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  1. #1
    Disco Infiltrator Darth Lefty's Avatar
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    Exage 500LX info

    I'm cleaning up an Exage 500 mountain set I got off a fairly nice old Giant Prodigy hybrid. The intent is to put them on my cross commuter Cannondale frankenbike. I'm going to post here what I've learned as I go along. The shifters seem pretty well shot but the brakes and derailleurs and crank all look good. The date code on the parts is OI or September 1991.

    Exage 500LX was fourth in a lineup of nine and the highest not to say "Deore" on it. The other designs were all basically the same shape, but the higher levels had more aluminum, meaning the 500 rear derailleur for example weighed about 60 grams more than an XT, with fewer seals and tension adjustments.

    I've taken apart the rear derailleur RD-M500 GS. The knuckles are aluminum, painted silver. The cage and plates are steel plate that's been stamped pretty intricately. The cage and the left plate are plated. The right plate is painted black with the 500 logo printed on it. The hinges are all steel pins that are captured by smashing the aluminum behind them - I forget right now what the term of art is for this. The pins enter from the bottom and the top holes in the knuckles are blind so there's nowhere for water to collect and also gives it a really clean look. The high and low adjustment screws stick out the back. The tension on the cage and parallelogram are not adjustable, only the B-tension screw. The upper pulley is a "Centeron" which has a sintered alloy bushing rather than just being bare plastic. The 1990 catalog at Disraeli Gears shows this RD has a sprocket capacity of 12-30 teeth and a wrap capacity of 30 links.

    A Clorox wipe took the RD's 500 logo right off - oops! The steel screws are all a little rusty but the plated and painted and aluminum parts are all just fine.

    I'll edit with photos when things come out of the wash and come back together.
    Last edited by Darth Lefty; 04-12-15 at 09:14 PM.
    Genesis 49:17

  2. #2
    Disco Infiltrator Darth Lefty's Avatar
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    The front derailleur FD-M500-B is a bottom pull model. It has an aluminum band, aluminum inside plate, and painted steel outside plate/arm. It doesn't really come apart at all, being held together with mostly steel pins. The high and low adjustment screw heads go through a plastic block for no reason I can figure out. Maybe it's for weatherproofing. There's a plastic guard that snaps over the spring. The rated ring difference was 24 teeth with Biopace or 26 circular. This is pretty wide, allowing 22-48 rings if you want.

    I've stopped cleaning this one, the band clamp diameter is wrong for the bike I want to put it on. Perspective of the closeup makes it look pretty weird

    Untitled by Darth Lefty, on Flickr

    Untitled by Darth Lefty, on Flickr
    Last edited by Darth Lefty; 04-12-15 at 08:34 PM.
    Genesis 49:17

  3. #3
    Death fork? Naaaah!! top506's Avatar
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    As it happens I have an Exage 500LX build and a Deore LX build, and IIRC there isn't a dimes worth of difference between the two aside from cosmetics. I'll post some scans tomorrow.

    Top
    You know it's going to be a good day when the stem and seatpost come right out.

  4. #4
    Bianchi Goddess Bianchigirll's Avatar
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    I think 500LX briefly became Mountain LX the became Doere
    Bianchis '87 Sport SX, '90 Proto, '90 Campione del Fausto Giamondi Specialisma Italiano Mundo, '91 Boarala 'cross, '93 Project 3, '86 Volpe, '97 Ti Megatube, , '90 something Vento 603,

    Others but still loved,; '80 RIGI, '80 Batavus Professional, '87 Cornelo, '09 Motobecane SS, '?? Jane Doe (still on the drawing board), '90ish Haro Escape

  5. #5
    Ride More seedsbelize's Avatar
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    I rode a 93 Giant Prodigy for 18 years, first in the US, then in Belize with a shock absorbing fork and finally here in Yucatan, with the original equipment. Finally the right rear dropout cracked and I passed it along to a young friend here. I still have the exage components in the parts bins, including the wheel hubs.


    http://www.businessinsider.com/malco...ception-2015-2
    The real beauty of this play, aside from the fact it was made by my favorite team, is that it was perfectly executed. The receiver ran a perfect route; Wilson threw a touchdown pass, and the defender played his part perfectly. A thing of beauty.


    https://austinisafecker.wordpress.co...diation-offer/

  6. #6
    Disco Infiltrator Darth Lefty's Avatar
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    @seedsbelize I came across your mention of it when I was researching the bike. It's a decent frame, butted tubing of no particular provenance, double rear eyelets and mid blade fork eyelets and a pump peg. Should make quite a decent touring bike. This example is huge, 23.5 in tall and 25 in long with a long stem. It has a lot of surface rust but seems sound. Seat post and stem are stuck but I wasn't after those so I didn't mind. I'll put it up for trade or something locally when I'm done
    Last edited by Darth Lefty; 04-12-15 at 07:47 PM.

  7. #7
    Disco Infiltrator Darth Lefty's Avatar
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    Quote Originally Posted by top506 View Post
    As it happens I have an Exage 500LX build and a Deore LX build, and IIRC there isn't a dimes worth of difference between the two aside from cosmetics. I'll post some scans tomorrow.

    Top
    Quote Originally Posted by Bianchigirll View Post
    I think 500LX briefly became Mountain LX the became Doere
    This 1991 Shimano catalogue at Disraeli Gears shows the Deore XT, DX, and LX, and Exage 500LX along with anything else you'd like to know from the year. They are indeed quite close, the Deore LX RD has a few more seals and a better finish on the knuckles and it weighs 9 grams less. So it goes up the lineup with little upgrades. The XT is totally sealed and has three tension adjustments, knuckles and plates are aluminum, a ceramic guide pulley bushing, but the basic design is the same.
    Genesis 49:17

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