Experimenting with drivetrain
01-10-23, 12:24 PM
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Experimenting with drivetrain
The suntour Vx-GT will do amazing stuff if 7 speeds is enough. I have odd tastes in cassettes and am experimenting for a future bike build. Current idea is
13-14-16-18-21-28-36. I was wondering what derailleur I would need. Since I have several Vx-GTs I thought I'd give it a shot. Man it just worked perfectly!
7 speeds and the truth right here.
No issue at all climbing this on a 1971 Raleigh professional.
13-14-16-18-21-28-36. I was wondering what derailleur I would need. Since I have several Vx-GTs I thought I'd give it a shot. Man it just worked perfectly!
7 speeds and the truth right here.
No issue at all climbing this on a 1971 Raleigh professional.
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01-10-23, 12:35 PM
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So its like Shimano Megarange, just beats that? Cool experiment 
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01-10-23, 12:39 PM
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There is no better cheap derailleur ever made to rival the shiny cheapness of the VXs.
Amazing little guys.
Amazing little guys.
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01-10-23, 12:48 PM
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01-10-23, 12:49 PM
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What chain ring(s) do you have up front?
01-10-23, 12:52 PM
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01-10-23, 12:58 PM
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So is your chainline inboard a little bit compared to what is considered normal? Curious for the details since your gearing experiments are consistently interesting and mirror what I need in the hills where I live. Thanks!
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01-10-23, 01:09 PM
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I love this setup. Suntour VX-GT is the best. I would love to read more about how you built this freewheel.
Please show us your Crankset, Chainrings and FD also.
Please show us your Crankset, Chainrings and FD also.
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01-10-23, 01:12 PM
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Yeah the granny will be as close to the frame as possible.
01-10-23, 01:15 PM
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Just in the experimental stage but the cassette is cobbled together from a 7 speed cassette and spacers with cogs from other cassettes. Since it's friction shifting there is wide latitude for using different cogs.
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01-10-23, 01:36 PM
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The amazing thing is that my SunTour (and very Japanese; I presume JIS) Supberbe shifters work well with no modifications on a later, 9-speed Campagnolo (I resume ISO) drivetrain. I don't know how that happened but I'll take it.
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01-10-23, 01:37 PM
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01-10-23, 02:08 PM
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The Suntour Vx-GT RD works really well with the Racheting Power Shifters. I put those together on one of my wife's bikes and she really likes the combo.
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01-10-23, 02:21 PM
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01-10-23, 03:01 PM
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Huret Duopar with its unique 2 stage pulley cage could handle a spread like this I believe. I got rid of my eco-duopar since that upper pulley squealed for lack of lube and I could find no way to service it.
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01-10-23, 03:03 PM
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Good to know, Thanks!
Tim
Tim
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01-10-23, 03:19 PM
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I have an eco but it's a bit rarer so I'd rather not use it. Great derailleur though.
01-10-23, 03:51 PM
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It's amazing how "right" Suntour got it 50 years ago.
We don't see a lot of the "show your favorite derailleur for touring" or whatever threads these days- but the V-GT Luxe was THE dominant RD for 15 or so years- up until the M730 XT units- and might even have more range than those SGS units.
We don't see a lot of the "show your favorite derailleur for touring" or whatever threads these days- but the V-GT Luxe was THE dominant RD for 15 or so years- up until the M730 XT units- and might even have more range than those SGS units.
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01-10-23, 03:52 PM
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I am not surprised that this works well, since 14-34 was a very common Nishiki 5-speed freewheel during the 1970s, and the SunTour VGTs of the day handled it with aplomb.
What really surprised one of my coworkers was that the old VGT I gave him worked well on his daughter's indexed Shimano 7-speed setup, better than the original Shimano she had destroyed in a crash.
What really surprised one of my coworkers was that the old VGT I gave him worked well on his daughter's indexed Shimano 7-speed setup, better than the original Shimano she had destroyed in a crash.
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"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
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01-10-23, 03:59 PM
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I am not surprised that this works well, since 14-34 was a very common Nishiki 5-speed freewheel during the 1970s, and the SunTour VGTs of the day handled it with aplomb.
What really surprised one of my coworkers was that the old VGT I gave him worked well on his daughter's indexed Shimano 7-speed setup, better than the original Shimano she had destroyed in a crash.
What really surprised one of my coworkers was that the old VGT I gave him worked well on his daughter's indexed Shimano 7-speed setup, better than the original Shimano she had destroyed in a crash.
01-10-23, 04:08 PM
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I am not surprised that this works well, since 14-34 was a very common Nishiki 5-speed freewheel during the 1970s, and the SunTour VGTs of the day handled it with aplomb.
What really surprised one of my coworkers was that the old VGT I gave him worked well on his daughter's indexed Shimano 7-speed setup, better than the original Shimano she had destroyed in a crash.
What really surprised one of my coworkers was that the old VGT I gave him worked well on his daughter's indexed Shimano 7-speed setup, better than the original Shimano she had destroyed in a crash.
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Commence to jigglin’ huh?!?!
"But hey, always love to hear from opinionated amateurs." -says some guy to Mr. Marshall.
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"But hey, always love to hear from opinionated amateurs." -says some guy to Mr. Marshall.
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01-10-23, 04:14 PM
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Get rid of effect of cable stretch?
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01-10-23, 04:19 PM
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