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Stringy foil available here

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BigSky
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Stringy foil available here

Postby BigSky » Tue Jun 13, 2017 12:40 am

Those that follow Greg at BRM knows he's a huge fan of Jim Stringfellows foils and uses them exclusively. I had a difficult time finding them last year but recently discovered from Jim he's now selling them directly here: http://jimstringfellow.com/Site/stringyfoil.html#1 He was a pleasure to work with and the prices are reasonable. He's also found ways to trim down weight. He's a great innovator to support. Cheers

hshim007
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Re: Stringy foil available here

Postby hshim007 » Tue Jun 13, 2017 3:53 am

Does anyone know the weight of the foil and mast? Thanks

Eltreato
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Re: Stringy foil available here

Postby Eltreato » Tue Jun 13, 2017 6:42 pm

I have Jim's foil on an LF mast, it's pretty great. I don't know the wing and fuselage weight, but it seems considerably lighter than the LF low aspect offering. Jim was also great to deal with. Thanks for posting the website link OP.

BigSky
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Re: Stringy foil available here

Postby BigSky » Tue Jun 13, 2017 9:41 pm

Thanks Eltreato. Jim indicated he has his own Fuselage which has weight savings. It is the liquid force mast and plate. I will weigh it once I receive it. I will send him a link to see if he wants to participate in the discussion and answer any questions.

stevez
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Re: Stringy foil available here

Postby stevez » Wed Jun 14, 2017 12:16 am

I was surprised how light it is. I weighed mine when I got it, the wings + fuse weighed 1.56kg.
With a 96cm zeeko mast the whole thing weighs in at just on 4kg.
i'm pretty sure the LF mast is lighter, so I'd expect it to be around the same or slightly less.

tegirinenashi
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Re: Stringy foil available here

Postby tegirinenashi » Wed Jun 14, 2017 2:19 am

stevez wrote:
Wed Jun 14, 2017 12:16 am
...i'm pretty sure the LF mast is lighter...
LF has a beefy collar, while Zeeko is just a plate so I won't be so sure about the weight. (One more screw -3 vs. 2 - for Zeeko though).

BTW, LF rocket is 4.5 kg compared to 4.0 Zeeko which is definitely because of lighter fuse+wings, but perhaps collar contributed a little too.

hshim007
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Re: Stringy foil available here

Postby hshim007 » Wed Jun 14, 2017 4:27 am

Jim kindly answered a PM I got from him. The weight is 7 pounds or 3.2 kg. Pretty awesome

tegirinenashi
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Re: Stringy foil available here

Postby tegirinenashi » Wed Jun 14, 2017 7:09 pm

hshim007 wrote:
Wed Jun 14, 2017 4:27 am
...The weight is 7 pounds or 3.2 kg...
If main wing were mounted below the fuse and used 2 screws only (instead of 6) that would have been some additional weight saving:-)

Europ2
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Re: Stringy foil available here

Postby Europ2 » Thu Jun 22, 2017 9:55 pm

tegirinenashi wrote:
Wed Jun 14, 2017 7:09 pm
If main wing were mounted below the fuse and used 2 screws only (instead of 6) that would have been some additional weight saving:-)
Like this you mean ? Yes it"s his canard attempt :)
Image

juandesooka
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Re: Stringy foil available here

Postby juandesooka » Thu Jun 22, 2017 11:34 pm

6 bolts: the wing is quite thin at the edges, maybe just 2-3mm, and then 7-8mm in centre. The extra bolts are just to spread the load … the extra few ounces seem worth it for not breaking the wing.

Canard: needs to have the rear wing mounted upside down, so both provide lift. Then you’d need wings about half the size and weight (and probably less bolts too ;-)


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