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So based off of what Raymarine lists for their drives' vs boat displacement, there are two options: a linear fit, or some exponential/polynomial variation. With linear, a 8" arm will equate for a 19.2klb boat where as a polynomial fit would equate to a 21.3klb boat.
So with a 8" you would be close to or at the limit to what Raymarine would consider the Max displacement of their Type 1. Where if you went with a 11" say for example would equate to 26.5klb linear and 25.4klb poly, which at the worst would be rated 4k or 2 tons higher, which would equate to less power required in heavy seas.
Not sure how you mean to turn in her length, but we get in and out of our slip no problem with a 5' davit and ~60' of horizontal clearance to enter the slip (so she still turns about the same).
I only had to move the stops out 1" to meet (just before the ends of the autopilot). Before the install I could turn the wheel helm about 3 times over in a direction and after the install it goes 2.75 times over so not a huge difference.
Hope that helps? ???
Chandlery / Re: Looking for 365 ketch
« Last post by Jim S on April 18, 2019, 10:09:27 PM »
I know of one near Galveston that may be available
I think the displacement is 17,700. Fully tanked up it jump to 19,250. Add gear and I would guess 21,000 but that would be loaded to the max at the start of a long cruise. The vast majority of time I would be less than 20,000 lbs.
Can you still turn her within her length?
Hey just took her out the other day for the first time since the addition.
In truth I hardly notice the difference.. If anything just a bit higher rpm to walk the transom but not much else.
In comparison to the wheel pilot, this one has been really great. it drew 1-3 amps under a moderate 5ft chop and went to 6 momentarily when we got broadsided by a rouge biggie, it did not show any issue of struggle or issue maintaining course.. So far/overall we are very happy with it. We are set to start our crossing next month and cruise the rest of the year, so i'll be sure to give a tried and trued testimony.
Run the quick 'recommended' displacement calcs for torque to boat displacement to see if 8" works, I seem to recall it is close to 20k lb.
Just curious, how has reducing the stop angle affected boat handling in tight spaces? I am thinking of going 8" on the tiller arm as a compromise. I figure loaded my boat would be about 20,000 lbs. 
Chandlery / Looking for 365 ketch
« Last post by S/V AMITY on April 14, 2019, 07:25:07 PM »
Any one have or know of a 365 ketch for sale on East coast?  Have been looking on Yachtworld but thought possibly someone here might have a lead on one that hasn't hit the market yet.  Thanks & cheers!
Making progess-just need to cover screw holes, put in dividers and build doors!
Chandlery / Re: Lewmar 40 CST Wavegrips
« Last post by Nereid on April 09, 2019, 02:07:29 PM »
Oooh if only had the spendable $$ :o :-X
Chandlery / Lewmar 40 CST Wavegrips
« Last post by P69 on April 09, 2019, 01:18:04 PM »
If anyone is looking for a pair of Lewmar 40 CST wavegrip  (predecessor to Oceans), here is a pair on ebay for a good price.  I don't know this dude, just came across the ad.

pair for $600
Pearson 365/367 Mechanic Shop / Re: 365 Velvet Drive Heat Exchanger ?
« Last post by ZULU40 on April 09, 2019, 07:44:30 AM »
well that sounds right I guess.
Thanks for adding where to hook it in
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