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Vintage 80's Specialized MTB inquiry...

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Vintage 80's Specialized MTB inquiry...

Old 03-02-15, 08:11 PM
  #26  
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I've never seen a bad Rockhopper. All were race-quality.

Your serial# has nothing in common with the format of my '86 Rockhopper.

Photo's needed.
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Old 03-03-15, 11:45 PM
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dddd, I havent cleaned up the bike since I pulled it out of storage a week ago, but here are some photos:

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Old 03-04-15, 01:05 AM
  #28  
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Closest I can come up with is 1985 Stumpjumper Sport.
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Old 03-04-15, 07:04 AM
  #29  
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The shifters are identical to my 86 Rockhopper. It's Red though.
Fork is different with that "lug" on top. makes me think possibly an earlier Stumpjumper?
Crank looks the same. Mine was 26-36-46.
Rear wheel/hub doesn't look stock for that era.

Fork looks like an 85 Stumpjumper-
https://mombat.org/MOMBAT/Bikes/1985_Stumpjumper.html

https://mombat.org/MOMBAT/bike_list.html

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Old 03-04-15, 07:13 AM
  #30  
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Has the OP bothered to look for the date code on the back of the crankset? I am rebuilding a 1993 TREK 950; the date code 9 and a 3 in circles are as plain as day on the back of the Deore LX triple.
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Old 03-04-15, 08:59 AM
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Originally Posted by oddjob2
Has the OP bothered to look for the date code on the back of the crankset? I am rebuilding a 1993 TREK 950; the date code 9 and a 3 in circles are as plain as day on the back of the Deore LX triple.
Good info,I did not know about that one.
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Old 03-04-15, 09:11 AM
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Good info,I did not know about that one.
Neither did I! I do see a 5.0 on the right crank arm with 175 E-11 also stamped on it. The left arm has ST 5.5 175 on it.

Thanks,

I thought the Strong seatpost might have a date but I dont see one on it.

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Old 03-04-15, 11:47 AM
  #33  
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Date of Manufacture of Bicycle Components can be used to date a bike: component dating
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Old 03-04-15, 12:47 PM
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Originally Posted by Bill Kapaun
The shifters are identical to my 86 Rockhopper. It's Red though.
Fork is different with that "lug" on top. makes me think possibly an earlier Stumpjumper?
Crank looks the same. Mine was 26-36-46.
Rear wheel/hub doesn't look stock for that era.

Fork looks like an 85 Stumpjumper-
1985 Specialized Stumpjumper

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85 Stumpjumper and Stumpy Team had esses in the fork lugs, which leads me to think this is a Stumpy Sport.
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Old 03-04-15, 01:45 PM
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Originally Posted by JDP526
I just looked at the serial number on my Specialized bike from the mid '80s: JS524384

Can anyone identify the bike by this number? I thought it was a Rockhopper I bought new around '85 but it may very well be a Stumpjumper.
Thanks,
JP


Originally Posted by oddjob2
Has the OP bothered to look for the date code on the back of the crankset? I am rebuilding a 1993 TREK 950; the date code 9 and a 3 in circles are as plain as day on the back of the Deore LX triple.
Thee OP or the Zombie hunter? This thread is 5 years old. JPD526 revived it
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Old 03-04-15, 02:00 PM
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Also different seatclusters.

Stumpy and Stumpy Team have fastback style, whereas the Stumpy Sport has capped seatstays on the sides of the seattube.
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Old 03-04-15, 02:32 PM
  #37  
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Lugged unicrown fork! It just screams 1987. How cute!

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Old 03-06-15, 01:48 PM
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Capped seatstay that LesterOfPuppets was referring to:

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Old 03-09-15, 07:45 PM
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I pulled the bottom bracket out of my '85 and there is a small amount of wear of bearing race on one side of the spindle. The BB is a 68x120 that is stamped on the spindle. Apparently, this isn't a common size now. I thought I would replace BB with a sealed bearing unit but it looks like 118 and 122 lengths are more common. Any recommendation on one to use? Thanks,
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Old 03-15-15, 07:58 PM
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My old '85 Rockhopper is back on the road again. I pulled the fork to clean and regrease, replaced spindle in bottom bracket and packed bearings, disassembled and cleaned the brakes, shifters, and then cleaned up the derailleurs. I had hubs laced up with new rims from Alex Rims and I installed a NOS Shimano freewheel.
Bike rides very smoothly and is very quiet w/o any squeaks, creaks, or rattles.
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Old 04-28-15, 04:44 AM
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Originally Posted by JDP526
I just looked at the serial number on my Specialized bike from the mid '80s: JS524384

Can anyone identify the bike by this number? I thought it was a Rockhopper I bought new around '85 but it may very well be a Stumpjumper.
Thanks,
JP
Little late but just saw your post. Specialized serials are not informational. They are random unique codes intended to be used as identifiers, as with insurance or police in case of theft or damage. They contain no information. As someone else said later in response to you, check your derailleurs and cross that with the info on bikepedia. Also, Specialized had a habit of switching between groups mid year based on inventory so the date code on the stuff is paramount since something bikepedia lists as using shimano may have still been given suntour as a one off.
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