dougb

I'm looking at a Miyata 750sr. No decals....from 1987.
I've seen the 710, but I'm not familiar with this model. I'm curious if anyone is knows enough about this one to tell what the frame material is; or what "sr" signifies.
Since it's a middle number, I suspect this bike falls into the "semipro" or "sport" category of Miyatas, but if one of the experts knows otherwise, or if it leans toward race or toward touring I would appreciate their estimation.
Thanks

T-Mar

I've never heard of a Miyata 750SR. It's definitely not in the 1987 catalog. The 7xx series model at that time was the 712. Do you know the components? How about a serial number?

dougb

Thanks T-Mar.
It has a an SR Custom crank,Suntour Sprint shifters, Shimano 600 derailleur, Dura Ace brakes, and a black Miyata badge on the head tube.

T-Mar

That's an very eclectic component mix! Nothing matches, making it impossible to establish a model or year based on the components.

If it has an actual badge on the head tube, as opposed a decal, then it is older than 1987. The black head badge was used in the very late 1970s and the early 1980s. Having the serial number would help. Also, the seat post size will indicate whether it is one of the entry or mid range models. Once we have those two, we can look at frame details to narrow down the possible model. If you can post or send pics it would help greatly.

dougb

I attached some images...I think.
Interesting paint job.
The serial number is J470584.
Thanks again.

T-Mar

It's very early 1980s, circa 1981 or 1982. I have the 1982 catalog, so if you can post the pics, we should be able to narrow things down.

dougb

Pics...finally.
Thanks

T-Mar

Thank-you for the pics. Unfortunately, they did not help as much as I thought they would. However, they do confirm that it is not a late 1980s model. There is no exact match with the 1982 catalog, so it is probably 1981. We can safely eliminate the race and touring series. Assuming that most of the 1981 frame features would carry over into 1982, the closest match that I have in the catalog would be a model 210 or 310. Given that the previous owner (?) recalled a model 750SR, there is a possibility that it could have been a the 1981 version of the 710, however, there are substantial differences in the style of the seat lug, stay caps and fork crown. Did you get the size of the seat post? .

Citoyen du Monde

The Miyata 750SR was designed especially for Koga in the Netherlands. They however did not sell as well as expected and Miyata therefore had quite a few left over in Japan. They therefore sold them to a number of Canadian shops that bought directly. They had high tensile steel frame and very light wheels. They were better wheels than equivalent Miyata bikes of the day and lesser frames. They never did appear in any catalogue as they wer not meant for the Canadian market, they just happened! If I remember correctly they were labeled as Koga-Miyata and were sold in 1983.

dougb

Thanks!

miamijim

In the mid to late eighties ('85 or '86) our shop in upstate NY sold the 750 SR model. I was told they were brought into the country and awarded/given to the top 5 dealers in the country. I believe each dealer recieved 75 bikes. They were available in gold or blue and they were not in the cataloge. Rare but not special.

T-Mar

Dnalsaam and Miamijim, thanks for the clarification! That's one Miyata I knew nothing about.

timmeh_green

I just took a look at one of these Miyata 750sr that someone posted on craigslist. It had 1024 High Tensile decals on the frame and fork. The serial started with a J so I assume thats a 1981. It was in very good shape. I did a quick weight comparison with my hands only but it seemed to weigh the same as my Miyata Nine Twelve 1984. I thought High Tensile Steel would be noticeably heavier than my triple butted chromoly but it didnt feel that way. So I'm wondering if it came down to the quality of the 750's wheels vs mine. I also had a back rack on my Nine Twelve. Anyone care to weigh in on 1024 High Tensile Steel? I'm curious about this surprisingly nice feeling bike.

Doublebass

ign1te

Do you have pictures of the catalogue where the SR-750 is found?

dddd

I assume that you have come across one of the 750SR's, that we're not just reviving an old thread.

So I will weigh in literally, in clarifying that the 1984 Nine-Twelve (which an earlier poster said was roughly comparable in weight to the 750SR) is a rather robust/heavy bike despite it's frame tubing spec. Mine weighs 24lbs with decent MA40 rims on it in the 57cm size, about a pound more than I had expected, right up there with my SR Semi-Pro in the same size.
My Centurion Pro-Tour in the same size weighs only 23.3lbs with heavier touring wheels!
...All weights with basic SPD pedals included.

Miyata frames and forks made from their 1024 steel tubing are good, durable framesets though. I've beaten a few of their road-going bikes off road, such as the lowly One-Ten, Two-Ten and Six-Ten models, which never so much as went out of alignment.

non-fixie 

When this thread resurfaced today I realized I had picked up one of those during the pandemic. It is my size, and the seller accepted my "cautious" offer. Kinda smuggled it into a dark corner of the garage at the time (don't ask) and subsequently forgot about it.

Serial number I252687, so 1980 production. I did take a quick snapshot before it disappeared behind that door. I suspect this one is pretty much original. Brakes are Shimano Tourney, transmission Shimano Altus, cranks, bars and stem Sakae Custom. Rims are Araya (700C).

My guess is that it was a bit too entry level for Koga to want it in their line-up.



For comparison, this is my 1980 Koga-Miyata RoadWinner, which was Koga's entry-level offering at the time. Serial number I827661. Shimano 600 cranks, Altus LT transmission, Tourney brakes, Sakae Custom bars and stem, Wolber 700C rims. All-in-all just a bit nicer than the 750 SR, especially the LT stuff.

ign1te

I found an old SR75. Once I started to look through the catalog archive, I was never able to find it. It seems like it is not very well documented What I can gather is the following:

- 750-SR is a race version that comes in 2 colours. Gold and another one (blue i think).
- 750-ST is a touring version with more mounts for accessories than the race one. Also came in 2 color schemes.

I've searched for these two bikes using their model numbers. They can be found in the various color schemes described above, in various ebay listings and so on. Identifying the bike is easy as the model name is prented on the toptube. I would like to find it in a catalog but it seems difficult.

I have the gold one which makes it the SR variant. The bike has a high ten frame that is lugged ("1024" miyata tubing).

For me it is definitely a frame I am going to keep as I proritize a good fit first and foremost.

Here is also a link to a 750-ST in supposed original condition.

https://www.lfgss.com/conversations/271955/

HelpSingularity 

Looks nice enough!

Doublebass

Unfortunately I can’t find any catalogs online but I do remember what I described very vividly. In some posts later that information got confirmed. It’s a pity that Miyata didn’t put their brochures online like Koga Miyata did.