I finally bought some vortex generators. I got them from Landshorter. He had them on eBay and I won them for $90. We'll see if this is a get what you pay for type of situation or not.
When I contacted them before bidding, they said that RV-4 templates are available. However, after I won them I was sent a generic template with intstructions on how to locate them on any airplane. The instructions are plenty clear though. So if you're considering them just be aware of that.
I'm going to document installation and my observations of what these do for my RV-4 in this thread. So first things first. In the installation instructions it says they need to be installed at the location which is 10% of the chord of your wing. What I would like to know from anyone here is if they have determined this already. Ideally I'd like to know a distance from the butt joint on the top of the wing between the leading edge skin and the top skins. I'm going to go measure and find it for myself, I'd just like to see someone else's numbers to make sure I'm in the ballpark.
When I contacted them before bidding, they said that RV-4 templates are available. However, after I won them I was sent a generic template with intstructions on how to locate them on any airplane. The instructions are plenty clear though. So if you're considering them just be aware of that.
I'm going to document installation and my observations of what these do for my RV-4 in this thread. So first things first. In the installation instructions it says they need to be installed at the location which is 10% of the chord of your wing. What I would like to know from anyone here is if they have determined this already. Ideally I'd like to know a distance from the butt joint on the top of the wing between the leading edge skin and the top skins. I'm going to go measure and find it for myself, I'd just like to see someone else's numbers to make sure I'm in the ballpark.