Yo "J Prop'rs"
We are currently running the two blade plastic prop on our CnC 29 as the
JProp is on the bench for disassembly and cleaning. You must use the
requisite grease in the JProp or it gets all gummed up and won't feather
easily. It also on occasion reverses settings and forward becomes
reverse and visa versa....I don't know why but our rigger fixes it. It
replaced the Martec which is supposed to be welded and refaced on
occasion, which no one informed us and as a result our welder suggested
we retire it and use it for a trophy of some kind. We bought the J Prop
as it was the only device that fits the C&C 29MkI and performance in
reverse was considerably improved, our prop is offset. Ken, notes that
is adjustable and we carefully monitored what other 29 owners were
trying, those that had Atomic 4's and followed their lead, saving
considerable time and effort. We all ended up using the offset of 5 for
the Atom4. We should note that distribution of this product has fallen
to US Beta Marine distributor with the unfortunate demise of the dealer
in Quebec, (it's an Italian product). We are keen to get it back in
operation as the plastic prop is designed for and is outstanding on the
A4, but the Cornell engineer that design it has passed away and nobody
was smart enough to pick it up and continue sales. Hit something and
you can't replace it.
The grease for the JProp is made in Canada by Shell for the maritime
fisheries trade. Unique
On 9/25/19 3:15 PM, Ken Heaton via CnC-List wrote:
Note that the "J Prop" is pitch adjustable while installed on the boat
so it can be fine tuned for pitch while it is installed.
Ken H.
On Wednesday, 25 September 2019, Ken Heaton <kenhea...@gmail.com
<mailto:kenhea...@gmail.com>> wrote:
> Hi Bruce,
>
> Our boat was built with a Universal diesel but was re-powered in
2001 by a previous Quebec City owner. He wanted more horse power to
fight the St. Lawrence River currents and tides so we now have a
Yanmar 3JH2-TBE diesel. This is a 47 hp. Turbo with a 3 blade
feathering "J Prop", prop made in Italy. Nice combination. Lots of
go, plenty of reverse. We're at about 1100 hrs. on this combination,
400 we put on ourselves over the last 10 years.
>
> I'd buy another J Prop if I needed one.
>
> Ken H.
>
> https://www.betamarinenc.com/j-prop/
>
>
https://ca.binnacle.com/p10220/J-Prop-Variable-Pitch-Propeller/product_info.html
>
> On Wednesday, 25 September 2019, Bruce Whitmore via CnC-List
<cnc-list@cnc-list.com <mailto:cnc-list@cnc-list.com>> wrote:
>> Hello all,
>> I know this has been discussed a lot on the board in the past, but
given the recent discussions of over-propping on the part of
flex-o-fold, I'd like to re-ask the question. The reason is that a
folding prop is definitely in my future, as we have a fixed 3 blade
prop on the boat now. We also sail in an area where crab pots are
extremely common from October through April. For that reason alone I
am leaning toward a folding prop. I also saw the rather well put
together article in which a test of folding and feather props was
performed - the one touted on flex-o-fold's website.
>> By the way, in exchanging emails with flex-o-fold, they are
recommending a 3 blade version, so if vibration is an issue with your
two blade prop, that may not apply to me.
>> With all these considerations in mind, when it comes to a
folding/feathering prop, what do you have, and why do you like it?
>> Looking forward to your insights,
>> Bruce Whitmore
>> 1994 C&C37/40+
>> "Astralis"
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_______________________________________________
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every one is greatly appreciated. If you want to support the list - use PayPal
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