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  1. #1
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    Looking for a mongoose Amplifier / Amp B3 bike

    Looking for a mongoose Amplifier B3 full bike. Any tips on where to find one are really well appreciated.

    pm me or email me hjalti.parelius(-a-)gmail.com

  2. #2
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    My AMP B2 may be what you are looking for. I attach and image - sorry it is dirty I could wash It !!!

    I bought my bike in 1996 from a guy who had just turned pro and was getting a bike from sponsors (not sure when he bought it).

    I rode the bike weekly for a couple of years (loved - loved – loved it) and then not at all for several years. Rode it recently (still sweet) - replaced the driver train - did not know it was vintage until someone told me the other day - since then I have been researching it and am quite impressed by what I have learned. A guy at a vintage bike shop in Wisconsin is helping me out and he advised that it’s the frame that makes it interesting and I could buy back the originals of the parts replaced for about $100.

    I saw your post while I was doing some research on my AMP.I be happy to discuss selling it to you. I'll email you directly too.
    Attached Thumbnails Attached Thumbnails Looking for a mongoose Amplifier / Amp B3 bike-amp-b3.jpg  

    Last edited by Still Snoozin; 03-10-2011 at 02:01 PM.

  3. #3
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    That's a B2, not a B3.
    Last edited by datasurfer; 03-10-2011 at 01:18 PM.

  4. #4
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    Here are some pics of my B3 which had a single downtube:




    That top tube gusset on the B3 is very similar to the gusset found on the contemporary Turner Flux. Mongoose never built a B3 based bike that I recall, but maybe I just missed it along the way. I know they moved on to their own "amplifier 2" frame later which I am pretty sure was not an Amp based frame.

    I owned a Mongoose Amplifier that I purchased new as a frameset in 1992/93 and it was much more flexy with the double down-tube. It was basically a re-badged B2. Having owned a Mongoose Amplifier/B2, a B3, and a B4 I personally favored the B3 as being the best handling and best looking with less flex. I wanted to like the B4 but never liked the handling of that bike. Wish I still had that original Amplifier though as it was ultralight and built with some nice select vintage 3dv parts.

    Here is a Amp thread with some B2 pics. http://www.retrobike.co.uk/forum/viewtopic.php?t=24463

  5. #5
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    Thanks fro the correction - Someoneelse told me it wasa B3 - I really don't have the background to know myself. I just bought a "bike" years ago that a buddy recommended. I am enjoying learning more about it. I also am trying to guess what year it might have been made.

    Does B1 mean it is older/newer ?? What years was the B1 made. What does B1,B2,B3,B4 indicate??

  6. #6
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    Quote Originally Posted by Still Snoozin
    Thanks fro the correction - Someoneelse told me it wasa B3 - I really don't have the background to know myself. I just bought a "bike" years ago that a buddy recommended. I am enjoying learning more about it. I also am trying to guess what year it might have been made.

    Does B1 mean it is older/newer ?? What years was the B1 made. What does B1,B2,B3,B4 indicate??
    I'm no expert myself on old AMP/Mongoose bikes, but here is what I do know. The first generation of frames which have the twin downtube are known as the AMP B2 or if made by AMP for Mongoose, the Mongoose Amplifier. I believe they came out 92-93. They are also distinguishable from later iterations of the product by the F1 fork which has black steel legs vs. aluminum alloy legs. The AMP B3 has a single thicker downtube and the F2 fork which has alloy legs. I don't know too much about the B3 or the B4. I have a Mongoose F1 fork on an old 1994 Lightspeed Obed, because it is just about the lightest suspension fork I could find. However, with certain frame models and sizes, there is not enough clearance between the parallelogram mechanism and the downtube of the frame for the fork to turn without interference. I solved this issue on the size small Obed by using a Chris King headset and a +5 baseplate.
    Last edited by datasurfer; 03-10-2011 at 01:23 PM.

  7. #7
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    Thanks everyone - this is good stuff !

  8. #8
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    Lotta incorrect info in this thread.
    Need: McMahon brake for roller cam mounts, Mountain Goat fork.

  9. #9
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    Please feel free to add what you know - I am learning as I go - Thanks

  10. #10
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    Quote Originally Posted by muddybuddy
    Lotta incorrect info in this thread.
    That helps. So enlighten us.

  11. #11
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    Twin downtube version is a b2 or mongoose amplifier the only difference being the stickers. This was the first readily available version. B3 was essentially the same but singledowntube. B4 had shorter seat stays with inturupted seat tube design. B5 was a linkage design similar to the late 90s FSR bikes.

    Fork names always start with F not B.
    Need: McMahon brake for roller cam mounts, Mountain Goat fork.

  12. #12
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    Quote Originally Posted by muddybuddy
    Twin downtube version is a b2 or mongoose amplifier the only difference being the stickers. This was the first readily available version. B3 was essentially the same but singledowntube. B4 had shorter seat stays with inturupted seat tube design. B5 was a linkage design similar to the late 90s FSR bikes.

    Fork names always start with F not B.
    Thanks Muddybuddy. I made the changes to the post, so as to not spew out misinformation on this forum. So was there ever a production model called the B1? How did it differ from the B2?

  13. #13
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    Quote Originally Posted by datasurfer
    Thanks Muddybuddy. I made the changes to the post, so as to not spew out misinformation on this forum. So was there ever a production model called the B1? How did it differ from the B2?
    I'm not sure, but I would assume there was some version or maybe just a prototype series before the B2. Maybe the great Oracle of Amp knowledge knows.
    Need: McMahon brake for roller cam mounts, Mountain Goat fork.

  14. #14
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    Thanks - So it sounds like mine is a B2 (is that correct? ) - what year was that built?

  15. #15
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    There never was a B-1 frame, the Mongoose Amplifier 2 was the same frame as the Amp B-3 except it came with a Risse supplied rear shock instead of the Amp thru-shaft shock. The colour of the Amplifier 2 was a blue main frame with polished swingarm instead of the black main frame of the Amplifier 1.

    I have a 20" size B-3 which I've been considering unloading from my collection. I have TOO many full suspension bikes at the moment, especially 26er ones.
    I don't post to generate business for myself or make like I'm better than sliced bread

  16. #16
    DFA
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    Quote Originally Posted by DeeEight
    the Mongoose Amplifier 2 was the same frame as the Amp B-3 except it came with a Risse supplied rear shock instead of the Amp thru-shaft shock. The colour of the Amplifier 2 was a blue main frame with polished swingarm instead of the black main frame of the Amplifier 1
    Wrong. Mongoose switched to their own frame in 95 and called it Amplifier2.



    It was the same rear end later used by Litespeed for their Hiwassee

    Last edited by DFA; 03-11-2011 at 05:46 AM.

  17. #17
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    I have 2 AMP forks I'm willing to sell.. an original steel, new bushings and shafts.. Also an aluminum with very little time on.. Like new.. plus extra shafts, and a spring..

  18. #18
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    Quote Originally Posted by DFA
    Wrong. Mongoose switched to their own frame in 95 and called it Amplifier2.



    It was the same rear end later used by Litespeed for their Hiwassee

    Glad you posted the amplifier 2 pics. I couldn't recall if it was a mac strut or not, but I knew it was not an amp research frame.

  19. #19
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    Just for comparison. I purchased this bike new in 94 or 95. It's a Mongoose Amplifier. I should have left the decals alone, but hated them back then. This must have been the last year for the AMP built Mongoose.


  20. #20
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    Thats a sweet looking amplifier! I think your timing is about right for that black Amplifier as I recall the black amplifiers showing up at the races during the 94 season. I remember having tried two of the original iterations of cannondale FS bikes (Delta V 1000, and Delta V2000) in the 90-92 time frame and was one of the first guys in St.Louis to move to a newly-released Amplifier frame and fork. Man...that mac-strut/horst link design rear suspension was night and day better than those cannondales thats for sure.

    Like yours mine started its life with the steel-legged F2 amp fork. Later I upgraded to the lighter all aluminum alloy F3 with what they referred to as an HD/DH kit which used a through-shaft shock damper on each side as opposed to the single damper on one side. The F3's spring also sat in the opposite direction of the original F2 forks spring. Thanks for the pic of that B2 this thread is starting to work on my desire to own another one.

  21. #21
    DFA
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    Now if we're talking hen's teeth, I was running this in 94/95. S/N 0025. 5" of travel *.





    * 2 1/2" vertically + 2 1/2" laterally..........even with the TWP brace and DFA Engineering booster.

  22. #22
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    Great looking rocky ! Lateral suspension flex was the biggest drawback for sure. My B2 & B3 were both equipped with the seat stay brace. I found that although I preferred the ride of the amp rear thru shaft shock, the risse genesis rear shock really helped with the lateral flexiness. The shock shaft is ultimately what connects the rear of the bike to the main frame and the small size of the stock shocks shaft really exacerbates the flex issues. Anyone looking at buying an amp frame can still get the risse shock for those frames so keep that in mind.

  23. #23
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    worked for Mongoose

    Okay this is what I know, now take this for thought
    I managed one of the larger Mongoose shops in MA and was a sponsored rider
    had an original Mongoose twin tube amp - broke it
    rode a amplifier (B3) with the oval downtube (still have it)
    1996 they had the all aluminum Frank The Welder Amplifier II
    front was FTW rear was Amp Research this bike had a rockshock not AMP
    could never get the bike square to shift right went thru 3 frames and went back to the Amplifier
    the Black frame bikes had Amp shocks on the front and oil and coil in rear
    the FTW bikes had a reese (sp) air oil that was impossible to keep the air in
    My B3 has one of the first Red Judy Downhills that was all tricked out by a rockshoxs tech guru

    Does this help?
    BTW, the mongoose folks would get pretty pissy if you called the bike an AMP vs Amplifier
    I will get a photo of my Amplifier up soon it is all sachs quartz groupo with Grip shift
    My wife (GF at the time) raced a Mongoose IBOC frame made by FTW because they could not make a 14 Amplifier that actually functioned
    and my other bike is a 94 yo eddy fat chance that had a Mavic MTB Groupo on it

  24. #24
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    Found one in pretty much mint condition off ebay
    I agree even though the Mongoose Amplifier and the B2 are the same frame, in my mind they are still different (im an old mongoose racer my self)
    Attached Thumbnails Attached Thumbnails Looking for a mongoose Amplifier / Amp B3 bike-fullview_smaller.jpg  

    Looking for a mongoose Amplifier / Amp B3 bike-chainset_smaller.jpg  

    Looking for a mongoose Amplifier / Amp B3 bike-rear_brakes_smaller.jpg  


  25. #25
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    Also if anyone has an IBOC team frame (the triangular top tube one) id be happy to take it

  26. #26
    DFA
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    Quote Originally Posted by Duc-Duc-Guzzi
    the FTW bikes had a reese (sp) air oil that was impossible to keep the air in
    Where did you get your info about Frank welding these up? I'm pretty sure they had a Made in Taiwan sticker on the seat tube.

  27. #27
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    DFA you talking about the amplifier II or?

    The Mongoose amplifier was built by AMP research for mongoose

  28. #28
    DFA
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    The Amplifier2. Duc-Duc-Guzzi said Frank Wadelton built them in his post. I'd be really surprised if that were true.

  29. #29
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    okay just saying what I know
    they sent me a anodized clear alum frame called a Amplifier team
    the top tube was a triangle shape Like my wifes same year IBOC
    the stem was FTW and I was told the bike was made by him
    when we had issues with the square section tube rear they sent replacement derailleur hangers that were stamped FTW

    just my two cents

    still like may Black mongoose Amplifier better than that one

    remember there was the Amplifier Team - the polished Alum and the Amplifier comp painted blue

  30. #30
    DFA
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    I stand corrected. Just got an email from Frank, and he did weld (in his words) "several hundred of them", "all the frame components".

    So I (most likely) have a NOS FTW built frame. I'll be dipped.

  31. #31
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    no disrespect to frank but those frames were a nightmare and then some

  32. #32
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    As an FTW / Amp side note, he also built the front triangles for the Dean frames that used the actual AMP B3 rear ends. I think it was called the Bam Bam?

    Photos not mine, But I have most of the pieces to put one together if I ever get around to it.
    Attached Thumbnails Attached Thumbnails Looking for a mongoose Amplifier / Amp B3 bike-dean3.jpg  

    Need: McMahon brake for roller cam mounts, Mountain Goat fork.

  33. #33
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    I got an amplifier with the twin top tubes that I picked up a couple years ago. Was riding it and had issues with the rear shock and sent it to amp and they still were able to service it. Got it ready to build back up as a light weight Full Suspension. Just need to re-pack the 7 speed wheelset and put it back together. I liked how light it was and it seemed like it would be perfect for long flat rides here in FL. One of the lightest full suspension frames out there still if you are a weight weenie.

  34. #34
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    I can not find a single photo of the FTW Amp bike on the web!
    I did email one of my old customers to see if the bike was still in the basement and if he would part with it

  35. #35
    DFA
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    I was sure there was a Made in Taiwan sticker on the frame. Been second guessing myself quite a bit lately after a head injury in December, and an accompanying memory loss, so I checked when I got home from work (after I remembered).



    The frame is a Comp. A plausible theory would be Frank made the Teams, and the Comps were made in the Orient. Perhaps he made the rear ends for all of them. Who knows.

  36. #36
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    Hi, I did weld a bunch of "Mongoose Amplifier II frames. I didn't design them or any of the products made at that facility in Chandler AZ.

    Mongoose copied the bike after about 1-1/2 years and had it done somewhere in typical fashion. They then forgot to pay the invoice for eternity.

    I built the frames for the Lopes and Donovan I am sure. I remember seeing Lopes at the shop. He sat on my desk.

    So that is how I remember it. Who knows what really happened.

  37. #37
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    Quote Originally Posted by Duc-Duc-Guzzi
    I can not find a single photo of the FTW Amp bike on the web!
    I did email one of my old customers to see if the bike was still in the basement and if he would part with it

    I know where there are a couple of them. I know where there is a sano one..

  38. #38
    DFA
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    Thanks for dropping in and giving us your 411, Frank.

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    my customer sold it to a kid in 99 who left it out side under a deck

    things I would want to do is keep the FTW front end and get the older round tube B3 rear
    I always thought the issue was the rear section not running true and square
    the one bike that did shift like a dream ends up going to a paperboy to run errands with go figure

  40. #40
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    Okay here are the photos of my Mongoose AMP B3 Build
    http://duc-duc-guzzi.blogspot.com/20...lifier-b3.html
    the Stats
    Mongoose Oval down tube frame
    Tuned AMP Shock
    TMP rear brace
    Advent brake horse shoes
    Judy red DH tuned for me
    IBOC Stem
    Club Roost Bars
    Team Issue Clear 8 Spd Grip Shifts
    Paul's Canti front brake and canti lever in Blue
    Paul's V brake and V brake lever in Blue - best upgrade I made
    Sachs Quartz rear Der with a Sram snake and Pulley - this made the bike shift right!
    LX Front Der - It was the best that fit - there was no XTR option
    LX cranks - I wanted non CNC black forged cranks
    Wheels Mavic Hoops DT swiss Spokes and LX hubs (again wanted Black and these were the new, at the time LX) with still a set of Blonde Panaracers

  41. #41
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    I have a frank welded Amp II I got it about the same time as leigh and brian....

  42. #42
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    How did the bike do on trails, im also lookin at one to buy

    Quote Originally Posted by Still Snoozin View Post
    My AMP B2 may be what you are looking for. I attach and image - sorry it is dirty I could wash It !!!

    I bought my bike in 1996 from a guy who had just turned pro and was getting a bike from sponsors (not sure when he bought it).

    I rode the bike weekly for a couple of years (loved - loved Ė loved it) and then not at all for several years. Rode it recently (still sweet) - replaced the driver train - did not know it was vintage until someone told me the other day - since then I have been researching it and am quite impressed by what I have learned. A guy at a vintage bike shop in Wisconsin is helping me out and he advised that itís the frame that makes it interesting and I could buy back the originals of the parts replaced for about $100.

    I saw your post while I was doing some research on my AMP.I be happy to discuss selling it to you. I'll email you directly too.

  43. #43
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    I have a Mongoose Amplifier I built from the frame & fork set in '94 and I need to replace the forks. I drove into the garage without remembering that my Amp was on the Thule roof rack. The fork was the weak link and the linkage snapped apart and the tubes bent a little too. The guy at the LBS says that he gets one of those every month.

    I have been looking for a pair of originals with no luck yet. Now that I'm here I notice that others have relaces the Amp forks with other ones such as Rock Shox. If I replace the originals with other ones I would like to make sure they fit and the geometry works well with the frame. I don't want to feel as though I'm riding on a chopper. I'm hoping to find a pair of originals or a suitable pair recommended with the proper size I need to find.

    EDIT: Call off the dogs.....I found a brand new set of F-1 forks up for auction and I worked a deal with the seller. I couldn't be happier. They are as nice and shiny as the day they were made and include owner/service manual. I will back on the trails in no time.
    Last edited by Ppossum; 04-09-2012 at 11:39 PM.

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