Hi Kurtis,
I just ordered a Cedrus Efoil integrated at 82cm and an assist the is 80/17 cm. Thes are the aluminum forged mast design as I understand it. Not sure if first run is a limited or not but go to Cedrus site and check it out. stuff looks super good!
I just ordered two last week. One 82 Efoil (for the no wind days) and one at 80/17. I think they have 3 available in assist design. 78/15, 80/17, and 82 /19. Excited to get this toy along with fusion foil drive!
Yep ordered the 80/17 myself! Excited too once it arrives!
Now that Code have (finally) released their integrated mast as well, another quality of life thing I did not realize all the integrated masts seem to have is an extra set of attachment screw holes to affix the mast to the foil drive unit. Especially helpful I would think for a trench board user to keep mast/foildrive attached to one another when accessing the battery.
As for pod height, my impression is James Casey seems to lean toward suggesting the 17 over the 11 and Josh Ku suggests the 11 over the 17..
Remember to take your mast off regularly as when bolted to the battery box, you’ll get corrosion…
11” non trench board, though I think JK can pull that off with the RCS! Need some glassy conditions for sure.
My only complaint besides price, is the 78” length which I believe is measured as top at screws to bottom of plate. So it’s a true 75? Wish they had just used the 80. Must be a lot of shallow reefs in OZ!
A layer of lanolin grease between the mast and base unit seals the area stops any corrosion.
What if I already have corrosion? Is there something else to re-seal?
There are 2 ways to remove corrosion from aluminium, mechanical or chemical, neither result in returning the surface to its new look.
Mechanical means grinding away the corrosion products, the white stuff, until only clean shinny alloy is showing.
Chemical, is using an acid, usually phosphoric acid to disolve the corrosion products, leaving clean shinny alloy.
Any corrosion products left behind will continue to eat the alloy surface so all must be removed for a permanent repair. Once you have a clean surface, epoxy primer and polyurethane paint can seal the surface. You can’t re-anodise the surface, this is done in a bath and requires complete disassembly. There are liquid anodising solutions but these aren’t readily available to the public.
If all this sounds too hard, a good clean and application of a penetrating fluid, ACF50 or Corrosion X can really slow down the progress or even halt the progress of the corrosion. Then a bed of lanolin grease when fitting the mast will seal out salt water.
I’m an aircraft structural repair technician specialising in corrosion repairs to aircraft alloy structures.
I’m looking for thoughts about performance when comparing the Cedrus Forged Aluminum Integrated mast with High Modulus Carbon integrated Masts. Specifically riding and pumping. Keeping price out of the equation. I realize these products are very new, with not much time or opportunity to do an in-depth comparison. Any and all input appreciated.
Aluminum is far more robust to impact abuse (nicks, dings etc) than carbon. Carbon will win but barely in certain types of stiffness, however, get in turbulence like prop wash and you have multi-directional torsion. Carbon is typically very directional. So if you take care of your UHM and don’t drop or ding or put it in situation that say the foil oscillates abnormally UHM is stiffer and lighter by a small margin.
But…..you cannot skip price. It’s about $650 or $700 vs over $2,500. You want a corvette or a Ferrari, they both do 200 mph. Also any UHM is not universal and cannot be used with other manufacturers foils.
Just some thought
if you need buckets of engineering detail take a peak at Cedrus news and blogs. Incredible engineering detail on why they do what they do.
I own the aluminum forged. I have ordered the integrated for my foil drive. I use it with slingshot phantasm and sabfoil leviathan (1750 for pump) it’s plenty stiff and tour and universal!
Thanks for the reply