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Old 03-28-2013, 11:16 PM   #75301
Krusty ...
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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, 06:47 AM   #75302
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, 08:53 AM   #75303
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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, 08:56 AM   #75304
Zapp22
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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, 09:02 AM   #75305
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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, 09:24 AM   #75306
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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 09:30 AM
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Old 03-29-2013, 09:53 AM   #75307
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Old 03-29-2013, 10:18 AM   #75308
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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, 10:27 AM   #75309
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, 11:29 AM   #75310
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, 12:12 PM   #75311
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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, 12:36 PM   #75312
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, 12:48 PM   #75313
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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Old 03-29-2013, 12:54 PM   #75314
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Quote:
Originally Posted by Kommando View Post
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.
Several years ago I had to buy a tire for my DL650 while riding in Mexico. Since most bikes in country are smaller ones its damned hard to find tires for big bikes down there but I finally located the right size at the BMW dealer in Hemosila. I ended up with a Pirelli Scorpion that worked great on the DL during the rest of that summer and gave me the best durability I'd ever seen. I liked it so much that I tried to replace it with another back in the USA. Sorry Charlie, that tire is not available north of the border because the "compound was not approved for US winter temperatures"
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Old 03-29-2013, 02:20 PM   #75315
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Quote:
Originally Posted by oldschoolsk8ter View Post
They also say...

Only specially trained persons should mount tires.

To seat tire bead,never exceed the following pressure:
Motorcycle Tires : Do not exceed 57 P.S.I.

Use extreme caution when riding on new tires.
Avoid sudden acceleration,maximum braking,and hard cornering for first 100 miles.


Purely legal, covering their asses, spiel.
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