ORIGINAL: can773
Also if you think the weight limit doesn't affect the size of the model, just imagine what size of bipe you could have with a 15 lb limit and 2x2....then imagine the YS 250DZ that you would need to power it, then imagine the enormous price tag associated with that.
I have stayed out of this since I don't compete, but this seems silly to me. If you step up to a 2x2 model with a 15lb limit, that is not YS territory, that is gas engine territory. And you can buy one amazing gas engine, with pipe, for about 2/3 (maybe less) what the current YS170's cost. That seems to me the only place where an increase to the weight limit would help, though. It's also getting close to the first gas TOC planes or smaller IMAC models...
Really, it is a competitive endeavour that uses technical equipment for the competition. No matter what you do, some individuals will always stretch the limits of the rules no matter what the cost. That is how it works. This is the same complaint that you hear regarding lots of racing. If you can't afford to run with the big dogs, find sponsorship or stay at a lower level that your pocketbook can afford. It's not fair or just, it just is.
If you want to limit cost, reset the box to 1.7mx1.7m, set a max weight of around 8-8.5lb and limit engines to 0.9cuin regardless of type. Maybe set a maximum battery pack size as well to even off the electric guys if it becomes necessary. Basically, this would step back to the mid 80's in aircraft size. Makes building, storing and transporting easier and cheaper and the smaller engines use less fuel. Radios, servos, etc. will still cost a lot, though.
Mark