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Post by lynnardm on Mar 2, 2023 3:43:12 GMT
Stu
That’s exciting. I expect you will be pleased. Keep us informed.
I keep my 4 blade prop for backup. But hopefully I won’t need it :,)
Capt’n Lynn
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Post by lynnardm on Mar 2, 2023 16:04:02 GMT
I was interviewed by a writer and the owner of boattest.com several weeks ago about my Sharrow propeller experience. They wrote an article for publishing and were happy with it and expected it to be published shortly. I finally reached out to the author and asked if it was published. It was not. His response included the following.
“I am so sorry, but since the performance improvement from your previous propeller was not that great, they decided not to run the article.”
It’s unfortunate. Given all the benefits I got and how much I liked the propeller it’s surprising they didn’t publish it. Is Sharrow cherry picking their test results and only publicizing the best? It raises suspicion that they may be using owners boats that are not propped as good as they should be to begin with, then comparing that to custom Sharrow props that are propped correctly for the boat and engine(s). In these tests that I've seen published Ive wondered if the overall blade surface area (as the boats were initially propped) was adequate for the boats weight. They may have experienced improved performance going to a conventional 4 blade propeller(s) like I did. You would think that before they (Sharrow Management) asked boat test to interview me for an article they’d know what to expect.
Capt’n Lynn
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Post by stuwright on Mar 5, 2023 17:22:03 GMT
I was interviewed by a writer and the owner of boattest.com several weeks ago about my Sharrow propeller experience. They wrote an article for publishing and were happy with it and expected it to be published shortly. I finally reached out to the author and asked if it was published. It was not. His response included the following. “I am so sorry, but since the performance improvement from your previous propeller was not that great, they decided not to run the article.” It’s unfortunate. Given all the benefits I got and how much I liked the propeller it’s surprising they didn’t publish it. Is Sharrow cherry picking their test results and only publicizing the best? It raises suspicion that they may be using owners boats that are not propped as good as they should be to begin with, then comparing that to custom Sharrow props that are propped correctly for the boat and engine(s). In these tests that I've seen published Ive wondered if the overall blade surface area (as the boats were initially propped) was adequate for the boats weight. They may have experienced improved performance going to a conventional 4 blade propeller(s) like I did. You would think that before they (Sharrow Management) asked boat test to interview me for an article they’d know what to expect. Capt’n Lynn That is very interesting and I can only keep my fingers crossed it will be a big improvement. I am not expecting a 30% improvement in fuel use and would be happy with 15%+ which still adds up. The main things for me are the reduction in noise/vibration that comes with lower cruising rpms and better reverse thrust to compliment the Helm Master EX kit.
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Post by stuwright on Apr 20, 2023 17:23:00 GMT
At the weekend I installed the Sharrow props but sadly the rubber inserts were not tight enough and there was excess play even after getting to the correct torque setting.
I have contacted Sharrow who immediately said they would swap out the props and pre fit the inserts to make sure there were no issues. They even said I could keep the new flat trim tab anodes and new ones would come in the pack. A good response although I now won't be able to get them installed before I get put back in the water.
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Post by sapient on Apr 23, 2023 6:07:04 GMT
I have been using my 895 Sports (Marlin) with Helm Master EX for one year in various weather, wind and current conditions here in Seattle (mostly on Lake Washington).
With the dual 250 HP Yamaha V6 outboard engines, the forward and backward movement by Helm Master EX is excellent. The Helm Master EX was calibrated perfected to the Yamaha engines and props. I never have to switch to the highest booster level (from 1-5) to get the boat to dock properly in some challenging weather conditions.
The only known and common issue with Joystick for large windage boat is side movement when the bow and stern are not moving in perfect parallel. This can be compensated by the bow thruster on the 895.
Just my two cents
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Post by thehammer on Apr 28, 2023 21:40:50 GMT
not to highjack the tread; but what was the extra cost on you boat for the full HMEX? My dealer in europe could not supply this when I got my boat in -21. Could not event get a quote for me.
The Yamaha importer sayed the HMEX would not work on the boat since the engines were so close. I kind a new it was just an excuse since they could not get the parts, and also sell so few here that they did not want to train the technicans.
Anyway, good to hear that it works good on your boat.
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Post by sapient on Apr 29, 2023 3:58:15 GMT
“The engines are too close” was a common excuse when the sales folks don’t want to really learn new stuff or don’t really understand the physics on how these job stick systems work. Before Yamaha jumped on this opportunity, a few other vendor(s) has build proof of concept retrofitted quite a few Jeanneau models with 3rd party joy stick systems.
My US model 895 Sports for a fully installed Helm Master EX is about 25K USD. That’s the price I was quoted in 2021 and paid in 2022 when took delivery of the boat. It did NOT include the active trim which can be purchased separately as a software upgrade.
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Post by stuwright on May 6, 2023 6:52:13 GMT
Finally my Sharrow props are being replaced with confirmed delivery on Tuesday. The factory confirmed they have pre fitted the centre shock absorbers to be sure they are correct. All the parts for the HMEX are here and the Yamaha dealer are starting the install on Tuesday, which is great because I can drop the Sharrow props off when they arrive. Having such good efficiency in reverse the Yamaha dealer is confident they will make the HMEX kit perform better. The kit is £22k fitted which includes auto trim. It wasn’t an option with an additional cost here but to be honest I’m not sure if needed because I have automatic Zipwake fitted. My dealer has experience fitting them and said they work well when set up correctly. I agree a lot of dealers are not interested due to the cost and complexity, having had 3 dealers state they would look into it to quote and didn’t even reply. My dealer just finished rectifying issues on a 1095 install including on the water and got everything working correctly. I am realistic though and doubt in bad tide and wind it will work great. However like mentioned thrusters can be used to assist and I have a hand held remote to help keep it pinned to the pontoon for the rare occasion I’m on my own.
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Post by lynnardm on Jul 19, 2023 22:33:05 GMT
Stu
Did you get the sharrow props installed?
Capt’n Lynn
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Post by stuwright on Sept 29, 2023 19:06:41 GMT
I thought I would post an update on the fuel saving for running a pair of these props on my 895 offshore. At 3900 rpm we are going 24.9 knots and using 65.4 lph. When I had the Yamaha props on at the same speed we were at 4200 rpm and using 72.2 lph.
Neither day were on perfectly flat water but similar to each other to make it a fair test. This is also the average after testing it in both directions to take out wind and tide variations.
Not as good as I had hoped but 7 lph in my pocket it better than in the fuel stations bank. I have also started taking my new 50 litre petrol tank full with E5 fuel every time I go out as a supplement. That saves £25 each time so it's a habit I want to do even if we are going to have lunch on the boat and not go out. In the UK you can only get E10 on the water which seems mad because it absorbs water faster than E5 which also has a higher Ron rating.
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