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Old 05-18-16, 10:30 AM   #1
Trinidor
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Shimano RD-M700 Derailleur (Deerhead) Advice Needed

Hi folks, I just bought a Shimano RD-M700 on ebay and it seems fine, maybe, with the exception of one perplexing part. The bolt that the cable adjuster screws into and which also provides a pivot point for the derailleur, swivels. It's not stationary, and therefore, the cable adjuster also swivels. Is this normal, or maybe a case of the bolt originally being press fit and coming loose over the years? It seems a little odd, because I've never encountered a cable adjuster that swivels, and it seems as if it may affect shifting in a negative way, by moving as the cable is tightened during shifting. Also, there is no way to actually tighten and stabilize this bolt built into the design. Any advice appreciated. BTW the original RD-M700 that came with the bike and I have still, had a different setup for cable pass through, but I know the new one hasn't been modded, because I've seen it's setup on original RD-M700s on the web. They are just two different versions of the same model. Thanks, Richard
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Old 05-18-16, 10:38 AM   #2
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I'm not sure I follow, but can hopefully help. I have a couple of these and each works well. What do you mean by "The bolt that the cable adjuster screws into..."? The barrel/cable adjuster threads into the der. body, are those threads stripped? Can you post a pic? Also, have you installed it yet? Give that a go and see if it works correctly.

On second thought, do you mean the barrel adjuster, or the bolt/nut that anchors the cable to the der? The bolt head should have a flat (from memory, so maybe I'm wrong) that mates to a roughly 'D' shaped hole in the body. Make sure the flats are lined up and the bolt is properly seated as you tighten the nut to anchor the cable.
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Old 05-18-16, 11:00 AM   #3
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No need to wonder or worry; it is normal. There are other Shimano derailleurs of that era with the barrel adjuster on a pivoting mount as well. The pivot was there so that when the derailleur was shifted, the cable would remain straight going to the pinch bolt.
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Old 05-18-16, 11:33 AM   #4
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No need to wonder or worry; it is normal. There are other Shimano derailleurs of that era with the barrel adjuster on a pivoting mount as well. The pivot was there so that when the derailleur was shifted, the cable would remain straight going to the pinch bolt.
Yes!!! Thanks so much, techsensei, this is exactly what I had hoped was the case. Sir_Name thanks for the reply as well. I guess, case closed. Maybe Shimano stopped doing that, because it was an extra complication and expense, eh. Now i can put that derailleur on my '86 Fat Chance without trepidation.
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Old 05-18-16, 11:36 AM   #5
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my '86 Fat Chance without trepidation.
ooohhhh! photos please!
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Old 05-18-16, 11:37 AM   #6
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^Yes please.
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Old 05-18-16, 11:41 AM   #7
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Thought I'd just show you guys a pic of this little beauty
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Old 05-18-16, 11:57 AM   #8
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Huh, neither of mine have the barrel adjuster mounted on a swivel like that (as stated above...). Pretty neat to see. Wonder if yours is toward the beginning or end of the series (I'd guess toward the end?). Some on eBay are asking stupid high prices for NOS examples...craziness (or maybe an attempt to drive up sale prices of more modest examples).
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Old 05-18-16, 11:59 AM   #9
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Here you go: custom factory paint, Magura levers, Biopace rings, under chainstay rear brakes, bear trap pedals original deerhead is in pic, (which has a spring issue), all original pretty much except for seat and tires and front rim, which I replaced with as RM-20 with Deore, as opposed to Sansin hub, which is on back. Rides killer!
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File Type: jpg IMG_1759.jpg (68.6 KB, 279 views)
File Type: jpg IMG_1760.jpg (77.1 KB, 451 views)
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Old 05-18-16, 12:04 PM   #10
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Huh, neither of mine have the barrel adjuster mounted on a swivel like that (as stated above...). Pretty neat to see. Wonder if yours is toward the beginning or end of the series (I'd guess toward the end?). Some on eBay are asking stupid high prices for NOS examples...craziness (or maybe an attempt to drive up sale prices of more modest examples).
Here's a link to a very cool website with a history of the evolution of the XT derailleur, and a pic of my exact model-http://www.disraeligears.co.uk/Site/Shimano_Deore_XT_derailleur_%28M700_1st_style%29.html
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Old 05-18-16, 12:15 PM   #11
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Here's a link to a very cool website with a history of the evolution of the XT derailleur, and a pic of my exact model-http://www.disraeligears.co.uk/Site/Shimano_Deore_XT_derailleur_%28M700_1st_style%29.html
Weird, I stumbled onto that exact page this morning trying to figure out if/how the cage geometry for the front der. changed over the years. Read the page, wasn't paying enough attention to notice the different barrel adjuster mount.....

Killer bike, looks like a lot of fun.
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Old 05-18-16, 12:27 PM   #12
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Originally Posted by Trinidor View Post
Here's a link to a very cool website with a history of the evolution of the XT derailleur, and a pic of my exact model-http://www.disraeligears.co.uk/Site/Shimano_Deore_XT_derailleur_%28M700_1st_style%29.html
Some had no barrel adjuster; instead, the body had a fixed forged cable stop. This image shows variations of the M700:
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Old 05-18-16, 12:37 PM   #13
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And none with a swiveling stop, I didn't realize how many iterations there are, neat to see them lined up. Looks like the offset of the parallelogram from the hanger/mounting bolt changed over the years, too (comparing the top two against bottom left). Looks like a function of different pulley geometry for the super plate system.

Last edited by Sir_Name; 05-18-16 at 12:51 PM.
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Old 05-18-16, 12:46 PM   #14
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Wow, amazing collection techsensei. The original M700 on my bike was the forged type, top far left in your pic. Do you think the pivoting model was the first?
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Old 05-18-16, 12:50 PM   #15
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Wow, amazing collection techsensei. The original M700 on my bike was the forged type, top far left in your pic. Do you think the pivoting model was the first?
Good question, the deore tri-colour rear derailleur had the swiveling barrel adjuster set-up like yours and I think they came out around 1982.

Edit: and if you scroll down in the link you'll the XT stag head just like yours.

http://www.mtb-museum.de/mtb82/shimano-82-83.htm

So I'd guess yours is earlier. There should be a 2 letter date code somewhere.

Edit again: Disraeli gears also corroborates http://www.disraeligears.co.uk/Site/..._style%29.html
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Old 05-18-16, 12:53 PM   #16
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Wow, amazing collection techsensei. The original M700 on my bike was the forged type, top far left in your pic. Do you think the pivoting model was the first?
I kind of think maybe the swivel was the first version, because the inner hanger piece has no metal flap for keeping the chain close to the bottom pulley. They probably added that later?
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Old 05-18-16, 01:13 PM   #17
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[QUOTE=cyclotoine;18778202]Good question, the deore tri-colour rear derailleur had the swiveling barrel adjuster set-up like yours and I think they came out around 1982.

Edit: and if you scroll down in the link you'll the XT stag head just like yours.

1982-1983 Shimano Deore parts

So I'd guess yours is earlier. There should be a 2 letter date code somewhere.

Edit again: Disraeli gears also corroborates Shimano Deore XT derailleur (M700 1st style)[/QUOTE
Yes, you are probably right about the Disraeli Gears reference. Originally, I thought the parenthetical '(First Style') referred to the first style of XT, in general, being the M700, but the corre4ct interpretation is probably a reference to the first style of M700. Anyway, I'm gonna go with that. Thanks for the input. Oh, by the way, I found something that may be a date stamp. It looks like either IE, or 1E

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Old 05-18-16, 01:21 PM   #18
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Wow, amazing collection techsensei. The original M700 on my bike was the forged type, top far left in your pic. Do you think the pivoting model was the first?
Not my derailleurs or photo; just something I found on the interwebs. I imagine the pivoting mount was first, but I don't know for a fact.
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Old 05-18-16, 03:13 PM   #19
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Some had no barrel adjuster; instead, the body had a fixed forged cable stop. This image shows variations of the M700:
Wow- I knew there was a "Superplate" and one without the Superplate... really cool.


Shimano had a complete and total winner with the M730 crankset...

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Old 01-12-18, 08:05 AM   #20
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Not my derailleurs or photo; just something I found on the interwebs. I imagine the pivoting mount was first, but I don't know for a fact.

They are mine

that running adjuster? for reason of less friction between cable and adjuster, I think
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Old 01-12-18, 08:24 AM   #21
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Is this the Deerhead pictures thread?









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Old 01-12-18, 08:36 AM   #22
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Here are a couple Super Plate versions with slightly different cage and pulley designs. I could use a cage stop pin if anyone has an extra available

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Old 01-12-18, 08:43 AM   #23
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Date Codes for these 3 Deerhead RDs

IE - 84 May - Pivoting stop
IJ - 84 Oct - Super Plate with plastic backed jockey pulley
JK - 85 Nov - Super Plate with metal backed jockey pulley and cage plate w/ chain guard at idler pulley
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Old 01-13-18, 01:17 AM   #24
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Interesting those plastic backed jockey pulley, i didn't know
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Old 01-13-18, 10:34 AM   #25
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Interesting those plastic backed jockey pulley, i didn't know

The plastic/composite pulley on my Novara Randonee with Deerhead mech came apart, apparently from abuse but I could see all-metal being better for such a composite assembly.
I assume the all-metal pulley came later.
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