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  1. Alky6

    increase your post count here

    Nah, I had one too, I don't think I am old. Least not yet!
  2. Alky6

    EME70 Twin

    I would disagree. While the peak RPM is a convenient way to provide some type of benchmark, it doesn't tell the whole story. Just like an old school dyno that uses periodic rpm vs. torque to provide a power and torque curve, while useful, still doesn't tell the whole story. Today's dyno's, that...
  3. Alky6

    increase your post count here

    LOL! Hey that Commodore 64 was a great machine. Maybe this post is coming from a TRS-80!?!
  4. Alky6

    Epoxy...favorite mixing cups?

    You are absolutely correct. Close enough for the 5-30 minute epoxies, IMHO. With BSI, there is about an 8% difference in density. Epoxy being the heavier. Easy to compensate, but I don't think I could mix by volume in small batches to be any closer. 1:1 on volume, add 10% to the hardener to...
  5. Alky6

    Crimping Tool

    These. Work great. Have crimpers on them.
  6. Alky6

    Epoxy...favorite mixing cups?

    same with Hysol 9430.
  7. Alky6

    VVRC 40 Twin Props

    Thanks for the info!
  8. Alky6

    VVRC 40 Twin Props

    It's in an EF 78 Extra. I had about 2 gallons through the first engine before the crank twisted. VV replaced it and this one runs great. Have another 2.5 gallons through the new engine. Put a gallon through it this weekend. Setting it up for IMAC. Using a xoar 20x8 laminated - 6950-7000 on...
  9. Alky6

    VVRC 40 Twin Props

    wow! I am now rethinking my path. Thanks!
  10. Alky6

    VVRC 40 Twin Props

    Heck, didn't realize the ES composites were so light. Wonder if they make a small version (less than 2" diameter). Though that would be an expensive venture to shoe horn two of those into the tunnel in my 78" Extra!
  11. Alky6

    VVRC 40 Twin Props

    It was planebenders.
  12. Alky6

    VVRC 40 Twin Props

    U shape or Y shouldn't make much difference. The length from the exhaust to the "tee" outlet pipe and the change in volume at that point (and resulting sound wave reflections - either positive or negative) will have most to do with it. My understanding is that the tubing is 1" od so the velocity...
  13. Alky6

    VVRC 40 Twin Props

    good news! thanks for the update!!
  14. Alky6

    Air in & air out- lets keep engine's cool

    That's a great idea! -Paul
  15. Alky6

    IMAC JTEC/ Radiowave 3.1m competition series

    I had the similar experience as you with the poly glue. Haven't tried anything different, yet. The Hysol you reference with the mixing tube sounds much better. Especially on blind hole installations. Thanks for the info. -Paul
  16. Alky6

    IMAC JTEC/ Radiowave 3.1m competition series

    Thanks! I see a lot of references to Hysol, just don't know which folks are using.  In regard to the hinging, assuming gorilla glue was one you tried? If so, how did it fare? Thanks for all the updates! Looking forward to seeing the finished product!!!   Oh, fat fingered the thanks...
  17. Alky6

    IMAC JTEC/ Radiowave 3.1m competition series

    Ok, which hysol? -paul
  18. Alky6

    Prop bolts....what's the consensus?

    Vern: Well put as to why the propeller bolts would fail in shear. -Paul
  19. Alky6

    Prop bolts....what's the consensus?

    Good question, but yes it does. The yield strength of the bolt (think force/area) in psi (pounds per square inch) or more commonly dentoted as ksi, or 1,000 times psi). The big concerning factor is shear strength - and this is also why shooting for 2x the diameter as noted above - coupled with...
  20. Alky6

    IMAC JTEC/ Radiowave 3.1m competition series

    Thanks everyone for the replies and the support - will definitely be taking advantage of it when the time comes! Music to my ears on epoxy! Kevin: FWIW on the epoxy and the tow, not sure how well it will do with bonding with the foam wing cores, but, back in the day when I was building my...
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