Discussed in these Forum posts:

Twinser conversion - Fin box measurement
Hey,

I am in the process of converting an older single into a twin fin.

Just looking for some data out there, distance between the fin boxes (center to center), distance from the tail.

My board is very similar, dimension wise (at 300mm, 2000mm, volume, width, length, etc...) to the Patrick Diethlem Wide Trailer Wave 85L. I would be interested to get the measurement of the fn boxes on that one. They seem quite far appart, like 200mm for the twin boxes which is more than the "rule" about 140mm appart I heard...

Anyways, any input, data would be greatly appreciated!

Cheers
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MFC SQ 400 custom Quad fins - Red and White 2012/3
Check these out - arrived today and look sick - even if they are in a home job quad.

Soon to be tested - if we get any wind








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104 Fanatic Freewave quad
What to do with a Fanatic freewave 104 when you got no wind and some epoxy in the shed

Could be a pig or it might work. Waiting for the new custom MFC quad set to arrive from MAui - come on winter northerlies


Marked up








Ready for some fine putty and paint and power box fill (removable)

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New QS 400 MFC Customs

Adelaide
SA

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Or... let us know if a problem, so we can tweak! 😅