Forums > Windsurfing   Gps and Speed talk

FangyFin DIY help, hints and show us ya fin page

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Created by fangman > 9 months ago, 29 Oct 2017
fangman
WA, 1596 posts
15 Nov 2017 8:56PM
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Thanks Rog

Swindy
WA, 454 posts
15 Nov 2017 8:58PM
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The picture of the fin above has had a quick buff with a sisal mop and the brown polishing compound. Still a few deeper scratches to get rid of. Then a final polish with a cloth mop and white compound.

Swindy
WA, 454 posts
15 Nov 2017 9:08PM
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fangman said..
Thanks Rog

Its your kids that should be thanking me, no child exploitation over the holidays required

fangman
WA, 1596 posts
15 Nov 2017 9:14PM
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Swindy said..

fangman said..
Thanks Rog


Its your kids that should be thanking me, no child exploitation over the holidays required


It sounds like you are sayin' that like its a good thing??

Swindy
WA, 454 posts
15 Nov 2017 9:24PM
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fangman said..

Swindy said..


fangman said..
Thanks Rog



Its your kids that should be thanking me, no child exploitation over the holidays required



It sounds like you are sayin' that like its a good thing??


For your sanity, yes. I remember what my kids were like as teenagers.

Storm Ahead
137 posts
19 Nov 2017 11:08AM
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I made this case for the Fangyfin out of some leftover EVA mat. The edges are glued together with Kwik Grip and the fin sits snugly, fully enclosed and protected in the case. Cost was $0.00 as all materials were at hand.





fangman
WA, 1596 posts
19 Nov 2017 12:25PM
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Storm Ahead said..
I made this case for the Fangyfin out of some leftover EVA mat. The edges are glued together with Kwik Grip and the fin sits snugly, fully enclosed and protected in the case. Cost was $0.00 as all materials were at hand.






Nice one,that's such a cool idea. Much better than my bubble wrap!

choco
SA, 4034 posts
19 Nov 2017 4:24PM
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Swindy said..
Too right Mike, time is money. Have just put Ross on to a product that goes from 60 grit emery to this in about 10 minutes. I will let him rant about it.

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I could polish all the fins while cultivating lol just need some way to attach to the tynes, this point was polished after around 3 hours working the ground

Swindy
WA, 454 posts
19 Nov 2017 4:27PM
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choco said..

Swindy said..
Too right Mike, time is money. Have just put Ross on to a product that goes from 60 grit emery to this in about 10 minutes. I will let him rant about it.








I could polish all the fins while cultivating lol just need some way to attach to the tynes, this point was polished after around 3 hours working the ground



Nice bit of polishing, and the fin cover looks great. I need to make some for mine, not to protect the fin but everything else in my van as the edges of the fillet are so sharp. If they get near the sails it will look like slasher has been let loose in there.

waricle
WA, 732 posts
19 Nov 2017 7:53PM
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Making a start on my 24 & 28 fins. Just gathering tools and equipment and setting up.
Power tools are 7" sander with 36 grit for metal removal, 5" sander with flap disc for smoothing, linisher with various grade belts as well as a skotchbrite belt, spindle buff with skotchbrite, sisal and loose cloth mops, orbital sander, and various sanding blocks and files.
First step is clean off burrs and dross.
Then get the Tuttle head to size tomorrow.
Some pics of bits and pieces








fangman
WA, 1596 posts
19 Nov 2017 8:12PM
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Looking forward to watching your progess Peter :-)

waricle
WA, 732 posts
20 Nov 2017 6:12PM
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Progress on the 28
built a clamp for the fin, sized up the Tuttle head wth disc sander and files, fitted the fillet to the board, cleaned up the casting grain with the skotchbrite belt and wheel, set the drill vise at 90 degrees, cleaned up the fillet with sandpaper wrapped around a piece or plastic conduit, faired off the fin with a torture board and started sanding with the orbital and 240 grit to get rid of scratches before polishing tomorrow.
(Top pic upside down )
















I'll drill and tap the screw holes tomorrow and try the fin to make sure it's symmetrical after all my sanding.

keef
NSW, 2016 posts
20 Nov 2017 9:43PM
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looks fantastic waricle have you thought of making a copy of the foil with a profile gauge before you start sanding so you don't change the foil shape

fangman
WA, 1596 posts
20 Nov 2017 8:15PM
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Thanks for all the photos Waricle. I impressed with that belt sander. I wonder if I can make/buy an attachment to fit on my bench grinder to make it like yours - any ideas? I can send you the foil data file to be print out if you need it too.

fangman
WA, 1596 posts
20 Nov 2017 8:35PM
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fangman said..
Thanks for all the photos Waricle. I impressed with that belt sander. I wonder if I can make/buy an attachment to fit on my bench grinder to make it like yours - any ideas? I can send you the foil data file to be print out if you need it too.



Found it here :-)

http://www.linishall.com.au/Products/Grinding/belt-disc-grind-attachment.html

our just buy Ryobi version of the whole thing at Bunnings.

www.bunnings.com.au/ryobi-370w-bench-grinder-sander_p6210415

Dag
QLD, 720 posts
21 Nov 2017 8:41AM
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Mine's called "Multi Tool". You can buy them at Bunnings, or just about anywhere I think.
You can also buy an attachment to fit over the end of it to sharpen your chisel's and plane blades etc.
One of the most used thing's in the shed.

Swindy
WA, 454 posts
21 Nov 2017 10:36AM
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Got the Ryobi one, not enough grunt and too enclosed to get the fin near it. The one above is perfect with no guard around it. On wish list.

waricle
WA, 732 posts
21 Nov 2017 9:18PM
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Good idea on the foil pattern keef. I drilled and tapped the Fin and decided on 8 mm fin bolts straight into the alloy. Ill use the antseize compound with it same as my alloy foil. I'm seriously considering taking the 1/4 finbolts on the foil out to 8mm as well. I used degreaser as a drilling and tapping lubrication and it was fine. Hoping to try it out on the water tomorrow. I got a good fit on the naish board but I'll need a gasket under the thommen or a compromise regrind.
The linisher worked well for removing the cast grain but I think the sanding board although slower is much more accurate. The orbital is the best way to keep the shape accurate whilst removing sanding grain too.
Ill get this 28 right before I start on the 24.

fangman
WA, 1596 posts
21 Nov 2017 9:31PM
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Looking forward to hearing how you go on the 28

YP1
SA, 133 posts
22 Nov 2017 3:08PM
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My FF hit the shearing shed


nice large flat work space & NO Gards to get in the way
what better way to spend a hot fire ban day when you cant harvest

I found the final work on the tuttle/fillet to board fit was best done with my bastard then mill file

waricle
WA, 732 posts
22 Nov 2017 3:34PM
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Took the 28 out for its inaugural voyage today. The tide was 1/4 high and some weed. Wind was 8-10 with the occasional 12kts
I Used my Thommen xxl course board with a two cam 8.6 turbo and the 28 with a foam gasket.
I had about 1/2 an hour on the water and was on the plane 60-70% of the time.
I couldn't detect any assy on the fin, initially I was light on the back foot but in the gusts once I got some momentum I gave the fin some back foot pressure and had no spin out problems. It's not as early to plane as a 58 pointer but much earlier than my other weed fins.
Its early days Ross but so far but I am more than happy with its performance with the 8.6 and I'll also use it with the 7.8. . I'm really looking forward to finishing and trying out the 24 on my 75wide slalom with a 7.3 and 6.6. Upwind performance was as good as expected.
The tide was pretty low on the way in and I managed to find rocks among all that mud. To add insult to injury the board stopped dead,I came off the board, stubbed my toe and stone bruised my other foot. The fin should should clean up easily. I'm glad I used 8mm bolts though. Forgot to take my gps so no data though I didn't get anywhere near 20 + knots.
ill post pics before and after I clean up the fin damage.

fangman
WA, 1596 posts
22 Nov 2017 4:05PM
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Good stuff Tricky, I was just checking back through the Bogan GPSTC posts to see if you had been sailing/harvesting or had even christened the fin without me realising. What is that bit of kit - a massive sanding disc? I just spent the arvo knocking out 4 bases ( I may have created a monster for myself) and I am looking at that 'disc' thinking that's gotta be a quick way to shape the base, even if OS&H would go mental over the 'guards' or lack thereof
Waricle, I am just impressed you got planing at all in that amount of breeze! Bad luck to dent just about everything on the rocks tho. For interest's sake, and I realise its not really a valid comaprison given the difference in rake, but what was the difference in pointing ability between the 58 pointer and 28FF? And how did you go through the weed - was there much tugging?

waricle
WA, 732 posts
22 Nov 2017 9:03PM
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It's a bit early to give a definitive comparison with the 58 as I was being tentative.
Some pics of today's damage and repairs. The fin fitted with the foam gasket on my foil board








Started to polish after giving the edge a lick with the file.

fangman
WA, 1596 posts
23 Nov 2017 7:20AM
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If only your toe could be fixed as quickly! Nice job

fangman
WA, 1596 posts
28 Nov 2017 9:51AM
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I have started to notice a small amount of variation between different Tuttle boxes in the placement of the bolt holes. On some boards, my directly threaded bolt holes do not align perfectly. For that reason, and I have decided to investigate Iain's idea of using Delrin rod as my barrel nut. This will then allow some bolt angle of insertion latitude between boards and avoid the corrosion issue. I have ordered some rod and will try it out - the material is cheap and easy to get on Ebay. I will report back on how it goes.

decrepit
WA, 12162 posts
28 Nov 2017 12:04PM
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fangman said..
>>> I have decided to investigate Iain's idea of using Delrin rod as my barrel nut. This will then allow some bolt angle of insertion latitude between boards and avoid the corrosion issue. I have ordered some rod and will try it out - the material is cheap and easy to get on Ebay. I will report back on how it goes.


If it's good I'll have some too, Brass is so hard to work.

fangman
WA, 1596 posts
28 Nov 2017 12:32PM
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decrepit said..

fangman said..
>>> I have decided to investigate Iain's idea of using Delrin rod as my barrel nut. This will then allow some bolt angle of insertion latitude between boards and avoid the corrosion issue. I have ordered some rod and will try it out - the material is cheap and easy to get on Ebay. I will report back on how it goes.



If it's good I'll have some too, Brass is so hard to work.



No worries, I bought 60 cms, so I have enough to ping you some.

waricle
WA, 732 posts
28 Nov 2017 5:26PM
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What diameter Delrin are you using Ross?
Still loving my 28

fangman
WA, 1596 posts
28 Nov 2017 6:09PM
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waricle said..
What diameter Delrin are you using Ross?
Still loving my 28



Glad to hear your 28 is doing the job Peter I am going to try with 12mm and see how that fares. I found this supplier on Ebay - a large range of sizes to choose from and seems pretty well priced:

http://stores.ebay.com.au/Warlond-Plastics/Acetal-POM-/_i.html?_fsub=11815858012&_sid=812400812&_trksid=p4634.c0.m322

waricle
WA, 732 posts
30 Nov 2017 9:13PM
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Does the 12 dia have enough strength to run aground? Delrin is hard stuff. I've used it as bearing material.



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"FangyFin DIY help, hints and show us ya fin page" started by fangman