Gong:
Mast:
Hi Jeremy,
I’m not sure because I notice it after foiling - either in the event of a fall or when lifting in or out 
Mike
Hi Robert,
great - why can the dimensions not be uniform 
makes it not easier for us.
Mike
Time will tell I guess but I’ve suspended it between 2 timber blocks and stood on it and no deformation
Hi Mike,
This is all about mast plates ? How is the mast profile itself on all these models ? I mean is it different ? I’d rather want to test a DIY route for the mast too.
Hi Souleiman,
you are right - the mast are also very different and almost only fit to the mast plate of the same manufacturer - in addition the profiles change from year to year.
And besides, you can’t get STEP from the manufacturers - so you have to measure and draw yourself.
I will add the mast profiles soon.
1 Like
Most likely a fall where you hit the board. It tends to put a lot of pressure and create a folding point.
Does sbdy has the Axis plate specs ?
For compatibility purpose, IMHO there is also the mast chord/mast thickness data that are important. Strangely, the 90 x 165ish not so much as most of the times, holes can be modified in alu plates to gain a few mm to fit the board hole pattern. Second point, with US rails, the longer plate dimension (+/- 165mm) data is irrelevant since you have a sliding plate.
So in mm, chord length / profile thickness / Nb screws -diam- screw spacing
Please everybody confirm:
Axis: 119 / 18.85 / 2xM8 60mm apart
Airush: should be like Gong (to be confirmed)
Gong: 109.5 / 14.7 / 3xM6 40mm apart
Mantafoils: ? / ? / 2xM8 40mm apart (should be the same as Zeeko)
Naish: 110 / 14.7 then 15.3 / 3xM6 40mm apart ________==== Beware: Gong compatible in 2018 not from 2019 (15.3mm)
RL: 115 / 15 / 2xM8 60mm apart
RRD: should be Gong compatible
Slingshot: 114 / ? / 2xM8 51mm apart
Takuma: 109.5 / 14.9 / 3xM6 40mm apart (Gong press fit compatible)
Zeeko: Mantafoils: ? / ? / 2xM8 40mm apart (should be the same as Mantafoils)
ZJ sport from Ali:
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So they are still testing mast profiles from year to year ? I thought they would stick to a proven one…
Also, I thought they all were using a few profiles models for the mast. Been searching for this topic but couldn’t find any profile reference related to NACA…
Thx 
Fanatic has changed and also Indiana - hope others will keep it as it is 
I added the mast profiles to the first post…
Mike
Thank you Mike ! Would be easier for everybody to find all info regarding mast & plate on the same thread 
So, I did a few research, and just like I thought, they basically all use the same NACA profile. Here they are :
NACA0010 :
NACA0012 :
Sauce :
Was happy to do it - that’s the reason I put it in the first post
I think in terms of efficiency the mast profile is not really decisive - the stability and the space for the cables is more important for us.
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Do you have the 3D drawing or drawn 2d profile of the slingshot mast ? I need it for my mast clamp. Would be appreciated
Hi, I have had a few people come to me to purchase my Windknife FF13 and I was wondering what I could do to help this community. This post seems like the right place to start. What would you like from a mast plate, is there a standard size and hole spacing you need?
Cheers
Gareth
2 Likes
Someone mentioned that they wanted a way of adding threads to the FF13 mast, I usually do that using cross dowels.
2 Likes
If you are not sure what a cross dowel is here is a picture
1 Like
Hi Garteh,
Welcome and nice to see you here ! I posted your like above
TBH, this profile looks a bit fragile. Is there a way to add some more material ? Like the slingshot mast for exemple ?
Do you offer custom order ? If I wanted a 13 cm chord profile with 3mm thick wall in place of standard 2mm for exemple ?
Love your work 
This foil does not look strong enough to me.
Thankyou @Foxyirish1987 you are way ahead of me!!
The extrusion is deliberately designed to be lightweight with features designed to enable simple reinforcement with the addition of bonded in tubes or cylinders.
Does anyone know how strong it needs to be, what kind of load it needs to carry? I am guessing you are really after stiffness more than strength. As I would guess flexing becomes a problem before buckling or failure,
I can certainly look into custom parts is there was sufficient demand.
