Show us your Vintage Touring bikes
#2526
(rhymes with spook)
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Bikes: '83 univega gran turismo x2, '85 schwinn super le tour,'89 miyata triple cross, '91 GT tequesta, '90 yokota grizzly peak, '94 GT backwoods, '95'ish scott tampico, '98 bonty privateer, '93 mongoose crossway 625, '98 parkpre ariel, 2k'ish giant fcr3
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now, why couldn't they have put a barrel adjuster on the eco? seems a trivial thing and could still remain more "eco" than the ti version
#2527
Senior Member
I'll let the repressed retired manufacturing engineer in me speak for a second - Note that the stop on the ECO is formed from the same piece of metal that the parallelogram arm is made from. Other than the original expense in fabricating the forming dies, no added cost. The Ti version, on the other hand, has three additional components, a riveting operation and (likely) manual assembly of the spring and barrel adjustor. Definite increase in production cost.
#2528
(rhymes with spook)
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Bikes: '83 univega gran turismo x2, '85 schwinn super le tour,'89 miyata triple cross, '91 GT tequesta, '90 yokota grizzly peak, '94 GT backwoods, '95'ish scott tampico, '98 bonty privateer, '93 mongoose crossway 625, '98 parkpre ariel, 2k'ish giant fcr3
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perhaps. otoh, instead of bending the metal over to form the cable stops, leave it flat and drill a hole using the same barrel adjuster as the ti. moreover, use the same basic design/die for the eco as the ti, just make it all steel as they did. one die...two different materials. save even more over having two dies (i'm no engineer, but i'll mildly play the devil's advocate, here )
#2529
Senior Member
That component part in steel cost pennies, even with the cost of tooling amortized. The cost of assembling the barrel adjustor, if it had been in the factory where I worked, would have been more than a dollar. Not to mention the cost of the three additional parts.
I don't have enough experience with titanium to know whether the same dies could be used - off hand, I'd guess no, since the design of the die includes compensation for how much a particular metal "springs back" after forming.
I don't have enough experience with titanium to know whether the same dies could be used - off hand, I'd guess no, since the design of the die includes compensation for how much a particular metal "springs back" after forming.
#2530
(rhymes with spook)
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Bikes: '83 univega gran turismo x2, '85 schwinn super le tour,'89 miyata triple cross, '91 GT tequesta, '90 yokota grizzly peak, '94 GT backwoods, '95'ish scott tampico, '98 bonty privateer, '93 mongoose crossway 625, '98 parkpre ariel, 2k'ish giant fcr3
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my point is really, daka, it would still be more economical than the ti. and, ultimately, i'm just finding something pointless to gripe about...lol. i do have the idea, however, to see if i can add a barrel adjuster to mine as the suntour downtube cable stop doesn't have them. may not be doable, but i'm gonna see...dang it!
#2531
Senior Member
Point taken. The real cost difference in manufacturing is likely the more expensive raw material, the finishing and the absence of economies of scale. As to the adjustor, before indexing many derailleurs didn't have them. It only became important when fine-tuning the lateral position of the derailleur to correspond to an indexed position at the shifter was required. BITD, you'd only use the barrel adjustor, if you had one, to take up slack in the cable.
#2532
(rhymes with spook)
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Point taken. The real cost difference in manufacturing is likely the more expensive raw material, the finishing and the absence of economies of scale. As to the adjustor, before indexing many derailleurs didn't have them. It only became important when fine-tuning the lateral position of the derailleur to correspond to an indexed position at the shifter was required. BITD, you'd only use the barrel adjustor, if you had one, to take up slack in the cable.
none of my cyclone derailleurs have one, but ironically the "lesser" BL does. i like having one back there for more convenient installation and adjusting as cables stretch...ie. not having to fuss so much with the pinch bolt
#2533
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my point is really, daka, it would still be more economical than the ti. and, ultimately, i'm just finding something pointless to gripe about...lol. i do have the idea, however, to see if i can add a barrel adjuster to mine as the suntour downtube cable stop doesn't have them. may not be doable, but i'm gonna see...dang it!
#2534
(rhymes with spook)
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I Think there was probably no incentive to add an adjustable barrel to bikes being used with friction derailleurs. It looks to me like a properly sized barrel adjuster screw and nut would fit and give you the adjustment your looking for. It's a little unglamorous so I'd use the adjustable down tube hardware. They will screw into frame lugs or, if none are available, into an old clamp on style derailleur minus the levers. Understand that the screws that come with the hardware may or may not work on the old clamp-on. Sometimes the screws that came with the levers are perfect and add a touch of class to the set up.
Last edited by thook; 04-26-21 at 09:38 PM.
#2535
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what i have is a suntour clamp on downtube cable stop. i don't think barrel adjusters will work on it. i could give it a go if there's enough clearance from the frame to spin the barrels. otherwise, i have a late 70's 600 rear derailleur with an adjuster that looks like it might work on the duopar. i'm juggling honda work, little home repairs, and another bike build. but, i should squeeze in 15 min's tomorrow to look at the logistics for the adjusters
It looks like this:
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#2536
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Royce Union has a certain cache so I'm a little sad to see it go. I realize Peugeots have a following too. Sorry to be a wet blanket but the vintage look kinda got lost in the translation. All that notwithstanding it's a nice looking bike and you look very pleased with the results and that's all that really matters.👍
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#2537
(rhymes with spook)
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and, that's what i figured even if my reply didn't reflect that. i've done that, also, with an arabesque clamp on. require some dremeling to make the adjusters fit flush, but it worked nicely. i just don't want to run modern looking bits on my gran turismo. keep it vintage looking as i can
#2538
Senior Member
84 Motobecane CT2 650b with some vintage/modern components upgrades.
not the lightest frame I have but un breakable and reliable!
not the lightest frame I have but un breakable and reliable!
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#2539
(rhymes with spook)
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Bikes: '83 univega gran turismo x2, '85 schwinn super le tour,'89 miyata triple cross, '91 GT tequesta, '90 yokota grizzly peak, '94 GT backwoods, '95'ish scott tampico, '98 bonty privateer, '93 mongoose crossway 625, '98 parkpre ariel, 2k'ish giant fcr3
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#2541
(rhymes with spook)
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the barrel adjuster off of an old 600 RD will work on the eco with a little tinkering. however, i found the perfect solution for the suntour clamp/cable stop; jagwire mickey barrel adjusters. they can snug right up to the frame and still spin since the barrel has such a narrow profile. to top it off, they look the classic part....mostly . now i can fine tune both derailleurs
#2542
Full Member
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Bikes: Wow, where to start? A collection of 1980's and early 90's road, touring, and MTBs from the likes of Trek, Schwinn, Cannondale, Fuji, Miyata, Univega, Panasonic, and GT. It has gotten rather out of control.
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Run, don't walk...https://www.facebook.com/marketplace...4625428360275/
#2543
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1985 Trek 620 Cirrus
Just acquired this fine steed.
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#2544
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By automotive standards I think my '97 T900 is technically a year away from being 'classic', but close.....
1997 Cannondale T900
1997 Cannondale T900
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#2545
Extraordinary Magnitude
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Bikes: 1978 Trek TX700; 1978/79 Trek 736; 1984 Specialized Stumpjumper Sport; 1984 Schwinn Voyageur SP; 1985 Trek 620; 1985 Trek 720; 1986 Trek 400 Elance; 1987 Schwinn High Sierra; 1990 Miyata 1000LT
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Looks great! Love to see more pix of it!
__________________
*Recipient of the 2006 Time Magazine "Person Of The Year" Award*
Commence to jigglin’ huh?!?!
"But hey, always love to hear from opinionated amateurs." -says some guy to Mr. Marshall.
Commence to jigglin’ huh?!?!
"But hey, always love to hear from opinionated amateurs." -says some guy to Mr. Marshall.
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#2546
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#2548
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Bikes: Fuji Touring Series V 1985, Motobecane Grand Touring 1982, Specialized Stumpjumper 1993, Raleigh International 1972, Raleigh Grand Prix 1972, Kuwahara Count 1983, Trek Cirrus 1987, Shogun 2001 1983, Cannondale SM700 1990
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Frame bag upgrade for this summer on my Fuji Touring Series V and the Mountech FD (seized from road salt) replaced with a Cyclone
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#2549
(rhymes with spook)
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ZudeJammer love it!! and, where'd you get that frame bag?? can't quite make out the brand tag on there
#2550
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ZudeJammer love it!! and, where'd you get that frame bag?? can't quite make out the brand tag on there