Michael,
I had the original battenless Doyle Sails that I upgraded from. Against other R22s w/ the Doyle sail with a batten, this seems stiffer especially now that it has 6 years of heavy use on it. The difference on the old Doyle and new Doyle is the most significant change though.

Jay

> On Jul 19, 2020, at 10:31 PM, Mike Riter <mike at traildesign.com> wrote:
> 
> ?That's a really good looking sail Jay. Looking at the photo, I'm curious
> about a couple things. First, did you have a Doyle before having the
> Evolution made for your boat? And can you tell a noticable difference with
> the extra batten?
> 
> Michael Riter
> SV Emma B
> 
> 
> 
> 
>> On Sun, Jul 19, 2020 at 5:42 PM Jay Friedland <jayf401 at gmail.com> wrote:
>> 
>> Hi, Tom,
>> I opted to work with Evolution Sails in 2014, may be still in Easton, MD.,
>> Scott Gibbs was the contact. They were good to work with, and the design
>> was unique for our boat, straight leech, and 2 vertical battens, 1/4” round
>> fiberglass rods, roughly at thirds, see attached photo, if it doesn’t get
>> stripped away.
>> 
>> Although I had some tweaks (more cosmetic than design- extended UV cover,
>> tack line, R22 numbers, etc.) in the beginning, it’s performed flawlessly,
>> especially this past year with Stan’s new outhaul car. I went through 2
>> previous outhaul car designs over the last 6 years, which made it a little
>> difficult to reef and furl in. The angle of the boom is critical to it’s
>> compactness in the mast, and it’s original stiffness took a few weeks to
>> settle in.
>> 
>> Over the battenless version, I reef & furl on a port tack, although it goes
>> right in when in irons or light winds (6-8 kts.) on starboard tack. It’s
>> about the same size and was the same cost as the Doyle version, and about
>> the same area UV cover. It is much stiffer than the single batten. If you
>> ever in the Ocean County, NJ /Long Beach Island area, I go out at least 3-4
>> times a week, now with masks, so a test sail is always available.
>> 
>> Jay Friedland
>> S/V Wanderlust, ‘97
>> 
>> 
>> 
>> 
>> 
>> 
>> On Jul 19, 2020, at 4:30 PM, Jesse Shumaker <
>> jesse.laten.shumaker at gmail.com>
>> wrote:
>> 
>> Hi Tom,
>> 
>> The R22 IMF furls in the opposite direction as the illustration depicting
>> the Selden furling shown in the article.  There is a vertical batten that
>> is inserted into the UV resistant portion of the sail, which is the thick
>> colored section that sticks out when the sail is fully furled.  Forgoing
>> battens on the rest of the main seems to the price you pay in terms of
>> performance in exchange for the big benefits in terms of ease of using
>> IMF.  Horizontal battens are reserved for mains that hoist in the
>> traditional manner, or perhaps they could also be used on boom roller
>> furling, which seems to be less common than IMF.   I've not heard of anyone
>> else adding additional vertical battens and I'm not sure the mast would be
>> large enough to accommodate the extra size of a furled sail including
>> vertical battens.
>> 
>> I haven't yet sailed on a larger boat with IMF, but people who have used
>> those and then come on my R22 seem to be surprised about the ability to
>> raise and lower the entire system (boom and mainsail) with the pin going
>> through the gooseneck to the mast.  I suppose that's not an option on a
>> larger boat because of the extra weight.  It is nice to have a high boom
>> normally for plenty of room in the cockpit and to catch the most wind up
>> high, but then be able to lower it quickly in stronger conditions.
>> Lowering the center of effort reduces heeling.
>> 
>> Maybe Chris G. could provide some perspectives on IMF for the R22 vs. a
>> larger boat since he also has a Catalina 38(?) with IMF.
>> 
>> Jesse Shumaker
>> S/V Zephyr
>> 
>> On Sun, Jul 19, 2020 at 2:39 PM Tom Van Heule <
>> tom.vanheule at intrinsicprograms.com> wrote:
>> 
>> Hi, I came across this article today - and was searching in the archives
>> for any details - lots of talk on the IMF, but nothing explaining the
>> system (that I have found!).  Aside, Is anyone using battens? vertical or
>> horizontal?    Is the GBI system similar/different from the Selden
>> description?
>> https://www.sailmagazine.com/diy/how-to-a-trouble-free-furling-main
>> 
>> It was a nice read to hear some support for IMF in either case.
>> 
>> 
>> --
>> Tom Van Heule
>> Intrinsic Programs
>> tom.vanheule at intrinsicprograms.com
>> +1 303 525 5266
>> -------------- next part --------------
>> A non-text attachment was scrubbed...
>> Name: R22.Vertical Battens.2017-10-04.jpg
>> Type: image/jpeg
>> Size: 2333129 bytes
>> Desc: not available
>> URL: <
>> http://rhodes22.org/pipermail/rhodes22-list/attachments/20200719/7ed8ab90/attachment.jpg
>>> 
>>