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Post by midlifecrisisrd on Feb 11, 2015 19:20:10 GMT 1
As far as I understood it it is not to do with the alloy being porous but the lip the tyre has to push over to seat properly.
It was a thing years ago with caravan wheels.
As the non tubeless wheel has a smaller lip the tyre can move off the edge causing a massive air leak. If it had a tube no air would get out.
Just because something does not fail does not mean it won't or that the safety margin has not been significantly reduced.
would we fit alloy bolts to brake components just because you can squeeze the lever and nothing snaps?
Steve
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Post by dave1963 on Feb 11, 2015 20:53:09 GMT 1
lots of good points i have now ordered some tubes to fit to mine just to be safe
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Post by arrow on Feb 11, 2015 20:54:26 GMT 1
Just because something does not fail does not mean it won't or that the safety margin has not been significantly reduced. Steve How true. when people send me their '350' pump and I have to tell them its actually a 250 pump they say its been ok for years. I explain it would simply not be right for me to send it back as the correct part. I don't want a member of their family contacting me later on saying the bike spat my hubby off on a bad bend and you sent the wrong pump back for the bike.
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Post by ulsta on Feb 13, 2015 6:38:49 GMT 1
I remember this discussion coming up years ago. You get different rim types used on motorcycle wheels, WM for tubed type tyres, MT and MTH2 for tubeless tyres. the MTH2 rims have a lip to help stop the tyre falling into the well if it deflates.
LC's have MT type rims. The rim is designed for tubeless tyres. Yamaha stated that tubes should be fitted though. As far as I can recall, that was because the way the wheel was manufactured meant the wheel could be porous.
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Post by earthman on Nov 18, 2017 10:01:52 GMT 1
Reading this old thread reminds me of my experience back in the eighties,first flat I got, the guy who worked at the bike breakers close by removed the tyre and fitted a tube. I were concerned at the time, automatically thinking that these wheels were meant to be used with tubeless tyres, he said that it would be fine with a tube.
Looking at my old Haynes manual,it does show the inner tubes.
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Post by Tobyjugs on Nov 18, 2017 12:37:33 GMT 1
I bought an LC and i think it was raced. The front wheel had very slow puncture. When i eventually got around to fixing it, i was shocked to there was no inner tube. I fitted a tube and the problem was solved. A couple years down the road i decided to do some track time and was thinking about buying some track orientated track tyres. I visited a man who's speciality is bike tyres and sells a lot of race tyres.
He advised me to stick with road tyres and advised tubeless BT45's. I started telling him my own experience and what was being said on here. He explained that the inner tube generates extra heat which is bad for track use. He knew about the controversy. He also told me to put some latex fluid in the tyres which is used in mountain bike tubes. Those tyres have done 3 hours track time and were still getting too hot, they are almost worn out from road use. They were installed at the beginning of this year.
Everyone has to make their own choice on this matter. I have rims with inner tubes but when they need to be replaced they will go tubeless as long as the the MT sign is on the rim.
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Post by paulincayman on Nov 18, 2017 13:20:18 GMT 1
94230-18084. 3.00-18. Surely that's evidence enough?
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Post by earthman on Nov 18, 2017 13:31:01 GMT 1
94230-18084. 3.00-18. Surely that's evidence enough? Sorry but I'm not sure what all that means??
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Post by paulincayman on Nov 18, 2017 13:39:35 GMT 1
Its from the parts fiche, , item part number, description and tube size , reads : 10. 94230-18084 Tube (3.00-18)
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Post by JonW on Nov 19, 2017 8:41:09 GMT 1
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Post by Deleted on Nov 20, 2017 10:20:17 GMT 1
Has anyone actually experienced a problem (apart from slowly deflating tyres) by running without tubes ? I'm not suggesting anything just asking for peoples actual experiences
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Post by earthman on Nov 20, 2017 11:18:06 GMT 1
Has anyone actually experienced a problem (apart from slowly deflating tyres) by running without tubes ? I'm not suggesting anything just asking for peoples actual experiences I didn't even experience any slow deflation on mine back in the day, I didn't even know that a previous owner had removed the tubes. I think that most riders would see cast/alloy wheels and automatically assume that tubeless tyres were fitted.
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Post by JonW on Nov 21, 2017 5:06:28 GMT 1
Someone mentioned they could deflate very quickly in use, not slow while parked etc.
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Post by Deleted on Nov 21, 2017 9:58:53 GMT 1
But has anyone actually had that happen ?
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Post by JonW on Nov 21, 2017 12:19:44 GMT 1
ISTR that the person who mentioned it saw one deflate.
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Post by donkeychomp on Nov 21, 2017 23:19:06 GMT 1
Hmm. A while back I was restoring and RD400 for a friend and he got some BT 45's for it, but no inner tubes, so I bought some. Took the wheels, tyres and tubes to get fitted and the chap doing it said tubes not needed. My last LC also got new BT's, also without tubes and I never had an issue with the bike. Latest LC is the same...
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Post by JonW on Nov 22, 2017 2:35:42 GMT 1
The LC350 wheel was made by Enkei and the 250 by someone else (its unbranded like the front), maybe they differ? Either way Yamaha say you need tubes... so, imho you need tubes...
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Post by pdxjim on Jun 15, 2019 23:00:49 GMT 1
Pics from my 4U0 JDM RD350LC. Rear wheel with Enkei makers mark, front is unbranded. As seen above, there is no proper lip at the rim ... at least not what I would expect to see. This was setup with an ancient Dunlop TT100 and no tube. Not saying it's correct, but earlier in this thread there was mention of the alleged "TUBELESS TIRE APPLICABLE" labeling although no-one could recall ever having seen it in the flesh.
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Post by bare on Jun 16, 2019 22:57:05 GMT 1
What's the Hole in rims' edge?
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Post by shaunthe2nd on Jun 16, 2019 22:59:16 GMT 1
You need tubes for sure.
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Post by pdxjim on Jun 16, 2019 23:09:57 GMT 1
What's the Hole in rims' edge? Dunno what you mean?
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Post by bare on Jun 17, 2019 2:57:37 GMT 1
?? Second pix there is hole or a Dimple that clearly wasn't designed in. Damage.. or?
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Post by tacky1 on Jun 17, 2019 3:01:49 GMT 1
Shit, I run my tires tubeless on my LC. I didn’t even think to look and see if the rims are tubeless or not!!
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Post by pdxjim on Jun 17, 2019 3:17:50 GMT 1
?? Second pix there is hole or a Dimple that clearly wasn't designed in. Damage.. or? This? That’s just dirt or decomposed tire or tube or whatever. I just pulled the 20yr old tire off and hadn’t cleaned it yet
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Post by Deleted on Jun 17, 2019 5:48:47 GMT 1
Shit, I run my tires tubeless on my LC. I didn’t even think to look and see if the rims are tubeless or not!! Yeah... me too, and I've had no problems! It gets some stick, and they've stayed on so far. My tyre guy who specializes in motorcycle tyres told me the rims were suitable for tubeless tyres... good enough for me.
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