It's all relative to being safe for flight; my Blanik glider had shaped lead weight secured to inside the forward most frame, just inside the nose cowl to keep correct w&b. A normal practice like Jabs put lead shot in the tail etc.
Not sure; the data sheet for Radicool premix I read was water percentage at 40 to 50% and sg 1.07. And freezing at the 50% is listed; therefore assume close to 50:50 mix.
Get Castrol Radicool premixed and get a price from Maxiparts as will be cheapest I reckon. You need about 2.5 litres and premix will be a 5 litre pack.
Understand; however that is what I desire and believe there would be others out there in the aviation market sector. Could be retro fit to the existing 230 fuses. Not everyone wants to travel vast distances; just operate within say up to 3 hours and carry 5 plus hours of fuel. IMHO.
Agree; as I have said a few times I would like to see an option of a slower wing that would allow the average low hour pilot to get out with a shorter ground run and slower stall speed and therefore less float so land much shorter. Give their aero engineers a challenge. Cheers
Re push pull cables; my recommendation to all is to buy only genuine replacements; not knock offs. Because I have investigated the failure of an inner wire that was a full break and the cable was a non-genuine (Engine control of a 32 meter tug boat). Metallurgy testing found a high level of a certain mineral that was a cause of the failure. Such a break failure would not be good; with wire cable you have a chance of seeing progression of degrading of the cable.