RE: [Cal_Boats] Speed unit - Try GPS (Nick)

Nick, from my view the GPS does not give you the fine points of how one "attacks" waves or modifies trim. I prefer the old Kenyons (no fancy interfaces and a 9V battery - again, I'm a Luddite) with 2 digits after the decimal and a very nice adjustable damping function that does not dance the numbers around. Improvement/changes in speed are immediately noted. Only place left to get them is a place called Miller Marine in Florida (as far as I know). I keep buying parts there to keep the old Kenyon alive. Cheers Charlie From: Ca… [at] yahoogroups.com [mailto:Ca… [at] yahoogroups.com] On Behalf Of ng… [at] comcast.net Sent: Wednesday, January 04, 2006 7:56 PM To: Ca… [at] yahoogroups.com Subject: Re: [Cal_Boats] Speed unit - Try GPS Hi, I hate it when I go on the other tack and it feels good, but the knotmeter says I am going slower. Insight into this would be to suggest you check the speed on GPS. It is speed over ground, which is more accurate anyway, with current, waves, etc. When motoring up the St Clair River into the mouth of Lake Huron the current down is about 6 knots, the meter says I am going 6 and the GPS says I am going 3. Just another reason to use GPS. Later, Nick 'Jade' Cal 9.2 -------------- Original message -------------- From: "tilleytom" <ti… [at] yahoo.com> Last year when "Lenochka" was hauled I replace the speed unit, including the paddle-wheel sending unit, with new Standard Horizon units. (Okay, next time I'll pick a company who it NOT getting out of the instrumentation business.) Now the speed unit works "intermittently" - usually not as I am leaving the dock or for about the first 3-4 miles, then it start working - most of the time. When I "troubleshoot" it - ie, the sending unit out and in my hand - blowing on the paddlewheel, the unit works with no problem. And I keep the boat pretty clean as well. Also - when first "splashed" after the boat job, the unit worked without problems. So - when I installed the new thru-hull housing, after I read the directions several times I kept co! ming to the part that said "if the housing is not being installed on the centerline of the boat, angle the housing slightly towards the bow of the boat to account for the flow of water over the hull." I am beginning the think that I may have pointed the unit a little too much towards the bow and that water flow is pushing the paddle wheel into too much side contact/friction and that is the reason is does not work consistently. Can anyone give me some validation or contradiction or other insight? Thanks in advance. TomT 1982 Cal 9.2 "Lenochka" Hull #52 San Mateo, CA SPONSORED LINKS Boating sailing <http://groups.yahoo.com/gads?t=ms&k=Boating+sailing&w1=Boating+sailing& w2=Sailing+boat&w3=Sailing&w4=Boating&c=4&s=65&.sig=KgsPLsahA8AB__qRyAt_ XQ> Sailing boat <http://groups.yahoo.com/gads?t=ms&k=Sailing+boat&w1=Boating+sailing&w2= Sailing+boat&w3=Sailing&w4=Boating&c=4&s=65&.sig=oZUJLnrR0FEbvZ5o13Ffaw> Sailing <http://groups.yahoo.com/gads?t=ms&k=Sailing&w1=Boating+sailing&w2=Saili ng+boat&w3=Sailing&w4=Boating&c=4&s=65&.sig=eGOXnwatS3x0LYN3XxVdNA> Boating <http://groups.yahoo.com/gads?t=ms&k=Boating&w1=Boating+sailing&w2=Saili ng+boat&w3=Sailing&w4=Boating&c=4&s=65&.sig=yMCAyUrqzhoqLD5Ydiy-Rg> YAHOO! GROUPS LINKS * Visit your group "Cal_Boats <http://groups.yahoo.com/group/Cal_Boats> " on the web. * To unsubscribe from this group, send an email to: Ca… [at] yahoogroups.com <mailto:Ca… [at] yahoogroups.com?subject=Unsubscribe> * Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service <http://docs.yahoo.com/info/terms/> .

I bought a new SignetMarine knotmeter and haven't had much opportunity to test it but it works so far. One point about leaving the impeller in is that, if you have a diver who cleans the bottom, the impeller may be getting dinged. Same holds true for haulout. In my Cal 34, the impeller location was sideways in the keel. That worked very well. Mike Kennedy Conquest Cal 40 # 96 On Jan 4, 2006, at 6:42 PM, Husar Charlie wrote: > Nick, from my view the GPS does not give you the fine points of how > one "attacks" waves or modifies trim. I prefer the old Kenyons (no > fancy interfaces and a 9V battery - again, I'm a Luddite) with 2 > digits after the decimal and a very nice adjustable damping > function that does not dance the numbers around. Improvement/ > changes in speed are immediately noted. Only place left to get > them is a place called Miller Marine in Florida (as far as I > know). I keep buying parts there to keep the old Kenyon alive. > > Cheers > Charlie > > From: Ca… [at] yahoogroups.com [mailto:Ca… [at] yahoogroups.com] > On Behalf Of ng… [at] comcast.net > Sent: Wednesday, January 04, 2006 7:56 PM > To: Ca… [at] yahoogroups.com > Subject: Re: [Cal_Boats] Speed unit - Try GPS > > Hi, I hate it when I go on the other tack and it feels good, but > the knotmeter says I am going slower. Insight into this would be to > suggest you check the speed on GPS. It is speed over ground, which > is more accurate anyway, with current, waves, etc. When motoring up > the St Clair River into the mouth of Lake Huron the current down is > about 6 knots, the meter says I am going 6 and the GPS says I am > going 3. Just another reason to use GPS. > Later, Nick 'Jade' Cal 9.2 > > -------------- Original message -------------- > From: "tilleytom" <ti… [at] yahoo.com> > Last year when "Lenochka" was hauled I replace the speed unit, > including the paddle-wheel sending unit, with new Standard Horizon > units. (Okay, next time I'll pick a company who it NOT getting out > of the instrumentation business.) > > Now the speed unit works "intermittently" - usually not as I am > leaving the dock or for about the first 3-4 miles, then it start > working - most of the time. When I "troubleshoot" it - ie, the > sending unit out and in my hand - blowing on the paddlewheel, the > unit works with no problem. And I keep the boat pretty clean as > well. Also - when first "splashed" after the boat job, the unit > worked without problems. > > So - when I installed the new thru-hull housing, after I read the > directions several times I kept co! ming to the part that said "if the > housing is not being installed on the centerline of the boat, angle > the housing slightly towards the bow of the boat to account for the > flow of water over the hull." > > I am beginning the think that I may have pointed the unit a little > too much towards the bow and that water flow is pushing the paddle > wheel into too much side contact/friction and that is the reason is > does not work consistently. > > Can anyone give me some validation or contradiction or other insight? > > Thanks in advance. > > TomT > 1982 Cal 9.2 "Lenochka" Hull #52 > San Mateo, CA > > > > > > SPONSORED LINKS > Boating sailing Sailing boat Sailing > Boating > > YAHOO! GROUPS LINKS > > Visit your group "Cal_Boats" on the web. > > To unsubscribe from this group, send an email to: > Ca… [at] yahoogroups.com > > Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. > >

Michael Kennedy wrote: > In my Cal 34, the impeller location was sideways in the keel. That > worked very well. > My other boat has an old mechanical Sumlog. The boat, a Seafarer Polaris by Tripp, Sr., is a keel/centerboarder with very shoal draft, and a quite flat bottom with hard bilges to give form stability. Basically, there is no place _except_ the keel sides to mount the impeller and have it in the water all the time, regardless of angle of heel. So I put it in the keel side. That keeps it in the water on a starboard tack, when the bottom of the boat on the stbd. side is mostly out of the water, but... ah, the "but." But the nature of keels on sailboats is that the water flow is not uniform on both tacks--angle of attack, lift, all those little things going on underwater. So my knotmeter/log gives a faster reading on one tach than on the other. It's really right-on on one tack, and too slow on the other, according to my GPS. If you want absolute accuracy, you're probably better off moving the impeller as far from the keel as possible (if it will stay underwater there). On the other hand, I use the device mostly for relative-speed checks, or to pat myself on the back for having such a speedy boat and for sailing her so well, so a little inaccuracy ain't so bad. If necessary for T/S/D calculations, I can add a bit to the slow-tacks speeds or distances to compensate. Chris Campbell

Same location on my CAL 25. Side of keel. Cheers Charlie From: Ca… [at] yahoogroups.com [mailto:Ca… [at] yahoogroups.com] On Behalf Of Michael Kennedy Sent: Thursday, January 05, 2006 10:13 AM To: Ca… [at] yahoogroups.com Subject: Re: [Cal_Boats] Speed unit - Try GPS (Nick) I bought a new SignetMarine knotmeter and haven't had much opportunity to test it but it works so far. One point about leaving the impeller in is that, if you have a diver who cleans the bottom, the impeller may be getting dinged. Same holds true for haulout. In my Cal 34, the impeller location was sideways in the keel. That worked very well. Mike Kennedy Conquest Cal 40 # 96 On Jan 4, 2006, at 6:42 PM, Husar Charlie wrote: Nick, from my view the GPS does not give you the fine points of how one "attacks" waves or modifies trim. I prefer the old Kenyons (no fancy interfaces and a 9V battery - again, I'm a Luddite) with 2 digits after the decimal and a very nice adjustable damping function that does not dance the numbers around. Improvement/changes in speed are immediately noted. Only place left to get them is a place called Miller Marine in Florida (as far as I know). I keep buying parts there to keep the old Kenyon alive. Cheers Charlie From: Ca… [at] yahoogroups.com [mailto:Ca… [at] yahoogroups.com] On Behalf Of ng… [at] comcast.net Sent: Wednesday, January 04, 2006 7:56 PM To: Ca… [at] yahoogroups.com Subject: Re: [Cal_Boats] Speed unit - Try GPS Hi, I hate it when I go on the other tack and it feels good, but the knotmeter says I am going slower. Insight into this would be to suggest you check the speed on GPS. It is speed over ground, which is more accurate anyway, with current, waves, etc. When motoring up the St Clair River into the mouth of Lake Huron the current down is about 6 knots, the meter says I am going 6 and the GPS says I am going 3. Just another reason to use GPS. Later, Nick 'Jade' Cal 9.2 -------------- Original message -------------- From: "tilleytom" <ti… [at] yahoo.com> Last year when "Lenochka" was hauled I replace the speed unit, including the paddle-wheel sending unit, with new Standard Horizon units. (Okay, next time I'll pick a company who it NOT getting out of the instrumentation business.) Now the speed unit works "intermittently" - usually not as I am leaving the dock or for about the first 3-4 miles, then it start working - most of the time. When I "troubleshoot" it - ie, the sending unit out and in my hand - blowing on the paddlewheel, the unit works with no problem. And I keep the boat pretty clean as well. Also - when first "splashed" after the boat job, the unit worked without problems. So - when I installed the new thru-hull housing, after I read the directions several times I kept co! ming to the part that said "if the housing is not being installed on the centerline of the boat, angle the housing slightly towards the bow of the boat to account for the flow of water over the hull." I am beginning the think that I may have pointed the unit a little too much towards the bow and that water flow is pushing the paddle wheel into too much side contact/friction and that is the reason is does not work consistently. Can anyone give me some validation or contradiction or other insight? Thanks in advance. TomT 1982 Cal 9.2 "Lenochka" Hull #52 San Mateo, CA SPONSORED LINKS Boating sailing <http://groups.yahoo.com/gads?t=ms&k=Boating+sailing&w1=Boating+sailing& w2=Sailing+boat&w3=Sailing&w4=Boating&c=4&s=65&.sig=KgsPLsahA8AB__qRyAt_ XQ> Sailing boat <http://groups.yahoo.com/gads?t=ms&k=Sailing+boat&w1=Boating+sailing&w2= Sailing+boat&w3=Sailing&w4=Boating&c=4&s=65&.sig=oZUJLnrR0FEbvZ5o13Ffaw> Sailing <http://groups.yahoo.com/gads?t=ms&k=Sailing&w1=Boating+sailing&w2=Saili ng+boat&w3=Sailing&w4=Boating&c=4&s=65&.sig=eGOXnwatS3x0LYN3XxVdNA> Boating <http://groups.yahoo.com/gads?t=ms&k=Boating&w1=Boating+sailing&w2=Saili ng+boat&w3=Sailing&w4=Boating&c=4&s=65&.sig=yMCAyUrqzhoqLD5Ydiy-Rg> YAHOO! GROUPS LINKS * Visit your group "Cal_Boats <http://groups.yahoo.com/group/Cal_Boats> " on the web. * To unsubscribe from this group, send an email to: Ca… [at] yahoogroups.com <mailto:Ca… [at] yahoogroups.com?subject=Unsubscribe> * Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service <http://docs.yahoo.com/info/terms/> . YAHOO! GROUPS LINKS * Visit your group "Cal_Boats <http://groups.yahoo.com/group/Cal_Boats> " on the web. * To unsubscribe from this group, send an email to: Ca… [at] yahoogroups.com <mailto:Ca… [at] yahoogroups.com?subject=Unsubscribe> * Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service <http://docs.yahoo.com/info/terms/> .

I wasn't racing the Cal 34 and the small variation caused by flow phenomena was not an issue. For racing, the midline position ahead of the keel is no doubt better. In the Choate 40, that was the location. The Cal 40 could put one there although it's a bit awkward. Since racing around the buoys is not in my future (such as it is) I'll leave it where it is. That is on the port side in the head. The boat had the old Signet switch for two impeller locations but they don't make them anymore. It had two impellers, one for each tack. I'm converting the stbd one to a thru-hull for the holding tank. My suggestion for those noticing a difference on opposite tacks would be to calibrate it with GPS. Sail one tack for a mile or two, checking the speed and then calculate the distance/ speed on time and GPS. Do the same on the other tack. You could do the same with other points of sail to check for flow differences. Fin commented that they spent a lot of time on stbd in last summer's Transpac so the port location is not as good as midline. Still, I think most fast sailing in Transpac will probably be on stbd so port is a little better for the impeller. If I stiffen the hull with carbon before going, maybe I'll get ambitious and move the impeller. That would be the time to do it. Rog's suggestion is to grind off a quarter inch of glass above and below the hull-keel junction and lay up some carbon fiber to stiffen the hull. That would come close to the impeller location. I noticed that someone had ground off a couple of the ribs that stiffen the junction to make the water tank fit in the bilge. That's another reason to think about reenforcing it when I do the bottom in 2007. Mike Kennedy Conquest cal 40 96 On Jan 6, 2006, at 4:11 AM, Husar Charlie wrote: > Same location on my CAL 25. Side of keel. > > Cheers > Charlie > > From: Ca… [at] yahoogroups.com [mailto:Ca… [at] yahoogroups.com] > On Behalf Of Michael Kennedy > Sent: Thursday, January 05, 2006 10:13 AM > To: Ca… [at] yahoogroups.com > Subject: Re: [Cal_Boats] Speed unit - Try GPS (Nick) > > I bought a new SignetMarine knotmeter and haven't had much > opportunity to test it but it works so far. One point about leaving > the impeller in is that, if you have a diver who cleans the bottom, > the impeller may be getting dinged. Same holds true for haulout. In > my Cal 34, the impeller location was sideways in the keel. That > worked very well. > > Mike Kennedy > Conquest Cal 40 # 96 > > > On Jan 4, 2006, at 6:42 PM, Husar Charlie wrote: > >> Nick, from my view the GPS does not give you the fine points of >> how one "attacks" waves or modifies trim. I prefer the old >> Kenyons (no fancy interfaces and a 9V battery - again, I'm a >> Luddite) with 2 digits after the decimal and a very nice >> adjustable damping function that does not dance the numbers >> around. Improvement/changes in speed are immediately noted. Only >> place left to get them is a place called Miller Marine in Florida >> (as far as I know). I keep buying parts there to keep the old >> Kenyon alive. >> >> Cheers >> Charlie >> >> From: Ca… [at] yahoogroups.com [mailto:Ca… [at] yahoogroups.com] >> On Behalf Of ng… [at] comcast.net >> Sent: Wednesday, January 04, 2006 7:56 PM >> To: Ca… [at] yahoogroups.com >> Subject: Re: [Cal_Boats] Speed unit - Try GPS >> >> Hi, I hate it when I go on the other tack and it feels good, but >> the knotmeter says I am going slower. Insight into this would be >> to suggest you check the speed on GPS. It is speed over ground, >> which is more accurate anyway, with current, waves, etc. When >> motoring up the St Clair River into the mouth of Lake Huron the >> current down is about 6 knots, the meter says I am going 6 and the >> GPS says I am going 3. Just another reason to use GPS. >> Later, Nick 'Jade' Cal 9.2 >> >> -------------- Original message -------------- >> From: "tilleytom" <ti… [at] yahoo.com> >> Last year when "Lenochka" was hauled I replace the speed unit, >> including the paddle-wheel sending unit, with new Standard Horizon >> units. (Okay, next time I'll pick a company who it NOT getting out >> of the instrumentation business.) >> >> Now the speed unit works "intermittently" - usually not as I am >> leaving the dock or for about the first 3-4 miles, then it start >> working - most of the time. When I "troubleshoot" it - ie, the >> sending unit out and in my hand - blowing on the paddlewheel, the >> unit works with no problem. And I keep the boat pretty clean as >> well. Also - when first "splashed" after the boat job, the unit >> worked without problems. >> >> So - when I installed the new thru-hull housing, after I read the >> directions several times I kept co! ming to the part that said "if >> the >> housing is not being installed on the centerline of the boat, angle >> the housing slightly towards the bow of the boat to account for the >> flow of water over the hull." >> >> I am beginning the think that I may have pointed the unit a little >> too much towards the bow and that water flow is pushing the paddle >> wheel into too much side contact/friction and that is the reason is >> does not work consistently. >> >> Can anyone give me some validation or contradiction or other insight? >> >> Thanks in advance. >> >> TomT >> 1982 Cal 9.2 "Lenochka" Hull #52 >> San Mateo, CA >> >> >> >> >> >> SPONSORED LINKS >> Boating sailing Sailing boat Sailing >> Boating >> >> YAHOO! GROUPS LINKS >> >> Visit your group "Cal_Boats" on the web. >> >> To unsubscribe from this group, send an email to: >> Ca… [at] yahoogroups.com >> >> Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. >> >> > > > YAHOO! GROUPS LINKS > > Visit your group "Cal_Boats" on the web. > > To unsubscribe from this group, send an email to: > Ca… [at] yahoogroups.com > > Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. > >