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#169357 - 03/15/09 03:56 AM Re: Stupid Snowmobile Accident Today! [Re: Mike_in_NKY]
timo Offline
Newbie

Registered: 01/27/08
Posts: 39
Another reason safety helmet makers insist helmets should not be reused after an accident is that the energy absorbing component, which looks like styrofoam, is intended to compress and distribute force over a large area. The outer shell may look fine but the "foam" may have done it's job and is now less effective at absorbing energy. I've also known that material to become harder with age after picking up a motorcycle helmet I had laying around for years.
If the foam liner has become harder, more force is going to be transmitted to your noggin. noggin. (That last one was a joke)

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#169439 - 03/16/09 03:30 AM Re: Stupid Snowmobile Accident Today! [Re: timo]
SwampDonkey Offline
Veteran

Registered: 07/08/07
Posts: 1268
Loc: Northeastern Ontario, Canada
My symptoms were not going away, so I called Ontario Tele-health. This phone service connects you with an on-call nurse, who said go to the hospital, now.

So I spent the evening in the emergency ward. After many tests (including a CT Scan, blood and urine) and lots of poking/prodding it was determined that I have a concussion and strained muscles in my neck, hips and groin.

Just like it said on the internet treatment is to take painkillers, get lots of rest and take some time off work. As it turns out I had planned to take all next week off anyway.

Maybe I can still get out of building those shelves for my wife?

The up-side is that I did not major damage to myself, and I got 5 chapters of Cody Lundin's book read in the waiting room.

Mike

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#169446 - 03/16/09 04:57 AM Re: Stupid Snowmobile Accident Today! [Re: SwampDonkey]
nurit Offline
Member

Registered: 03/27/08
Posts: 191
Loc: NYC
Thanks for the update. Concussion and strained muscles can't be fun, but I'm relieved to hear you have a clear diagnosis and no major damage.




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#169451 - 03/16/09 06:12 AM Re: Stupid Snowmobile Accident Today! [Re: nurit]
Paul810 Offline
Veteran

Registered: 03/02/03
Posts: 1428
Loc: NJ, USA
I'm guessing you don't run a studded track? All of my sleds are studded just for that reason. I was riding an unstudded 340cc fan-cooled years ago and the back end went out while I was riding along an icy curve.

Luckily, I counter-steered, hit the brake, and it kicked back in line; but after that I studded all my sleds. It makes a noticeable difference in traction and handling. Like snow-chains for snowmobiles if that makes any sense. wink

You just have to remember to change to a slightly deeper set of carbides as well. This is because, on certain sleds, studding the track will cause it to grip too much in the rear and make it understeer slightly (which isn't as bad as snap oversteer, but it can be an issue), but changing the carbides to match the studs you're using fixes that.

Anyway, hope you feel better. Snowmobiles can be very dangerous. I figure snowmobiling along trails is often tantamount to playing a game of "dodge the trees."

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#169522 - 03/17/09 12:37 AM Re: Stupid Snowmobile Accident Today! [Re: Paul810]
SwampDonkey Offline
Veteran

Registered: 07/08/07
Posts: 1268
Loc: Northeastern Ontario, Canada
Hi Paul810,

I agree with you that a studded track would solve my problem of going into spins on glare ice. I was told in the past that my sled, a 2006 Ski-doo Expedition TUV 600 Liquid could not be studded due to the in-tunnel cooling system. I did a search tonight and there is one listing for studs using tunnel protectors, I will have to explore this option?

The other problem I have with the regular (unstudded) track and carbide runners is if you stop on glare ice the carbides bite in and the track just spins around without traction. You end-up stopped on a completely flat, snowfree surface. This problem is worse when loading the sled on a ramp into a truck if the area is icy. You have to take a run at it, then mash the brakes as you reach the top of the ramp or you will slam into the rear cab of the truck.

I do not know how much more snowmobiling I will be doing this season as the doctor put me on light-duty till my concussion/headaches go away. I will look at studding the snowmobile track for next season.

Thanks, Mike

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#169536 - 03/17/09 03:37 AM Re: Stupid Snowmobile Accident Today! [Re: SwampDonkey]
Paul810 Offline
Veteran

Registered: 03/02/03
Posts: 1428
Loc: NJ, USA
Originally Posted By: SwampDonkey
Hi Paul810,

I was told in the past that my sled, a 2006 Ski-doo Expedition TUV 600 Liquid could not be studded due to the in-tunnel cooling system. I did a search tonight and there is one listing for studs using tunnel protectors, I will have to explore this option?


Ski-Doo sleds generally come with tunnel protectors, however the stock ones usually aren't designed for long studs as they're too short to protect the heat exchanger from them (the long studs). Therefore, you often have to swap out the protectors for longer ones. Often times they just slide right in real easy. Here's a pic to give you an idea of what they look like:



Quote:

The other problem I have with the regular (unstudded) track and carbide runners is if you stop on glare ice the carbides bite in and the track just spins around without traction. You end-up stopped on a completely flat, snowfree surface. This problem is worse when loading the sled on a ramp into a truck if the area is icy. You have to take a run at it, then mash the brakes as you reach the top of the ramp or you will slam into the rear cab of the truck.


Carbides will usually help with driving on ice, as they can usually bite in pretty well. Where they don't help is when you are driving on roads and on, say, an aluminum ramp. This is because the surface is simply too hard and unforgiving for the studs to really bite into, so you have to take it easy on those surfaces regardless of whether you have studs or not.

On snowmobiles it's always best to try and avoid traveling on roads as much as you can, anyway. They prefer to stay on snow covered trails. smile

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#169539 - 03/17/09 04:55 AM Re: Stupid Snowmobile Accident Today! [Re: Paul810]
SwampDonkey Offline
Veteran

Registered: 07/08/07
Posts: 1268
Loc: Northeastern Ontario, Canada
Thanks for the great advice Paul.

Mike

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#169622 - 03/18/09 01:45 AM Re: Stupid Snowmobile Accident Today! [Re: Paul810]
SwampDonkey Offline
Veteran

Registered: 07/08/07
Posts: 1268
Loc: Northeastern Ontario, Canada
Hey Paul810,

I had a look inside the tunnel of my sled today, I did not see any tunnel protectors and the track lugs are only about an inch below the cooling fins. Sometimes when I hit a bump at speed, I hear the track touch the tunnel/fins.

Maybe I need the track adjusted and I do not know if there is enough room for studs? I will have the dealer check it out.

Mike

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#169638 - 03/18/09 11:42 AM Re: Stupid Snowmobile Accident Today! [Re: SwampDonkey]
Paul810 Offline
Veteran

Registered: 03/02/03
Posts: 1428
Loc: NJ, USA
Originally Posted By: SwampDonkey


Maybe I need the track adjusted and I do not know if there is enough room for studs? I will have the dealer check it out.

Mike


Yea, if you've got a good dealership I would talk to one of the tech's there and see what they say. Best thing to do would be to have it studded, have the tunnel protectors added, and have the carbides changed to slightly deeper set all at one time. It won't be cheap, even if you did it yourself, but I feel it's worth it.

Also, If you're bottoming out the suspension often, you might need to re-adjust it for your weight as well.

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#169672 - 03/18/09 08:07 PM Re: Stupid Snowmobile Accident Today! [Re: Paul810]
James_Van_Artsdalen Offline
Addict

Registered: 09/13/07
Posts: 449
Loc: Texas
I agree with what others have said: the helmet needs to be replaced or serviced to have parts replaced.

A helmet is engineered to protect your head. It is not engineered to protect itself from a serious impact, and your impact was clearly serious. You can't necessarily tell if it's compromised just by looking at it: the critical parts aren't on the surface, inside or out. The helmet manufacturer probably has a web page with good info.

Also, any time you hit your head that hard a run by the hospital is a good idea ASAP. You may not notice a serious injury for as long as a couple of hours (see: Natasha Richardson). Ruptured spleens etc are also no good.

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