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Forum: RIBs & ribbing 12 May 2016, 07:05
Replies: 8
Views: 2,005
Posted By JoaAmb
Tested the Spitfire yesterday, 24,5 knots maximum...

Tested the Spitfire yesterday, 24,5 knots maximum (27 before). Hole shot and curv handling/speed better. Do not know which prop should be the primary though. Thought it would be closer top speed...
Forum: RIBs & ribbing 07 May 2016, 05:58
Replies: 8
Views: 2,005
Posted By JoaAmb
I checked the Mercury prop page and for my setup...

I checked the Mercury prop page and for my setup they recommend a Four bladed Spitfire 9.3 inch/11 pitch prop. Almost the same size (9.75/11) but four bladed should get more bang for the fuel...
Forum: RIBs & ribbing 06 May 2016, 16:32
Replies: 8
Views: 2,005
Posted By JoaAmb
I found a picture and I have a 9.75 inch, 11 inch...

I found a picture and I have a 9.75 inch, 11 inch pitch, 3 blade propeller with model name 48 896896a40 11p.

Max speed: 27 knots, 6000 rpm 1 person (2 not tested)
75 % rpm = 25 knots
Boat levels...
Forum: RIBs & ribbing 06 May 2016, 16:21
Replies: 8
Views: 2,005
Posted By JoaAmb
Two solutions solved the problem: 1. The...

Two solutions solved the problem:

1. The trim was way off.
2. I had some water in the hull, changed the valve in the back and no water inside anymore.

Went from 22 knots to 27 knots. I forgot...
Forum: RIBs & ribbing 06 May 2016, 09:38
Replies: 8
Views: 2,005
Posted By JoaAmb
Arimar 360+Mercury 25 EFI

Hello,

I have a small dingy, a Arimar 360 Topline with a Mercury 25 EFI from 2007. It makes 22 knots with 2 people (150 kg). From 75 % trottle and upwards it only makes 1 knots more.

What am I...
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