What is the inside diameter of a rdm mast?

Enable JavaScript to get the best experience.

Create new topic

Search Subscribed Active Create new topic

> 10 years ago

General Gps & Speed Waves Foiling Gear Reviews Lost & Found WA NSW QLD SA VIC TAS

nobody

NSW

437 posts

nobody

NSW, 437 posts

8 Nov 2007 11:18pm

My sdm mast has a measured inner diameter of 48.5mm. I have a old ('80s maybe) thinner mast which measures 46mm. Is this a rdm mast? Were there any other standards for masts in the past?

TonyC

410 posts

TonyC

WA, 410 posts

8 Nov 2007 9:25pm

The inside diameter of my rdm is 33mm - think they would all be about the same.

jord070

1109 posts

jord070

WA, 1109 posts

8 Nov 2007 9:26pm

yep 33mm

nobody

NSW

437 posts

nobody

NSW, 437 posts

9 Nov 2007 12:07am

Thanks guys for the quick replies.

Therefore this 46mm mast must be some freak dinosour '80s standard. Oh well...

greenleader

QLD

5283 posts

greenleader

QLD, 5283 posts

9 Nov 2007 12:02am

windsurfer one design masts were always around 46mm as well as white hifly's and early purple rotho's and yellow sportex masts but some may have been black or even clear. (sexy)

obsolete now as they feel like sailing with a piece of bamboo. (boing, backslam)

unless you like that kinda thing?

Krusty

NSW

441 posts

Krusty

NSW, 441 posts

9 Nov 2007 11:03am

Spot on greenleader, windsurfer one design masts are a bit narrower than a sdm. This means that it is next to impossible to find an extension to fit them!! Skinny extensions are way too small and standard extensions are a couple of mm too big

. Not that I actually ever use a one design mast!!

Paul Kelf

678 posts

Paul Kelf

WA, 678 posts

9 Nov 2007 1:14pm

Originally masts must have been 46mm I/S Dia & then changed to 48mm I/S dia.
For that reason Tyronsea had to introduce a spacer and we also modified the bottom of our mast extension to accept later model stubby bases.
Therefore Tyronsea will fit both old & new masts & bases.

~~http://www.hydrodynamix.com/tyronsea.html~~

RDMs are about 32 -33mm I/S dia.

Paul

Please Register, or first...

Topics Reply