Page Index Toggle Pages: 1 Send TopicPrint
Hot Topic (More than 10 Replies) Flat with Avon AM26's Tubeless on Snow Flake rims (Read 250 times)
Mrclubike
God Member
*****
Offline



Posts: 869
Location: O'Fallon, MO USA
Joined: 09/28/14
Gender: Male
Flat with Avon AM26's Tubeless on Snow Flake rims
10/01/18 at 20:21:55
Post Tools
This weekend on our fall trip to Arkansas I had a flat tire on the rear tire
I run Avon AM26's front and rear with NO tubes
Some how picked up a piece of 10mm wide  by 25mm long 2mm thick steel banding
It went all the way thru so it made a cut not just a hole like a nail
The tire did not go immediately flat but was very low
I start feeling the rear getting squirmy like on grooved pavement
So i pulled over to check it out and sure enough it was very low
We put a Stop & GO mushroom plug in it
But it was still leaking so we needed  to get a proper patch
We found an auto parts store 10 miles away and headed there
Once there we were able to get a proper patch to install inside the tire
all went just fine
We were able to demount the tire
Patch   and remount it
The tire reseated  easily using a CyclePump
We pumped  it up to about 50 psi and just let it sit until it seated
Was able to ride 450 miles back home
And yes a new tire is on order no reason to press my luck
I will start carrying proper patches and   plugs and maybe inner tubes 
  

IMG_1001cr.jpg ( 200 KB | 9 Downloads )
IMG_1001cr.jpg

Buzzing along on my tubeless 82 R65
Industrial mobile equipment Mechanic  for over 35years  
Back to top
 
IP Logged
 
Mrclubike
God Member
*****
Offline



Posts: 869
Location: O'Fallon, MO USA
Joined: 09/28/14
Gender: Male
Re: Having a Flat With Tubeless Snow Flake
Reply #1 - 10/01/18 at 20:27:08
Post Tools
Here is the plugs we used to temporary  repair until we got proper patches
  

tire_plug.PNG ( 192 KB | 8 Downloads )
tire_plug.PNG

Buzzing along on my tubeless 82 R65
Industrial mobile equipment Mechanic  for over 35years  
Back to top
 
IP Logged
 
Mrclubike
God Member
*****
Offline



Posts: 869
Location: O'Fallon, MO USA
Joined: 09/28/14
Gender: Male
Re: Having a Flat With Tubeless Snow Flake
Reply #2 - 10/01/18 at 20:31:46
Post Tools
Even though I carry the hand pump that BMW supplied with the bike we also carry this
The hand pump could get you back on the road with tubes
but I am not sure if it would  work   to reseat tubeless tires
  

Cycle_pump.PNG ( 476 KB | 5 Downloads )
Cycle_pump.PNG

Buzzing along on my tubeless 82 R65
Industrial mobile equipment Mechanic  for over 35years  
Back to top
 
IP Logged
 
Mrclubike
God Member
*****
Offline



Posts: 869
Location: O'Fallon, MO USA
Joined: 09/28/14
Gender: Male
Re: Having a Flat With Tubeless Snow Flake
Reply #3 - 10/01/18 at 20:42:39
Post Tools
This is all they had but they got me home
I got some good 60 grit sand paper to buff out the tire because that little rasp that comes with the patches doesn't work very well
I also got some brake cleaner to help seat the tire but it wasn't needed
I only used it to check for leaks and clean up
  

patch_kit.PNG ( 289 KB | 5 Downloads )
patch_kit.PNG

Buzzing along on my tubeless 82 R65
Industrial mobile equipment Mechanic  for over 35years  
Back to top
 
IP Logged
 
Justin B.
YaBB Administrator
*****
Offline


I love my Beemers

Posts: 5798
Location: Crowley, TX
Joined: 11/08/05
Gender: Male
Re: Flat with Avon AM26's Tubeless on Snow Flake rims
Reply #4 - 10/01/18 at 23:58:58
Post Tools
That's the same plug kit I carry but I've never had to use it.  I carry a little Coleman compressor that I have had to use a couple of times.
  

Justin B.

2004 BMW R1150RT
1981 R100RT - Summer bike, NEKKID!!!
Back to top
WWW  
IP Logged
 
Tony Smith
God Member
*****
Online


Graduate, Wallace and
Gromit School of Engineering

Posts: 2031
Location: Cairns, Australia
Joined: 07/23/13
Gender: Male
Re: Flat with Avon AM26's Tubeless on Snow Flake rims
Reply #5 - 10/02/18 at 01:25:36
Post Tools
Sorry about your flat.

Full marks for self-sufficiency to get the wheel out and dismount it in the carpark, you don't see that much anymore.

I would have pulled the front wheel, used my tie downs to anchor the centrestand to the re-inserted front axle and then rocked th bike forward and taken the rear out downwards. I realize that time wise it's six of one and a half dozen of the other, but I reckon pulling the LHS pannier mount off is more fiddly.

You may have spotted a few weeks back when I announced I was going tubeless on the rear snowflake (the front K100 rim is already designed to be tubeless).

Well my grand plans unravelled when I could not get an airtight bead seal on the perfectly clean rim.

I blame the Shinko 712s which were an experimental purchase I now wish I had not made. They are gone as soon as I can lay my hands on a 100/90-18 front  and 110/90-18 rear from a brand of decent provenance. without a doubt the very worst tyres since the OEM Cheng Sings that came with (I think) the 400/4 I bought new in the 70s. (although that might have been the XS750). They are truly awful tyres.


  

1978 R100RS| 1984 R65 | 1984 XT350 | 1992 KLE500 | 2002 R1150GSA
Back to top
 
IP Logged
 
DonC
Junior Member
**
Offline


I Love YaBB 2!

Posts: 55
Location: Lafayette, NJ
Joined: 04/24/15
Gender: Male
Re: Flat with Avon AM26's Tubeless on Snow Flake rims
Reply #6 - 10/02/18 at 08:21:51
Post Tools
Tony, tell us what you really think! …  Roll Eyes
  
Back to top
 
IP Logged
 
wilcom
God Member
*****
Offline



Posts: 1224
Location: Menifee, Ca.
Joined: 07/26/08
Gender: Male
Re: Flat with Avon AM26's Tubeless on Snow Flake rims
Reply #7 - 10/02/18 at 09:45:27
Post Tools
DonC wrote on 10/02/18 at 08:21:51:
Tony, tell us what you really think! …  Roll Eyes


Yep, when Shinko starts looking for a "poster boy" they better not knock on Tony's door
  

Joe Wilkerson
Telephone man with a splash of Data
Menifee, CA

Present:
1984 BMW R65LS "Herr Head"
past:
1979  R65   
1980  R65          
1982 R80RT 
1974 R90/6     
1972  R75        
1964 R50
Back to top
 
IP Logged
 
Tony Smith
God Member
*****
Online


Graduate, Wallace and
Gromit School of Engineering

Posts: 2031
Location: Cairns, Australia
Joined: 07/23/13
Gender: Male
Re: Flat with Avon AM26's Tubeless on Snow Flake rims
Reply #8 - 10/02/18 at 14:53:37
Post Tools
wilcom wrote on 10/02/18 at 09:45:27:
DonC wrote on 10/02/18 at 08:21:51:
Tony, tell us what you really think! …  Roll Eyes


Yep, when Shinko starts looking for a "poster boy" they better not knock on Tony's door



I have ridden full on "knobby" off-road tyres that have more grip than those horrid 712s.  When I went for a ride last weekend I was a little tentative at first, new front end, new wheel, new tyres and all that, but after 150km I had confidence that my wrenching was sound and that nothing was going to fall off. There is a long sweeping corner on the Palmerston highway that tends to sort out the men from the boys, it is tight enough to require a decent lean angle and downhill and off camber into the bargain - I usually do not back off and take it at around 100~110kph, after all I know the road and know that the section following the corner is open and easy. As soon as I pitched in to the corner the Shinkos started lettign me know they were unhappy by doing a "slip/grip/slip routine  at a very slight lean angle. Tyre pressure might improve this a little, having no experience with them I simply set them mid-range 34/36psi, but like most tyres the "perfect" pressure will make only incremental improvements. I am going to give them to the local bike museum owner as that is about the only safe use I can think of for them.
  

1978 R100RS| 1984 R65 | 1984 XT350 | 1992 KLE500 | 2002 R1150GSA
Back to top
 
IP Logged
 
Mrclubike
God Member
*****
Offline



Posts: 869
Location: O'Fallon, MO USA
Joined: 09/28/14
Gender: Male
Re: Flat with Avon AM26's Tubeless on Snow Flake rims
Reply #9 - 10/02/18 at 20:33:48
Post Tools
Justin B. wrote on 10/01/18 at 23:58:58:
That's the same plug kit I carry but I've never had to use it.  I carry a little Coleman compressor that I have had to use a couple of times.


I am very confident the stop and go plugs would have plugged a normal nail or screw hole just fine
When i pulled out the piece of metal strap instead of the  normal nail or screw I thought I was in for a long afternoon but they sealed good enough to get us back to town to get some good patches

I was happily surprised  the Avon held up to the heat of running near flat

  

Buzzing along on my tubeless 82 R65
Industrial mobile equipment Mechanic  for over 35years  
Back to top
 
IP Logged
 
Mrclubike
God Member
*****
Offline



Posts: 869
Location: O'Fallon, MO USA
Joined: 09/28/14
Gender: Male
Re: Flat with Avon AM26's Tubeless on Snow Flake rims
Reply #10 - 10/06/18 at 21:48:44
Post Tools
Tony Smith wrote on 10/02/18 at 01:25:36:


I would have pulled the front wheel, used my tie downs to anchor the centrestand to the re-inserted front axle and then rocked th bike forward and taken the rear out downwards. I realize that time wise it's six of one and a half dozen of the other, but I reckon pulling the LHS pannier mount off is more fiddly.


When installing the new tire I tried it your way Tony
I think your way is easier and quicker and  hopefully I will not rip the mud flap again when I get a new one
  

IMG_4098.JPG ( 200 KB | 5 Downloads )
IMG_4098.JPG
IMG_4102.JPG ( 139 KB | 5 Downloads )
IMG_4102.JPG

Buzzing along on my tubeless 82 R65
Industrial mobile equipment Mechanic  for over 35years  
Back to top
 
IP Logged
 
Mrclubike
God Member
*****
Offline



Posts: 869
Location: O'Fallon, MO USA
Joined: 09/28/14
Gender: Male
Re: Flat with Avon AM26's Tubeless on Snow Flake rims
Reply #11 - 10/07/18 at 13:17:52
Post Tools
Just to show how  big the puncture was here are pictures of the damage
The tire is definitely done
  

IMG_4104.JPG ( 161 KB | 5 Downloads )
IMG_4104.JPG
IMG_4105.JPG ( 167 KB | 6 Downloads )
IMG_4105.JPG

Buzzing along on my tubeless 82 R65
Industrial mobile equipment Mechanic  for over 35years  
Back to top
 
IP Logged
 
Page Index Toggle Pages: 1
Send TopicPrint