gymnastics chain carabiners

This is a follow up to the post on single point of failure industry standard apparatus cable floor attachments.

Ricky points out that it’s not only the floor plate we need to consider, but the entire tie-down mechanism.

The most frequent mistake made in gyms is when some well meaning maintenance person decides to use a threaded quick link like this one:

Yes, that’s the same kind used in the new installation pictured above. Safe when used properly. Safe when threaded only once.

But in my opinion, if you’ve got those in your gym, replace. It’s possible for the threads to get stripped after repeated use. Likely you’ve seen Quick Links fail. They are untrustworthy.

UPDATE: Here’s an example of one of those Quick Links having failed.

Of the better alternatives, mountain climbing carabiners are light, strong and widely available. Get locking carabiners, just in case.

Locking carabiners have the same general shape as non-locking carabiners but have an additional sleeve securing the gate. These sleeves may be either threaded or spring-loaded twist-lock. …

There are two main kinds:

• Twist-lock
• Screw-lock

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Other suggestions:

George and Ian upgraded the attachments at Phoenix Gymnastics, Edmonton, by adding floor plates with multiple bolts, rather than just one. GREAT.

(Those still worry me when attached to a wood floor – on basketball floors, for example. I’ve seen the entire floor plate, with 4 flimsy wood screws, pull out at the same time.)

Tim Douglas linked to a new-to-me technology they’ve used called – Chemical Anchoring (PDF)

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Update.

Greg Jackson
has some cautions regarding the climbing carabiners:

In rock climbing, we use very similar anchors and bolts too. I have installed quite a few of those in far more uncomfortable positions than standing on a gym floor.

The most important part of the system is proper installation – especially in relatively soft concrete. It’s common for people to be too casual while drilling the hole. You must keep the drill straight so that you don’t flute the hole and, for some anchors, you must ensure that you’ve drilled to the proper depth.

If you’re going to use two anchors, they must be at least 10 times the diameter of the anchor away from each other or from an edge, otherwise the concrete will “dinner plate”.

Chemical anchors have been used for ages. The French climbers have been using them in their famous limestone cliffs for decades.

The quick links are plenty strong if closed properly with a wrench; use Loctite Blue to seal the threads. Don’t use Loctite Red as you’ll need a blow torch to break the seal.

DO NOT use an aluminum carabiner, they will wear very fast with the repetitive movement against the sharp steel edges of the anchors. In permanent carabiner installations on rock climbs, steel quick links are used. A steel carabiner is usually huge and quite expensive as they’re used mostly for rescue and not climbing as they’re too heavy.

… So, there’s no perfect alternative to the threaded Quick Link, so far as I can see.

Decades ago we tried these U-bolts, hoping they were more reliable than the Quick Link.

I’ve never seen one fail.

Leave a comment if you’ve anything to add to this discussion.

Gymnastics Gala Iceland

by site editor Rick McCharles

Here is a glimpse of the amazing year end gymnastics performance at Gerpla, Reykjavik. They celebrated the 40th anniversary of the club founding in style.

Click PLAY or watch it on YouTube.

All 4 shows that weekend were sold out.

Thanks Gummi Brynjólfsson for inviting me. I’m volunteer coaching at the gym tonight.

coach in Australia

Yeppoon Gymnastics in Queensland has a Women’s Artistic Coaching job open … up to 38hrs / week. Salary commensurate with experience.

Send resume to Barbara – patkirwan1 {AT} bigpond.com

coach in Yukon

Women’s Artistic Head Coach

Polarettes and Polar Tumblers Gymnastics Club in Whitehorse, Yukon, Canada are a long established club with 450 kids, 30 of those competitive.

Whitehorse is in the mountains with a ski resort, lakes, fishing and hiking all nearby.

Salary starts at $50, 000 per annum plus benefits.

If you want to know more, contact Kimberley Henney (mikekim@northwestel.net)  867-667-4701

They are also looking for an Assistant Head Coach, salary starting at $40,000. (Husband and wife team?)

I was up at Polarettes last year. It’s a very good facility attached to a school. These are two great opportunities.

home page – Polarettes & Polar Tumblers Gymnastics Club

gymnastics bar floor plates unsafe

Here’s a newly installed floor plate for a set of women’s bars. A standard installation.

That’s a single point of failure. If something goes wrong, the bars fall. As they did on Ludmilla Tourischeva in 1975.

Almost every coach has seen this happen. It’s not all that rare.

Why don’t we double floor plate gymnastics apparatus?

Kelly Manjak and I did that at Altadore in 2004, but I’ve never heard of any other instance.

Leave a comment if you know of a gym that has doubled floor plates. Or of equipment installed such that one chain failure won’t allow the apparatus to fall.

evaluating mild head injury

As a coach, people will look to you as ‘expert’ on possible concussions, even though the incidence is low in Artistic Gymnastics.

Here’s a quick checklist:

I only bring this up because of the relatively new evidence of sub-concussive brain damage.

If you’ve any doubt at all, take the athlete out of play. You are not expert enough to decide that a suspected head injury is minor enough to continue. As first responder, you’d pass the athlete on to a specialist.

Increasingly computerized neuropsychological test (e.g., ImPACT, CogSport) are being used for assessment. It’s getting easier and less expensive to do assessment.

That chart comes from this article – HEADS UP! – A Soccer Coach’s Guide to Concussion (PDF)

In 2011 there’s no such thing as simply being “shaken up”. And getting back in the game. That era is gone forever.

Pauline Nordin – body builder

You want guns?

Pauline Nordin represents something called the Fighter Diet.

Click PLAY or watch her on YouTube. Warning – some of the pictures are a bit racy.

new Canadian Olympic logo

Canada’s Olympic team will sport a new streamlined logo on their gear at the 2012 Summer Olympics in London. …

The main difference between the Canadian Olympic team’s current and previous logo is the elimination of the flames in the centre of the mark.

The new design features a Maple Leaf in the centre above the five Olympic rings. A red oval border, reflecting a speed skating oval and athletic track, encircles the Maple Leaf and rings. …

New logo for Canada’s summer Olympic team

Click PLAY or watch a history of the log on YouTube.

Filip Yanev – H Bar – Shushanova

Bob and Polytroll found a routine where Filip Yanev competes the (G-value) Shushanova (VIDEO). ( Better than any female gymnast I’ve seen do it.)

I wonder what value he got from the Men’s judges?

WsvanWijk tells it’s a that ?a similar skill (Stalder to piked side vault) is already a C-part in the Men’s code.

Click PLAY or watch it on YouTube.

That routine is also a good bad example of what we used to call “overuse of one kind of skill”.

related – new Bar release – the Monckton