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Should torque steer trim tabs be set on new TomCats?
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Wefings
Dealer


Joined: 29 Nov 2005
Posts: 2086
City/Region: Panhandle
State or Province: FL
Photos: Cruise Ship #4
PostPosted: Thu Jan 11, 2007 12:14 am    Post subject: Reply with quote

I just got caught up with the site , Wow , lots of stuff going on ! As for the motor mounting , the left hand rotation motor is mounted on the right side as you look at the stern towards the bow [ or , standing behind the boat looking forward] the right hander is mounted on the left .

Hoop, we are a long time Twin Vee Catamaran dealer and they did some testing a number of years ago and found that they consistently picked up a knot or two with this 'Backwards" setup . They are also a planing design like the Tomcat . If it were a displacement cat like a Glacier Bay , I dont know if it would have the same effect .
We also got our first Tomcat with 2 righthanded motors and it was night and day when we switched to a counter rotator on the right side .

John , The liquid tie bar system is a proportionong valve to keep the alignment of the motors consistent hydraulically or with set amounts of fluid going to each cylinder as opposed to one cylinder controlling both motors with a mechanical Tie Bar between the motors. They do it to clear the transom for boarding and to keep from having an extremely long tie bar which is not as strong as a short one . Bob is right that the systems dont like one engine " up " all the way as it harder to turn while tilted. Lots of geometry going on .Again the faster you go the more the steering system has to work , and they can only do so much before it spits fluid from somewhere [there is a relief valve in the reservoir cap and on the helm pump itself ]. So slow speed is ok for one engine up and only lift it to just clear of the water or a little less than that . Again , I hope this clarifies a little .

BTW, its always a good idea to carry a quart of steering fluid [seastar oil] on board .

Marc

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drjohn71a



Joined: 15 Jul 2004
Posts: 1820
City/Region: Wichita
State or Province: KS
C-Dory Year: 2007
C-Dory Model: 255 Tomcat
Vessel Name: Tom-a-Hawk
Photos: Tom-a-Hawk
PostPosted: Thu Jan 11, 2007 8:54 am    Post subject: Reply with quote

Marc, Thank you so much for all that info. You know these boats don't seem to come with a concise instruction manual. My manuals, stacked up, are almost 8 inches tall!

So good to hear what we need to be careful of, and about the extra steering fluid.

Thanks again! John
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