Author Topic: Tap and die set for 1952 GF Plunger  (Read 1194 times)

Offline Chillipepper

  • Moving Up
  • **
  • Join Date: Dec 2011
  • Posts: 13
  • Karma: 0
Tap and die set for 1952 GF Plunger
« on: 17.03. 2016 11:55 »
Hi all

I am after a tap and die set for the above (engine and frame) any recommendations

Cheers

Telford, Shropshire, UK
1952 BSA A10 Gold Flash Plunger
1978 Triumph T140

Online bsa-bill

  • Wise & Enlightened
  • *
  • Join Date: Mar 2006
  • Posts: 5715
  • Karma: 66
Re: Tap and die set for 1952 GF Plunger
« Reply #1 on: 17.03. 2016 12:30 »
http://www.tracytools.com/

are worth a look I've bought stuff from them that seems ok

as your looking at Whitworth and cycle threads, might save yourself a bundle buy just buying the ones you need rather than sets, sorry I'm not familiar with Plunger models although I suspect will be much the same as swinging arm. I'd think someone here will know just what are the common sizes you need
All the best - Bill
1961 Flash - stock, reliable, steady, fantastic for shopping
1959 Rocket Gold Flash - blinged and tarted up  would have seizure if taken to  Tesco

Offline duTch

  • Ricketty Rocketty Golden Flashback
  • Wise & Enlightened
  • *
  • Join Date: Oct 2011
  • Posts: 4538
  • Karma: 41
Re: Tap and die set for 1952 GF Plunger
« Reply #2 on: 17.03. 2016 13:02 »

 yes RHCP, what Bill said, you really only need a few for frame and engine/g'box;  5/16" in BSC & BSW. On the Plunger, the only threads in frame I can think of easily are the seat pivot grease nipple 1/4"BSC, & (spring) mounts and steering damper/lock-lock (5/16" BSC). Engine/ gearbox castings use some same plus some 3/8"& 7/16" in , plates and through bolts/studs mostly 5/16 -3/8-7/16 BSC.
 That's the easy bit

   Tank bits and electrical bits use some BA and some BSF but not much......confused yet *conf* *????*
Started building in about 1977/8 a on average '52 A10 -built from bits 'n pieces never resto intended -maybe 'personalised'
Have a '74 850T Moto Guzzi since '92-best thing I ever bought doesn't need a kickstart 'cos it bump starts sooooooooo(mostly) easy
Australia

Offline rocker21

  • A's Good Friend
  • ***
  • Join Date: Jun 2011
  • Posts: 112
  • Karma: 2
Re: Tap and die set for 1952 GF Plunger
« Reply #3 on: 17.03. 2016 15:16 »
all studs that go into alloy castings are BSW everything else is BSC which is 26tpi till you get to 1/2 inch which can be either 26 tpi or 20 tpi , have a look at some of the better bike jumbles like kempton where you can buy slightly used stuff in good nick for sensible money , beware of bodger using a metric fine bolt which is a 1mm pitch and is very close to 26tpi and can be forced to fit!!! seen a few of those and is a right pain to fix
1960 A7SS


Offline morris

  • Wise & Enlightened
  • *
  • Join Date: Aug 2012
  • Posts: 1689
  • Karma: 26
  • Antwerp, Belgium
Re: Tap and die set for 1952 GF Plunger
« Reply #5 on: 17.03. 2016 19:50 »
Good address also is;
http://www.rdgtools.co.uk/
They have left hand taps and dies which you may need if the left footrest stud and/or nut are butchered.
Some stuff I got from Chronos which is also good quality;
 http://www.chronos.ltd.uk/

I ordered what I needed as I got along through the restoration. Allowed me to buy somewhat better quality without hurting my wallet to much.
As duTch mentioned you'll need WW for the engine, 3/4 X 20TPI for the cush drive and BSC for most frame bolts. You'll also need some BSF for the cylinder head. If my memory serves me well, it's 5/16 for the rocker box bolts, and 3/8 for the head bolts
'58 BSA A 10 SA
'52 BSA A 10 Plunger
'55 MORRIS ISIS
The world looks better from a motorbike
Belgium

Offline duTch

  • Ricketty Rocketty Golden Flashback
  • Wise & Enlightened
  • *
  • Join Date: Oct 2011
  • Posts: 4538
  • Karma: 41
Re: Tap and die set for 1952 GF Plunger
« Reply #6 on: 17.03. 2016 21:09 »

 
Quote
They have left hand taps and dies which you may need if the left footrest stud and/or nut are butchered.

 That's the one I undo most often, just the other day in fact; How could I forget thatone *bash*
Started building in about 1977/8 a on average '52 A10 -built from bits 'n pieces never resto intended -maybe 'personalised'
Have a '74 850T Moto Guzzi since '92-best thing I ever bought doesn't need a kickstart 'cos it bump starts sooooooooo(mostly) easy
Australia

Offline morris

  • Wise & Enlightened
  • *
  • Join Date: Aug 2012
  • Posts: 1689
  • Karma: 26
  • Antwerp, Belgium
Re: Tap and die set for 1952 GF Plunger
« Reply #7 on: 17.03. 2016 21:56 »
That's the one I undo most often, just the other day in fact; How could I forget thatone *bash*
Don't be to hard on yourself duTch. We're all getting older *smile*
'58 BSA A 10 SA
'52 BSA A 10 Plunger
'55 MORRIS ISIS
The world looks better from a motorbike
Belgium

Offline terryg

  • Resident Legend
  • *****
  • Join Date: Nov 2012
  • Posts: 501
  • Karma: 6
    • thecarshipenterprise
Re: Tap and die set for 1952 GF Plunger
« Reply #8 on: 18.03. 2016 08:30 »
I've had a Tracy Tools supplied 26 tpi tap and die set for many years and added other single items as required. It's worked fine for me.

I bought the 26 tpi set before TT moved out of Isleworth. As I said - many years.
Terry
'57 'SR', '59 SR, '63 RGS

Offline duTch

  • Ricketty Rocketty Golden Flashback
  • Wise & Enlightened
  • *
  • Join Date: Oct 2011
  • Posts: 4538
  • Karma: 41
Re: Tap and die set for 1952 GF Plunger
« Reply #9 on: 18.03. 2016 09:35 »
 
Quote
I've had a Tracy Tools supplied 26 tpi tap and die set for many years

I don't wanna split hairs, but someone has to; Is it 26 tpi BSC or BSF  *????* 
Started building in about 1977/8 a on average '52 A10 -built from bits 'n pieces never resto intended -maybe 'personalised'
Have a '74 850T Moto Guzzi since '92-best thing I ever bought doesn't need a kickstart 'cos it bump starts sooooooooo(mostly) easy
Australia

Online chaterlea25

  • Wise & Enlightened
  • *
  • Join Date: Jun 2009
  • Posts: 3584
  • Karma: 50
Re: Tap and die set for 1952 GF Plunger
« Reply #10 on: 18.03. 2016 20:55 »
Hi dutch,
Quote
I don't wanna split hairs, but someone has to; Is it 26 tpi BSC or BSF

The 1/4in size in BSC and BSF are both 26tpi, there are detail differences in the thread form
othere than that BSC and BSF are different (to the best of my knoowledge

Spend a week studying this and report back  ;)

http://www.gewinde-normen.de/en/index.html

John
1961 Super Rocket
1963 RGS (ongoing)

Offline duTch

  • Ricketty Rocketty Golden Flashback
  • Wise & Enlightened
  • *
  • Join Date: Oct 2011
  • Posts: 4538
  • Karma: 41
Re: Tap and die set for 1952 GF Plunger
« Reply #11 on: 18.03. 2016 21:59 »
Quote
Spend a week studying this and report back  ;)

 NO.   *eek*

 Yes the threadform was what I meant. Not that I haven't ignored that at all, oh no. But was only more recently I learned the difference, and earlier, BSC taps and dies were not available to me. *spider*
Started building in about 1977/8 a on average '52 A10 -built from bits 'n pieces never resto intended -maybe 'personalised'
Have a '74 850T Moto Guzzi since '92-best thing I ever bought doesn't need a kickstart 'cos it bump starts sooooooooo(mostly) easy
Australia

Online groily

  • Wise & Enlightened
  • *
  • Join Date: Jul 2007
  • Posts: 1315
  • Karma: 24
    • www.brightsparkmagnetos.com
Re: Tap and die set for 1952 GF Plunger
« Reply #12 on: 18.03. 2016 23:10 »
In simple terms, the biggest difference in form is the included angle on the various threads, with the 'whitworth' angle - for all BSW and BSF - being 55°.
BSC is 60°, so are UNC and UNF, and most if not all metric, while BA is 47.5°.
There are differences in roots and crests and stuff which the long read referenced and other similarly scholarly sites explain in horrible detail, along with the important stuff like 'how many threads to the inch' (or  millimetre equivalent) for a given size.
Some series overlap on the pitch/threads per inch, like M6 and 0BA at 1mm, or 1/4 Cycle and BSF at 26 tpi, and a few UNC and BSW sizes share their tpi.
But for a '50s beesa it's going to be mostly BSC, a bit of BSF, some BA for the electrical side and maybe (trying to think of something) BSW. Except where POs have decided on something else  . . . which they often might have. Plumbing sizes for fuel taps and unions - BSP (whose sizings are done on the bore of what is to be screwed into them, so they sound far smaller than they are).
I'm with Terryg - Tracy Tools for the basics and add when required. Decent enough quality, fair prices, rapid service, I have always found, and a huge range.
Bill

Offline BSA_54A10

  • Wise & Enlightened
  • *
  • Join Date: May 2008
  • Posts: 2162
  • Karma: 34
    • BSA National
Re: Tap and die set for 1952 GF Plunger
« Reply #13 on: 19.03. 2016 12:27 »
It goes like this as previously stated the difference is the angle between the threads and this is important as when a narroe angle and a wider angle thread form have the same numbers of threads per inch, the narrower one is cut a lot deeper so while 1/4 Brass , CEI , BSF, & conduit all have the same number of threads, some are deeper than others.
So shoving a BSF bolt into a CEI hole makes the thread deeper so when you screw a CEI bolt bolt back in latter on it will be loose and either pull out , strip the remaining thread out of the hole or simply just vibrate loose & fall out.
This is hard for most to visualise so try cutting a sheet of paper with a series of 47.5  , 55 & 60 degree Vs.
Then place one set into the other and you will see that to fit, the softer material has to get deformed.
I did an bit about it for the Banter years ago.
BSF & BSW both have the same thread angle but if you look at 2 of them that are the same size you will see the fine thread is less than 1/2 the depth of the coarse thread.

Finally if you are going to be working on Pommie bikes you will be better served by purchasing individual sizes.
Generally individual sized sets of taps ( Tapper, inter & plug) will be of better material than a 40 piece set.
Also individual dies are generally split type so you can make the thread a bit tighter to compenste for past butchery.
Somewhere in the UK or USA parts books ( not the multi language general export editions ) is a table of standard sized bots used on your bike.
These are the sizes you will need.
Bike Beesa
Trevor

Offline duTch

  • Ricketty Rocketty Golden Flashback
  • Wise & Enlightened
  • *
  • Join Date: Oct 2011
  • Posts: 4538
  • Karma: 41
Re: Tap and die set for 1952 GF Plunger
« Reply #14 on: 19.03. 2016 13:14 »

 
Quote
all studs that go into alloy castings are BSW

 Actually, correct me if I'm wrong as I have a variety of screws in the inspection covers of the various spare gearboxes I have, but I reckon most are BSC. These are ones that I (erroneously? 'as above') used Unbrako BSF socket cap screws in many years ago*shh*.

 When I go to buy Whitworth bolts/nuts from a bolt shop (getting few and far between around here), generally I end up with what must be UNC, as the hex is the wrong size. I try and double check with the guys, but they don't always (usually don't) know the difference.

 So when buying 'Whitworth' Socket cap screws, do we buy WW or UNC ??

Started building in about 1977/8 a on average '52 A10 -built from bits 'n pieces never resto intended -maybe 'personalised'
Have a '74 850T Moto Guzzi since '92-best thing I ever bought doesn't need a kickstart 'cos it bump starts sooooooooo(mostly) easy
Australia