What prop do you have with Beta 25. Anyone with Gori any engine

[pjcomeau]

I just repowered my 1988 C34 with a Beta Marine 25. Question for others that repowered with same engine: what do you have as a prop? Make and size?

Others: Anyone with a Gori 3 blade prop? What size and what engine do you have?

I still have the original 15x9 3 blade and very under propped right now. 5.5 knots at 3000. WOT goes to 3800 (engine is 25HP at 3600) and get 6.5 knots. I also have the TMC 40 transmission gear ratio 2.6.

Thanks

[Bill Shreeves]

Can't help with your prop question but, I'm really curious how it compares to noise level and vibration vs the M25?

[mark_53]

Can't help with your prop question but, I'm really curious how it compares to noise level and vibration vs the M25?

Me too Bill...I took a Db reading while out cruising.  My M25XP 3 feet from the open companionway at 2500rpm I got 89Db.  Seated behind the wheel I got 85Db.  I get jealous when I hear other sailboats quiet hum of their engines.

[Jim Hardesty]

My M25XP 3 feet from the open companionway at 2500rpm I got 89Db.  Seated behind the wheel I got 85Db. 

I've never taken a Db reading on my MKll.  Sure it's much less than that. Nothing special has been done just OEM insulation in good shape.  I'm very happy with the sound level.
Jim

[Ron Hill]

Guys : When I replaced my engine (M25XPB 26 HP) I replaced the engine compartment insulation (Mainsheet tech note article).  I went with the 1.25" from Defender and found a notable drop in engine noise!! 

A few thoughts