I got a 1989 Miyata Alumicross earlier this summer and have managed to put a few hundred miles on it so far. We bought it from the previous owner for $200 who apparently had the bike sitting in storage for almost the past two decades, so its in surprisngly good condition despite its age. Almost all of the components on the bike are original, except for the saddle, bar tape, and toe clips (all of which I replaced myself).
Here's a description of the bike:
- 58cm, weighing approx. 24 lbs.
- Aluminum main tubes, APA-bonded 3-lug construction
- Suntour XCD-6000 deraileurs
- Suntour Accushift Bar Con shifters (front shifter is friction, rear is index/friction)
- Suntour cantilever brakes
- Suntour XCD-6000 CW-XD00 cycloid triple crankset (48, 38, 28)
- CrMo fork
- Wolber GTx 700C rims
- IRC cross-country 35mm tires
- Suntour 6-speed freewheel (13, 15, 17, 20, 24, 28)
- Sansin sealed hub
- air-bottle basement (braze-on for CO2 cartridge)
- Interior back-brake cable thru top tube
- Steel pedals with strapless toe clips
- SR Sakae custom Modolo patent (Anatomic bend) handlebars
The Alumicross was apparently Miyata's top "cross" bike at the time of its production. I'm not quite sure if Miyata designed the Alumicross with cyclocross specifically in mind, or if its just a hybrid type bike. Nevertheless, its a good ride, and is light and speedy despite its thicker tires and heavier then normal frame, while still being well suited for cyclocross rides. Its also a good bike for riding around town and doing some recreational riding, and I suspect that it would do quite well at loaded touring since it seems to have all the threaded holes for attaching additional racks and panniers. The low gear gearing and wide gear ratios makes the Alumicross great for long, steep hill climbs while carrying lots of additional weight, but they also mean that the Alumicross is ill suited for high-speed road races.
I should also point out that the paint job on the Alumicross is quite impressive. At first glance, it appears to be a simple white paint, but a closer examination reveals that it has a sort of mother-of-pearl sheen that is really quite pretty. Of course, its a devil to keep clean, and dust can quickly cover up the paint's beauty.
I've heard that bar-end shifters can be a bit dangerous since they make it easy to accidentally shift gears, but so far I have yet to experience any problems. My only quibble with the bike are the huge jumps between sizes of the sprockets on the rear wheel. Some people on bike forums have reported that Miyata's APA bonding technique was not the best and that the bonding often seperated after some time, while other people have ridden their Miyatas for decades without any problems. So I suppose the longevity of Miyata's bonding techniques is up in the air and we'll just have to wait and see how mine holds up.
More pictures below. Click to enlarge.