SEN 1733

SEN 1733- Table of Contents

  1. Gummi on FB
  2. NFFS Hof
  3. Bill Booth Snr
  4. Remembering Jon
  5. Wow
  6. Jon Davis
  7. Jon's sense of Humor

Gummi on FB

Ross Jahnke
New crowd sourced question: I need to buy a new box of rubber. I've been a 1/8" guy since tan was invented
but I know many of you are using 1/16".

Please state you preference and the logic/science/theory/urban legend behind your choice.

    Tony Mathews Ross, I've switched to 1/16" from 1/8" a while ago. Quick comment, I might go to 3/32" though....

    Tony Mathews Basically, when you make up rubber motors for F1B, you want to try and get motors that are the same length and cross section so that you get the same number of turns. But the rubber will often vary a bit in thickness from splice segment to splice segment. With 1/8" rubber you can only change by 2 strands up or down (1 loop more or less) which can often give you a motor that is either too long (too many turns) or too short (too few turns). 1/16" allows you to get the equivalent of 1 strand of 1/8" variance up or down. This makes it much easier to get the right length motor. for me, there is no other reason why I would use 1/16" rubber. I have seen no improvement in energy for example although some people may claim otherwise. In fact, 1/16" rubber is a pain in the ass! It takes almost twice as much time to make up the motors as it does with 1/8".
    Tony Mathews My flying buddy Ladi Horak prefers 1/8" rubber just for this reason. So his trick is to make up a motor from the begiining of a splice segment, and check it's max turn to see if an even number of strands will get him what he wants. If he cannot get a motor that he likes and needs an odd number of strands, he removes the equivalent of 1/2 loop of 1/8" and adds a loop of 1/16" rubber and remakes the motor with this hybrid of 1/8" and 1/16". The end result is the same as if he was using 1/16" all throughout. So you would need some 1/16" with this scheme. So I do have some 3/32" (which Charlie is now making available again) which seems to be a good compromise between 1/8" ans 1/16" for ease of making up AND for "adjustability".
    Tony Mathews With the 1/8" rubber modified with a loop of 1/16" you don't want to cut up 30 gram pieces in advance. You have to test the first one, then adjust the weight to account for the 1/16" loop, then make up the motors from that splice segment. Note, after each splice you need to check the motor lengths/strands again. It can often vary.
    Tiffaney O'Dell I find 1/16 is easier to wind. Also, it holds together better after breaking a strand. It's more forgiving. It is hell to work with though, not so much for coupe, but for Wakefield.
    Tony Mathews Yes for Coupe I will only use 1/16" rubber. I don't see any difference in winding myself, but it's way easier to get the right "size" motor for your plane with 1/16" and it's not bad to make up the little Coupe motors at all.
    Tom Martin The guys I fly with buy 1/4" and use stripping tool to make what they need - from 1/4"(6.35mm) down to 1/32"(0.8mm) - seems to be the most cost effective.

    Beto Castrucci What is worse than fix a "messy" F1B 1/8" rubber motor? Fix a messy 1/16"... I liked the idea of mixing sizes, gonna try.

    Roger Morrell Ross - there is anecdotal evidence that you get more turns and/or energy with 1/16. depends if you believe the anecdotes! I do not think AA uses 1/16? I agree with Tiff that it 'seems' easier to wind but that might just be in my head. The clear advanatage is like Tony says - much easier to get the right length motor and the down like Ladi says a pain in the butt to handle. and my comment to Tom is that I do not think your friends have bought rubber in a while because I do not think they make 1/4 any more ?

NFFS HOF Nominations

Nominations for the 2013 NFFS Hall of Fame will be closing on Feb 28. Please
email a nomination in pdf format to This email address is being protected from spambots. You need JavaScript enabled to view it. .
Try to limit your narrative to one page if possible. For ideas on how to
prepare a nomination, look in previous editions of the NFFS Symposium.
Gary Baughman
NFFS Hall of Fame Committee Chairman

Bill Booth Snr

Hi Roger,

Please pass the word to the Old Timer & Nostalgia group, that my Dad, Bill Booth Sr. passed away quietly with family at his side yesterday morning January 9, 2013.  He was 82.

Dad was very active in the California AMA & FAI Free Flight arena for many, many years and even though his interest had shifted to the SAM events for the last several years, many in our corner of the hobby still crossed paths with him at meets where both types of events were held.  Dad was SAM President in the late 1990's, CD for the Fresno Annual for many years, Co-CD for the Dual Club Annual in recent years and 40 year Editor of the Fresno Model News.  My passion for the hobby came directly from him.

All his friends are welcome at a Celebration of Life 2:30 Friday January 18 at Pardini's Restaurant 2257 W. Shaw Avenue, Fresno, CA

Between Sal Taibi, Larry Clark, Stafford Screen, Jon Davis & now my Dad, it has been a tough month for the Free Flight Community & our family would like to share our condolences with all the families.


Bill Booth Jr.

Remembering Jon

Jon Davis’s Maxine wakefield was the model that started me on a near 30 year run in the team finals. I built several and all were good steady thermal models.
He will be missed.
Rex Hinson


 Jon Davis passed away. I'm pretty sure we were about the same age, which I'm constantly
telling myself isn't that old. The Free Flight community has been hit pretty hard during the last few months.
I guess the best thing we can learn from a loss like this is to truly appreciate those around us…. you never know
 what tomorrow will bring. 
Jim Lueken

Jon Davis

When I first started running around in circles under an F1A, Jon Davis was one of the first people that took an interest in me. I had a unique relationship with Jon in that, I was 13 but my dad would let me make fun of him and engage him in numerous comical insults. He would make fun of me for crying on the field, I would make fun of him for being old. I remember looking forward to World Cup contests because I knew that Mac The Bigot would be there awaiting me with some new quip about me being a baby or feminine for painting my wings Teal and Purple and of course that would give me reason and justification to launch into a tirade about his gray hair and thermal dance. These are things that I will always remember. Jon will be remembered by free flighters all over the world as the young punk kid who stole the show back in the day in F1B. He also made a team in Florida which is a field that has turned dreams into nightmares. I remember calling the hotel that all the sportsman were staying in and tracking down his room #, I dialed it and someone picked up and told me he was currently visiting another room. I hastily dialed that # and got passed eventually to Jon..I identified myself and his first words were "want to come with me to Europe? I need someone to carry my bags". I cherished these types of exchanges with Jon as I knew that this was a truly good natured friendship that not many will know in their life times. I was only probably about 14 or 15 at the time, but I basically had a big 50 year old brother. Jon was loved by so many he came in contact with. He was always incredibly friendly on the field and wanted to always talk about how much fun the sport was. Some people may think that he didn't take the sport serious enough, but I think he took the sport just serious enough so that he could both feel its competition and stress but also its glorious appeal.  I will always have fond memories of Jon. Whether it be sitting in a Denny's eating awful food and talking about how I didn't know what I was getting myself into by moving to Wyoming, or just sitting on the field and lobbing pieces of fruit at each other. I remember leaving the last contest I attended before I moved, and Jon of course was there. I told him that when I get back I will teach him a few things.  When I got back, Jon had already been battling his health issues. I had no knowledge of it before I arrived back in California so when I saw him the first time, I felt saddened. However, after being with him for just a few minutes, I realized very quickly that there was still a humor and heart that I truly appreciated. I will remember Jon for all of the things I mentioned and countless things I haven't. But most of all I will remember Jon as a dear friend, and I will miss him. Benjamin Coussens

Jon's sense of Humor


I had never seen that writeup below from Jon Davis and it was outstanding.  What a great sense of humor he had.

Did he live in Utah, Nevada or Arizona and was he an minerals engineer or something or am I thinking of someone else?

Terry Thorkildsen

Terry - Jon was an architect living in New Mexico.  I agree with Jim the Baggy Rapper Pants is a SEN Classic


Roger Morrell