Raymarine St4000 with Trim Tab Problem

[Snowpetrel]

Originally Posted by Rustic Charm

Well, the auto pilot wouldn't be engaged during reversing.

I think the hanging up and putting stress on the system is what happened with the st4000 when I left the RiP.

Thats what you think! But it only takes one mistake, maybe a windshift catching you aback, or an awkward wave in light airs.

It can easily be avoided by designing it correctly so it cannot happen.

[GILow]

Originally Posted by Rustic Charm

I can't seem to send an attachment to you Matt in a PM.



Can you look at this sketch.



firstly, Where do you propose the axis for the new trim tab tiller go?



Secondly, how long should the handle off the trim tab should be? Does this even matter?

Axis on or near the axis of the rudder itself works for me. Length is a good question. I'd make a first version out of timber, much too long, drill lots of holes and then go out and experiment with the pivot point in different positions and the attachment point of the autopilot ram in different holes. You'll soon get a feel for the best ratio of lengths. Then I would make sure the final product is longer than needed so I had options in the future including attaching a H axis windvane which is going to be so much better than a crappy electronic system.

Matt


Sent from my iPad using Cruisers Sailing Forum

[Rustic Charm]

Hey guys,

Thought you might be interested following from my broken auto pilot GP4000 that occurred whilst I was leaving the RIP. I was surprised today to receive a new GP4000 ram from Raymarine freighted to me. Comes with an extra six months of warrantee.

[Snowpetrel]

Thats great. Really pleased Raymarine are honoring the warranty on this. I will take back some of my bad thoughts on raymarine! Thanks for the update.

Sent from my SM-G930F using Cruisers Sailing Forum mobile app

[Rustic Charm]

Originally Posted by Snowpetrel

Thats great. Really pleased Raymarine are honoring the warranty on this. I will take back some of my bad thoughts on raymarine! Thanks for the update.

Sent from my SM-G930F using Cruisers Sailing Forum mobile app

I admit to being a little surprised myself. I included a letter with a reason why I had opened it up and soldered a wire back on. Must have accepted my explanation I'd even forgotten they had it.