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12-07-2015, 04:49 PM #15000 RPM
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Alternative steering helm to Mercury Verado power assisted steering
Hi,
I hope you are well.
I have a power assisted hydraulic steering on my Phantom 25. Its standard system coming with Verado 350 sci. However, the helm is not accurate enough, and I am looking for a replacement. The steering sylinder mounted to the engine is dead accurate, but its the control helm which is the issue.
I have seen some use Imco steering helm and control helm. I am not sure about the model though. Have you any ideas?
Thanks!
Cheeers, Toffen
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12-08-2015, 04:19 PM #2The Historic Photo Master
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www.LathamMarine.com Give 'em a ring. Ask for Bob.
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12-09-2015, 03:58 AM #35000 RPM
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Are you sure the helm is not accurate enough? You can use the 50cc helm for twin verados instead of the 40cc helm for the single engine for better response and less turns lock to lock. I have the Verado 50cc power assisted helm mounted to an IMCO side ram and wingplate on a 250 XS optimax. Rock Solid steering system which is very accurate and easy to use.
If you want something different to the Mercury setup, the best would be a Latham setup (very bulky and heavy but works great) or the Hy-Drive system which is Australian and on par if not better then the Latham system. Both the Latham and Hy-Drive system are pressure sensing pumps, meaning they will activate when they sense you turning the steering wheel. The Verado systems are continuous meaning that the pump is always running.Last edited by bep078; 12-09-2015 at 04:01 AM.
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12-09-2015, 06:15 AM #4
Toffen:
Some of your problem would probably be remedied with a cambered skeg Sportmaster from a 400R. The cambered skeg is on there for a reason. Merc Racing specified the 350 SCi was not meant for speeds over 80, and you are over 80. The cambered skeg on a single takes a out lot of the preload you have to put in the wheel to keep the boat going straight. This puts constant pressure on the helm, and all helms leak some, causing your steering wheel to do laps just to keep the boat straight.
Does this sound familiar?A problem is only a problem when viewed as a problem...
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12-09-2015, 07:46 PM #5
what is a cambered skeg? do you mean a torque tab?
21 Tuff, Mercury 300X
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12-09-2015, 07:55 PM #6Screaming And Flying!
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must be cambered is usually a phrase used in structural beams and truss's, joist and such to accommodate for a vertical load on a member to prevent sagging when roof decking us loaded with snow water and just general span compensation its alsp first time i heard it used like that
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12-09-2015, 08:26 PM #7Screaming And Flying!
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The whole skeg is curved
Much better than a tab bolted on the end
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12-09-2015, 10:03 PM #8
That is how Merc Racing refers to it in their literature. See "Gearcase" in pic.
I believe it has a parabolic shape, instead of a big ol' hunk o' stuff right on the tail. It is supposed to take some of the steering torque away, and is also supposed to help with speed in that situation where you have to put a lot of wheel effort just to go straight.A problem is only a problem when viewed as a problem...
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12-10-2015, 06:35 AM #9
The Verado systems are also pressure sensing, and they are always running, the difference is they switch between low- and hi-speed. The Latham pump system does a good job, but they are LOUD. You can hear them at the dock over twin Verados running. The Latham system I drove was running all the time, and was the loudest thing in the boat until wind noise took over.
A problem is only a problem when viewed as a problem...
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12-10-2015, 06:51 AM #10
teleflex also makes a power steering system(of sorts) but their pump runs on demand
action mobile marine, 772 528 0754, dealers for aces fuel products,wolf efi, pro marine,latham and gaffrig/livorsi. we build gearcases and modify them(3 litre) to ratchet, and powerheads as well. 21 skater/3 litre wolf efi 113 mph the engine build http://www.screamandfly.com/showthre...-3-litre-build
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12-10-2015, 08:05 AM #115000 RPM
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I tested the Teleflex system. Both their electric pump that connects in line with the Seastar steering system and their new fly by wire system. I would not recommend them for high performance boats like ours as the steering response does not come close to the Verado/Latham system, there are great for larger style cruisers where steering input is not as critical as on the smaller high performance boats...
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12-10-2015, 09:12 AM #12
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12-10-2015, 09:23 AM #13Screaming And Flying!
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Its a mod that has been done with a hammer for 30 years as far as i can remember
Last edited by powerabout; 12-10-2015 at 09:32 AM.
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12-10-2015, 09:36 AM #14Screaming And Flying!
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I am wondering if you could use a linear electric actuator with helm?
No pipes no oil.
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12-10-2015, 10:57 AM #15
You can use a charlynn 75cc open center helm much better
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