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406 tubeless rims

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RoyMacdonald View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote RoyMacdonald Quote  Post ReplyReply Direct Link To This Post Posted: 06 June 2019 at 7:24pm
Originally posted by kim kim wrote:

FWIW, I've had no real problems with Pro One (admittedly using a lightweight inner tube) on a 406 Kinlin XR240. It's a bit on the tight side, but it goes on just fine.

OTOH, I've yet to manage to get one to seat on a 559 rim successfully. I've tried three different rims and two different rim tapes, lubrication, harsh language, massive overpressure, getting a replacement tyre because by that point I was sure it was a manufacturing defect, etc. I've given up and gone back to Durano. If anyone knows of a combination that actually works, I'd be interested to hear about it...

What was the problem with the seating Kim?

I've just put the 28-559 onto the new rim for the Great White and it was very hard. The most difficult part was getting the first bead onto the rim. Took two people and the Kool Mate with brute force. The second bead I managed on my own with the help of the Kool Mate but it is not as perfectly equally seated as I normally get. It looks to be about a couple of mm out at one point looking at what I take to be the seating mark on the tyre. Does anyone think it matters? I've had no success in reseating it. Just seems to take that position. It is so tight on the rim though I can't see it ever coming off.

I think if I was running it tubeless it would seat better possibly. But I've read it's not advisable to run tubeless with rim brakes because they heat the tyre up which can cause it to come off. Hard to imagine anything making them come off with that degree of tightness though.

All the best
Roy




Edited by RoyMacdonald - 06 June 2019 at 7:49pm
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RoyMacdonald View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote RoyMacdonald Quote  Post ReplyReply Direct Link To This Post Posted: 06 June 2019 at 7:43pm
I just noticed that they tyre is equal on opposite sides but not all round. On both sides where there is the Pro 1 logo it is out and where there is no logo it is seated where I expected.


Roy
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kim View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote kim Quote  Post ReplyReply Direct Link To This Post Posted: 06 June 2019 at 8:53pm
Yes, that's exactly the problem I was having. Result is enough of a bulge (5mm or so) that any power savings from the fast-rolling tyre are cancelled out by incessant ratting of the rider's BRANEZ/fillings/eyeballs/etc:







(Rim pictured is a Mavic XM117.)

When a Durano is fitted, the moulding line below the logo is visible all the way round the tyre.

Edited by kim - 06 June 2019 at 9:02pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote RoyMacdonald Quote  Post ReplyReply Direct Link To This Post Posted: 06 June 2019 at 9:15pm
Thanks Kim. Looks to be in exactly the same place as mine as well. It's strange because my 28-540 fitted just fine and without issue with a tube.

All the best.
Roy 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote RoyMacdonald Quote  Post ReplyReply Direct Link To This Post Posted: 07 June 2019 at 8:29pm
Kim, I have improved the fit somewhat by deflating then taping the bumps down and reflating the tyre. The idea being to push the tyre further down on the rim at that point when it's re-inflated. It's about 1.5 mm out of round now instead of 3 mm. I've ordered a Continental Grand Prix slick though to see how that fits. I notice it's a higher pressure tyre than the Pro 1 so it may have less rolling resistance. 

All the best. 
Roy




Edited by RoyMacdonald - 07 June 2019 at 8:31pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote RoyMacdonald Quote  Post ReplyReply Direct Link To This Post Posted: 08 June 2019 at 2:16pm
Overnight the tyre has improved and is now 1 mm if that out and looks pretty well seated correctly.

I did read up on the Schwalbe web site and they say to use soapy water or their easy fit solution to fit the Pro 1. I must confess I was thinking in standard tyre fitting mode because I was fitting a tube. They say the Pro 1 has a special shaped bead to make it seal against the rim in tubeless mode. I have some Easy Fit as well. I'll make sure I use it next time.

Roy
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Post Options Post Options   Thanks (0) Thanks(0)   Quote RoyMacdonald Quote  Post ReplyReply Direct Link To This Post Posted: 10 June 2019 at 7:01pm
I just did the 406, and dry the first bead looked to be as hard as the 559 was, so I got out the Easy Fit and I was able to put the first bead on the rim by hand. Then I did the second bead on my own with the aid of the Kool Tool. Took a fraction of the time the 559 did with two people.

However the tyre is out of true in exactly the same way the 559 was, and in the exactly the same places. At the logos. I seated it equally at low pressure but when I pumped it up it went out of place again. I've pumped it up to full pressure and will look at it tomorrow. 

They are designed to be popped into place at over 200 psi and that is how Daniel Fenn and co were putting theirs on. Maybe that has something to do with the issue? 

Tempted to run them tubeless even though I'm using rim brakes. I could fit one of Mike's mono forks on the front which would have a disc brake mount on I guess. I did take the precaution of using a rim brake hub for the wheels so that I could use the rims on the Fujin if I wanted to. The rear frame of the D6 is not at all straightforward for the fitting of a disc though.

Roy
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