1984 Trek 850 MTB 24”
11-08-22, 03:00 PM
#1
Full Member
Thread Starter
1984 Trek 850 MTB 24”
Just picked this up today. I thought all Trek 850’s were built out of Reynolds 531AT tubing but this one has a Tange Prestige decal.
Frame has one dent on top tube and lots of scratches…
Frame has one dent on top tube and lots of scratches…
Likes For Chriscraft760:
11-09-22, 08:20 AM
#2
Full Member
Thread Starter
Serial number 143488
i hadn’t noticed the surface rust on the inner chain stay.
Small dent by seat lug.
i hadn’t noticed the surface rust on the inner chain stay.
Small dent by seat lug.
11-09-22, 08:31 AM
#3
Senior Member
Join Date: Nov 2010
Posts: 3,504
Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
Quoted: 586 Post(s)
Liked 612 Times
in
447 Posts
That's apparently a 1985 model. The 1984 catalog says Reynolds, but the 1985 catalog lists Tange Prestige as the tubeset.
https://www.vintage-trek.com/images/t...ll-Terrain.pdf
Visually, they look very similar.
Hopefully the rust on the chainstay isn't too terrible. Sometimes it looks worse than it is. I'd give it an oxalic acid bath in any case.
https://www.vintage-trek.com/images/t...ll-Terrain.pdf
Visually, they look very similar.
Hopefully the rust on the chainstay isn't too terrible. Sometimes it looks worse than it is. I'd give it an oxalic acid bath in any case.
11-09-22, 09:25 AM
#4
Full Member
Join Date: Aug 2012
Location: Upper third of the central USA
Posts: 490
Bikes: N+1
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 227 Post(s)
Liked 645 Times
in
318 Posts
As is there's not much value there -- $100-$150 tops on a good day. A tear down and rebuild replacing saddle, cables, worn out bits, cleaning and touching up the paint, adding tires and tubes, etc. perhaps $400+ to the right person. Nice bike, big, hard to find, but few out there who will fit or want it. If it's your size bring it back to life and ride it. If not, the parts plus labor might be a wash on value for a flip. Just IMHO.
11-09-22, 01:04 PM
#5
Full Member
Thread Starter
So it must have been built in 1984 for the 1985 model year.
Likes For Chriscraft760:
11-09-22, 04:09 PM
#6
Senior Member
Paging mountaindave .
__________________
My bikes: '81 Trek 957, '83 Trek 720, '85 Trek 500, '85 Trek 770,'81 Merckx, '85 Centurion Cinelli, '85 Raleigh Portage, '92 RB-2, '09 Bianchi
My bikes: '81 Trek 957, '83 Trek 720, '85 Trek 500, '85 Trek 770,
11-10-22, 06:07 PM
#7
tantum vehi
Join Date: Jul 2008
Location: Flathead Valley, MT
Posts: 4,440
Bikes: More than I care to admit
Mentioned: 153 Post(s)
Tagged: 0 Thread(s)
Quoted: 1167 Post(s)
Liked 992 Times
in
491 Posts
Seller has already graciously alerted me to the find and we have connected. Thanks, John. 
__________________
1970 Gitane TdF; 1973 Gitane TdF
1979 Trek 710; 1981 Trek 412; 1981 Trek 710
1984 Specialized Stumpjumper Sport; 1985 Specialized Allez SE; 1988 Specialized Sirrus; 1989 Specialized Rock Combo
1984 Ross Mt. Hood
1988 Centurion Ironman Expert
1991 Bridgestone RB-1
1992 Serotta Colorado TG
2015 Elephant NFE
1979 Trek 710; 1981 Trek 412; 1981 Trek 710
1984 Specialized Stumpjumper Sport; 1985 Specialized Allez SE; 1988 Specialized Sirrus; 1989 Specialized Rock Combo
1984 Ross Mt. Hood
1988 Centurion Ironman Expert
1991 Bridgestone RB-1
1992 Serotta Colorado TG
2015 Elephant NFE
Last edited by mountaindave; 11-10-22 at 06:18 PM.
11-10-22, 06:22 PM
#8
tantum vehi
Join Date: Jul 2008
Location: Flathead Valley, MT
Posts: 4,440
Bikes: More than I care to admit
Mentioned: 153 Post(s)
Tagged: 0 Thread(s)
Quoted: 1167 Post(s)
Liked 992 Times
in
491 Posts
That's interesting as the number was assigned mid-August, but clearly built as a 1985 model. Not sure the flow of frames vs. assignment of serial numbers.
Thanks for the extra pictures.
Thanks for the extra pictures.
__________________
1970 Gitane TdF; 1973 Gitane TdF
1979 Trek 710; 1981 Trek 412; 1981 Trek 710
1984 Specialized Stumpjumper Sport; 1985 Specialized Allez SE; 1988 Specialized Sirrus; 1989 Specialized Rock Combo
1984 Ross Mt. Hood
1988 Centurion Ironman Expert
1991 Bridgestone RB-1
1992 Serotta Colorado TG
2015 Elephant NFE
1979 Trek 710; 1981 Trek 412; 1981 Trek 710
1984 Specialized Stumpjumper Sport; 1985 Specialized Allez SE; 1988 Specialized Sirrus; 1989 Specialized Rock Combo
1984 Ross Mt. Hood
1988 Centurion Ironman Expert
1991 Bridgestone RB-1
1992 Serotta Colorado TG
2015 Elephant NFE
11-10-22, 06:42 PM
#9
Senior Member
You're welcome. Now I'm not tempted.
__________________
My bikes: '81 Trek 957, '83 Trek 720, '85 Trek 500, '85 Trek 770,'81 Merckx, '85 Centurion Cinelli, '85 Raleigh Portage, '92 RB-2, '09 Bianchi
My bikes: '81 Trek 957, '83 Trek 720, '85 Trek 500, '85 Trek 770,
11-10-22, 07:27 PM
#10
Senior Member
Join Date: Nov 2010
Posts: 3,504
Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
Quoted: 586 Post(s)
Liked 612 Times
in
447 Posts
I don't know how they schedule production, but given they had a finite number of employees, they undoubtedly spend much of the year getting frames ready for the next. After all, that wasn't the only model, and they can't cram them all in towards the end of the year. I guess the only issue is where do they keep them!
11-10-22, 07:31 PM
#11
tantum vehi
Join Date: Jul 2008
Location: Flathead Valley, MT
Posts: 4,440
Bikes: More than I care to admit
Mentioned: 153 Post(s)
Tagged: 0 Thread(s)
Quoted: 1167 Post(s)
Liked 992 Times
in
491 Posts
Mind you, we’ve just connected, not negotiated. I’m staying out of the evaluation side of this to avoid conflict of interest.
__________________
1970 Gitane TdF; 1973 Gitane TdF
1979 Trek 710; 1981 Trek 412; 1981 Trek 710
1984 Specialized Stumpjumper Sport; 1985 Specialized Allez SE; 1988 Specialized Sirrus; 1989 Specialized Rock Combo
1984 Ross Mt. Hood
1988 Centurion Ironman Expert
1991 Bridgestone RB-1
1992 Serotta Colorado TG
2015 Elephant NFE
1979 Trek 710; 1981 Trek 412; 1981 Trek 710
1984 Specialized Stumpjumper Sport; 1985 Specialized Allez SE; 1988 Specialized Sirrus; 1989 Specialized Rock Combo
1984 Ross Mt. Hood
1988 Centurion Ironman Expert
1991 Bridgestone RB-1
1992 Serotta Colorado TG
2015 Elephant NFE
11-10-22, 08:31 PM
#12
Full Member
Thread Starter
As is there's not much value there -- $100-$150 tops on a good day. A tear down and rebuild replacing saddle, cables, worn out bits, cleaning and touching up the paint, adding tires and tubes, etc. perhaps $400+ to the right person. Nice bike, big, hard to find, but few out there who will fit or want it. If it's your size bring it back to life and ride it. If not, the parts plus labor might be a wash on value for a flip. Just IMHO.
this was an impulse buy as it is in my size. Originally I did think it was an 84 frame based on the serial number. But yeah, based on the decals, Tange tubing and components, this place’s it as a 1985 model. It’s mostly original, I’ll need to find a Deore long cage rear derailleur to complete it. An eval of $100 to $150 puts me at a loss if I’d were to sell. Oh well, guess it’s a keeper then.
Will need to scrape and clean up that rusty chain stay and see if there isn’t any real damage.
11-10-22, 09:00 PM
#13
Full Member
Join Date: Aug 2012
Location: Upper third of the central USA
Posts: 490
Bikes: N+1
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 227 Post(s)
Liked 645 Times
in
318 Posts
this was an impulse buy as it is in my size. Originally I did think it was an 84 frame based on the serial number. But yeah, based on the decals, Tange tubing and components, this place’s it as a 1985 model. It’s mostly original, I’ll need to find a Deore long cage rear derailleur to complete it. An eval of $100 to $150 puts me at a loss if I’d were to sell. Oh well, guess it’s a keeper then.
Will need to scrape and clean up that rusty chain stay and see if there isn’t any real damage.
Will need to scrape and clean up that rusty chain stay and see if there isn’t any real damage.
A keeper is not a bad result, though, and presuming that chain stay is solid you can ride and enjoy without worrying about marring the finish!
11-11-22, 06:34 AM
#14
Senior Member
Join Date: Nov 2010
Posts: 3,504
Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
Quoted: 586 Post(s)
Liked 612 Times
in
447 Posts
this was an impulse buy as it is in my size. Originally I did think it was an 84 frame based on the serial number. But yeah, based on the decals, Tange tubing and components, this place’s it as a 1985 model. It’s mostly original, I’ll need to find a Deore long cage rear derailleur to complete it. An eval of $100 to $150 puts me at a loss if I’d were to sell. Oh well, guess it’s a keeper then.
Will need to scrape and clean up that rusty chain stay and see if there isn’t any real damage.
Will need to scrape and clean up that rusty chain stay and see if there isn’t any real damage.
11-11-22, 09:46 AM
#15
Thrifty Bill
Join Date: Jan 2008
Location: Mountains of Western NC
Posts: 23,523
Bikes: 86 Katakura Silk, 87 Prologue X2, 88 Cimarron LE, 1975 Sekai 4000 Professional, 73 Paramount, plus more
Mentioned: 96 Post(s)
Tagged: 0 Thread(s)
Quoted: 1236 Post(s)
Liked 964 Times
in
628 Posts
If the estimate above is for the entire bike as pictured, it’s low. If it is the frameset, it’s close. All those early MTB components have value. Likely $300 to $400 in parts PLUS the frameset. I’ve owned and sold three 1984 Trek 850s.
The nice thing about black is it is super easy to touch up.
The nice thing about black is it is super easy to touch up.
Last edited by wrk101; 11-11-22 at 10:06 AM.
