A couple months into our SPX 21 OB with a 150 and it’s been great. It came with the standard 15 x 17 prop and I found a deal on a Enertia 14.5 x 17 which I threw on there last week. I gained a few mph and maybe a little hole shot but rpms seem low unless it’s trimmed up to almost unstable. I have 42mph with it trimmed up list enough to hear the wanted stop splashing off the hull. Rpms are at 5300ish WOT. I can trim up father and the hull comes out of the water more but handles like crap. 45.5MPH at 5600-5700 rpm.
I have vessel view mobile so speeds are GPS and RPM right off motor. My mechanic is not a prop guy and suggested to go down to a 15p prop. I don’t know if I like the sounds of that, I think I’d lose too much top end and be pushing the 5800 limit too easily.
Mostly this is river running and I have Bennet SLT trim tabs installed and the low setting. It’s made cornering a bit better and helped a ton when getting caught up in wakes of other boats. (It can get crowded on the river)
So I’m thinking of trying a 16p SS prop either 4 blade or enertia eco.. I don’t know and don’t have a way to test props without buying them.
Any suggestions?
Sinbin
I have vessel view mobile so speeds are GPS and RPM right off motor. My mechanic is not a prop guy and suggested to go down to a 15p prop. I don’t know if I like the sounds of that, I think I’d lose too much top end and be pushing the 5800 limit too easily.
Mostly this is river running and I have Bennet SLT trim tabs installed and the low setting. It’s made cornering a bit better and helped a ton when getting caught up in wakes of other boats. (It can get crowded on the river)
So I’m thinking of trying a 16p SS prop either 4 blade or enertia eco.. I don’t know and don’t have a way to test props without buying them.
Any suggestions?
Sinbin