Willy Nillie's Shoestring micro racer powered by COX TeeDee010

Thank you, Robert. I am confident the laser printed stickers are well protected by the external transparent film heat-shrunk on the balsa.

We have near freezing temperatures here so the maiden flight is yet to come.

The Shoestring No.2 is powered by a brand new old stock COX TeeDee 010 ( red delrin mount, black steel carb, taper bore in cylinder) with a nice pinch at the Top Dead Center..I gave it a break in run in my unheated garage, about  2×3 minutes with very rich fuel-air setting that kept it in "4 stroke" run near 15k rpm until the castor in the exhaust cleared up from the greyish metal particles and became clear. There still is a pinch indicating the taper geometry stays, but the surfaces are much smoother and subsequent wear of the piston and cylinder mating surfaces drops to minimum.

At the end I peaked it up to  ~26k that, given the thick winter air, will presumably rev up to the specified ~27k in summertime when the air density will be less by ~12%. (As we know it follows from the Rule of gases that each ~27.3C change in gas temperature will entail 10% change in gas density, if the gas pressure is unchanged. Propeller shaft power is directly proportional with air density,  and also proportional with rpm on the 3rd power, on the other hand..so a roughly 12% air density reduction at 32...35C air temperature in summer ( that I am already yearning for) will expectedly cause a  jump in engine rpm from 26k to 27k.

Weather permitting, the maiden flight is coming soon..