Bushwacker |
06-29-2015 11:26 PM |
If you were ever going to make the switch to hydraulic steering, now is the time to do it, but like anything else you need to be aware of the pros and cons! Advantages of hydraulic steering, besides the ability to handle big HP that Ken mentioned, are no torque feedback in steering when you trim the motor down, i.e., the motor will stay where you put it, and fewer corrosion problems. Disadvantages are slower steering response and a LOT more cost and more maintenance. (Figure on spending ~$100 to replace leaking end seals on the hydraulic cylinder every 2-3 years. I never had that problem on my Hynautic system, which seems to be higher quality than Teleflex, but I think Hynautic was bought by Teleflex, so it's no longer an option. I read somewhere that the problem was the build up of salt crystals on the steering ram that tear up the seals, so it helps to wipe off the ram with a rag/WD-40 at the end of every day.
The other disadvantage of the latest hydraulic systems is that, by design, it will only turn your motor thru about 2/3's of it's available travel! This is a serious handicap to low speed maneuvering around docks, etc.! This was evidently dictated by the ABYC or NAEBM - the bureaucrats or lawyers were supposedly worried that some idiot would try to put the helm hard over at WOT and flip the boat, so they intentionally limited steering travel! (Never mind that most cable systems will do this on their own if you just let go of the helm! But when bureaucrats get involved, logic or common sense is no longer a requirement!) I believe I can fix this by selective swapping of older longer steering rams & brackets with newer cylinders, but I'm still working on it!
My old Teleflex cable system had a pretty fast ratio, about 3.5 turns lock to lock. Teleflex makes 3 different size helm pumps, so you can trade the small standard pump for a larger one for a faster ratio with higher effort. The standard helm (smallest displacement) will give about 5.5 turns. When I repowered and added bracket, I went with the medium pump, which is about 4.5 turns, since I wasn't sure how high the effort would be. Turns out it's very low, so if I were to do it again, I'd get the highest displacement pump.
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