Tiller Pilots

Installation of instruments and electrics in the Cape Cutter 19

Re: Tiller Pilots

Postby Dennis » Mon Apr 08, 2019 9:52 am

The magnetic interference comes from the magnet which is embedded in the flywheel. It is there to operate the magneto ignition system, it makes no difference whether it is two stroke or four stroke. Different manufacturers outboards cause more or less interference depending on the physical location of the flywheel relative to the tiller pilot fluxgate compass.

I have had experience of three different outboards in use with tiller pilots, a Mariner 4 caused no problems. Whereas a Yamaha 4 and Honda 5 produce significant interference.

Hope this helps.
Cheers

Dennis

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Re: Tiller Pilots

Postby Stephen Foyle » Mon Apr 08, 2019 10:25 am

Hi Dennis & Charles,

Thanks for that. I have a Yamaha 5hp so seems interference is likely. Can you recommend a tiller pilot or system to buy or,probably more importantly, what system not to buy! Would love to go to your Whitsun rally to talk to you all and see the boats but unfortunately it’s a very busy time at work here.

Kind regards,

Stephen
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Re: Tiller Pilots

Postby erbster » Mon Apr 08, 2019 5:09 pm

I copied Dennis! Got a flux gate compass second hand from Ebay. However, I still haven’t been able to get it to talk to my tiller pilot. There’s no doubt that the addition of an external compass adds significantly to the cost/complexity. My need for a tiller pilot is not critical so I haven’t got my system working yet. Dennis uses his regularly and it gives him good service


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Re: Tiller Pilots

Postby Julian Porter » Tue Feb 16, 2021 3:03 pm

Stephen Foyle wrote:Can you recommend a tiller pilot or system to buy or,probably more importantly, what system not to buy!


Where did you get to with your quest for a tiller pilot?
Thanks
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Re: Tiller Pilots

Postby Malcolm Sadler » Fri Feb 26, 2021 9:02 pm

Thanks to all for the wisdom and guidance in this string.

I too am toying with the idea of a tiller pilot. I bought a non-electronically-working one from a very nice man who advertised it on Gumtree for a sensible price. The mechanics work, he tells me, so I thought this might be a cheap way to find out if I can use a TP near my Mariner 6hp 4stroke assuming I can fix the electrics on the TP.

Can I ask please the following :-

1 - is the magnetic interference from (some) outboards only when the outboard is running ? Ie. Can you use a TP successfully when under sail only ?

2 - my research on the net found that one boat owner had overcome magnetic interference by cantilevering the TP so it was over or even beyond the coaming - so fitting a long extension to the push/pull rod connected to the rudder. Does anyone know if this works on a Cape Cutter ? It moves the internal flux gate away from the o/b sideways rather than lengthways - I thought it was a nice bit of lateral thinking!

All views welcomed

Best

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Re: Tiller Pilots

Postby erbster » Sat Feb 27, 2021 7:56 am

The magnetic interference on my Honda comes from a magnet at the top of the engine. When the engine is running it is spinning and will prevent the flux gate compass working. When it’s not running, there will still be interference- as I
understand it, it will cause a compass deviation, but it will be different every time after the engine has run.

Your engine may be different, so it may not be a problem for you.

My TP is cantilevered from a fitting which screws into the wall of the cockpit, to a bracket on the lower side of the tiller. The TP also needs an extension to the piston. I don’t think I can fit the TP any other way, but open to ideas. I’m looking for a boat electronics retailer who can advise me. The problem is that the big online chandlers seem to be “box shifters” and not able to give much advice. The kit which Dennis got is fairly simple and compact, but is no longer available.


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Re: Tiller Pilots

Postby Malcolm Sadler » Sun Feb 28, 2021 12:23 am

Thanks for that Charles

I’ll proceed a step at a time - see if I can get the TP working on the bench first and then start introducing the outboard. Happily the o/b is in my shed at home over winter so I can experiment in controlled conditions

I will report back

For the record the chap who set the TP at a distance is on https://youtu.be/je4LwjXR2wY He said it overcame the problem with his motor

All the best

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