Page 1 of 2 12 LastLast
Results 1 to 35 of 47
Like Tree35Likes

Thread: 1962 Ampeg Reverberocket screws and foot switch

  1. #1
    Supporting Member
    Join Date
    Dec 2009
    Location
    UK
    Posts
    3,002

    1962 Ampeg Reverberocket screws and foot switch

    What are the correct screws for the back panel of this amp? The one I have has had nasty, oversized, zinc-plated twin-thread chipboard screws fitted and I want to get it back to original.

    Also, what are the dimensions and construction of the foot switch? It would be good if anyone has pictures.

  2. #2
    Old Timer Tom Phillips's Avatar
    Join Date
    Jun 2006
    Location
    California, USA
    Posts
    3,412
    Mick,
    Ampeg used clutch head screws. These days the term clutch head gets used for various types of screws so I've attached a photo of the exact type that Ampeg used.
    clutch-heas-screw.jpeg

    The closest photos I can find of a real vintage Ampeg are the following of a 1964 Rocket. I included closeups of the screws and the foot switch. The foot switch is hard wired to the chassis.
    1964-ampeg-r-12a-rocket_1.jpg1964-ampeg-r-12a-rocket_2.jpg1964-ampeg-footswitch.jpg

    Hope these help.
    Tom
    Last edited by Tom Phillips; 02-12-2018 at 11:23 PM. Reason: Typo Repair
    pdf64, Chuck H, TomCarlos and 4 others like this.

  3. #3
    Lifetime Member Enzo's Avatar
    Join Date
    May 2006
    Location
    Lansing, Michigan, USA
    Posts
    29,133
    And if you look at it, you see they made the foot switch from a door stop.
    Chuck H, g1 and mtlbasslad like this.
    Education is what you're left with after you have forgotten what you have learned.

  4. #4
    Supporting Member
    Join Date
    Dec 2009
    Location
    UK
    Posts
    3,002
    Well, I learned something there. I don't get to see many old Ampegs and the ones I have all had replacement screws. Either someone harvested them for resale, or switched them out for convenience. I don't think there's much prospect of finding them over here at reasonable cost and may end up using the Phillip's head variety from Fliptops. Even those will probably cost a packet with shipping and import costs. The UK has a punitive policy on items imported from non-EU countries. The threshold is £15 including shipping. A penny over and that price becomes £24.60. If there's import duty payable then this escalates even more. It makes sourcing bits in the US really expensive. Especially so when some suppliers have ridiculous shipping rates to the UK (I was quoted $30 shipping for a single wah inductor from one place as they had set the packaged weight as 2lb) or have flat rates based on minimum weight/volume that penalize small-order items.

  5. #5
    Old Timer
    Join Date
    May 2006
    Location
    Chill-Ville, VA
    Posts
    2,296
    I'm not sure my 63 Reverberocket came with the footswitch (had been cut off), but my 66 & 67 Reverberocket IIs both came with 2-button hardwired switches. As for the screws, many owners switched them out for Phillips head; I did. Ie kept some, but I managed to find some "normal" screws of the same length, thread count and pitch, and head size at my hardware store.

    Justin
    "If you're using one of those Digiyuk module type things..." - Chuck H. -
    "When receiving a shock I emit a strange loud high pitched girlish squeak." - Alex R -
    "All I ever managed to do with that amp was... kill small rodents within a 50 yard radius of my practice building." - Tone Meister -

  6. #6
    Lifetime Member Enzo's Avatar
    Join Date
    May 2006
    Location
    Lansing, Michigan, USA
    Posts
    29,133
    Over the years, I like many others replaced the clutch head screws in those cabinets with phillips, but I keep the old screws. Now that I retire, I have a bin of them. They do sell for stupid money, and I have a buyer for mine.
    Education is what you're left with after you have forgotten what you have learned.

  7. #7
    Senior Member nevetslab's Avatar
    Join Date
    Apr 2010
    Location
    Burbank, CA
    Posts
    559
    It's been years since I've worked on the old Ampegs having htge clutch head screws. What I haven't seen reported in this thread is WHAT the screw size is. # 8-32? # 6-32? # 10-32? Metric thread?
    Logic is an organized way of going wrong with confidence

  8. #8
    Lifetime Member Enzo's Avatar
    Join Date
    May 2006
    Location
    Lansing, Michigan, USA
    Posts
    29,133
    They are wood/sheet-metal screws, so they have a size number, but not a thread count. They would be imperial, not metric, as we did nothing in metric in those days.

    I have a box of them in front of me, but no ruler, so eyeballing them, I;d say #8.
    Education is what you're left with after you have forgotten what you have learned.

  9. #9
    Old Timer Leo_Gnardo's Avatar
    Join Date
    Sep 2012
    Location
    Dogpatch-on-Hudson
    Posts
    4,519
    Quote Originally Posted by nevetslab View Post
    It's been years since I've worked on the old Ampegs having htge clutch head screws. What I haven't seen reported in this thread is WHAT the screw size is. # 8-32? # 6-32? # 10-32? Metric thread?
    Holding the back cover on. Round head wood screws maybe #6 or 8.

  10. #10
    Senior Member nevetslab's Avatar
    Join Date
    Apr 2010
    Location
    Burbank, CA
    Posts
    559
    Often called 8-15 thread, if memory serves. Thanks. I'ts been over 40 yrs since I've seen one.
    pdf64 likes this.
    Logic is an organized way of going wrong with confidence

  11. #11
    Old Timer olddawg's Avatar
    Join Date
    Dec 2007
    Location
    Carlsbad, CA and Kona, HI
    Posts
    2,433
    I have a 1960 Rocket. The back panel is held on with drywall screws, lol. Works. It's a very ratty, ugly old amp made in NYC. When I use it I just use it as a speaker cab (it has an Emenence in it with the original speaker blown and setting in a box in the garage) and I run an Epi VJ into it (set behind it) and a Bad Monkey and a compressor into that. You would not believe the complements I get on my "vintage" tone and all the questions I get. Lol!
    pdf64 likes this.

  12. #12
    g1
    g1 is offline
    don't forget the joker g1's Avatar
    Join Date
    Feb 2010
    Location
    Canada, somewhere north of Fargo
    Posts
    9,321
    I think a lot of those screws got replaced because people didn't have a tool for them. In Canada, Robertson (square head) screws are very common, so everyone has at least red and green size Robertson screwdrivers. I believe the green size fits in those and does the job if the head is in good shape. I have the proper clutch head driver but often use the green Robertson as it is usually out with my more common tools.
    These screws were more common in classic auto stuff so you can sometimes find them from those type of vendors. However, they don't seem to have the flange like the ampegs do, which is probably why fliptops is selling them for ten bucks each.
    nevetslab likes this.
    Certified Dotard

  13. #13
    Old Timer
    Join Date
    May 2006
    Location
    Chill-Ville, VA
    Posts
    2,296
    Well for that kind of money I'll go dig them out of my junk drawer & sell them at a discount! And mine are VINTAGE!

    Justin
    g1 likes this.
    "If you're using one of those Digiyuk module type things..." - Chuck H. -
    "When receiving a shock I emit a strange loud high pitched girlish squeak." - Alex R -
    "All I ever managed to do with that amp was... kill small rodents within a 50 yard radius of my practice building." - Tone Meister -

  14. #14
    Lifetime Member Enzo's Avatar
    Join Date
    May 2006
    Location
    Lansing, Michigan, USA
    Posts
    29,133
    I did have the tools and I replaced them anyway. I had hand drivers for my clutch heads, and a phillips driver in my power drill. And even later when I got Xcelite 99 clutch head blades for my 99 holder for my drill, I still would rather just reach for the phillips drill motor and zip open the cab. WHy have odd hardware?
    Education is what you're left with after you have forgotten what you have learned.

  15. #15
    Supporting Member
    Join Date
    Dec 2009
    Location
    UK
    Posts
    3,002
    Interestingly, in the book 'Ampeg - the story behind the sound' it states that the move to clutch head screw was made when they changes to the blue check covering.

    I've ordered some 4mmx30mm truss-head phillips self-tapping screws in stainless (these have a head diameter of 8.9mm), along with some form G washers that have a diameter of 12mm. I think when these are all polished they'll look like nickel and be visually OK. I gave up on the clutch head screws.
    g1 likes this.

  16. #16
    Lifetime Member Enzo's Avatar
    Join Date
    May 2006
    Location
    Lansing, Michigan, USA
    Posts
    29,133
    The value of the clutch head screws is when a guy has a vintage piece he wants looking stock and he is missing one or two of the clutch heads.
    Education is what you're left with after you have forgotten what you have learned.

  17. #17
    Old Timer Tom Phillips's Avatar
    Join Date
    Jun 2006
    Location
    California, USA
    Posts
    3,412
    Every screw I install becomes a "Phillips" screw no matter what the driver shape is.
    Tom P
    Last edited by Tom Phillips; 02-14-2018 at 08:26 PM.
    g1 and The Dude like this.

  18. #18
    Lifetime Member Enzo's Avatar
    Join Date
    May 2006
    Location
    Lansing, Michigan, USA
    Posts
    29,133
    So then when you mix vodka and orange juice?
    Education is what you're left with after you have forgotten what you have learned.

  19. #19
    Old Timer Tom Phillips's Avatar
    Join Date
    Jun 2006
    Location
    California, USA
    Posts
    3,412
    Nope. Do not dilute!

  20. #20
    Lifetime Member Enzo's Avatar
    Join Date
    May 2006
    Location
    Lansing, Michigan, USA
    Posts
    29,133
    And at Xmas you roast a Tom Turkey?
    Education is what you're left with after you have forgotten what you have learned.

  21. #21
    Old Timer Tom Phillips's Avatar
    Join Date
    Jun 2006
    Location
    California, USA
    Posts
    3,412
    An unfortunate expression from my perspective.

  22. #22
    Lifetime Member Enzo's Avatar
    Join Date
    May 2006
    Location
    Lansing, Michigan, USA
    Posts
    29,133
    Whadaya expect, you dissed my screwdriver joke.
    Education is what you're left with after you have forgotten what you have learned.

  23. #23
    Supporting Member
    Join Date
    Dec 2009
    Location
    UK
    Posts
    3,002
    I've found a few pictures of the foot switch for the '62 amp. Mine previously had a metal cradle and there's a shadow and screw holes where this attached. So it should have a metal 2-button switch, but I'm missing the dimensions and how it's constructed. It looks like later amps had a spring retainer and plastic switch.

  24. #24
    Supporting Member Chuck H's Avatar
    Join Date
    May 2007
    Location
    pacific north west
    Posts
    12,450
    Posts #16 to #22 read like a bit piece
    g1 and The Dude like this.
    "So I acquired it for the purpose of fixing it up - in case I run out of things to do with the rest of my life..." tubeswell

    "...less ear-friendly but handy for jazz." Leo_Gnardo

    "Shut up, you big dumb poopy-head!" Justin Thomas

  25. #25
    g1
    g1 is offline
    don't forget the joker g1's Avatar
    Join Date
    Feb 2010
    Location
    Canada, somewhere north of Fargo
    Posts
    9,321
    BTW a phillips screwdriver is made with vodka and phillips milk of magnesia, hold the OJ (may cause curdling).
    nevetslab likes this.
    Certified Dotard

  26. #26
    Supporting Member The Dude's Avatar
    Join Date
    May 2010
    Location
    Sioux Falls, SD
    Posts
    4,692
    I thought a phillips screwdriver was just a regular screwdriver made with Phillips vodka.
    g1 likes this.
    “Yeah, well, you know, that’s just, like, your opinion, man.”

  27. #27
    Supporting Member Chuck H's Avatar
    Join Date
    May 2007
    Location
    pacific north west
    Posts
    12,450
    I thought it was just Phillip's screwdriver.
    g1 and The Dude like this.
    "So I acquired it for the purpose of fixing it up - in case I run out of things to do with the rest of my life..." tubeswell

    "...less ear-friendly but handy for jazz." Leo_Gnardo

    "Shut up, you big dumb poopy-head!" Justin Thomas

  28. #28
    Lifetime Member Enzo's Avatar
    Join Date
    May 2006
    Location
    Lansing, Michigan, USA
    Posts
    29,133
    phillips screwdriver is made with vodka and phillips milk of magnesia
    No shit?
    Justin Thomas and g1 like this.
    Education is what you're left with after you have forgotten what you have learned.

  29. #29
    Old Timer
    Join Date
    Sep 2011
    Location
    Pace, FL
    Posts
    1,278
    Quote Originally Posted by Chuck H View Post
    I thought it was just Phillip's screwdriver.
    Some of the japanese manuals they refer to them as positive and negative screwdrivers.
    nosaj

  30. #30
    Supporting Member Chuck H's Avatar
    Join Date
    May 2007
    Location
    pacific north west
    Posts
    12,450
    How does a negative screwdriver work? Can I drive home from the bar after drinking a few? Is it a hangover remedy?
    g1 and The Dude like this.
    "So I acquired it for the purpose of fixing it up - in case I run out of things to do with the rest of my life..." tubeswell

    "...less ear-friendly but handy for jazz." Leo_Gnardo

    "Shut up, you big dumb poopy-head!" Justin Thomas

  31. #31
    Supporting Member Chuck H's Avatar
    Join Date
    May 2007
    Location
    pacific north west
    Posts
    12,450
    Quote Originally Posted by g1 View Post
    BTW a phillips screwdriver is made with vodka and phillips milk of magnesia.
    Quote Originally Posted by Enzo View Post
    No shit?
    Ah! You caught the attention of the retired members with that one. Two birds with one stone
    "So I acquired it for the purpose of fixing it up - in case I run out of things to do with the rest of my life..." tubeswell

    "...less ear-friendly but handy for jazz." Leo_Gnardo

    "Shut up, you big dumb poopy-head!" Justin Thomas

  32. #32
    Supporting Member mtlbasslad's Avatar
    Join Date
    May 2010
    Location
    Rawdon, Quebec, Canada
    Posts
    94
    On the screwdriver theme, I recently learned (will it ever stop?) about another type...

    Besides Phillips & Pozidriv, there is JIS (Japan Industry Standard) used on motorcycles like my Suzuki DL650 which has a slightly different shape - the end is ground flatter.

    A mismatch can lead to messing up screwheads, so beware all you screwballs!

    There, after 6 years I finally posted something that was not asking for help. Gotta say I get as much in giggles (& occasional snort) as tech advice on this forum
    g1 likes this.

  33. #33
    Lifetime Member Enzo's Avatar
    Join Date
    May 2006
    Location
    Lansing, Michigan, USA
    Posts
    29,133
    Then look up Reed & Prince, also called Frearson, which is similar to phillips, but instead of the fillet between points, the tip is straight crosspoints.

    https://en.wikipedia.org/wiki/List_of_screw_drives
    mtlbasslad likes this.
    Education is what you're left with after you have forgotten what you have learned.

  34. #34
    Supporting Member mtlbasslad's Avatar
    Join Date
    May 2010
    Location
    Rawdon, Quebec, Canada
    Posts
    94
    Well, that was a fun read - thanks Enzo. I like the pentalobe...

    And now to do something productive with my day
    I'm not old - I'm vintage

  35. #35
    Lifetime Member Enzo's Avatar
    Join Date
    May 2006
    Location
    Lansing, Michigan, USA
    Posts
    29,133
    I first saw the tri-wing holding trim strips in place on the Washington DC Metro (subway). I got some, and it seemed about impossible to stick anything in the hole and turn it. A lot of the other types you can find a size of flat screwdriver blade that will wedge into the hole and turn out the screw. The tri wouldn't let me get a grip.

    I needed security screws in another industry, and found the spanners were the hardest to extract without the proper driver.
    mtlbasslad likes this.
    Education is what you're left with after you have forgotten what you have learned.

Page 1 of 2 12 LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Fender HRDIII foot switch lag
    By winterbird in forum Maintenance, Troubleshooting & Repair
    Replies: 2
    Last Post: 09-23-2012, 06:43 PM
  2. Trem Foot Switch
    By trem in forum Theory & Design
    Replies: 1
    Last Post: 06-02-2012, 02:45 AM
  3. Looking for potentiometers, jacks and foot switch
    By Alan0354 in forum Guitar Effects
    Replies: 1
    Last Post: 05-03-2012, 11:14 AM
  4. Foot switch education please
    By trem in forum Maintenance, Troubleshooting & Repair
    Replies: 6
    Last Post: 02-04-2011, 09:25 PM
  5. 1962 Ampeg Reverberocket Restoration
    By 87camaro in forum Maintenance, Troubleshooting & Repair
    Replies: 1
    Last Post: 02-25-2008, 05:13 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •