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PostPosted: Thu Oct 24, 2019 6:02 am 
Dirt Disciple

Joined: Sat Jun 25, 2016 10:00 pm
Posts: 13
Location: Sweden
looking for the original baseplate for the Ringle Slamma Jamma headset. Maybe someone has it in the scrap box?

Thanks.

P.S. i borrowed someone's picture from this forum. If the owner wishes, i will of course remove it.


Attachments:
Slamma1.jpg
Slamma1.jpg [ 155.11 KiB | Viewed 200 times ]
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 Post subject: Re:
PostPosted: Fri Oct 25, 2019 12:26 pm 
Old School Hero

Joined: Fri Dec 22, 2017 3:50 am
Posts: 158
Danson67 is your man (!)
This awesome dude made these for me in UK and has some more if you need them, 1-1/4 or 1-1.8.
;)
I don't know if he always answers here.

*if not send me a PM


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PostPosted: Fri Oct 25, 2019 1:33 pm 
retrobike rider
retrobike rider
User avatar

Joined: Tue Jan 29, 2008 11:04 pm
Posts: 2430
Location: A wretched hive of scum and villainy...
Hello there,

Yes, I made a batch of 1-1/8" Slamma Jamma crown races in stainless steel.

If that's the right size, yours for £18.50 each + postage.
Attachment:
Crown Races.jpg
Crown Races.jpg [ 77.27 KiB | Viewed 159 times ]

Should fit any other 1-1/8 fancy sealed bearing headsets of the period, too, if anyone else is interested in seeing if they will fit.

All the best,


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 Post subject: Re:
PostPosted: Sun Oct 27, 2019 11:37 pm 
Retro Guru

Joined: Sun Apr 25, 2010 10:07 pm
Posts: 2079
They look the biz,can you mill some adapters for pre 2000 I.S. forks so standard I.S. calipers can be used?Im sure theres a few of Z1/Z2 owners on here that would appreciate it,our only options currently are super rare scabby old Formulas or Hopes.


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 Post subject: Re:
PostPosted: Sun Oct 27, 2019 11:48 pm 
retrobike rider
retrobike rider
User avatar

Joined: Tue Jan 29, 2008 11:04 pm
Posts: 2430
Location: A wretched hive of scum and villainy...
Sure...can be done easily enough.
Could go to ISO 2000, or straight to post mount for more modern brakes.

Do you have a fork to be measured up, or the original Marz spec?

All the best,


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 Post subject: Re:
PostPosted: Mon Oct 28, 2019 1:05 am 
Retro Guru

Joined: Sun Apr 25, 2010 10:07 pm
Posts: 2079
Stooopid 48.55mm :evil: older IS to the now standard 51mm mount.


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PostPosted: Mon Oct 28, 2019 3:17 pm 
retrobike rider
retrobike rider
User avatar

Joined: Tue Jan 29, 2008 11:04 pm
Posts: 2430
Location: A wretched hive of scum and villainy...
That'll be the Formula standard, not ISO1999, then.

Formula Standard used 4mm bolts on 49mm centres, ISO1999 ran 6mm bolts on 51mm centre.
Both these had the inside face in-line with the internal face of the dropout, like the rear ISO2000 has.
ISO2000 front has a 4mm offset outboard.
(and we moan about modern BB and headset standards...)

John (B3) and Chris (Rampage) have both made Formula to ISO2000 apters over the years.
Here's the thread from back in 2010:
http://www.retrobike.co.uk/forum/viewto ... p;start=20

They might still have the files and drawings.
Worth a PM.

All the best,


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