March 2012 - montgomery_boats - mailman.xmission.com

sailplans for Monty 15
by Karen and Smiley 02 Apr '12

02 Apr '12

Last year after my used purchase of M 15 #616 I sent my old sails to Dr Judy B and she measured them, she made me a new set of Hyde sails which are just superb. For insurance sake I went ahead and bought a new Potter 15 jib to use as insurance as a storm jib. I had done something similar for my Precision 21 and probably used that storm jib twice if my memory serves me right so the storm jib to me was plan B and nothing else. Got two reef points on the main sail. Judy B knows her stuff and she'd get my vote as the new old kid on the block cutting sails for Monties. New crisp well cut sails make any sailboat hummmm, I won't sail without a good well made suit of canvas..thanks Judy B J Smiley, Another Wrinkle M15 #616 magoo252(a)comcast.net

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motors
by Tom Jenkins 31 Mar '12

31 Mar '12

It seems as if my back no longer likes lifting a 50 lb Honda 5 from the car to the transom of my M17. Has anyone out there used an air-cooled Honda 2 hp 4 stroke with success on such a boat? If so, what kinds of speeds can you cruise a few miles at, and what is the approximate fuel consumption at speed? I certainly don't want to run more motor than I have to. (Dave Scobie, I think you ran a small motor on Air Born in the San Juans, but I can't remember the details.) Thanks a bunch,) Tom Jenkins M17 Scintilla

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Sail Measurements Confusion
by Jeffrey Johnston 31 Mar '12

31 Mar '12

I am attempting to measure my M15 to determine if it is "standard" sail measurements or not. I already have determined that it is a bit different than some specifications given for mast length: my mast length appears to be 19'2" (Hull 176 - 1981). My confusion lies in the "I" measurement. Some measuring guides tell me to measure from the jib halyard block down to the deck (the cabin top). Another says to measure down to the deck sheer line (as if there were no cabin). Not sure how one would get that number in an attempt to guesstimate where that sheer line would be on our 15's. Which of these is the correct "I" measurement for a sail loft when having sails made? Jeff PS - It appears that I may never run out of questions for this group. Thankful that this group is so patient and helpful. *Jeff+* Molōn labe!

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Re: M_Boats: M17 Storm Sails
by W David Scobie 30 Mar '12

30 Mar '12

first time i read judy's post i got confused for a second and thought ... WOW that reads like a lot of sail on an M15. a second reading i saw that there is a 'boat being discussed' change between the first and second paragraphs. i use the word 'about' as each loft will cut the sail just a bit differently. M15 has about 122 sq.ft. of sail in the 'working' configuration (full main and 128% jib). a jerry M17 has about 151 sq.ft. based on judy's report (or 154 sq ft on jerry's brochure) in 'working' configuration (full main and 100% jib) remember that the M15 is really 'powered' by the main. put two reefs in the main before going to a storm jib. don't luff the main on the M15 ... she doesn't handle this well because of her lack of a backstay. it is no fun doing a headsail change on an M15 when the seas and wind have increased. keep in mind before leaving the dock and you 'think' you may need the storm jib. best to go out and change to a larger jib in seas and wind that are decreasing. the M15 will sail well with a double reefed main and a 128% jib just above 20kts of wind. in my opinion the M15 will not sail well to weather under jib or main alone ... you need both sails pulling! :: Dave Scobie :: former M15 owner - www.freewebs.com/m15-named-scred :: M17 #375 SWEET PEA - www.m17-375.webs.com :: Sage Marine - www.sagemarine.com --- On Thu, 3/29/12, Judith Blumhorst, DC <drjudyb(a)blumhorst.com> wrote: > > Nope. The 128% goes on the M15, > Jerry's rig dimensions and sailplan works out to 151 square > feet with a (theoretical) 100% jib. His plans for the M17 > show: > > 170% with a luff of 22.42 (about 95-ish percent of max > forestay length) > 150% with a luff of 22.42' (the luff would have to be a > little shorter for use on a roller furler.) > 109% with a luff of 21.5' > 80% with a luff of 19.25' > 60% with a luff of 12' > > However, Bob Eeg has given me slightly different dimensions > for his M17 rig so the sails are dimensioned ever so > slightly differently. Bob's changes to the rig works > means it pencils out at 148 sf. The most significant > difference is that his OEM 109% jibs are about a foot > shorter on the luff. > > > Judy Blumhorst > Hyde Sails of Northern California > www.judybsails.com > judy(a)judybsails.com > > > cell: 925.208.1692 > fax: 925.820.2327 > skype: judith.blumhorst > www.HydeSails.com/NorthAmerica > > > > > ________________________________ > From: Jeffrey Johnston <frjeff(a)gmail.com> > Sent: Thursday, March 29, 2012 5:43 PM > > Is the storm jib the 80%? And the "working jib" the 128%? > > Jeff >

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Foresail Size??
by Jeffrey Johnston 30 Mar '12

30 Mar '12

If I'm to order new main and jib for my Monty 15 (which I'm likely to do soon): What size range (100%, 110%, 120%, etc) jib makes the most sense. I believe the boat came standard with a 100%. I can only afford one jib at present. My sailing will be primarily near shore Great Lakes (Lake Huron, Tawas Bay, North Channel, Georgian Bay) and smaller inland lakes. I'm guessing my winds typically to be 5-18 MPH. My main will have two reefs. Thanks for any and all advice. *Jeff+* Molōn labe!

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be aware if you have M 15 and are getting a new jib
by Flickasf 30 Mar '12

30 Mar '12

Note: if you are getting a new jib made for a M 15 be aware that the forestays on the earlier boats, perhaps all of Jerry's, have a slightly shorter forestay. I had Pettison make one for me using the measurements from Bob's new 15's (I ordered the sail in 2010) and it had to be shortened. Bert Felton

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M15
by jerry montgomery 29 Mar '12

29 Mar '12

Maybe that's why the little booger's so fast! jerry -- I am using the free version of SPAMfighter. We are a community of 7 million users fighting spam. SPAMfighter has removed 6334 of my spam emails to date. Get the free SPAMfighter here: http://www.spamfighter.com/len The Professional version does not have this message

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Re: M_Boats: motors
by W David Scobie 29 Mar '12

29 Mar '12

tom: many recent reports of folks with Honda 2 motors on M17. you may go a bit slower motoring into a sea/wind. as you have the moveable mount maybe the yamaha 2.5? only available in a short shaft. Rick & Debora Everett use a yamaha 2.5 on their M17. i never recommend trailering with the motor on the transom. the shock loads that our boats experience doing down the road are nothing like what they experience on the water. the motor is about 6' aft of the axle and when the boat hits a bump the 'pounce' moving up/down/sideways is amplified with a significant acceleration and change in vector. think of all those California potholes!! i know some people do trailer with the motor on the boat ... but i believe they are asking for trouble. i _may_ have one exception - a original design M17 (cutout transom) with the motor attached as jerry/lyle designed (ie, NOT on an aftermarket motor mount) is likely OK as the motor is more 'attached' to the boat than on the motor mounts we currently use. the other reason is think of how your are shocking the motor going through the acceleration loads and vector changes 'up there and back there' when you hit a bump at highway speed. this type of treatment isn't good for valves, camshaft and the 100 other small parts of the motor. :: Dave Scobie :: Sage Marine - www.sagemarine.com --- On Wed, 3/28/12, Tom Jenkins <tjenk(a)gte.net> wrote: > > It seems as if my back no longer > likes lifting a 50 lb Honda 5 from the car to the transom of > my M17. Has anyone out there used an air-cooled Honda > 2 hp 4 stroke with success on such a boat? If so, what > kinds of speeds can you cruise a few miles at, and what is > the approximate fuel consumption at speed? I certainly > don't want to run more motor than I have to. (Dave > Scobie, I think you ran a small motor on Air Born in the San > Juans, but I can't remember the details.) > Thanks a bunch,) > > Tom Jenkins > M17 Scintilla >

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Re: M_Boats: Mast clearance
by GILASAILR＠aol.com 28 Mar '12

28 Mar '12

Joe, I am no expert - But I believe the figure is correct for the early model boats (pear shaped section with swinging spreaders). Remember there is a fair amount of hardware on the extrusion so it seems heavier, - halyards,cleats, masthead fitting and sheaves, etc. I have an 'aftermarket' mast on my boat - a section similar to the one used on the Sage (mine is a bit larger 4.0 X 2.6 ") and it weighs 1.16#/ft. (much stiffer than the original M-17 section IMHO) Hope that sheds a bit of light - Jerry will chime in if we stray from the 'truth'. Good Luck, GO my advice is 'make it tall'

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Re: M_Boats: Mast clearance
by GILASAILR＠aol.com 28 Mar '12

28 Mar '12

Quick guy that JM - and heavier than I thought you said! The mast that is - Drew up the new chainplates and inner ones for the tie rods this afternoon - will have them cut tomorrow. Typical me overkill - no 'squish' in my deck/rig in a puff - just wire as low as it will go in the boat?? GO

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