Supercross Flat Tires?

ginger969
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ginger969
Edited Date/Time 3/25/2016 6:56pm
Not sure if someone already posted on this but are the teams doing something different now that is causing all these flats? I don't recall this many flats in the past haha
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mattyhamz2 3/23/2016 11:20am
3/23/2016 11:20am
It's the shitty hard dirt. Getting square edges. Plus last week was pretty Rocky.
Big Lenny
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Big Lenny 3/23/2016 11:24am
3/23/2016 11:24am
I thought they had that all solved years ago...
peelout
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peelout 3/23/2016 11:24am
3/23/2016 11:24am
torquing their sprocket bolts too tight, gotta have some flex in those suckers
dazzlindino 3/23/2016 11:27am
3/23/2016 11:27am
...they should go to 17" rims...

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willieboi
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willieboi 3/23/2016 11:31am
3/23/2016 11:31am
Tire design related. Manufacturers are pushing the design performance limits. It's a sign of good things to come for consumers...sucks for riders...
ginger969
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ginger969 3/23/2016 11:34am
3/23/2016 11:34am
willieboi wrote:
Tire design related. Manufacturers are pushing the design performance limits. It's a sign of good things to come for consumers...sucks for riders...
Something like that makes sense, thanks!

I was like whyyyy are all these tires going flat randomly lol
MR. X
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MR. X 3/23/2016 11:45am
3/23/2016 11:45am
Sounds like someone needs a tire slime sponsor.
nytsmaC
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nytsmaC 3/23/2016 11:49am
3/23/2016 11:49am Edited Date/Time 3/23/2016 11:49am
I'm surprised at the guys who are pitting to change wheels late in the race. Baggett got a flat with what, 3 or 4 laps remaining? He pulled in to get it fixed and ended up finishing 3 laps down.

I'm not sure what place he was in when he pulled off, but I'd think if he took it slow and finished the race on the flat he would not have lost nearly as much time.

Same with one or two of the 250 riders in Toronto.
willieboi
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willieboi 3/23/2016 11:51am
3/23/2016 11:51am
I think we are trying to find the root cause without investigating the actual slice, hole, puncture in the tire. What if dirt as stuck in the valve stem not allowing it to close properly? A broken spoke pushing thru? A nail? Maybe the teams are using a super small molecular gas that seeps thru the elastomer matrix?
mumbles
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mumbles 3/23/2016 12:02pm
3/23/2016 12:02pm
After reading DVs reply on the tire issue what he said makes since. I wonder if the tire manufactures have tried like a dual purpose or trials type of tire in testing on hard pack SX tracks? Like DVs GP tire story. I lot of small close knobs might be the ticket.
willieboi
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willieboi 3/23/2016 12:09pm
3/23/2016 12:09pm
mumbles wrote:
After reading DVs reply on the tire issue what he said makes since. I wonder if the tire manufactures have tried like a dual purpose or...
After reading DVs reply on the tire issue what he said makes since. I wonder if the tire manufactures have tried like a dual purpose or trials type of tire in testing on hard pack SX tracks? Like DVs GP tire story. I lot of small close knobs might be the ticket.
He mentioned cutting the wheel down on a lathe which rounds the knobs in a convex shape and I doubt that improves bite and traction. I think the knobs bend and result in a mechanical lock with the dirt or scoop action that improve traction but stresses the material causing tears.
GuyB
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GuyB 3/23/2016 12:11pm
3/23/2016 12:11pm
Rocks in the track.
willieboi
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willieboi 3/23/2016 1:21pm
3/23/2016 1:21pm
GuyB wrote:
Rocks in the track.
not the rocks fault for a poor tire choice decision. Dunlop shows up in a big rig with techs but can't get the tire choice correct. Oh and they have been there for a couple days so they have already observed the rock. And to add they probably have notes from previous years.
willieboi
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willieboi 3/23/2016 1:30pm
3/23/2016 1:30pm
Guy,
Can you get pictures posted for the tires in question?
moto0852
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moto0852 3/23/2016 1:30pm
3/23/2016 1:30pm Edited Date/Time 3/23/2016 1:31pm
GuyB wrote:
Rocks in the track.
willieboi wrote:
not the rocks fault for a poor tire choice decision. Dunlop shows up in a big rig with techs but can't get the tire choice correct...
not the rocks fault for a poor tire choice decision. Dunlop shows up in a big rig with techs but can't get the tire choice correct. Oh and they have been there for a couple days so they have already observed the rock. And to add they probably have notes from previous years.
Lol...yeah like its the rocks fault. Could you imagine in a desert race if someone said that? Run the right tire with the right pressure. All the flats so far seem to be pinch flats. that's operator error on tire and psi selection.

As is always the case, I defer to the master... DV12

dazzlindino 3/23/2016 1:35pm
3/23/2016 1:35pm
...woulda never happened.... runnin' a 17x5.00 Trelleborg!...

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Andy_Greenney 3/23/2016 1:49pm
3/23/2016 1:49pm


I've heard inferior tennis balls were to blame
Johnny Depp
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Johnny Depp 3/23/2016 2:21pm
3/23/2016 2:21pm Edited Date/Time 3/23/2016 2:22pm
It happens rarely, and I'm surprised the teams even had spare wheels ready to mount in the stadium, but that wheel changing process could stand a ton of improvement compared to road racing. Slow as molasses. Might as well ride with the flat.
generallee121 3/23/2016 6:21pm
3/23/2016 6:21pm Edited Date/Time 3/23/2016 6:24pm
why when I go to the actual pulpmx.com website is DVs most recent article no where to be found? Yet someone here linked it?

Edited: nvm I see that's its running on the scrolling banner but not actually listed
RF Motorsports USA 3/23/2016 6:24pm
3/23/2016 6:24pm
They all have the option to Run Mouse Tubes "foam Inserts" I know a lot of them do run them outdoors.
GeorgiePorgie 3/23/2016 6:38pm
3/23/2016 6:38pm
Andy_Greenney wrote:
[img]https://p.vitalmx.com/photos/forums/2016/03/23/129047/s1200_image.jpg[/img] I've heard inferior tennis balls were to blame


I've heard inferior tennis balls were to blame
Don't gncc riders use a similar idea? So when you lose one ball you don't lose the whole tire. I cant think of the name of those things. I do wonder why pro teams don't use them.
kevin204
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kevin204 3/23/2016 7:12pm
3/23/2016 7:12pm
GuyB wrote:
Rocks in the track.
In Toronto, after the 250 main but before the 450 main, I saw guys digging something out of the sand section. Hard to see what it was from 500 level seating, but my guess is it had something to do with the flats. It looked more like a wood type piece, rather than a rock.
stupidnslow 3/23/2016 7:37pm
3/23/2016 7:37pm
Andy_Greenney wrote:
[img]https://p.vitalmx.com/photos/forums/2016/03/23/129047/s1200_image.jpg[/img] I've heard inferior tennis balls were to blame


I've heard inferior tennis balls were to blame
GeorgiePorgie wrote:
Don't gncc riders use a similar idea? So when you lose one ball you don't lose the whole tire. I cant think of the name of...
Don't gncc riders use a similar idea? So when you lose one ball you don't lose the whole tire. I cant think of the name of those things. I do wonder why pro teams don't use them.
Most of the GNCC pro guys use the usual Bib Mousse, but some use what you're thinking of which is Tire Balls. There's a new one now for quads and working their way into the bike side called Tire Blocks.
Steadman
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Steadman 3/23/2016 7:38pm
3/23/2016 7:38pm
GuyB wrote:
Rocks in the track.
kevin204 wrote:
In Toronto, after the 250 main but before the 450 main, I saw guys digging something out of the sand section. Hard to see what it...
In Toronto, after the 250 main but before the 450 main, I saw guys digging something out of the sand section. Hard to see what it was from 500 level seating, but my guess is it had something to do with the flats. It looked more like a wood type piece, rather than a rock.
I had a perfect view of that. It was a massive rock. They needed a shovel to dig it out. It was very large, with square edges, and right in one of the areas where riders were landing from that big single jump. Crew members were pulling out large rocks all night.

Like GuyB said. Rocks.
Berm
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Berm 3/23/2016 8:41pm
3/23/2016 8:41pm
GeorgiePorgie wrote:
Don't gncc riders use a similar idea? So when you lose one ball you don't lose the whole tire. I cant think of the name of...
Don't gncc riders use a similar idea? So when you lose one ball you don't lose the whole tire. I cant think of the name of those things. I do wonder why pro teams don't use them.
Weight. That's a lot of extra weight in the tire, the one place you definitely don't want extra weight.
Berm
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Berm 3/23/2016 8:43pm
3/23/2016 8:43pm
Steadman wrote:
I had a perfect view of that. It was a massive rock. They needed a shovel to dig it out. It was very large, with square...
I had a perfect view of that. It was a massive rock. They needed a shovel to dig it out. It was very large, with square edges, and right in one of the areas where riders were landing from that big single jump. Crew members were pulling out large rocks all night.

Like GuyB said. Rocks.
GuyB should have asked one of his buddies to take a picture of that rock.

I kid, I kid. I doubt we'll see any drastic changes for the upcoming races in terms of tire selection.
Digger437
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Digger437 3/23/2016 8:55pm
3/23/2016 8:55pm
Berm I suggest they use solid pneumatics like we use on our skidsteers for work, no flats and so what if they only weigh a couple hundred pounds more?
Berm
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Berm 3/23/2016 9:18pm
3/23/2016 9:18pm
Digger437 wrote:
Berm I suggest they use solid pneumatics like we use on our skidsteers for work, no flats and so what if they only weigh a couple...
Berm I suggest they use solid pneumatics like we use on our skidsteers for work, no flats and so what if they only weigh a couple hundred pounds more?
might as well switch to ATV's. Then they have 2 tires in front and 2 tires in back. You are carrying your own spare!

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