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Forum: Engines & props

12 December 2019, 14:31

Replies: 19

Mercury 90hp Saltwater - 4 blade prop?

Views: 4,368

Posted By Appleby

How about grip at cruising speed with higher load...

How about grip at cruising speed with higher load and torque on steering? The latter I find really tiring.

Forum: Engines & props

12 December 2019, 12:46

Replies: 19

Mercury 90hp Saltwater - 4 blade prop?

Views: 4,368

Posted By Appleby

Hi, Have you tried the Lazer on a similar...

Hi,

Have you tried the Lazer on a similar rig?

Best,
A.

Forum: Engines & props

12 December 2019, 03:35

Replies: 19

Mercury 90hp Saltwater - 4 blade prop?

Views: 4,368

Posted By Appleby

Have found: Solas HR Titan 4, either 13x21...

Have found:

Solas HR Titan 4, either 13x21 or 13x19
Solas Rubex HR 4, either 13x21 or 13x19
Mercury Spitfire X7, 12.7x21, has Performance Vent System (PSV)

So perhaps the Spitfire X7 12.7x21...

Forum: Engines & props

11 December 2019, 22:50

Replies: 19

Mercury 90hp Saltwater - 4 blade prop?

Views: 4,368

Posted By Appleby

4-blade would also improve grip and decrease...

4-blade would also improve grip and decrease torque on steering I understand.

Still not sure what size/pitch to go for in a 4-blade. Any suggestions?

Forum: Engines & props

11 December 2019, 06:22

Replies: 19

Mercury 90hp Saltwater - 4 blade prop?

Views: 4,368

Posted By Appleby

WOT range for the engine is 5000 to 5500 rpm, at...

WOT range for the engine is 5000 to 5500 rpm, at full chat the she does approx. 5200 rpm.

Forum: Engines & props

10 December 2019, 12:19

Replies: 19

Mercury 90hp Saltwater - 4 blade prop?

Views: 4,368

Posted By Appleby

But what pitch I am supposed to go for?

But what pitch I am supposed to go for?

Forum: Engines & props

10 December 2019, 07:34

Replies: 19

Mercury 90hp Saltwater - 4 blade prop?

Views: 4,368

Posted By Appleby

Mercury 90hp Saltwater - 4 blade prop?

Hi,

I have an Avon SR5.4 with a Mercury Saltwater 90hp 2-stroke swinging a Solas 13x21 aluminium prop. Top speed with this rig is about 37kts.

I'd like to change to a 4-blade prop to improve...

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