Stewart Systems Prime Video

[@muhammadsteinberg]

Thanks for posting this. Gives some insight into the extra work that priming will bring.

[@pilottender]

Glad it was helpful! definitely a little extra work, but hopefully all worth it in the end

[@flightsimguides]

@@pilottender been a couple years, was it worth it?

[@thomasaltruda]

I got those mixing lids too! Got the idea from Andrew Atallia, who is building a -7 on KZbin.

[@pilottender]

Yea they are a great product, super easy to use and keeps the primer fresh!

[@FlyguyXII]

Fond your build on VAF and subbed to your channel. I live down in Columbus IN and I’m hoping to start an RV 8 project within the next year. This summer will be spent getting the garage organized and ready for a build. Question on your priming. Why prime over an acf50 treatment after the part is assembled? I know there are areas that you have to prime due to the type of material as well as dissimilar metals.

[@pilottender]

Great question, and welcome to the community! The prime discussion is an age old discussion in the community whether to prime or not to prime. it's totally dealers choice, you are correct that generally speaking it is not required, however it is recommended if you live in high corrosion environments, I don't currently but never know where I might end up down the road or if I sell the plane someday down the road to someone that it is important to it can help resale value. That being said, obviously it does add some weight so you just have to weigh the pros and cons for what you want out of your build.

[@TurbineJesse]

I just got this system, going to give it a try on my 7A build. Any issues or worries with the etch getting onto the outside surfaces? I presume all blue plastic should be completely off?

[@cptgordo1]

Great video, I'm looking to prime the cockpit of my RV7...Do you think the EKOPrime primer is tough enough to stand up to that kind of wear and tear?

[@pilottender]

Thanks for watching, I don't have a ton of experience with the product yet, but at the very least if you use the ekoprime I would cover it with a top coat of paint to give it a little better protection, but from what I understand (though I haven't yet used it) the ekopoly would be more suitable and durable for wear and tear in the flight deck area as well as any areas that will see chemicals, oils, etc. hope this helps.

[@davefoord1259]

Definitely use a topcoat over your eko primer in the cockpit or otherwise use epoxy primer. The ekoprime is rough as its designed to help top coat adhere so it will hold grease oil dirt well too😢

[@lonzomclaughlin8325]

Looks like you sprayed the small parts and then flipped them over. Did you let them dry in between flipping them? With that gun system we’re your able to store it while parts dried or did you need to cleanup and then remix and reload? I’m trying fir the first time soon.

[@pilottender]

yes, I let them dry about 45 minutes to an hour, I just made small batches of the primer so what little I had left I just threw away and started fresh. since this video, I rigged up a rolling coat rack from Menards that I attach the smaller pieces to with some safety wire and it allows me to get both sides at one time.

[@roarksummerford7426]

Hey, I remember I found this video from your build thread on VAF I dont remember which one it was! I'm doing an RV8 also "RV8-83772, N1986 build thread". I got EkoPrime also but havent sprayed it yet. What kind of air filtration did you use?

[@pilottender]

Sorry for the late reply, hope this helps. Air compressor Filtration - I used a THB Air Filter/Regulator and Air Clean/Dryer Part no. FR-FLM863. www.thb.com.tw/filter-regulator-with-coalescing-filter-fr-flm863-filter-regulator-set.html as far as shop filtration - I don't have a good set up yet, I just spray in the garage and open the door to get some air circulation and use a 3M paint respirator mask while spraying.

[@danielweberdlc]

What gun air settings are you using? What size and flow capacity does your compressor have? Good video.... thinking of going with the Stewart system as well.

[@pilottender]

Daniel, I have a 60 gallon compressor from Harbor Freight. I am running 90psi out of the compressor to the gun to ensure ample air is available, but then at the spray gun I have a second regulator that is limiting the air to 18psi. I have been very happy with the Stewart Systems so far, however, one thing worth mentioning is that you will not want to use the 1 part primer for the whole aircraft because it is not very resistant to abrasive chemicals. Areas such as the firewall forward and anywhere else with regular exposure to fuel/oil etc you will want to use a 2 part primer to ensure the primer stands up to test of time against those harsh chemicals.

[@danielweberdlc]

@@pilottender Yeah, I'm kind of worried about air flow rates - my compressor is 20 gallon, but only 120V, so maybe 6 CFM. I'm hoping it will be ok to prime in smaller batches, maybe if I get a second air tank. How scratch resistant is the primer?

[@MilitaryAIWorks100]

@@pilottender Sean no sort of paint booth?? Are you getting much overspray in your shop?? Also what sort of dry times are you seeing??

[@pilottender]

@@MilitaryAIWorks100 No, I do not have any sort of paint booth but don't find that I have a ton of overspray (but there is some). I have a plan to create a miniature spray room, I just haven't gotten around to it yet. As far as dry times, it varies slightly with temperature, I generally allow 30 min between the first and second coat and then about 12 hours before spraying the other side of difficult parts, then I usually let it set for 4 days while I'm on a trip for work. I'm sure it would be workable much sooner I just tend to plan the spraying before a trip so it has ample dry time before I begin final assembly and riveting.