The Art of Stitching - TwoWheelForum: Motorcycle and Sportbike forums
 
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post #1 of 18 (permalink) Old 11-20-2007, 04:07 AM Thread Starter
 
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The Art of Stitching

A few pics of how a leather suit should NOT be stitched together:

Alpinestars Stage-1 after a low speed tumble:








Joe Rocket GPX after a good tumble on the track at high-speed:








Both riders received relatively minor injuries in either event, both lucky outcomes for the damage and failures of the pieces to stay together.


Dainese showing similar results:








How should a suit be stitched together?

"Testing is the only way to be sure that seams are strong enough to hold, but you can check for the following:

* Seams in Zones 1, 2 and 3 should have at least one row of concealed or protected stitching, to hold the seam together after the visible stitching has been worn away against the road surface.

* Check the stitching. It should be regular with no dropped stitches, which indicate a potentially weakened seam.

* Leather should have 11-14 stitches per 5 cm, fabric should have 13-16 stitches per 5 cm (Standards Australia, 2000, p 22). Too few stitches, means the seam will be too weak, but too many stitches will actually weaken the fabric.

* Additional layers should be double stitched.

* Additional layers MUST be stitched on top of the main protective layer - see diagram A, rather than a separate double section that is inserted into the garment (see B). Check inside the garment to ensure there is no gap in the main protective layer. You may need to feel through the lining."

http://www.roadsafety.mccofnsw.org.au/a/88.html








The CE standard for motorcyclists whole garments includes minimum requirements for burst strength:

EN 13595-3:2002 Protective clothing for professional motorcycle riders. Jackets, trousers and one piece or divided suits. Test method for determination of burst strength.

An example of a CE-approved stitchwork, the only suit to score well in that category, and the only CE-approved suit:





In another test, the BKS and Carrera suits took top honors, both CE-approved, the only perfect scores in seam strength:

http://www.southbayriders.com/forums.../pic102319.pdf



As is mentioned in this article:

Critical seams which are vulnerable to abrasion in a slide (those at the elbows, shoulders, hips, knees, back and bum) should be protected with overlaid reinforcement panels to hold the seam together after any exposed stitching has been damaged. The suit should be made from large panels of leather with any graphics overlaid and not patchworked in.


BKS's superior methods shown at bottom:

http://www.bksleather.co.uk/designsp...r_strength.pdf


ZEROS and below average seam burst in the lab:











Stitching described as doubles-stitched and glued. It's flat-stitched, with a patchwork graphic design:

Last edited by license2ill; 11-20-2007 at 05:18 AM.
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post #2 of 18 (permalink) Old 11-20-2007, 07:59 AM
 
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Good post.



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post #3 of 18 (permalink) Old 11-20-2007, 08:19 AM
 
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hopefully you weren't the one crash-testing all those suits.
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post #4 of 18 (permalink) Old 11-20-2007, 08:36 AM
 
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Thanks for the info
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post #5 of 18 (permalink) Old 11-20-2007, 08:54 AM
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Got my vote for one of the best threads of all time!! Wow!!
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post #6 of 18 (permalink) Old 11-20-2007, 04:53 PM
 
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Great post, good info.
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post #7 of 18 (permalink) Old 11-20-2007, 05:02 PM
 
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do what i do.... tumble instead of slide

but it hurts

-a|ex
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post #8 of 18 (permalink) Old 11-20-2007, 05:14 PM
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Now just think of how well jeans would hold up

Good Thread too BTW
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post #9 of 18 (permalink) Old 11-20-2007, 09:49 PM
 
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Good stuff, thanks newbie!

Tell us a little about yourself.


Quote:
Patience is something you admire in the driver behind you and scorn in the one ahead. ~Mac McCleary
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post #10 of 18 (permalink) Old 11-21-2007, 11:16 PM
 
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Nice.

At 1115 pounds (US$ 2,291.36 on 11/21!), the Hideout suit price would provide me with another incentive to avoid going down. I'd be thinking "The Hell I'm going down, I'm not ruining a $2300 suit!"

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post #11 of 18 (permalink) Old 11-22-2007, 07:51 AM
 
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Originally Posted by Wadoka View Post
Nice.

At 1115 pounds (US$ 2,291.36 on 11/21!), the Hideout suit price would provide me with another incentive to avoid going down. I'd be thinking "The Hell I'm going down, I'm not ruining a $2300 suit!"

That is some serious jack.



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post #12 of 18 (permalink) Old 11-22-2007, 02:07 PM Thread Starter
 
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Originally Posted by marko138 View Post
That is some serious jack.
If you consider the price of the last place Dainese and Astars suits in the one-piece test, that are not custom-fitted, it really shows that substance is not necessarily tied to the price tag, though. You get something for your money in the CE-approved items, but you get last place results and failures for a relatively similar amount of money with some big names.
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post #13 of 18 (permalink) Old 11-22-2007, 02:44 PM
 
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EXCELLENT POST!
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post #14 of 18 (permalink) Old 11-22-2007, 09:26 PM
 
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Originally Posted by marko138 View Post
That is some serious jack.
You haven't priced out some of the Dainese off-the-shelf suits lately then?

I find it ridiculous to pay the prices that Dainese, AlpineStar and even Joe Rocket command for their suits when you can go custom for the same price or maybe a few hundred more.
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post #15 of 18 (permalink) Old 11-22-2007, 09:29 PM
 
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Originally Posted by fnfalman View Post
You haven't priced out some of the Dainese off-the-shelf suits lately then?

I find it ridiculous to pay the prices that Dainese, AlpineStar and even Joe Rocket command for their suits when you can go custom for the same price or maybe a few hundred more.
No I haven't.



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post #16 of 18 (permalink) Old 11-24-2007, 03:26 AM
 
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No I haven't.
http://www.cyclegear.com/spgm.cfm?L1...-48_G&tier2=95

$2400 for a Dainese one-piece racing suit. Why, oh why, would anybody want to shell out that much money for an off-the-shelf item with questionable manufacturing quality? But hey, you'd look like Valentino Rossi

http://www.cyclegear.com/spgm.cfm?L1...110_G&tier2=24

$1900 for an AlpineStar racing suit. WTF, over?

You can get an American-made (although that doesn't say much if you didn't get it from a well known quality shop) stitched to YOUR size by American craftsmen using premium cowhides and CE armor (hint, CE armors don't really cost that much) units for not much over $1200 (if you don't get crazy with the colors and graphics) by most any well known custom shop (NJK, Sayed, Z Custom, Zoonies, Komodo, Bates, Vanson). Helimot suits usually run by the $2000+ but there isn't much better than Helimot race suit unless it's another custom outfit from some of the British custom leather makers.

Last edited by fnfalman; 11-24-2007 at 03:32 AM.
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post #17 of 18 (permalink) Old 12-02-2007, 10:38 AM
 
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yeah too expensive but just like lids can't really put a price on safety but they are overpriced and unless your hitting the track err day i think pants,jacket,boots would be fine great post though when i get to the track ima def get a quality suit
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post #18 of 18 (permalink) Old 12-02-2007, 04:58 PM
 
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Originally Posted by Carolina View Post
yeah too expensive but just like lids can't really put a price on safety but they are overpriced and unless your hitting the track err day i think pants,jacket,boots would be fine great post though when i get to the track ima def get a quality suit
MY POINT is that you can get a custom suit with superior fitment and superior craftsmanship for the same money or less than a Dainese or AlpineStar.
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