This is the 2nd episode of a new flying model series, inspired by the many flying & trimming questions I've received from viewers on my channel in recent years. There are many, many ways to trim a model, but the approach seen here is what has worked best for me, so that's what I will share. I try my best to take a grass roots approach, as I was taught by my many mentors early on within the Flying Aces Club. Hopefully this methodical step by step will be universally understood and successfully received by newcomers to the hobby.

You can build the same model twice, yet they may need totally different trimming solutions. Therein lies the challenge & fun of rubberpowered freeflight.

This updated episode of a trim session focuses on flying the 31" rubberpowered freeflight biplane, called the Martinsyde S.1, which was designed in 1914 as a scout during the early part of WW1. Filmed and flown by Tom Hallman on May 15, 2021 in beautiful Wawayanda, NY, using a Canon PowerShot SX20, iPhone 11Pro & 14Pro. Music via the talented musicians at artist.io, who breathe life into my films.

Model based on this free plan: http://www.hallmanstudio.com/Martinsy...
Tutorial on making the 31" Martinsyde:    • Making the RubberPowered 1914 Martin...  

Future episodes will show trim sessions with problematic models that need help in becoming stabile flyers again, including scale hiwingers, lowwingers, and biplanes. My hope is that these films will become foundation tutorials for newbies in the hobby, answering many of the generic questions that all modelers with limited experience will surely have about rubberpowered freeflight modeling.

FreeFlight Basics #1 about braiding motors:    • Free Flight Basics #1  Series Premie...  
FreeFlight Basics #4 about thrust plates and nose blocks:    • Free Flight Basics #1  Series Premie...  
FreeFlight Basics 9.1 about building a wing with sliced ribs.:    • FreeFlight Basics #9.2  Making A Wi...  

*** 10 steps to trimming a rubber model, by John Koptonak: http://www.flyingacesclub.com/PFFT/Tr...

Also, these tutorials from Easy Built Models: https://easybuiltmodels.com/tips.htm#...

Here's a source for rubber: https://www.faimodelsupply.com/produc...
Generic rubber turns calculator: http://hallmanstudio.com/rubber_turns...

Article on the use of dethermalizers: http://www.hallmanstudio.com/DT.pdf
Badge Classic DT & spring (at the bottom of the page): http://www.starlinkflitetech.com/tim...

Looking for a Flying Aces Club near you? Check out this link: http://flyingacesclub.com/wp/aboutth... If you click on the map at the area closest to you, it will automatically bring up an information request link. That request goes to FAC GHQ and also to the Squadron Commander of record for that squadron.

Geneseo FAC Nats Journals from 2016 & 2018: http://www.maxfliart.com

For more info on freeflight rubberpowered models, check these websites:
https://brooklynbalsa.square.site
http://www.easybuiltmodels.com/
http://www.volareproducts.com/BUY/
http://www.flyingacesclub.com
National Free Flight Society https://freeflight.org/
Mike Stuart's Flying Scale Models http://www.ffscale.co.uk/
https://www.freeflightsupplies.co.uk

Flying Aces Club merchandise: https://www.cafepress.com/flyingacesclub
All profits support Flying Aces Club activities.
Center of Gravity merchandise: https://www.cafepress.com/centergravity