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Bridgestone MONOX need help to find information!

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Bridgestone MONOX need help to find information!

Old 09-16-13, 09:52 PM
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Bridgestone MONOX need help to find information!

I just bought this vintage touring Bridgestone and although I have Google but I got very little information about it. Could anyone please give more information about MONOX please.

The frame is CrMo 4130, size is 55 cm







I will up more photos later.
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Old 09-16-13, 11:26 PM
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No clue on the bike or its history, but those are pretty cool pedals in it. I could use three or four pairs of those.
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Old 09-17-13, 03:36 AM
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Thank you but I got no information of the pedals.

The dreailleurs ar Suntour GT





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Old 09-17-13, 06:11 AM
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I suspect the bicycle is an Asian market, early 1980s model on the cusp between entry evel and mid-range. It appears to be a general purpose model as opposed to a true touring bicycle.

The presence of the light mounted on the right fork blade indicates the original market drove on the left hand side of the raod, such as in Japan and many other Asian countries.

The front racks are mounted with clamps rather than braze-ons and the rear rack is mounted via the brake bolt, indicating that are more likely aftermarket items than OEM equipment. The bicycle appears to have standard gearing, rather than the wider gearing found on true touring models.

The bicycle uses gear cables routed over the bottom bracket as opposed to under, which became prevalent in the late 1980s, yet it does not appear to be 1970s which would typically have center-pull brakes and use clamps for the bottle mounts. It should be early 1980s or not much removed.

While it does have a CrMo decal tubing there is no indication that it is butted or whether it is the full frame, just the main tubes or just the seat tube. It's almost certainly one of the latter two. This, in conjunction the limited braze-ons and apparent era suggests it is not far removed from entry level. The derailleur hanger on the rear droputs also looks like it may be stamped, as opposed to forged, as it appears to have a stamping break line and formed bends.

I'm not sure that Monox is the model. It may have been owner applied. The rough edges on the bottom indicate it may be paper based and that would be uncommon for a bicycle manufactrurer of this era. Frankly it looks a lot like the Asian market Bridgestone Roadman with aftermarket racks.

I'd still like some more iniormation. Pictures of the dropouts would be helpful to determine the level and intended use. The serial number will tell us the exact year. I'm not sure that pictures of the other major components will be of much use as there appear to have bee many replacements.

(7)

Edit: It looks like it may actually be MORIOX, though that still means nothing to me.

Last edited by T-Mar; 09-17-13 at 06:47 AM.
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Old 09-17-13, 07:59 AM
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Oh. Very impressive T-Mar. I searched somewhere on Internet and they said that the Monox and Eurasia is the better model than Roadman.

I will update more pics.
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Old 09-17-13, 08:30 AM
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Old 09-17-13, 08:33 AM
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Old 09-17-13, 08:35 AM
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Old 09-17-13, 08:38 AM
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Old 09-17-13, 08:44 AM
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Old 09-17-13, 08:45 AM
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definitely an Asian-market model. The random sticker with a paragraph of French is typical, you wouldn't see that on an American-market bike. Also the Eurasia was the Asian-market mid-level Bridgestone touring bike, similar to the RB-T.
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Old 09-17-13, 09:33 AM
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The serial number indicates it's either 1972,1982 or 1992, though I've never seen it stamped in that location. They may have used the serial number location to identify the intended market, but I'm only guessing. I'm leaning towards 1982 as vertical dropouts and a brazed-on bottle boss would be atypical for 1972 and I'd expect a lost more fttings and a Unicrown fork on a 1992, even an entry evel one. The downtube caution label is also more likely in 1982 than 1972. Though I don't put a lot of credibility in the components, the Altus shifters would also be period correct for 1982.

The dropouts are what are commonly called 3D dropouts. Basically, they are stamped dropouts with some relief added. They support the previously suggested level, given the apparent era and presence of a dropout hanger. They also indicate that the stays (and fork) are most likely hi-tensile steel.

The French label on the downtube is interesting. It imples that French is an offical language for the intended market. Left hand driving and French language should narrow things down quite a bit. That's getting out of my area of expertise, but it would seem to imply south east Asia or south east Africa?

I now see that what I thought was an 'R' and 'I' is an stylized 'N' made from two strokes. MINOX it is!

(5)

Last edited by T-Mar; 09-17-13 at 09:38 AM.
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Old 09-17-13, 07:41 PM
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I have googled this page,

https://cyclespeugeot.web.fc2.com/bsroadman75.htm
I introduce the catalog in 1981 in this page. The models in the catalog became more professional sports bicycle than first model. Roadman was an inferior model of Monox and Eurasia.

All models of Roadman and superior model Monox. As for Roadman, there were two frame sizes for 26 * 1-3/8 wheel model, and five frame sizes for 27 * 1-3/8 wheel model. All of the models were equipped with 2 front sprockets and 6 rear sprockets (12-speed).
My bike looks like this MX S1 very much, but the pic is small and all in Japanese so I can not understand.

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Old 09-17-13, 07:47 PM
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Cool bike. The first pic absolutely sucks. When you get a chance can you take a new pic in good light with the sun to your back and on the drive side? Thanks!
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Old 09-17-13, 08:01 PM
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@shoota: I will take new pic soon.


https://yahoo.aleado.com/lot?auctionID=p346531064


This bike frame looks like mine very much but as T-Mar said the components has been replaced except for the racks.

Mine bike got Suntour Superbabe crankset



the hubs are Suzue with Arraya 27" alluminium.



SR seat post



SC brakes.
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Old 09-18-13, 07:28 AM
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The OP's bicycle resembles the cataloged Roadman frame more than the Ebay frame. The Ebay frame has forged dropouts with single eyelets and does not have any rack mounting holes in the fork crown. On the other hand, the Roadman frame in the 1981 catalog has the the same 3D dropouts with dual eyelets and the same fork crown with mounting holes as the OPs bicycle. The resolution on the Minox pictures in the catalog is too poor to make a definitive statment but they appear to use a crown without mounting holes (the MX model definitely doesn't these holes for it's front rack attachment).

The OP's bicycle is one year different from the catalog but it appears things did change. Regardless, the OP's does closely appears to be the Minox MX-S (or it's usuccessor), as the MX-T used cantilevers and the MX-F was 700C. It's worth noting that the Roadman frames were plain gauge CrMo main tubes, so the OP's probaly is too. This falls in line with the earlier assessment.

The additional photos indicates that the brakes are almost certainly orignal equipment, as these are Bridgestone's Self-Centering (SC) models which were spec'd on the 1981 Roadman and Minox MX-S.

(3)
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Old 09-22-13, 10:55 PM
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Thank you, T-Mar. Last weekend I tested it for a 60km trip. The weather was crazy hot so I was really tired. The bike is smooth but I don't get to with loaded touring bike. Need more practise.





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Old 09-23-13, 03:03 AM
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vietnam? was french widely spoken that late?
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Old 09-23-13, 03:49 AM
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Before 1954 French was widely spoken in Vietnam. In 1983, the embargo was imposed by US Government so obviously this bike was not for Vietnam Market. I think it was exported to Cambodian Market.
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Old 09-23-13, 06:31 AM
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Looks like a cool bike and it looks like a lot of the parts have been replaced with good parts over the years.

Love the color and the overall look of the bike- I'm glad you're enjoying it!

I also like the pic with the water buffalo resting in front of your bike!
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Old 09-24-13, 10:43 PM
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Thank you Golden Boy. I have seen some of your bikes in the topic of vintage touring bikes. They are cools.

I'm now considering if I should swap the 27" wheel set to 26" or 700c. I really don't know which wheel set is good for a touring bike?
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Old 09-25-13, 06:11 AM
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Cool bike!
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Old 09-25-13, 08:53 AM
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Originally Posted by candid View Post
Thank you Golden Boy. I have seen some of your bikes in the topic of vintage touring bikes. They are cools.

I'm now considering if I should swap the 27" wheel set to 26" or 700c. I really don't know which wheel set is good for a touring bike?
Thank you!

I guess the big thing in wanting to swap wheels is why you'd want to swap them. If you've got 27" wheels and there's 27" tires around and the 27" sizes meet your needs- I'd say there's no reason to switch. That's just me.

If you want to switch for the sake of switching, or if you'd like a wider selection of tires or whatever- you'd have to figure out if your brakes would accommodate the switch- it looks like they would.

Of course, if you want to get all crazy in building it up... you've got some quality parts on there, and I think the bike looks quite cool... You might want to start with getting some dual pivot sidepulls. Ones that'll have enough reach to go from 27 to 700c. The biggest advantage between then and now is that you get better stopping power than the single pivots that you currently have. Then I'd get some sporty slotted Superbe brake levers- then I'd go for the 700c wheels. That's just me.
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Old 09-25-13, 09:26 PM
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Thank you for help, Golden Boy!.

Mine problem is the size of frame 55 cm, a little bit oversize for me. I think if I change to 700c or 26", it will be more suitable for me.

I just got a Zimbale 7 litre saddle bag and a Fast rider handle bar. I will try another ride with these stuff at the weekend of this week.
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