I built my first Squirrel model airplane kit recently; previously I had built Squirrels from plans. In the past I thought I could save a little weight and substituted balsa strip that was not as wide. In hindsight, the wood included in the kit will result in a better flying airplane with less chance of warps. The wood quality was good in my kit and all pieces were cut accurately. Not having to cut the pieces is a big issue in many schools because they do not want the students using knives or razor blades.
Test flights were done with hand winds and subsequent flights I used a winder. The rubber strip length included in the kit is just right for hand winds with not too much extra which makes hand winding more difficult. Putting in a fair number of winder turns, the Squirrel climbed quickly to a really good altitude. Normally the glide is not too good which is usually the case with small rubber models when the rubber shifts and the prop starts wind milling in the decent. For the last few flights I switched to 3/32” width rubber and put in a larger number of turns. The plane did not climb as high, but I think the duration was slightly longer, I was not real good on recording data this time. More interested in having fun flying, the geese in the park seemed to be interested in what I was doing also.
Ordered a few kits from Darcy. In the meantime built one from the plan. The motor stick bends under power. I thought I used the sterdeous balsa I have. How do I determine the right balsa?
I find laminating two pieces of 1/16th works well. If the grain is not quite matched it’s a bit like a plywood yet strong…
You can also glue a strip of 1/16 to the side of it so it’s like a T cross-section.
Can you send a video of your flying attempt?
have built a kit like this recently. Could not get mine to climb no matter how much I deflected the elevator.
There are some other things that may work better to get your Squirrel to climb. More torque from the motor will provide more power to climb. Put more turns into the motor. A thicker motor will also produce more torque. If your Squirrel does not make a slow descending glide, move the wing further forward until it does. It is a good idea to get a slow glide before adding power.
You can also make a lighter Squirrel that will climb better. See my instructions for building a simpler and lighter Squirrel.
Gary, just flew my Squirriel built from plan using my balsa stock. It flew in a tight left circle with little lift. Checked motor stick and it was slightly bowed to the left. Have to make another stick using your laminating 1/16 balsa sheets method. Also, how many turns can be safely put into a 3/32″ motor?