I have done my Dyna in all aluminium bodywork, and am thinking of a brushed finish.

My concern is that aluminium starts to oxodize instantly and will get worse with time.
Alloy is unknown.
I live inland so zero chance of salt air.

Is there a flat denim style clear coat?
Paint is difficult to get to stick to aluminium, and I have always used an etching primer
How to get a clear coat to stick?

I have had clear powdercoat turn yellow over time

Anodize?

How did HD do the aluminium on the early V-rod?

 

Wow! I would like to see a pic of your bike in all aluminum.

I know they make satin clear coat, and lot of car wheel/rims are aluminum with a clear coat:

https://www.clearcoating.com/product...FZS6wAod5JoPow

I know some powder coats are photo sensitive and some are not, I think technology is catching up regarding the yellowing.

I would talk with a good well established paint shop, and the same with a powder coater to see what they suggest. I have shot regular automotive urethane clear over brushed aluminum without any adhesion issue.

Personally, I would consider leaving it raw and use a good wax. A regular cleaning routine with wax will keep the raw aluminum looking good. Take a look at some of the vintage BSA motorcycle tanks (as an example). Some models are aluminum and pretty sure the finish is just polished. YD

 

It is still in the mock up stage and some bits are missing as you can see but this will give you an idea

 

That is a good looking machine! I would also talk to a paint shop about a high quality sati . Wax/sealer would work too, but you would spent a lot of time cleaning, especially around your swing arm.

 

I used an original Superglide boat tail as a mould for the back half of the fibreglass tail piece, but now thinking to use it as a buck to do it all in aluminium. Same buck thoughts re the fiber chin spoiler, which I had to make larger to hide the Tru-Track chassis stabiliser

Tried Shine Seal on the swingarm yesterday, and may try it on the brushed aluminium but I understand it only is good for 2 years, and I do not need another chore.

 

I love the look!! That bike looks great!!

Thing long and hard about putting a coating on it. A clear coat will eventually create a maintenance issue with chipping, then stripping it all to reapply etc.

I say leave it raw like it is and just use a buff and wax every now and then. Maybe check out an airstream camper or airplane forum on how to care for raw aluminum. I figure those guys will know to how to clean, polish, and keep it clean with oxidization at a minimum. YD