Test report #2,.
I was able to put the boat and engine through the paces a bit more today. Things went well. I can see that I do need the CG a little more forward,.. I lowered the strut a bit more than optimum to keep it in the water,.. still blew off a time or two when the tanks were low. Overall a super running SP40..
I ran 2 props today and a a few pipe settings. The first prop was a x448,.. stock ,. Pipe at 9.25,.. shortened pipe to 8.625,.. and yeah,.. it was turning serious RPM,.. and fast.. I switched to x450,.. The boat was stupid fast but this showed the need for moving the CG,.. at less that half tank the boat would lift.. also it took a long time to spool up.. but damn,.. it was really freakin cooking that first half,.. very impressed.. After a very long wait while the boat got close enough to cast for I decided to pull the pipe back but run the same prop.. just to get more time learning to drive the boat.
The video here is with the 450 and the pipe at about 9.125,.. not the fastest setting by far.. but still cookin.. The boat did blow off at the end of the run. I will be getting the CG to 1in behind the sponson heal..
Still I think this boat rocks.. The boat is big for a sp40, and it's real fast.., and handles fantastic. now I have not had it in a lake full of sp40 boats.. and this video was calm water,.. true.. but more testing and video to follow.. Also.. this was far from the fastest runs.. it was a good deal faster with the short pipe.. but I didn't want to go back there till I get the CG adjusted. flipped anyway.. but still BIG FUN MAN
Next testing will be with a MS 450 with some slight improvements. Also a macs pipe with Rumracing stinger.. Might try the stinger on this pipe to see if it gets real quite,.. gotta keep the lake man..
Please provide comments and suggestions,..thx
