OK. I need to cast a wide net on this issue and see if anyone can help. Here are the specifics on the setup for the boat:
MS115L-B 2.61:1 Transmission
Volvo 3 blade
Forward RPMs are around 3,000 full throttle
Reverse RPMs are around 1,500 - 1,700 at full throttle
The Volvo dealer said we should be getting similar RPMs in both forward and reverse. However, there seems to be conflicting information on this from others. I know that with the Volvo folding props, there is an impact to reverse 'bite', but not such a major impact to RPMs?
Does anyone have any ideas on this? I just can't seem to feasibly think that 1,500 - 1,700 RPMs in reverse is 'normal' - especially when you factor in the folding props being less efficient in reverse.
Any thoughts would be appreciated!'