Hi do you guys think a V tail Jart made out or Epp and Coreflut Tail is a good idea

Yes, go for it! Please post pictures of the build in progress. The only licensed EPP kit made by Jack Cooper at Leading Edge Gliders has been discontinued, so presently you have no other option but to make your own. Good luck and post progress here.

cool just have o get the plans printed out and wait for the epp to arrive

Great idea. I wouldn't bother with using coreflut (colorplast, fluteboard) for the tail though. Use 1/8" balsa covered with ultracote. Very clean and quite durable. It's what is used on the NCFM Moth and has proven to work quite well. Coroflute is draggy, heavy and ugly! Good luck with your Jart. Jim

what angle should the v tail be at

Tail angle of 37 to 40 degress from verticle should be about right. I would post this question in the slope forum at RCGROUPS.com for a much broader audience to answer this question. Some of the most famous names in RC flying hang out there and are eager to help. Rcuniverse is no where near as active as RCGROUPS and I'm sure you'll have many more engineering related questions as your project progresses. Also, check out what the angle of the V-tail on the Dynflite Talon is. That should give you a very good start as the Talon flies rather well with it's V-tail arrangement. Hope this helps out. Jim

Between 100 and 110 degress, measured between the two control surfaces.