What is this Miyata?
07-13-08 | 05:40 PM
#1
Thread Starter
El Duderino
Joined: Jun 2008
Posts: 492
Likes: 2
From: Madison, WI
Bikes: 84 Raleigh Portage, 83 Trek 620
What is this Miyata?
Picked up a dirt cheap Miyata touring bike yesterday. It needs a lot of work and has clearly been off to war, but I think I can get it ready for another battle. I couldn't test ride it due to the crappy wheels and tires it had on it, so I put the wheels on it from my 1984 Miyata 310. Only then did I see what a comfortable bike it is to ride! Can't really ride it until I get some new brake and derailer cables on it.
I'd guess it is a 200 level touring bike from the late 70s or early 80s. It has a triple chainring, Deore LX RD, Hi tensile fork, cantilever brakes front and back, SR Apex cranks.
Also, I have a couple of questions besides ID.
1) I couldn't get the derailer cable to attach to cable fixing nut, even when I detached the shift lever and pulled out the cable beyond the area that is frayed. It seems as though the bolt is stripped in the first revolution. Is this just a case where new cable will attach just fine, or am I going to have to remedy the fixing nut?
2) Any reason why I couldn't put a 7 speed megarange freewheel on there? It has a 6 speed now. The bike has 126mm spacing.
I'd guess it is a 200 level touring bike from the late 70s or early 80s. It has a triple chainring, Deore LX RD, Hi tensile fork, cantilever brakes front and back, SR Apex cranks.
Also, I have a couple of questions besides ID.
1) I couldn't get the derailer cable to attach to cable fixing nut, even when I detached the shift lever and pulled out the cable beyond the area that is frayed. It seems as though the bolt is stripped in the first revolution. Is this just a case where new cable will attach just fine, or am I going to have to remedy the fixing nut?
2) Any reason why I couldn't put a 7 speed megarange freewheel on there? It has a 6 speed now. The bike has 126mm spacing.
07-15-08 | 04:42 AM
#2
Senior Member
Joined: Nov 2004
Posts: 23,212
Likes: 3,123
It's a circa 1979 Miyata Gran Touring, which was the predecessor to the highly regarding Miyata 1000. Almost everything has been replaced. Only the crankset and possibly the headset, handlebars and strem appear original. Even then, the middle chainring is a replacement.
It's impossible to tell is the nut is stripped or not, You will just have to try it with a new cable.
The Deore LX had a limit of a 32T maximum cog. Often, you can exceed this by 2T, so a 34T MegaRange may work, depending on things like the length of the hanger on the SunTour GS dropouts. Again, the only way to know for sure is to try it.
The frame was originally a five speed. The rear triangle has been cold set if the spacing is 126mm. You should have no problems running a 7 speed freewheel as both 6 and 7 speed using 126mm spacing. The overall width of both freewheel bodies is very close, with the difference being slightly narrower cogs and spacing on the 7 speed.
It's impossible to tell is the nut is stripped or not, You will just have to try it with a new cable.
The Deore LX had a limit of a 32T maximum cog. Often, you can exceed this by 2T, so a 34T MegaRange may work, depending on things like the length of the hanger on the SunTour GS dropouts. Again, the only way to know for sure is to try it.
The frame was originally a five speed. The rear triangle has been cold set if the spacing is 126mm. You should have no problems running a 7 speed freewheel as both 6 and 7 speed using 126mm spacing. The overall width of both freewheel bodies is very close, with the difference being slightly narrower cogs and spacing on the 7 speed.
