That's true, for me, anyway! :-) ----- John Tyner M-15 #412 "Chimpanzee" On 2/9/2016 1:33 AM, Jazzy wrote:
You guys aren't right in the head.
Jazz On Feb 8, 2016 7:09 PM, "Keith R. Martin" <keith.richard.martin@gmail.com> wrote:
Electrical actually, but with my fair share of mechanical stuff throughout my career...
*Keith R. Martin, P.Eng.*
*Burnaby, B.C. CanadaSerenity,** M17 Hull #353*
On 8 February 2016 at 19:05, John Tyner <tynerjr@md.metrocast.net> wrote:
3x? Must be a civil, and not an aerospace, engineer! :-) ----- John Tyner M-15 # 412 "Chimpanzee"
On 2/8/2016 9:53 PM, Keith R. Martin wrote:
Hi John,
I chose stainless to get the desired strength in a given std dimension and wall thickness from metal supermarkets. This helped with one of the key "features" I wanted which was the ability a 5 inch "floating span" to move my spinnaker sheave forward by 4-5 inches to provide clearance for my top down furler.
To be fair I found a thicker aluminium stock that probably would have done the trick except for the fact that I couldn't get it to pass the std 3x design hurdle all us engineers are so fond of :)
In the end the the final unit is not very heavy ..
Keith
*Keith R. Martin, P.Eng.*
*Burnaby, B.C. CanadaSerenity,** M17 Hull #353*
On 8 February 2016 at 14:38, John Schinnerer <john@eco-living.net> wrote: Keith,
Is there a reason you used stainless instead of aluminum? Any reason to not consider aluminum stock for something like this as well?
thanks, John S.
On 02/08/2016 08:20 AM, Keith R. Martin wrote:
Thanks Connie, I am quite happy with how it turned out..
Keith
Keith R. Martin, P.Eng. Burnaby, BC, Canada Serenity M17, Hull #353 On Feb 7, 2016 5:56 AM, "Conbert Benneck" <chbenneck@gmail.com> wrote: On 2/6/2016 4:50 PM, Keith R. Martin wrote:
> Keith, > > Congratulations. That's an elegant solution to the problem. You have > all > the benefits of nav lights, VHF antenna, and your sheave in one neat, > easily removable package. > > Connie > > John brings up a good point about having "stuff" on the top of a > trailer > >> sailor mast... >> >> I too was worried about that when trailering the boat but I was >> reluctant >> to trade off the visibility provided by mast mounted lighting ... >> >> However when combined with my other "wants", including a mast mounted >> VHF >> antenna in support of my penchant for sailing "off the beaten track", >> and >> 4-5 inches of forward separation between my furling jib & spinnaker >> sheave >> used by my top down asym furler, my solution was to fab up a removable >> mast >> head assembly that could be easily removed when trailering. >> >> Attached is a picture of my mast head cap. >> >> Constructed out of standard square stainless tubing and a small peace >> of >> teak, it provides a mounting arrangement for the tri-colour, all round >> white, VHF antenna , windex, and extended spinnaker sheave... >> It slides firmly over top of the existing bare masthead, has a flat 4 >> power >> connector for the lights and the standard stainless RF connector of >> the >> antenna, it is secured with two 1/4" stainless rigging pins... >> >> It takes just a couple of minutes to install or remove... >> >> >> Keith >> >> >> *Keith R. Martin, P.Eng.* >> >> *Burnaby, B.C. CanadaSerenity,** M17 Hull #353* >> >> >> >> On 6 February 2016 at 13:44, John Schinnerer <john@eco-living.net> >> wrote: >> >> Yeah, I have the normal deck nav lights - split green/red bow, white >> >> stern. So I am covered when under sail at night. >>> But if I want to motor at night I also need either a forward facing >>> 225 >>> deg. white light ("steaming" light) plus stern light, or, an >>> all-around >>> white light. >>> For anchoring, also an all-around white light. >>> >>> So I'm thinking the all-around white covers both anchor and steaming. >>> But >>> yeah, I'd rather not add fragile stuff to the top of the mast on a >>> trailer >>> sailor. And wiring in the mast. >>> >>> But neither anchor nor steaming light needs to be on top of mast. >>> Just >>> needs to be visible 360 degrees, and there's something about the >>> steaming >>> light is supposed to be a meter or more above the green/red lights. >>> So >>> a >>> clamp-on LED 360 deg. light would probably cover it. >>> >>> Agree about the night sailing...it is an awesome experience. Most >>> I've >>> done of it was in Hilo bay on a Corsair 31 tri. Nothing like >>> whooshing >>> along at low-heel multihull speeds in the tropical moonlight! >>> Many many years ago, got to do a night passage in the archipelago >>> around >>> Stockholm, Sweden. In a pre-WWII classic wooden "archipelago cruiser" >>> sailboat, no less. It's quite the navigation experience, sailing >>> those >>> channels in the dark, setting course via multiple lights' visible >>> angles, >>> colors, and frequencies. >>> >>> cheers, >>> John S. >>> >>> On 02/05/2016 07:40 PM, Thomas Buzzi wrote: >>> >>> John, >>> >>> I had considered the all around white light combined with the 135 >>>> stern >>>> light plus the red and green but it added almost a foot to the top >>>> of >>>> the >>>> mast plus I already had the wiring roughed in for the deck nav. >>>> lights >>>> from >>>> the factory so I went that way. You are correct and I am glad the >>>> stern >>>> light is only 135degrees. Less chance of light bleed into the >>>> cockpit >>>> at >>>> night.I plan to do night sailing as I have done with all my boats. >>>> Nothing >>>> like being out there for a full moon and watch it rise above the >>>> waves. >>>> Not >>>> to mention the phosphorescence you can stir up with your wake. >>>> Really >>>> beautiful time to go out. No hot sun either. >>>> fair winds, >>>> Tom B >>>> <https://www.avast.com/sig-email> This email has been sent from a >>>> virus-free computer protected by Avast. >>>> www.avast.com <https://www.avast.com/sig-email> >>>> <#DDB4FAA8-2DD7-40BB-A1B8-4E2AA1F9FDF2> >>>> >>>> On Fri, Feb 5, 2016 at 7:12 PM, John Schinnerer < >>>> john@eco-living.net> >>>> wrote: >>>> >>>> The dome-top perko stern lights look at a glance like they are 180 >>>> >>>> degrees, but I'm pretty sure they are 135, the specified visible >>>> angle >>>> >>>>> for >>>>> a stern light per USCG rules. Mine is something less than 180 >>>>> anyhow. I >>>>> can >>>>> tell just by looking at the arc vs. the whole circle, plus if I >>>>> sight >>>>> across the edges of the vertical opening, the bulb is nearly or >>>>> completely >>>>> hidden. If it were 180 I would see half the bulb. >>>>> >>>>> Given the mounting location (on slope of coaming at rear of >>>>> cockpit) >>>>> and >>>>> 135 degree visible angle, the cockpit (certainly the forward 3/4 of >>>>> it) >>>>> would be shielded from the bulb due to location and angle, I >>>>> think...I'll >>>>> check when I get a battery in her. >>>>> >>>>> Kevin's configuration is nifty and legal...but more wiring in the >>>>> mast. >>>>> I'm wanting to avoid having to bother wiring inside the mast and >>>>> through >>>>> the deck. But if I'm ever going to motor at night "legally," I will >>>>> need >>>>> to >>>>> - for all-around white, or, 225 degree "steaming" light. Or, have >>>>> an >>>>> all-around white light mounted down low where it will mess with >>>>> night >>>>> vision. >>>>> >>>>> The all-around white would do for both under power and anchor >>>>> light, >>>>> so >>>>> I'm leaning towards that.. >>>>> >>>>> cheers, >>>>> John S. >>>>> >>>>> On 02/05/2016 01:51 PM, Thomas Buzzi wrote: >>>>> >>>>> Good idea. I am concerned about using that 180 point stern light >>>>> and >>>>> >>>>> preserving night vision. The newer montys have the stern light >>>>> flush >>>>> >>>>>> mounted on the transom so no light finds its way across the >>>>>> cockpit. >>>>>> <https://www.avast.com/sig-email> This email has been sent from a >>>>>> virus-free computer protected by Avast. >>>>>> www.avast.com <https://www.avast.com/sig-email> >>>>>> <#DDB4FAA8-2DD7-40BB-A1B8-4E2AA1F9FDF2> >>>>>> >>>>>> On Fri, Feb 5, 2016 at 2:45 PM, Keith R. Martin < >>>>>> keith.richard.martin@gmail.com> wrote: >>>>>> >>>>>> Interesting discussion on stern lights..... >>>>>> >>>>>> In my case I chose to have a mast mounted tri-colour and an all >>>>>> round >>>>>> >>>>>> white, as well as side mounted nav lights on each side of the Bow. >>>>>>> So when sailing just the typical tri-colour up top, but when >>>>>>> under >>>>>>> power >>>>>>> my >>>>>>> lights are configured with the all white up top and the side >>>>>>> mounted >>>>>>> nav >>>>>>> lights lit up, allowing me to avoid placement of an actual stern >>>>>>> light >>>>>>> at >>>>>>> cockpit level. >>>>>>> >>>>>>> Is anyone else using this configuration?? >>>>>>> >>>>>>> >>>>>>> >>>>>>> *Keith R. Martin, P.Eng.* >>>>>>> >>>>>>> *Burnaby, B.C. CanadaSerenity,** M17 Hull #353* >>>>>>> >>>>>>> >>>>>>> >>>>>>> On 4 February 2016 at 19:41, John Schinnerer < >>>>>>> john@eco-living.net> >>>>>>> wrote: >>>>>>> >>>>>>> On 02/04/2016 09:09 AM, Thomas Buzzi wrote: >>>>>>> >>>>>>> ... Also very handy for dealing with the aft running lite or when >>>>>>> adding wiring for an auto helm. >>>>>>>> >>>>>>>>> Speaking of stern light - my M17 has the standard Perko dome >>>>>>>>> style >>>>>>>>> >>>>>>>>> light >>>>>>>>> >>>>>>>> installed on the downward slope of the port side coaming where >>>>>>>> it >>>>>>>> drops >>>>>>>> down to the transom. >>>>>>>> But it was just mounted flat on the slope, meaning it's tilted >>>>>>>> quite >>>>>>>> steeply. The solid part of the dome blocks a lot of the light >>>>>>>> astern >>>>>>>> (problematic, for a stern light!). >>>>>>>> >>>>>>>> Some of the pictures shared recently about other things (like >>>>>>>> rudders) >>>>>>>> included a view of same light in same place, but with a nice >>>>>>>> wood >>>>>>>> wedge >>>>>>>> under the light so it sits level with respect to the horizon. >>>>>>>> >>>>>>>> For those who have something like that for their stern light - >>>>>>>> was >>>>>>>> it >>>>>>>> something you bought, or did you make it or have it made, >>>>>>>> one-off? >>>>>>>> >>>>>>>> I want to level my light in same way so wondering if there's >>>>>>>> something >>>>>>>> ready-made or I'll need to make it. >>>>>>>> >>>>>>>> thanks, >>>>>>>> John S. >>>>>>>> >>>>>>>> >>>>>>>> -- >>>>>>>> John Schinnerer - M.A., Whole Systems Design >>>>>>>> -------------------------------------------- >>>>>>>> - Eco-Living - >>>>>>>> Whole Systems Design Services >>>>>>>> People - Place - Learning - Integration >>>>>>>> john@eco-living.net - 510.982.1334 >>>>>>>> http://eco-living.net >>>>>>>> http://sociocracyconsulting.com >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> -- >>>>>>>> >>>>>>>> John Schinnerer - M.A., Whole Systems Design >>>>>> -------------------------------------------- >>>>> - Eco-Living - >>>>> Whole Systems Design Services >>>>> People - Place - Learning - Integration >>>>> john@eco-living.net - 510.982.1334 >>>>> http://eco-living.net >>>>> http://sociocracyconsulting.com >>>>> >>>>> >>>>> >>>>> -- >>>>> >>>>> John Schinnerer - M.A., Whole Systems Design >>> -------------------------------------------- >>> - Eco-Living - >>> Whole Systems Design Services >>> People - Place - Learning - Integration >>> john@eco-living.net - 510.982.1334 >>> http://eco-living.net >>> http://sociocracyconsulting.com >>> >>> >>> >>> >>> > -- John Schinnerer - M.A., Whole Systems Design
- Eco-Living - Whole Systems Design Services People - Place - Learning - Integration john@eco-living.net - 510.982.1334 http://eco-living.net http://sociocracyconsulting.com