ORIGINAL: HFrank
You're right David, Guanajuato is a beautiful state and I really love the capital, I'm often there !! regarding the ST S40 you are planning to install, I think it will not have enough oomp and your Tsunami will not shine in the air, you will end up with the OS 46. I think the piped YS 45 will overkill, remember this is a very light airframe.
Regards
Francisco
Francisco,
thanks for the advice. What engine are you running? (edit: Just saw it in your post above.) What prop/rpm are you using and does it feel like the right combination? I was debating between a 10x6 and an 11x5 but leaning to the latter for increased thrust.
I checked the specs on the engines:
OS 46AX: 1.65 ps/16K | Weight 13.2 oz, 17.2 oz w/ muffler | RPM - 13,200 @ 10x7 / 13,100 @ 11x5 / 11,800 @ 11x6 (ideal)
ST GS40: 1.15 hp/17K | Weight 13.1 oz, 19.1 oz w/ muffler | RPM - 11,700 @ 10x7 / 11,850 @ 11x5 (ideal) / 10,450 @ 11x6
The tach readings are real world. My engine is actually a slightly older model (an S40 not a GS40) but I suspect the performance is the same. I'm wondering if spending ~$100 on a pipe setup for the S40 will bring up the RPM by 500-1000 and give me enough pull. This would cost less than a new engine and have a coolness factor; not because of the pipe but because the model and engine would both be vintage pieces (to me at least).
I guess if the ST S40 is a little lacking, I can go with the 46AX or maybe a muffled 45 FSR or YS 45 (pumped
) if I can find one. I like the ABC's better than the newer ABL's.