ORIGINAL: serious power
Hi Matt,
Your solution is good but would be seen as less practical.
Maybe a max take off weight + a pre-set allowance for IC is a simple solution.
There is a reason why a lot of people are referring to take off weight.
At present a IC model is weighed dry and for flight fuel is added.
But any amount of fuel can be added.
So it's thought that take off weights should be controlled to ensure fairness and equity.
Surely it is what flies that should be specified.At present we have a RTF specification for Electric but IC models can be adjusted up weight wise to whatever somebody wishes.
So I think the only thing that matters is can extra weight ever be an advantage.
Colours to the mast ; I think it can be.
Brian
Of course I know that Brian.
My point is really simple, so simple guys fail to see it.Exactly what I'm saying too,current 5 kilos plus fuel allowance. Make the fuel allowance an average weight based on the thirtiest powerplant the YS170-175 running glow. I think the YS drivers need a reasonable weight here to make it practical (Of course the final allowed weight appliesequally to all power types)
Forget about how much gas a competition flight needs, it is irrelevant for setting a maximum allowance / model weight in the regs; rather, base the allowance on the typical tank size people use on their YS powered planes, which is 20 fluid ounces. Do some use 12 oz tanks? perhaps... do some use 22 or 24 or maybe even 30 ozs? probably... The 20 fluid ounce tank leaves no one outside looking in and obsoletes nothing.
Next, the weight of 20 ozs of appropriate glow fuel is18 ounces. Take half that weight and that's the allowance. True, under this schema the wet powered model's TAKE OFF weight may be higher than the average allowed weight, but make that concession up front andget folks to understand the consumable part of the equation. It doesn't need to be any more complicated than that.
Or forget about allowing the TAKE OFF weight to be higher. Just concede on adding 9 ozs (about 260 grams) to the current 5 kilos. That's the new max, gassed up and RTF