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Old 03-28-2013, 08:34 PM   #75316
NordieBoy
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So no mention of motorcycle tyres at all.
Picture of one cracked tyre and all Bridgestones are bad?

It's like the "All Trailwings are Deathwings" crap.

It also looks like it would have had to be a combination of extreme cold and a pointed impact on that road tyre...
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Old 03-28-2013, 09:39 PM   #75317
smilin jack
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Freezing Tires

Quote:
Originally Posted by NordieBoy View Post
So no mention of motorcycle tyres at all.
Picture of one cracked tyre and all Bridgestones are bad?

It's like the "All Trailwings are Deathwings" crap.

It also looks like it would have had to be a combination of extreme cold and a pointed impact on that road tyre...
Don't know about tires freezing, but my F-250 4x4 (235-16 Toyo load E) and toy hauler (235-15 Toyo load D) had flat spots on them for about an hour of driving after being parked over nite at Teslin, Yukon when the mercury read -72F with strong winds.

We drove jogging speed for several hours to get out of that cold valley to warmer places. Several valleys over it was only -42F and we could pick up speed. The locals said to not go very fast because springs or axles could break when hitting chuck holes etc. One of the trailer springs did break on the way home... from too much weight (Toyota Land Cruiser in the toy hauler and lots of carpenter tools).

Glad that spring broke behind the axle. A piece of firewood was inserted between the axle and frame and wired in place. That field repair lasted several thousand miles to home. New springs were installed there in a warm shop. It was a nice month long road trip to Anchorage for Christmas to visit family and picked up the Toyota and tools.

Dave
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Old 03-28-2013, 10:16 PM   #75318
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Quote:
Originally Posted by smilin jack View Post
...Several valleys over it was only -42F...
There's a sentence you don't see every day. 'Only' ...
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Old 03-29-2013, 05:47 AM   #75319
basketcase
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Quote:
Originally Posted by Kommando View Post
I believe it. Summer tires shouldn't even be stored in temperatures below freezing. They become brittle and slippery, like glass. Then they can shatter and/or crack, as you have seen.

A lot of people bad-mouth all-season cage tires as not being capable in the snow. They're not designed to be snow tires. They're simply designed to not become brittle and slick in freezing temps, while not vaporizing when heated up like many snow tires do. Moto tires are similar. If you see freezing temps, use tires rated for that.
"Summer tires?" Jeezum -- once again I've heard it all. Summer tires is as big a crock as the old prank of "winter air." Or the carpenter's prank of a "board stretcher," or the plumber's joke about "left-handed" pipe wrenches.

Dude - somebody has pee'd on your leg and convinced you it is raining.

The defining difference between a street tire and a rough terrain tire is the thread pattern. Rubber compound (softness or hardness) primarily impacts thread life (i.e., miles derived under use on the intended surface).

Off-road tires grip the terrain foremost due to thread pattern. Ambient temps have more influence on the terrain than on the tire. IOW, the terrain can be hot, dry, wet, or mushy, or frozen. The tire does not know the difference.

The thread pattern on street tires grip better on asphalt due to an increased contact patch. Rubber compound in street tires responds to increased temps due to impact stickability on asphalt surfaces, so hotter is better up to a point.

But all that said, the rubber does not know the difference in terms of low temps and cracking such as what was shown in those photos.

Those tires are either defective from the factory, or unbelievability old, but cold did not do that.
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Old 03-29-2013, 07:53 AM   #75320
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Quote:
Originally Posted by shu View Post
I've lived in Colorado nearly all my life, and I've never seen a tire, moto or car, that froze and broke. You may be right but it gets below freezing here a lot, from Sept to May.

........shu
That's kind of my point as well. In the teens here during the winter and no "broken" tires.
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Old 03-29-2013, 07:56 AM   #75321
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Question Raptor Petcock Fail ??? anyone seen this?

Gang
like others, Ifinally replaced the petcock on my IMS tank with the Yammie Raptor part. All was swell until recently. It leaks.
And, I can't really tell for certain where the fuel is getting by; I replaced the main gasket with a new one but it still leaks. Seems to be seeping around the seal of the valve itself but I am not sure.

if any of you have experience with this pls advise.

If I have to buy yet another petcock, which one will actually work??
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Old 03-29-2013, 08:02 AM   #75322
Bronco638
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I had an issue with my IMS petcock on my old DR350SE. I contacted IMS and they sent me a new one for free. That said, they sell replacements for $20 (last time I checked). That's pretty cheap.

EDIT: I see you've switched to the Raptor unit so you've modified the tank. The IMS unit won't work now. Never mind.
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Old 03-29-2013, 08:24 AM   #75323
ER70S-2
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Quote:
Originally Posted by Zapp22 View Post
Gang
like others, Ifinally replaced the petcock on my IMS tank with the Yammie Raptor part. All was swell until recently. It leaks.
And, I can't really tell for certain where the fuel is getting by; I replaced the main gasket with a new one but it still leaks. Seems to be seeping around the seal of the valve itself but I am not sure.

if any of you have experience with this pls advise.

If I have to buy yet another petcock, which one will actually work??
This might help, although Acerbis 5.3:

http://www.advrider.com/forums/showp...&postcount=108

P.S. I think someone recently said that a gasket cut from a tire tube would hold up to gasoline, in case you have to make a gasket with a larger surface area.
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ER70S-2 screwed with this post 03-29-2013 at 08:30 AM
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Old 03-29-2013, 08:53 AM   #75324
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Old 03-29-2013, 09:18 AM   #75325
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[QUOTE=basketcase;21060637]"Summer tires?" Jeezum -- once again I've heard it all. Summer tires is as big a crock as the old prank of "winter air." Or the carpenter's prank of a "board stretcher," or the plumber's joke about "left-handed" pipe wrenches.

The following sources disagree....

http://www.goodyear.com/en-US/tires/category/summer
http://www.popularmechanics.com/cars...summer-9647443
http://www.continental-tires.com/www.../summer-tires/

Most Major tire companies offer these(summer) compounds

And someone has asked for a motorcycle specific source...Please read the last paragraph on this page.

http://www.bridgestone.com/products/...ote/index.html
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Old 03-29-2013, 09:27 AM   #75326
Zapp22
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ok.
i guess the answer is "its bad".
like I said, its not a gasket issue - at least not a mount-gasket issue.
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Old 03-29-2013, 10:29 AM   #75327
Kommando
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Quote:
Originally Posted by shu View Post
I've lived in Colorado nearly all my life, and I've never seen a tire, moto or car, that froze and broke. You may be right but it gets below freezing here a lot, from Sept to May.

........shu
Temps get cold enough in some places on this planet that even M&S-rated all-season tires turn to a substance like black glass, and can possibly crack/shatter. Colorado aint one of those places. It doesn't typically get cold enough there.

In at least some provinces of Canada, many moto tires aren't even LEGAL to ride on during certain months, whether there is snow on the ground or not. Many moto tire compounds are not M&S-rated all-season compounds.
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Old 03-29-2013, 11:12 AM   #75328
FatChance
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Quote:
Originally Posted by Kommando View Post
Colorado aint one of those places. It doesn't typically get cold enough there.
Not typically encountered, but the state record is -61F...
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Old 03-29-2013, 11:36 AM   #75329
disconnected
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does anybody have a rear brake pedal for sale.? I crashed and bent mine.
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Old 03-29-2013, 11:48 AM   #75330
bross
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Quote:
Originally Posted by FatChance View Post
Not typically encountered, but the state record is -61F...
Pah, we don't even need our winter parkas for that up here in Canada. Seriously though, the coldest I ever worked in when on the rigs was -55C (-67F), WITH a breeze. You were good for about 20 minutes in that before you had to head inside to warm up. Never seen tires crack like that and spent over 30 years with winter temps regularly hovering around -35C or colder.
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