{"id":1251,"date":"1999-11-30T00:00:00","date_gmt":"1999-11-30T05:00:00","guid":{"rendered":"https:\/\/setsail.com\/?p=1251"},"modified":"2015-10-16T12:15:39","modified_gmt":"2015-10-16T17:15:39","slug":"hundested-prop","status":"publish","type":"post","link":"https:\/\/setsail.com\/hundested-prop\/","title":{"rendered":"Hundested Prop"},"content":{"rendered":"
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Dear Steve, <\/p>\n<\/p>\n

I am building a Bruce Roberts kit of 54′ radius chine cutter. After reading the Offshore Cruising Encyclopedia and viewing your Beowulf: The Legend DVD, I have decided to install CP prop by Hundested. I am getting the prop from Todd Terry at Pacific Marine Equipment, Inc. in Seattle. As far as I was able to find out, they are the (US) West Coast distributor for Hundested gear. Anyway, the thing is: You are saying in your book that you were using VP2 model, which according to Todd is no longer available. Therefore I am going with a bit larger VP3 model. Now, according to Todd, one can choose either fully reversible pitch prop or fully featherable prop to minimize the drag while sailing. <\/p>\n

If I choose fully featherable prop, my reverse pitch is very minimal, nowhere near the forward pitch. If I choose the fully reversible prop I will have to give up the low drag feature of fully feathered prop. <\/p>\n<\/p>\n

After viewing Beowulf DVD In the chapter titled "Maneuvering Under Power", you have Linda reverse the pitch from 3.5 ahead to 4 astern. The scale on the gauge shows up to 6 ahead, up to 5 astern and also feathered position. Does it mean that with the VP2 you had the option of having nearly fully reversible pitch and also feathered position for sailing??? <\/p>\n<\/p>\n

Are you familiar with the VP3 model and what is the difference between it and the old VP2 one? I have seen the operational model of VP3 in Seattle and in fact the reverse pitch is very minimal, a fraction of the forward pitch capabilities. Was your prop the same way? <\/p>\n<\/p>\n

I am sorry for rumbling on and on about it, but the Hundested props as you know are not cheap and I would like to make sure that my money will be wisely spent. I would be very grateful for your comments regarding this matter. <\/p>\n<\/p>\n

Good luck with your UnSailboat! I hope to meet you one day in some anchorage. Best Regards, Remek <\/p>\n<\/div>\n

<\/p>\n

\n

Hi Remek: Either the distributor is telling you something that is incorrect or Hundested has changed something.<\/p>\n

To begin with, on BEOWULF, we had both good reverse capability and full feathering. The blades would not go as far in reverse as they did forward, but it was more than sufficient for stopping the boat and for walking it around a circle using prop torque (in either direction). The model we ordered was specified as full feathering. This VP2 was purchased in about 1993, and I they could probably check their records at Hundested.<\/p>\n

As to the VP3, this is a very much larger hub, and if your engine is not large enough to take advantage of the larger hub and blades, then I would re-think the use of the Hundested. We used a VP3 on Kondor, similar to BEOWULF except she was a little heavier and had a 225HP Yanmar instead of the 170 HP which we had on BEOWULF. I believe her prop diameter was 27" or 28" BEOWULF was 26". <\/p>\n

If your engine is under 185HP, then I would probably pay the efficiency penalty of something like a 3-bladed Max prop, and think about over-pitching to reduce face cavitation on the Max prop (discussion of this in Offshore Cruising Encyclopedia). Good Luck–Steve<\/p>\n

<\/div>\n","protected":false},"excerpt":{"rendered":"

Dear Steve, I am building a Bruce Roberts kit of 54′ radius chine cutter. After reading the Offshore Cruising Encyclopedia …Read More<\/a><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10,15],"tags":[],"class_list":["post-1251","post","type-post","status-publish","format-standard","hentry","category-tech-talk","category-yacht-propellor-faqs"],"_links":{"self":[{"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/posts\/1251"}],"collection":[{"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/comments?post=1251"}],"version-history":[{"count":1,"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/posts\/1251\/revisions"}],"predecessor-version":[{"id":36510,"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/posts\/1251\/revisions\/36510"}],"wp:attachment":[{"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/media?parent=1251"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/categories?post=1251"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/tags?post=1251"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}