before I do that...
02-22-13, 03:20 PM
#3142
Chainstay Brake Mafia
Join Date: Mar 2011
Location: California
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Our of curiosity how much did you pay for the rm20's? I just picked up an old MTB that has RM20's just wondering how rare they are and what they are worth. I thought they were REALLY nice for being an older rim...very lightweight almost as light as my FSA's I have on my 2011 Diamondback.
that seller had the wheels listed for a while and i finally decided to pull the trigger once i got the Dakar and realized the wheels weren't stock.
02-22-13, 09:08 PM
#3143
Bicycle Repair Man !!!
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Internal cable routing...
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Thinking these will look great with custom stems, hubs, and forks... the purple frame would make a beautiful all rounder / city bike methinks.
02-22-13, 09:35 PM
#3147
cowboy, steel horse, etc
Join Date: Sep 2008
Location: The hot spot.
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+ infinity! Love the green -> magenta fade one especially
02-24-13, 12:50 PM
#3148
Senior Member
Join Date: Jun 2008
Location: Atlanta
Posts: 2,978
Bikes: Cannondale T700s and a few others
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Wish I had the means to build frames. I'd love to do cable routing like that. Just looks so clean and I bet they operate better to boot.
02-24-13, 03:00 PM
#3150
Senior Member
I wish my dang income tax refund would hurry up. Trying to score a never built Koga Miyata frame. It's cheap too!!,,,,BD
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So many bikes, so little dime.
So many bikes, so little dime.