Does anyone know if there is an established Portsmouth Yardstick handicap for the M15 (and/or 17) flying a spinnaker? In the Delta Dinghy Ditch race this weekend, there should be a few M boats including mine, and the race coordinator pointed out that in the past they had been (incorrectly) using the same non-spinnaker rating for M boat with and without spinnakers. He said if our community has a standard we agree on we could use that, otherwise we'll probably have to race in the 'cruiser class' which is handicap free. Sincerely, Tyler Backman '81 M15 #157
Tyler- Portsmouth gives a multiplier of 1.5% for a spinnaker, but this is for a triangular course. Since an average boat spends about 50% of it's time going upwind, when the chute can't be carried, that leaves 50% for the time under the chute. Since the ditch race is all downwind, it would be fair to call this a 3% addition instead of 1.5. Adding 3% to the basic rating for the 15 would make it 104.76, according to my math, but it's 12:30 and I'm on my way to bed, so best to check. The regular rating for an M-17 is 104, and 101.7 for the tall rig, and 100.7 for the Sage. The Sage 15 has not been rated to my knowledge, but I'd guess somewhere around 1-6 would be fair. The Sage 15 sloop with two people and the SageCat with one are about a tossup in my limited experience. -----Original Message----- From: casioqv@usermail.com Sent: Monday, August 06, 2018 5:24 PM To: For and about Montgomery Sailboats Subject: M_Boats: M15 and M17 Spinnaker handicap Does anyone know if there is an established Portsmouth Yardstick handicap for the M15 (and/or 17) flying a spinnaker? In the Delta Dinghy Ditch race this weekend, there should be a few M boats including mine, and the race coordinator pointed out that in the past they had been (incorrectly) using the same non-spinnaker rating for M boat with and without spinnakers. He said if our community has a standard we agree on we could use that, otherwise we'll probably have to race in the 'cruiser class' which is handicap free. Sincerely, Tyler Backman '81 M15 #157
My excuse is that I'm o n my way to bed- I forgot to mention that the basic rating for an M-15 is 108, and I meant that my suggested rating for the sage 15 is 106, NOT 1-6 -----Original Message----- From: jerry@jerrymontgomery.org Sent: Tuesday, August 07, 2018 12:34 AM To: For and about Montgomery Sailboats Subject: Re: M_Boats: M15 and M17 Spinnaker handicap Tyler- Portsmouth gives a multiplier of 1.5% for a spinnaker, but this is for a triangular course. Since an average boat spends about 50% of it's time going upwind, when the chute can't be carried, that leaves 50% for the time under the chute. Since the ditch race is all downwind, it would be fair to call this a 3% addition instead of 1.5. Adding 3% to the basic rating for the 15 would make it 104.76, according to my math, but it's 12:30 and I'm on my way to bed, so best to check. The regular rating for an M-17 is 104, and 101.7 for the tall rig, and 100.7 for the Sage. The Sage 15 has not been rated to my knowledge, but I'd guess somewhere around 1-6 would be fair. The Sage 15 sloop with two people and the SageCat with one are about a tossup in my limited experience. -----Original Message----- From: casioqv@usermail.com Sent: Monday, August 06, 2018 5:24 PM To: For and about Montgomery Sailboats Subject: M_Boats: M15 and M17 Spinnaker handicap Does anyone know if there is an established Portsmouth Yardstick handicap for the M15 (and/or 17) flying a spinnaker? In the Delta Dinghy Ditch race this weekend, there should be a few M boats including mine, and the race coordinator pointed out that in the past they had been (incorrectly) using the same non-spinnaker rating for M boat with and without spinnakers. He said if our community has a standard we agree on we could use that, otherwise we'll probably have to race in the 'cruiser class' which is handicap free. Sincerely, Tyler Backman '81 M15 #157
Thank you Jerry! Per my math, this means multiplying the handicap by 1/1.03=0.9708. So we get the following downwind only spinnaker handicaps for the M15 and M17: Montgomery 15 108.20*0.9708=105.04 Montgomery 17 standard rig 104.00*0.9708=100.96 (above baselines from the US Sailing 2017 pre-calculated classes online PDF). Sincerely, Tyler ----- Original Message ----- From: "jerry" <jerry@jerrymontgomery.org> To: "For and about Montgomery Sailboats" <montgomery_boats@mailman.xmission.com> Sent: Tuesday, August 7, 2018 12:34:21 AM Subject: Re: M_Boats: M15 and M17 Spinnaker handicap Tyler- Portsmouth gives a multiplier of 1.5% for a spinnaker, but this is for a triangular course. Since an average boat spends about 50% of it's time going upwind, when the chute can't be carried, that leaves 50% for the time under the chute. Since the ditch race is all downwind, it would be fair to call this a 3% addition instead of 1.5. Adding 3% to the basic rating for the 15 would make it 104.76, according to my math, but it's 12:30 and I'm on my way to bed, so best to check. The regular rating for an M-17 is 104, and 101.7 for the tall rig, and 100.7 for the Sage. The Sage 15 has not been rated to my knowledge, but I'd guess somewhere around 1-6 would be fair. The Sage 15 sloop with two people and the SageCat with one are about a tossup in my limited experience. -----Original Message----- From: casioqv@usermail.com Sent: Monday, August 06, 2018 5:24 PM To: For and about Montgomery Sailboats Subject: M_Boats: M15 and M17 Spinnaker handicap Does anyone know if there is an established Portsmouth Yardstick handicap for the M15 (and/or 17) flying a spinnaker? In the Delta Dinghy Ditch race this weekend, there should be a few M boats including mine, and the race coordinator pointed out that in the past they had been (incorrectly) using the same non-spinnaker rating for M boat with and without spinnakers. He said if our community has a standard we agree on we could use that, otherwise we'll probably have to race in the 'cruiser class' which is handicap free. Sincerely, Tyler Backman '81 M15 #157
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