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Which Mavic rims do I have?

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Which Mavic rims do I have?

Old 03-04-19, 11:25 AM
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stardognine
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Which Mavic rims do I have?




I bought another Cannondale ( a 1995 road bike) on Friday, because I desperately needed a rear wheel (long story). Anyways the hubs and most parts are RX100, which as most of you know, are basically like 105SC, only chromy-looking. 😍
The big selling point here is, the rear wheel (36-hole) has 126 spacing, to fit my older Cannondale properly, and it had a Shimano HG cassette. 😎 So with some help from a bike shop near Sun City West, I got my newer HG cassette mounted, minus one of the smaller cogs (older ones are spaced a little funny, apparently), to get that 36t cog on it.
Anyways, it shifts great, using 8 of 9 with all 9-speed parts, including M-750 (XT) shifter pods. Plus they drilled out my valve stem holes to accept schrader valves, which are far better when touring, lol.
Anyways, back to the original question, which rims are these? I've heard of several models with MA starting the model number, but don't remember seeing that as the full model name. 🤔
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Old 03-04-19, 11:30 AM
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Mods, I accidentally posted the same pic twice, thought it lost the first one, lol. Feel free to delete one, if you want. 😉
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Old 03-04-19, 11:34 AM
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Measure it.. how wide ? says MA isn't that enough?
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Old 03-04-19, 11:36 AM
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MA it is.

I'm surprised a 95' C-dale would have a 126 OLD wheel. 130 yes although sometimes it's 128 to accommodate both sizes.

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Old 03-04-19, 03:09 PM
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Originally Posted by fietsbob View Post
Measure it.. how wide ? says MA isn't that enough?
It's obviously a good rim, I was just looking for opinions & input from the old-timers who know more about it than I do. Those are 700c x 35c tires, so yeah, the rims are nice & wide. 😁
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Old 03-04-19, 03:21 PM
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Originally Posted by clubman View Post
MA it is.

I'm surprised a 95' C-dale would have a 126 OLD wheel. 130 yes although sometimes it's 128 to accommodate both sizes.
That's what I was kinda saying, a 126 OLD hub built for cassettes must be semi-rare. Pretty much all of them were for freewheels, from what I've seen. Interesting how things changed over time there.
BTW, those rims & hubs need a good cleaning, but the hubs were repacked sometime fairly recently, and they spin like new. Just gotta clean them up, as time permits. 😎
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Old 03-04-19, 03:23 PM
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I’ve seen MA2 and MA40 rims. Maybe there was MA before MA2?
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Old 03-04-19, 07:46 PM
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There were a number of 126 OLD models that were built for 7 speed cassettes, including yours, a series of 105's and some hybrid models, the names escape my addled mind. They often had a simple sticker with '7S' on the hub barrel. Late 80's-90.

I think it was a CX series hub...yah, that's the ticket! Probably Exage and some Deores as well.

MA's are double wall and 20.5 OD. They should take 32's without a problem. Mine have the older label and are laced to last generation Helicomatic hubs, whenever that was.
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Old 03-04-19, 08:29 PM
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Originally Posted by Spaghetti Legs View Post
I’ve seen MA2 and MA40 rims. Maybe there was MA before MA2?
Yep. I've read that the MA was a (sometimes single-eyelet) precursor to the MA2.
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Old 03-05-19, 09:52 AM
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Mod 3 width more, , Mod 4 wider still (tandem wheel)

MA 40 hard anodizes those just clear anodized..
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Old 03-05-19, 11:00 AM
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Originally Posted by ThermionicScott View Post
Yep. I've read that the MA was a (sometimes single-eyelet) precursor to the MA2.
I wondered if it a "precurser" thing, or if it was a matter of weight using a single eyelet, or COST. I bet those MA rims are OEM parts, possibly made with thicker outside wall, a la MA3 in later decades.

Inside width on these is a meager 13mm, but it's a quite-sturdy rim and I raced XC on 32h double-eyelet versions for three and a half years using 700x45 knobby tires.

They would even accomodate a 29"x2.1" MTB tire if the right inner tube is selected and with a tug on the valve stem as the pressure rises past 5psi.
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Old 03-05-19, 03:30 PM
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Mavic MA Rims - Time Line

Mavic MA rims were a follow on to their very successful Module-E and Module-3 series rims introduced in the mid 1970's.

The Module-E rims were developed in 1975 in conjunction with Michelin to work with their newly released high pressure Elan tires. The rim and tire combo was supposed to provide sewup like performance with clincher tires.




Most standard alloy rims back then were 22mm-24mm wide. The Module-E rims were 20mm (19.7mm) wide, about the same as sewup rims. In size 700c these allowed riders to swap between clinchers and sewups without having to adjust their brakes. Those rims were also made in 27" for the inch standard market but required adjusting the brakes when switching to and from sewups.



Around 1985 Mavic introduced their MA series of rims replacing the older "Module" models. The MA rims were 20.5mm wide vs. 19.7mm Module-E rims.

Mavic MA rims have single spoke eyelets. The later MA2 rims have double spoke eyelets. MA40 rims are brown hard anodized MA2 rims.






The advantage of double eyelets is that the spoke tension forces are spread over a wider area inside the rims.

Single eyelet rims have a tendency to crack around the eyelets, especially with highly tensioned wheels on rough surfaces.

I picked a set of NOS wheels with Shimano 126mm OLN hubs (cassette rear) and MA rims. I was riding a lot on some rough pavement and I was having to re-true the rear wheel after almost every ride. After a while I noticed cracks forming around the spoke eyelets on the rear wheel. As an experiment I marked them to keep track of the crack growth.




One day I pulled the bike out to go for a ride and the rear wheel was catching in the brake pads. It had been sitting for about 6 months and the rim finally failed on it's own in several places.



I replaced it with a double eyelet MA2 rim and all has been well since then.

So, word of caution, keep track of the rear rim for signs of cracks.

BTW Shimano made 5 and 6 speed cassettes BITD.

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Old 03-05-19, 04:28 PM
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Wow, as usual, I'm amazed at how much there is to learn about bikes. 😁 That works out perfectly then, as to their vintage, since the keeper C'dale is also an '85. 👍
I'll definitely watch those eyelets for cracks, thanks for the warning. There was some darkness there, that cleaned up well, and no signs of cracks so far. I'm going to baby them this month, somewhat, then get them trued & tensioned next month, when I can afford it better, just for insurance.
Thanks guys. 👍
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Old 05-03-19, 05:41 PM
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Well, you tried to warn me. 🙄😉 I just noticed this yesterday, the dreaded cracks next to the spoke nipples. 😩 Fortunately, I didn't get caught in a bad situation. And I had pretty good luck finding replacements, on a pawn shop bike, for a pretty good price. This time, it's Ritchey Vantage rims, with Exage 7-speed hubs. The rear takes a cassette, so things should be just fine for upgrading. 👍
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Old 05-03-19, 06:25 PM
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I have one of these laced to a 7 speed 105 hub and was looking for info on it yesterday. This thread is rather fortuitous.

Although now I'm wondering if I should just lace the hub into a different rim.
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Old 05-03-19, 08:37 PM
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Yeah, folks seem to have much better luck with the MA 2 rims. Those MA rims just seem to be lemons, from a transitional time in rim development.
Glad we saved you the trouble of learning the hard way. 😉
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Old 05-03-19, 09:22 PM
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Originally Posted by stardognine View Post
Yeah, folks seem to have much better luck with the MA 2 rims. Those MA rims just seem to be lemons, from a transitional time in rim development.
Glad we saved you the trouble of learning the hard way. 😉
At 240 that cracking doesn't fill me with confidence.

I have an Araya 700c with double eyelets that has absolutely no wear on the brake track. I think it's a SS-40 I've been looking for a match for it.

I also have an orphan CXP23 I need to find a match for.

Smart thing would probably be to donate them to the coop and just buy new.
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