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Old 22-09-2019, 08:58 AM   #1
Registered User
 
Country: Germany
Location: Bavaria
Boat name: Raptor
Boat make: Ring 21b
Engines: Mercury Racing 2.4 Bridgeport

Join Date: Sep 2019
Location: Bavaria
Posts: 5
Ring 21 setup help needed

Hi all
im new here and have a few questions about the right setup for my ring 21 b
My engine is a 2.4 Mercury Racing Bridgeport.
Have a manual 5,5" setback on the boat.
The Propshaft was 3 1/2 " below the keel.
The boat runs 90km/h with 6800 rpm with much trimm.
Using a 26" Chopper 3 Blade.
i reached the height limit with my manual lift on the setback.
Yesterday i raised my engine up 2 holes. So for now i im 1 " below the keel.
What do you think about thios height with the chopper. should i go more up?
I cant test this weekend and on land is better to adjust the on the water.
I have 2 more Props to test.
a 27" Cleaver
and a 22" Chopper.
My Gear is 2:1 and i habve a nosecon with low water pickup.

Heres a Picture of the Engine (an older one without setback)
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Old 24-09-2019, 09:04 AM   #2
Registered User
 
Country: The Netherlands
Boat make: RING 21C
Engines: Mercury 2.4carb 200 (Mazco RE4, Chopper 24, Tempest 24)
Cruising area: The Netherlands, Gardalake (IT)

Join Date: Sep 2007
Posts: 152
Hey Menix, also here on BM, welcome... There is a CLE unit underneath you BP, not a lower with nosecone. Engine height is trail and error, a waterpressure gauge is a must in this case! A hydrolift will be ideal...

A chopper is a good prop for this setup, will give you a great bowlift. This is what a ring needs. But a 4 blade chopper style will carry the bow a bit more. I don't know the perfect setback for your model, but Ring recommends 15" for the 21C. I think you need to sell that engine, to me :p
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