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  1. CatalinaWOW

    Topics and a build thread for the new guys

    Balancing and flight tuning as a final subject for your series.
  2. CatalinaWOW

    Getting started in Giant Scale RC---Tools and Supplies

    The schoolhouse seems to be missing from the new version of the site, so it is hard to comment on missing tools. One that comes to mind is a digital volt-ohmmeter. You can get one free with a coupon from HF that is more than adequate. Monitor batteries, find bad wires and switches - they have...
  3. CatalinaWOW

    **sticky** Walbro service and tuning manual

    I've got manuals for HDA, WB and WT series carbs if they are of interest. They were too large to use the upload file button.
  4. CatalinaWOW

    GSN Grand Re-opening

    Out of town helping some relatives finish a remodel. Came back and found a wonderful lightning fast site. Great work by the dynamic duo. Hope there is some sleep time for both of you now.
  5. CatalinaWOW

    Prop Bolt Torque

    While the formula above doesn't dial in an exact torque, you may use it to feel better about sheering bolts.   Your DA 120 bolts have a pitch diameter of about 0.19 in.  The friction factor can vary from about 0.15 up to about 0.85, but most sources will tell you that it is typically from...
  6. CatalinaWOW

    Prop Bolt Torque

    All this is absolutely true, but doesn't tell you much.  The required force is one key, and there is really no way for most of us to know that.  The thrust loads on these bolts are negligible.  Dominant loads are probably vibration and unbalance loads.  Desired load is probably what is required...
  7. CatalinaWOW

    What's Sleepy doing - 10/28

    Love what you are doing, but leave some time for yourself and family.  Bills are important but so are they.  This site is already workable, and just needs time to get the rich history that other sites have.  Haven't been able to quit the other one cold turkey, but it is clear that they are going...
  8. CatalinaWOW

    FAA CLARIFICATIONS...... What's legal.......What aint ???????

    Like I said, unpredictable and slow.  It takes a while to find who the bidders are and who has the most money.  Often there is a last minute dark horse.  Also, it is hard to figure which money flows matter.  Does the advertising revenue of the networks which depends on fearmongering trump the...
  9. CatalinaWOW

    FAA CLARIFICATIONS...... What's legal.......What aint ???????

    I forgot to mention that congressmen, lobbyists and bureaucrats are also involved, so the eventual outcome is both far away and unpredictable.
  10. CatalinaWOW

    FAA CLARIFICATIONS...... What's legal.......What aint ???????

    As has been stated before, no one knows what the rules will be, and there is lack of clarity on what they are now.  Lawyers and judges are involved which means the situation is completely unpredictable.  For your situation with the field owner I would be very open, explaining the fact that...
  11. CatalinaWOW

    Anyone ever see a DA like this ?

    Thanks for the new softer tone on whether these are "stolen".  It's fine that DA won't service these, but when the owner of these engines (US Government) decides to sell or give them away they aren't stolen.  DA may even have a contract that says they are to be destroyed, not sold or given...
  12. CatalinaWOW

    **sticky** Understanding Lithium Polymer Batteries

    Sounds like a battery issue.  I have some that are rated 15C, but show extreme voltage drops at rates over 5-7 C.  That is not all bad.  Those batteries are now over 7 years old.  I bought 4 at a bargain price, one died in a crash in my sons plane and one died of heat death from an...
  13. CatalinaWOW

    **sticky** Understanding Lithium Polymer Batteries

    All good stuff.  Another thing to think about is that the discharge rating (C) is very differently (and sometimes creatively) applied by various vendors.  Some will give the highest rate that won't damage the battery.  Others give the highest rate that won't drop the output voltage below 3.3...
  14. CatalinaWOW

    Another Sleepy follower

    Liked the other site, and will visit the archives from time to time.  Stuff that can't be replicated here like Pe Reiver's posts or Mode1's, but will be visiting much less often. Two reasons.  First, not much going on there.  Second, don't like the way things are handled.  Don't know what...
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