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Butt ugly tyre !!

E

eyspy

Joined Feb 2009
180 Posts | 0+
Downunder !
Damm this thing is ugly !!

I bit the bullit today after about 2 years of thinking about the Pirrelli MT43 and all the hype that goes with it, I thought 'Pluck it !!', I will never know if I don't try it.

My reasons for wanting one are:
1. Hill climbing in the alps in OZ over wet slippery rocks (and muddy)
2. I love speedway sliding and thought this would be better than a knobbly
3. Long wear

I stopped at our local track on the way back from the dealers and went for a few quick laps on our speedway track which is still un complete ( we are waiting for the surface of dolomite fines to be layed down)
We have had a bit or rain over the past week and the track was not wet but still holding a lot of moisture (would have been great for MX today).
Dammed if I could get it to slide out decently like I would have hoped. I put it down to NEW tyre and too much moisture on track.
So I thought, bugger it, I'll take her for a spin on the MX track. Same thing she just hooked up and gripped like crazy, all she wanted to do was wheelstand (fine by me :))

May have to wait for the track to dry out a bit I think. My mate who was out there doing some grader work, and is an old pro at speedway took her for a spin as well with the same results. He was scratching his head and said " You would never have know you were on a trials tyre " Which bodes well for the times I do want it to act like a MX bike and grip.

So the jury is still out on performance. I will report back when I have spent some more time with her.



100_5482.jpg
 
i saw one off those tyres at the sand drags on a kx500 and it was tracking up real well suprised me as well how it tracked up i thought it would just spin
 
Now since it's dark cold and late, I have been surfing the net on this tyre. Looks like I need to bump the air up a little to get the desired sliding and leave it down for incredible hookup.

I had 7 psi on the speedway track which just wanted to GRIP GRIP GRIP !!
Might bump her up to 12 psi and try sliding then.
 
Pressure makes all the difference with these (and many other) tires. I run 8 PSI on the trails. When it is up above 12 PSI it will start slipping if that is what you want. Since I ride slow on technical trails I don't care to have the tire step out on me. On looser surfaces like gravel on hardpan, it will slide a bit at speed. In the mud too a bit, but predictably IMO. Like I said I generally don't try or want that so I can't speak to it - I ride slow and mild.
 
No Pirellis around here. Picking up a IRC TROIIR today for a trip to Idaho. I feel like I'm going back to 1975. I am worried about low pressure killing these soft rims. Strictly dirt no dual sport street with this tire.
 
A lot of folks go with the tublilss system with trials tires to keep from getting pinch flats. Have you thought about that?
 
tahoeacr said:
No Pirellis around here. Picking up a IRC TROIIR today for a trip to Idaho. I feel like I'm going back to 1975. I am worried about low pressure killing these soft rims. Strictly dirt no dual sport street with this tire.
Click to expand...
The reason I went with the Pirelli MT43 instead of the other trials tires was because this one is not so soft and it will last on the pavement. The consensus of others who run the softer trials tires (Michelin, Dunlop) is that they would not last one 50 mile round trip.

I have over 300 miles on the tire so far with minimal wear. I run 20+ PSI on the street, then when I get to the trails I drop the rear down to 8 to 10 PSI, and the front about the same. Then when I am done I just ride home on the low pressure. I notice the rear is a bit squirmy/flexible at those low pressures at speed on pavement, but if you keep it sane they you will be okay.

So far I have had no problems with the rims. But then I don't ride hard or fast. I have hit a few hard obstacles where I felt the tire give quite a bit, but no real damage to the rims that I can see.

[youtube:2c29px4j]http://www.youtube.com/watch?v=K2-bKMScgIE[/youtube:2c29px4j]
 
DaleEO said:
A lot of folks go with the tublilss system with trials tires to keep from getting pinch flats. Have you thought about that?
Click to expand...
I have a Tubliss on the rear - added it when I got the new tire. So far it works just fine.
 
The first time I used my Vholdr camera I knocked it off within the first ten minutes and got some great footage of my camel back!!!
 
DaleEO said:
A lot of folks go with the tublilss system with trials tires to keep from getting pinch flats. Have you thought about that?
Click to expand...

No I havn't because I know diddly squat about the system.

None of my riding mates have it, not do they know anyone that has it.

What does it cost? how effective is it? what are the cons? Can you still lose the air from the system ?

Convince me and I will readily try it ....
 
CODEMONKEY

You included a vid in your post. With no comment I was wondering what it was about ? Is that first one going over the log with a knobbly and the second with a MT43 ? If yes, then it certainly looked a lot smoother !
 
eyspy said:
CODEMONKEY

You included a vid in your post. With no comment I was wondering what it was about ? Is that first one going over the log with a knobbly and the second with a MT43 ? If yes, then it certainly looked a lot smoother !
Click to expand...

Both were the Tubliss MT43 on the rear and a tubed knobby on the front. The first one I picked a stupid line and hit the branch with my face.

It wasn't intended to show any skill or smoothness on my part, just that I have hit an obstacle with my tires at low pressure (8 PSI) and not dented the rims. I have hit things faster than that too - that vid just has an obvious bump. As the vid showed, I ride at a mild pace, in part because I suck off-road, in part because I don't feel the need for speed - I am challenged enough by a nice trail.
 
The TuBliss system is about $100.00. I think it's the only way to go for Trials or Knobby tires.
I have the system front and rear on my 09 YZ250 and 010 FE 570.
You do have to follow instructions on mounting. Once you learn the procedure it's easier than a tube and tire change. I did have a problem on dismounting a worn out tire, I hooked the TuBliss red inter tire with the tire iron and damaged the inter red tire. I have shorten the tire iron about 1/4 inch now the iron won't grab the red inter tire. You must read and follow directions to be successful with the system. Check tire pressure before each ride, the tube type tires leak a little air. Jeff at Neutech TuBliss is great to work with on replacement pieces if needed.
I have a new IRC trials tire sitting here, I was going to put on the 570 but can't bring myself to mount it on the Husaberg. It works great with the knobby and low pressure 8 to 12psi.
I have worn out about four trials tires on two stroke KTM's with just OK success.
I have not used a trials tire with the TuBliss system yet.
I ordered a 18" rear wheel for the YZ and a TuBliss system so the YZ will get the trials tire. These trials tire work great as long as you use them for riding like a trials bike vertical, when you start leaning toward horizontal the tire WILL put you down hard. If the ground is silty becareful on lean angle and braking
Trials tires will go through rocks, roots, rivers and all the other narly trail stuff great and the biggest plus is they are easy on trails. You can run very low tire pressure 6 lbs this is what makes them work and what they are made for (wrap around tire)to the point of damaging rims but they sure hook up great. I do like them but don't get to aggressive with them.
I wonder if the trials tire with the TuBliss system would run cooler on the pavement. The friction from a tube and trials tire creates very high heat in the Trials tire. If someone has run a trials tire with the TuBliss system on the pavement and check the heat buildup in the tire let us know the results
 
Haskell said:
I wonder if the trials tire with the TuBliss system would run cooler on the pavement. The fiction from a tube and trials tire creates very high heat in the Trials tire. If someone has run a trials tire with the TuBliss system on the pavement and check the heat buildup in the tire let us know the results
Click to expand...
I run 17 miles each way to my little patch of trails where I practice. I have not noticed any heat buildup, although I didn't pay that much attention to that specifically. I will try to remember to check next time. I do seem to recall that once I got to the trails with the knobby it was pretty warm - and that was with a tube.
 
CodeMonkey said:
tahoeacr said:
No Pirellis around here. Picking up a IRC TROIIR today for a trip to Idaho. I feel like I'm going back to 1975. I am worried about low pressure killing these soft rims. Strictly dirt no dual sport street with this tire.
Click to expand...
The reason I went with the Pirelli MT43 instead of the other trials tires was because this one is not so soft and it will last on the pavement. The consensus of others who run the softer trials tires (Michelin, Dunlop) is that they would not last one 50 mile round trip.

]
Click to expand...


I think you might be right. This TR0II IRC is so fricken soft I hope it lasts all week. Just holding the rim on the garage floor then turning it to line it up with the swingarm you can feel the tread sticking. It is a radial competition tire. I will report back when I get back from Idaho.
 
OK

I am going to go out on a limb here.

Point 1. From what I can tell just looking up the 'Tubliss' system on the net, it is just a method of sealing off the points where the spokes protrude through the rims. Once sealed off just use a tubeless valve and you can then run any standard tyre ?

Please correct me if I am wrong in my thinking anywhere.

OK

Point 2. You don't run sealant in a car tyre like they suggest, so why run it in the bike tyre ?

If all what I am saying is correct so far, then all I have to do is seal those points of air entry ? correct ???

If I can save a buck by DIY then I will.
Here is where my thought process is leading...

Why not get a piece of rubber (lets say 1mm thick and about 25mm wide) , then a tube of silastic from the hardware and glue that piece of rubber all the way around your rim on the inside over the spoke area. Then when it's dry smear some more over the top sealing all the edges.

Bung a tubeless valve in and in away you go !
Right, now tell me why that won't work and put me back in my corner please......

I anticipate one problem that may be bought up, and that's the mess to change a spoke if needed. True, it would be a bit harder, but not impossible, but in 35 years of riding I have never had to do a spoke yet !

Why, why, why, won't this work :?: :?:

My guess is I could do both front and rear rims for under $20
 
Thanks Bushmechanic

Thought I was on the right track. As soon as I get (if) my first puncture, I'm heading to my workshop and trying one of the methods for tubeless. Until then if it aint broke, don't fix it !
 
Over the years lots of people have done a DIY tubeless. Some with success, some not so much. To each their own.

With my Tubliss I have not been running sealant yet. So far everything is fine.

One of the advantages of the Neutech Tubliss is that the small tube grips/seals the tire all the way around the rim, not just at the rim lock - so it serves another purpose besides sealing the spokes. If they were just sealing the spokes their rim tape would probably be enough for that and/or you would not need to maintain the high pressure.

They do recommend sealant, but it doesn't seem to be absolutely necessary.
 
Hot Damm !!! This tyre may be ugly but she is friggin good !!

The temptation was too great, even though the better half is about to deliver and I am meant to stick close by, I could not wait for a decent ride to test the tyres and bike hot start fix.

First it looks like hot start prob has been solved by replace the starter motor torque convertor (hopefully stays that way).

I took the bike to the MX track again still with about 6 psi in it. She just hooks up big time for my style of riding. Wheelies now with the twitch of the throttle due to lack of wheel spin and hooking up. Then left the track and did some drifting on some loose gravelly dirt roads and was not disappointed. Feeling good and taking advantage of my stolen leave of absence, I hit my fav tight single trail with rocks, roots, sand and mud. **** !! The harder I went the more she gripped !! I felt like I was on rails, my confidence kept growing and pretty soon I thought this tyre is friggin unbelievable. Just glides over everything with that little an air pressure, like on a cushion. Not once did I feel it want to let go.

This tyre is going to be ideal for my next trip to the Victorian Alps.

So for the moment I don't care what it looks like, I don't care if I get sniggers behind my back, I'll jsut bide my time for when I am waiting at the top of a massive hill climb waiting for the knobby riders to finish their struggle.
 

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