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FangyFin 22 (Woger was wight)

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Created by fangman 7 months ago, 7 Mar 2018
fangman
WA, 773 posts
4 Jul 2018 2:26PM
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Update on the FF22: No good news I am afraid. The castings did not meet Fred's quality control standards and he binned all of them. The problem arose from the the hollow core box being a little too large. As a consequence the gases could not escape quickly enough when pouring, and the result was excessive porosity in the foil surface adjacent to the hollow areas. Fred is reworking the core box and will re pour when he is happy along with a couple of FF18's at the same time. On a brighter note, the pours of all the other sizes went really well, so at long last, I have plenty of 20,24,28, fins available

fangman
WA, 773 posts
2 Aug 2018 10:52AM
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The FF22 is still proving troublesome to cast. Fred re-worked the core boxes to make them a bit smaller, but still had problems with blow out through the side of the foil, which you can see in the photo below.


He is having another crack the core box now and hopes to re pour next week if all goes to plan...

Fred also cast up four of the 3D print done by Nebbian of the tiny FF18 for me. They are in the mail today, so I should be able to have a closer look at those next week.

Swindy
WA, 214 posts
2 Aug 2018 11:24PM
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Lucky I made a couple of my own 22s

nebbian
WA, 6126 posts
3 Aug 2018 4:57PM
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Select to expand quote
fangman said..
Fred also cast up four of the 3D print done by Nebbian of the tiny FF18 for me. They are in the mail today, so I should be able to have a closer look at those next week.


Keen to see how those turn out

BSN101
WA, 1326 posts
7 Aug 2018 9:17AM
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Select to expand quote
fangman said..
The FF22 is still proving troublesome to cast. Fred re-worked the core boxes to make them a bit smaller, but still had problems with blow out through the side of the foil, which you can see in the photo below.


He is having another crack the core box now and hopes to re pour next week if all goes to plan...

Fred also cast up four of the 3D print done by Nebbian of the tiny FF18 for me. They are in the mail today, so I should be able to have a closer look at those next week.


Is Fred enjoying the challenge that you have given him. What does his usual pour make?

fangman
WA, 773 posts
7 Aug 2018 11:55AM
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Select to expand quote
BSN101 said..

fangman said..
The FF22 is still proving troublesome to cast. Fred re-worked the core boxes to make them a bit smaller, but still had problems with blow out through the side of the foil, which you can see in the photo below.


He is having another crack the core box now and hopes to re pour next week if all goes to plan...

Fred also cast up four of the 3D print done by Nebbian of the tiny FF18 for me. They are in the mail today, so I should be able to have a closer look at those next week.



Is Fred enjoying the challenge that you have given him. What does his usual pour make?


I think Fred might have gone past the point of "enjoying" the challenge...
When Fred bought the business it specialised as an Art foundry, so mostly 'one off ' pours. Fred is a Pattern Maker by trade and so I think commercial level specialised tools/ part making etc will part of the business now. In any case he is a very busy boy and I have to wait my turn each time.

Select to expand quote
nebbian said..

fangman said..
Fred also cast up four of the 3D print done by Nebbian of the tiny FF18 for me. They are in the mail today, so I should be able to have a closer look at those next week.



Keen to see how those turn out


Nebs I posted a few pics of the FF18 on the other thread:

www.seabreeze.com.au/forums/Windsurfing/Gps/FangyFin-MkII-Theory-for-insomniacs?page=12#lastpost

Swindy
WA, 214 posts
7 Aug 2018 1:12PM
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Be patient people, the FF 22 will be well worth the wait. The one I have made from a 24 is my most used and favourite FF and bridges the gap perfectly. I have now achieved 2 24kn hours using it, so the first one wasn't a fluke. Last Thursday I sailed for about 1hr 20min without an off sometimes in quite challenging conditions. In that time the fin only let go once and was rock solid in every jybe. Though I wasn't attempting alphas as maintaining speed was more important I still managed a 23. With the many quite solid weedbergs and shallow water anything other than a delta type fin would have been dangerous. It's also great to be able to say "I told you so" on a regular basis. Keep up the good work Ross, them 18s look great. You better work nights to get one of them in a useable condition.



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"FangyFin 22 (Woger was wight)" started by fangman