Only if I run for a long time, I used to run in hot weather (85 degrees +) for short periods but no longer, preferring cool weather. There's no ventilation in that over crowed turret, plus all that heat will sap battery power, along with heating the DMD unit, servo, receiver and turret motor. I'm not to concerned with the motors and heat won't affect the gearbox, its just the electronics you have to be careful with, DMD costing $350.00 retail and all.

The only problem I've had with the Leo was that at first, I used standard model glue to build this kit, a BIG MISTAKE!! I had parts falling off left and right while I was still building the kit, at that point I was getting a might tiff (a little angry, Tamiya did not recommend any proper glues to use), finally I found the proper glues and had to rebuild the Leo, scrapping off the old glue. Since rebuilding my first Leo no part has fallen off, nothing at all, ditto my second Leo which was built of course from the ground up properly. When built right, this 1/16 scale tank is nearly as strong as metal tanks, and cost a whole lot less http://www.sonderfahrzeug-modellbau.de/palette.htm look at the price of the Leopard A5 in 1/16 scale, full option, http://www.sonderfahrzeug-modellbau.de/produkta2.htm 1,960 Euros or $2,500 dollars!! And remember, its 1/16 scale. I've built a lot of models in my time and this Leopard from Tamiya is by far the most enjoyable, fun kit I've ever owned, growing pains and all.

And I love displaying both Leopards, being accurate scale models, although the first one is in need of repainting due to scrapping against rocks and always getting coverd in loose sand and dirt/mud.

Calvinwill