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Pothole partial tyre deflation.
Posted: Jul 17th, '21, 10:33
by Jug
Just had my first I think.
Hit a pothole towards the end of a ride and the bike felt weird afterwards but I just thought it was me.
Rolled my bike out 2 days later and it was really difficult to turn the bars. Checked the tyre and it had dropped 20psi.
Pumped it back up and it's been fine since..
So watch out for that happening..
Re: Pothole partial tyre deflation.
Posted: Jul 17th, '21, 12:30
by Robbo87
Yep, heard this tale before from elsewhere. If the impact was severe enough to partially deflate a tyre, best check the wheel is still straight and true.
Re: Pothole partial tyre deflation.
Posted: Jul 17th, '21, 15:48
by Jug
Will be doing that soon, ABBA stand with front lift to the rescue!
Re: Pothole partial tyre deflation.
Posted: Jul 18th, '21, 08:46
by Jug
Checked the run out by spinning the wheel with a pointer rested against each fork leg. Then gave the wheel a good clean and inspected it for cracks with a bright torch.
All good thankfully.
Good strong wheels on these bikes, Marchesini, very light too.
Re: Pothole partial tyre deflation.
Posted: Jul 18th, '21, 09:49
by ptolemyx
Did you check both axial (side to side) and radial (up and down/out of round) runouts?
Re: Pothole partial tyre deflation.
Posted: Jul 18th, '21, 10:57
by Jug
ptolemyx wrote: ↑Jul 18th, '21, 09:49
Did you check both axial (side to side) and radial (up and down/out of round) runouts?
I did, but just by eye.
I put a pointer near the edge and watched for any distance change, so was looking to see if the rim edge got closer/further away but also if it moved up/down wrt to the pointer. There was no discernible movement.
Re: Pothole partial tyre deflation.
Posted: Jul 18th, '21, 11:03
by Mervin
the old fairy liquid and water trick in a spray bottle is useful when looking for potential air leaks
Re: Pothole partial tyre deflation.
Posted: Jul 18th, '21, 11:32
by Jug
Mervin wrote: ↑Jul 18th, '21, 11:03
the old fairy liquid and water trick in a spray bottle is useful when looking for potential air leaks
That was going to be my next test if it failed to hold pressure afterwards.
Thankfully it's been holding pressure just fine since so it appears I got away with that one.
Re: Pothole partial tyre deflation.
Posted: Jul 18th, '21, 19:55
by Robbo87
Which of the Jugmobiles was on it's annual airing?
Re: Pothole partial tyre deflation.
Posted: Jul 18th, '21, 20:15
by Jug
My beautiful Superduke 990, which has now been out three times this year already... I'll have you know!
But with the current state of the roads I might well put it away again.
