CubCrafters Ventral fin install

[GreggG]

Does anybody have any documentation or knowledge on how the ventral fin on the EX-3 is installed? Engineering drawing? Pictures? Ideally I would like to weld a tab on before cover. That area gets a lot of spray.

Thanks,
Gregg

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[Mark Albery]

It's in the EX dropbox folder under miscellaneous and Float Installation.pdf.
I presume it won't have changed for the EX3.

[GreggG]

Are you able to send me the Dropbox link for the EX? I only have the EX3 link and there isn’t a float manual in the misc. section.

Thanks,
Gregg

[Mark Albery]

I'll email you the PDF. I understand CC are not keen on sharing their dropbox links. Though I expect they would respond to your personal request.

[GreggG]

Great. gregg dot guider at gmail. Thanks! I tried my old EX1 link and it didn’t work.

[Pete D]

No welding required, the ventral brackets are designed to bolt in to a covered airplane.

[David H]

Pete,

Is this fin needed on an EX2?

I am planning for floats this fall and have seen CC cubs on floats with and without this ventral fin.
I plan on Clamar 2180 amphibs, I am 1865lb EX2

Thank you,

David

[Pete D]

Double check the drawing package but I believe yes, the Claymar installation would require a ventral. There is different size/slightly different shape ventrals for CC11/Bauman, CC18/Wipline, CC19/wipline and the Claymar installations on EX/FX but the bracket installation is very similar and shares some parts between all of them.

[GreggG]

No welding required, the ventral brackets are designed to bolt in to a covered airplane.

From this drawing it looks like you need at least an Adel clamp installed before cover. I was hoping to weld tabs like I did with the water rudder pulley attach points. Does the ventral fin interfere with the inspection panel?
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[GreggG]

I ended up adding a tab to attach the forward bracket of my ventral fin to. I didn’t like the idea of cutting the fabric or having an adel clamp in a high abrasion area. Here is the result after green epoxy primer and rattle can black.
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