ORIGINAL: jaka
Hi!
The Graupner Cam prop (Black variant) is rather expensive. The RAM 10x6 is equall to the Graupner 10x6 so I would try that one instead.
RAM are British made props.
But...The APC line of props are prefered in most cases when it come to delivering good performance. So you have to check your self.
The only props you should avoid are the white tipped Master A props. They are loud and give poor performance. The MA ''scimitar'' line of props are rather good though.
How do you think 5% nitro performs compared to 15% nitro that seems to be the norm in the US??
I'll have to look and see if there is a U.S. Distributor for RAM props. If they are better than APC by a decent enough margin, I would buy one to try. I'm done with MA props - I wont use them anymore.
In regard to the Thunder Tiger .46 testing, it doesn't seem to make a big difference on RPM between the 15% and the 5%. The optimum needle setting is narrower with the 5% mix, but aside from that it seems to run fine. The engine restarts very well.
My K&B .65 sportster engine however doesn't take to 15% nitro well. It tends to run quite a bit hotter than it does on 5% nitro, so I'll probably run 5% nitro in both engines, and 20% all castor oil.