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PostPosted: Fri Feb 08, 2019 11:56 am 
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Site Rank - Deck Hand

Joined: Fri Feb 08, 2019 11:35 am
Posts: 2
Hello all,
I recently bought a 21SE and was repairing the centerboard spring mechanism because a couple of the springs were broken. I tried to order springs from a company that gets them direct from Hobie but it seems they sold their last stock. Not sure if or when they'll restock but I ended up ordering custom springs from springsfast.com. They are a small business with reasonable prices. They gave me a volume discount with each spring costing about $20 each in a batch of 10 springs total. It was much cheaper than what some other companies were quoting me. Anyways, here are the specs I measured for the H21 SE's centerboard springs in case anyone needs to order custom replacements for theirs:
0.058" thickness
stainless steel 316 (marine grade stainless so resistant to rusting)
0.560" Outer Diameter
8" body length
9.25" overall length
I got machine loop ends though I think the originals were center cross over ends but the machine loops should also work fine.


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PostPosted: Fri Feb 08, 2019 4:03 pm 
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Joined: Sat May 02, 2009 5:22 am
Posts: 650
Location: Columbus, Indiana
So you have the right springs and some extra now... :) maybe I could get a set for my boat too....I still have the original springs that work just fine after over 30 years but a spare set seem like the right thing for me.

Let me know. Thanks! :D

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Bill 404 21SE
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PostPosted: Tue Feb 12, 2019 12:35 pm 
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Posts: 23
I would like 2 sets of 21se springs. Dave s


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PostPosted: Thu Feb 21, 2019 4:26 pm 
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Joined: Tue Jul 24, 2018 12:20 pm
Posts: 110
Location: Galveston, Texas
Heck, I would like a single set, if for sale.

Chuck C

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ChuckC
H21SE- 408


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PostPosted: Fri Mar 08, 2019 12:17 pm 
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Hey guys, I sold a few of the springs and would like to keep the rest as spares for myself. If you get a group together and contact that small business, they should be able to do a batch of the springs and get you a volume discount.


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PostPosted: Fri Mar 08, 2019 4:18 pm 
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Joined: Tue Jul 24, 2018 12:20 pm
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Location: Galveston, Texas
Thanks for the tip. Guessing the other alternative, if not available at Hobie, would be McMaster-Carr but you'll have to buy spring stock in 302 stainless and make them yourself.

Not sure about 302, though. No idea how suitable...

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ChuckC
H21SE- 408


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PostPosted: Tue Aug 18, 2020 1:28 pm 
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Joined: Tue Dec 10, 2019 8:15 am
Posts: 9
I'm in the market for a pair of centerboard springs on my 21sc. Has anyone had any long-term success with using bungee cord? Alternatively, does anyone have these springs for sale or interested in getting in on an order?

Thank you Sailor456 for providing the specs on the spring.


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PostPosted: Tue Aug 18, 2020 1:58 pm 
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Joined: Tue Jul 24, 2018 12:20 pm
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Location: Galveston, Texas
I think you can get spring stock at McMaster-Carr, if not available from Hobie, etc.

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ChuckC
H21SE- 408


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PostPosted: Sat Aug 22, 2020 7:06 pm 
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ChuckC wrote:
I think you can get spring stock at McMaster-Carr, if not available from Hobie, etc.


Great recommendation on McMaster-Carr. I was able to get some spring stock (part# 9665K46) which was 20" long, enough for two springs for $15. Attaching the upper loop to the bolt shaft was a challenge on the 21sc because there's no access except from below. Instead of using a loop bent into the spring I found an old luff shackle and used it as the hook. Much easier to attach, hopefully there will be enough pressure to keep it in place.

https://photos.app.goo.gl/PX27qSWGr7USZxwV7


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PostPosted: Sat Aug 22, 2020 8:59 pm 
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Joined: Tue Jul 24, 2018 12:20 pm
Posts: 110
Location: Galveston, Texas
Photo won't come up, but I'm glad it worked. I learned about Mcmaster from buddies when I used to build and fly RC turbine jets. We had to be really creative to source stuff like micro pneumatic cylinders for manufacturing to use as retractable gear power, high quality stainless sheet for exhaust/thrust tubes, etc. Its really an engineer's source; o good one but not specifically for boats, much less Hobie stuff.

You can get the elusive stainless taper pins for a 21 SE there as well. But, they're like $40-50, each and still need threads cut.

Would love to see pics.

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ChuckC
H21SE- 408


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