patzfan4eva
Veteran Member
- Joined
- Jul 18, 2010
- Messages
- 88
Hello all,
I have done some work on my 34' CHB Tri-Cabin and now she can't get out of her own way. When I bought the boat in Ventura Ca, sailed her down to MDR, Ca I was able to maintain 8+ knots at 1850ish RPM. Since then I have removed the Teak decks, fiber glassed and non-skidthem. I had a diesel run-away which required a complete rebuild of the engine and the injection pump. I replaced the rotten fuel tanks with Polyethylene cells in the middle of the approximate old location, but reduced capacity by half. Repalced two group 27 batteries with 4 deep cycle tall 6 volt batteries in the same location just in front of the engine.
No other major structural changes other than significant cosmetic upgrades like wall laminate, plumbing, paint, varnish, electronics and new heads.
Boat 34' CHB Tri-Cabin
120 HP Lehman
2:1 Paragon Transmission
23" 17 Pitch LH Prop - Tuned by Wilmington Prop in Wilmington Ca
Conditions:
No Load Engine Speed - 2800 RPM
Load Engine Speed - 2050 RPM
Heavy Cavitation
Hut Tub Like white water at the stern
Top boat speed of 5.2 KPH
Easy steering to the Starboard
Incredible difficultly steering to Port
Boat has a significant plowing issue when under power
Solutions tried thus far:
Swapped props -
22/18 4 Blade - picked up .2 of a knot and reduced cavitation very slightly steering issue unchanged
24/13 3 Blade - picked up .4 of a knot and reduced cavitation more but clearly not enough, steering still not correct
23/15 3 Blade - picked up .2 of a knot and reduced cavitation very slightly steering issue unchanged
Reaching out to Trawler community for experiences, solutions or suggested boat mechanics in southern Ca area.
I have done some work on my 34' CHB Tri-Cabin and now she can't get out of her own way. When I bought the boat in Ventura Ca, sailed her down to MDR, Ca I was able to maintain 8+ knots at 1850ish RPM. Since then I have removed the Teak decks, fiber glassed and non-skidthem. I had a diesel run-away which required a complete rebuild of the engine and the injection pump. I replaced the rotten fuel tanks with Polyethylene cells in the middle of the approximate old location, but reduced capacity by half. Repalced two group 27 batteries with 4 deep cycle tall 6 volt batteries in the same location just in front of the engine.
No other major structural changes other than significant cosmetic upgrades like wall laminate, plumbing, paint, varnish, electronics and new heads.
Boat 34' CHB Tri-Cabin
120 HP Lehman
2:1 Paragon Transmission
23" 17 Pitch LH Prop - Tuned by Wilmington Prop in Wilmington Ca
Conditions:
No Load Engine Speed - 2800 RPM
Load Engine Speed - 2050 RPM
Heavy Cavitation
Hut Tub Like white water at the stern
Top boat speed of 5.2 KPH
Easy steering to the Starboard
Incredible difficultly steering to Port
Boat has a significant plowing issue when under power
Solutions tried thus far:
Swapped props -
22/18 4 Blade - picked up .2 of a knot and reduced cavitation very slightly steering issue unchanged
24/13 3 Blade - picked up .4 of a knot and reduced cavitation more but clearly not enough, steering still not correct
23/15 3 Blade - picked up .2 of a knot and reduced cavitation very slightly steering issue unchanged
Reaching out to Trawler community for experiences, solutions or suggested boat mechanics in southern Ca area.