Miyata Six Ten
#1
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Miyata Six Ten
Just scored a green Miyata Six Ten beauty for $180. I put some Tektro ergo brake levers on and replaced the seat. The tires are gumwall Kenda 27"x1 3/8. I don't think that's original but they are almost new. I plan on doing one more thing: replace the cassette with a Shimano 7 Speed Megarange. Other than that I will just ride it as is. I was thinking of getting a Nitto Technomic to raise the handlebar a little more towards seat height but I will see if I can get used to the slightly more aggressive position. My plan is to do some light overnight touring on this. I tried to post a picture but I don't have enough posts!
EDIT: I have enough posts
EDIT: I have enough posts
Last edited by zenolee; 06-19-19 at 08:45 PM.
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#2
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I wouldn't be too quick to add a Megarange. The triple on the Six Ten allows for pretty low gears.
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Welcome to the fold. Miyatas rock. Dont know if u need the megarange but i till say they work very well.
#4
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You might have some trouble with the 7 speed freewheel- as it was probably designed for a 5 speed rear end. You can usually get 6 speed to fit.
I’m looking forward to pix! I fully support the use of the Technomic- beware, on smaller bikes, there’s less headtube- so the stem can seem to be WAY up there.
Good luck!
post more!
I’m looking forward to pix! I fully support the use of the Technomic- beware, on smaller bikes, there’s less headtube- so the stem can seem to be WAY up there.
Good luck!
post more!
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#5
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A Technomic Deluxe Is a good choice if you need more height but not as much as a Technomic - the quill is 190mm instead of 225. It’s also possible to cut a Technomic down a bit, but you would likely need a different bolt if you take much off.
https://www.benscycle.com/nitto-ntc-...ng_870/product
As seen here:
https://www.benscycle.com/nitto-ntc-...ng_870/product
As seen here:
Last edited by due ruote; 06-17-19 at 11:32 AM.
#6
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#7
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Which Suntour rear derailleur are we talking about?
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#8
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Specs copied from website:
- Derailleur brands: SunTour
- Categories: SunTour - the mountain bike gears, SunTour - Frank Berto and the curse of Duopar
- Country: Japan
- Date of introduction: 1982
- Date of this example: 1982 (two letter date code is YE)
- Model no.: 4900
- Weight: 273g
- Maximum cog: 34 teeth (Source: Sutherlands fourth edition)
- Total capacity: 34 teeth (Source: Sutherlands fourth edition)
- Pulley centre to centre: 65mm
- Index compatibility: friction
- Chain width: 3/32”
- Logic: top normal
- B pivot: three pivots, rear unsprung and the other two sprung
- Materials: largely aluminium with steel pulley cage plates, link element plate and inner parallelogram plate
#9
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You might have some trouble with the 7 speed freewheel- as it was probably designed for a 5 speed rear end. You can usually get 6 speed to fit.
I’m looking forward to pix! I fully support the use of the Technomic- beware, on smaller bikes, there’s less headtube- so the stem can seem to be WAY up there.
Good luck!
post more!
I’m looking forward to pix! I fully support the use of the Technomic- beware, on smaller bikes, there’s less headtube- so the stem can seem to be WAY up there.
Good luck!
post more!
#10
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Unfortunately I can't post any links or pictures until I pass the 10 post limit. It's SunTour MounTech
Specs copied from website:
Specs copied from website:
- Derailleur brands: SunTour
- Categories: SunTour - the mountain bike gears, SunTour - Frank Berto and the curse of Duopar
- Country: Japan
- Date of introduction: 1982
- Date of this example: 1982 (two letter date code is YE)
- Model no.: 4900
- Weight: 273g
- Maximum cog: 34 teeth (Source: Sutherlands fourth edition)
- Total capacity: 34 teeth (Source: Sutherlands fourth edition)
- Pulley centre to centre: 65mm
- Index compatibility: friction
- Chain width: 3/32”
- Logic: top normal
- B pivot: three pivots, rear unsprung and the other two sprung
- Materials: largely aluminium with steel pulley cage plates, link element plate and inner parallelogram plate
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#11
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I am a few posts shy of being able to post pics. Is there a way of identifying how the upper pulley is "built into" the unit?
#12
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#13
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#14
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The ones with the block lettering have the upper pulley captive in the arm. Those are bad.
The ones with the script lettering have a standard upper pulley system. Those aren’t quite as bad- not quite “good” though. I had one with the huge 13T lower pulley. I wanted to love it because it was so quirky weird/cool. But it just didn’t shift “Suntour” well. IMO- the triple pivot idea was totally unnecessary with the slant parallelogram. And ask yourself what you need a spring loaded, captive pulley for... I have one of the Suntour triple pulley derailleur that shifts GREAT. Much better concept - but SIS was about to steal the show.
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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.
Last edited by The Golden Boy; 06-19-19 at 12:17 PM.
#15
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And then dirt and grit get in there, and then the pulley seizes, and the derailleur goes into the spokes.
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"But hey, always love to hear from opinionated amateurs." -says some guy to Mr. Marshall.
Commence to jigglin’ huh?!?!
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#16
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From my experience with a 1984 Mountech (the one with the internal spring), and having rebuilt that one early on, I wouldn't expect trouble from it unless you are mountain-biking or riding in a very dirty environment.
As bad as people say they are, mine survived years of use after my initial six months of hard off-road use, and after which I did milder riding mostly on the road, but still with many trail rides thrown in.
I consider the early rear Mountech to be disposable when the top pulley becomes very worn in terms of it's bushing freeplay, since I can't remember ever identifying a convenient source for such a replacement pulley.
As bad as people say they are, mine survived years of use after my initial six months of hard off-road use, and after which I did milder riding mostly on the road, but still with many trail rides thrown in.
I consider the early rear Mountech to be disposable when the top pulley becomes very worn in terms of it's bushing freeplay, since I can't remember ever identifying a convenient source for such a replacement pulley.
Last edited by dddd; 06-19-19 at 04:26 PM.
#17
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From my experience with a 1984 Mountech (the one with the internal spring), and having rebuilt that one early on, I wouldn't expect trouble from it unless you are mountain-biking or riding in a very dirty environment.
As bad as people say they are, mine survived years of use after my initial six months of hard off-road use, and after which I did milder riding mostly on the road, but still with many trail rides thrown in.
I consider the early rear Mountech to be disposable when the top pulley becomes very worn in terms of it's bushing freeplay, since I can't remember ever identifying a convenient source for such a replacement pulley.
As bad as people say they are, mine survived years of use after my initial six months of hard off-road use, and after which I did milder riding mostly on the road, but still with many trail rides thrown in.
I consider the early rear Mountech to be disposable when the top pulley becomes very worn in terms of it's bushing freeplay, since I can't remember ever identifying a convenient source for such a replacement pulley.
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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.
#18
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From my experience with a 1984 Mountech (the one with the internal spring), and having rebuilt that one early on, I wouldn't expect trouble from it unless you are mountain-biking or riding in a very dirty environment.
As bad as people say they are, mine survived years of use after my initial six months of hard off-road use, and after which I did milder riding mostly on the road, but still with many trail rides thrown in.
I consider the early rear Mountech to be disposable when the top pulley becomes very worn in terms of it's bushing freeplay, since I can't remember ever identifying a convenient source for such a replacement pulley.
As bad as people say they are, mine survived years of use after my initial six months of hard off-road use, and after which I did milder riding mostly on the road, but still with many trail rides thrown in.
I consider the early rear Mountech to be disposable when the top pulley becomes very worn in terms of it's bushing freeplay, since I can't remember ever identifying a convenient source for such a replacement pulley.
It looks clean. The bike itself seems pristine. It has the original freewheel, from what I can tell, and it is hardly worn. I will keep an eye out for the suspected mechanical failure and also keep an eye out casually for another RD
#19
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Finally passed the 10 post limit so I've edited the first post with a picture
#20
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Drive side photos, please!
I'm not saying that, I'm just saying what I'm sure many others are thinking.
Nice bike.
I'm not saying that, I'm just saying what I'm sure many others are thinking.
Nice bike.
#21
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#22
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Sweet, and beautiful bike!
Drive Side Pix!
Drive Side Pix!
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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.
#23
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Thread Starter
Drive side pic, as requested
btw, I had a chain failure and repaired it by removing 4 links so I had to stay mostly in granny gear for most of the day for my 40 mile ride
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Nice bike OP. Btw if a 7 speed mega range is too wide to fit they do make a 6 speed - picture attached to show how I know - went through this in March. If you need a new chain I recommend A SRAM PC 830 with quick link in my experience they work very well with 5,6 and 7 speed bikes.
In my case a 7 speed FW would kinda sorta fit but not with enough room to shift into the smallest cog, the 6 speed works fine on my 84 Novara Randonee, Enjoy the 610, I don't think you will find many negative comments about Miyata's on this forum, I have had to two pass through my hands and enjoyed them both.
TZ30 on the left is the 6 speed
In my case a 7 speed FW would kinda sorta fit but not with enough room to shift into the smallest cog, the 6 speed works fine on my 84 Novara Randonee, Enjoy the 610, I don't think you will find many negative comments about Miyata's on this forum, I have had to two pass through my hands and enjoyed them both.
TZ30 on the left is the 6 speed
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#25
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Looking at these 14-34t freewheels and their cog sizes, I don't see how the 7sp one is any more useful than the 6s one, unless the bike perhaps already had a 7s SIS shifter on it!