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PostPosted: Wed Jun 04, 2014 8:34 am 
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Joined: Fri Apr 18, 2014 10:40 am
Posts: 7
I am trying to machine a new masthead sheave out of delrin for my older H16 (non comp tip) but I am seeing varying reports as to the dimensions and mine is so disintegrated that it is not measurable.

shadme indicates here (viewtopic.php?f=14&t=28129) that they are 4 7/8" diameter, 4 3/8" diameter in the groove, with the groove being 3/8" round. The whole sheave is 13/32" thick and has a 3/8" hole.

PurdueZach measures one here (viewtopic.php?f=14&t=46565) that has a 5" diameter, 4 1/2" diameter in the groove The whole sheave is 3/8" thick and has a 3/8" hole.

Which dimensions are most correct?
Thanks for any help you can offer.


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PostPosted: Wed Jun 04, 2014 10:09 am 
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I may still have one extra. I was keeping it in case I ever need to replace my own. Let me go out and see.

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PostPosted: Wed Jun 04, 2014 11:22 am 
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PostPosted: Wed Jun 04, 2014 2:33 pm 
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Awesome Zach! So how big is it?


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PostPosted: Wed Jun 04, 2014 2:35 pm 
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Do you just want this one? I can get you dimensions too if you want to still make one.

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PostPosted: Wed Jun 04, 2014 2:42 pm 
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Thanks for the offer but I already have the delrin in the lathe so I would like have some solid numbers to finish it up. I am hoping the fresh delrin might last longer than the nylon or whatever the old one was made out of.


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PostPosted: Wed Jun 04, 2014 5:12 pm 
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Location: Oceanside, California
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Matt Miller
Former - Director of Parts and Accessory Sales
Warranty and Technical Support
Hobie Cat USA
(Retired 11/7/2022)


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PostPosted: Wed Jun 04, 2014 6:20 pm 
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Now that's what I call some fantastic commitment to the customer!

Way to go above and beyond, Mr. Miller!


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PostPosted: Thu Jun 05, 2014 8:24 am 
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Matt!! Thank you thank you thank you! This is awesome and exactly what I needed. I see why there was some discrepancy in the measurement. I will share a picture once its been made.


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PostPosted: Mon Aug 03, 2015 4:38 pm 
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After a few internet searches and lots of guessing, found this thread that helped me answer the questions on getting my masthead fixed. Thanks Matt for the drawing. It was very helpful in finding someone to make one for me. Ended up sending the masthead to ZEPHYRWERKS (http://www.zephyrwerks.com/) Ed Louchard

Ed did a beautiful restore on the masthead sheave with a brass cam and new pin. Works better than ever!

- Joe

1982 H16


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PostPosted: Tue Oct 04, 2016 10:12 pm 
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Joined: Tue Dec 29, 2015 11:08 am
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mmiller or anyone: can I buy a new sheave from Hobie or anyone else out there,Would also like the alum mast tip, but most info says not available anymore? Lots of old H16's probably need this/these parts....(rather than new com tip +halyard,etc,$$$.Help!?! Maybe attach a regular block, and line halyard like most masts have, not going to race anyway? comments? what was/is the reason(s) for the wire/line halyard set-up anyway?


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PostPosted: Wed Feb 15, 2017 8:09 pm 
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Joined: Sun Dec 16, 2007 5:22 pm
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Joe, what did the masthead sheave from Zephyrwerks cost and will they make me one? Thanks, Bob.


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