Sealing tubeless rims

Got a technical question? Ask it in here.

Moderator: Moderators

Ron
Junior participant
Junior participant
Posts: 2
Joined: Fri Jun 18, 2010 9:21 am
Bike: Sherco
Club: Tasmania Trials Club

Sealing tubeless rims

Postby Ron » Fri Jun 18, 2010 3:52 pm

Could anyone advise what one can do to seal the nipples on a rear rim with a tubeless tyre. I have fitted a new rim band but am still experiencing air loss through the nipples, don't even get through a lap while at an event before the tyre is flat. Ron



AndrewT
C grade participant
C grade participant
Posts: 40
Joined: Thu Oct 30, 2003 10:32 pm
Bike: Beta

Re: Sealing tubeless rims

Postby AndrewT » Fri Jun 18, 2010 5:05 pm

1) Thoroughly clean rim & degrease using a good quality contact cleaner.
2) Use a good quality silastic (Sikaflex) & seal entire rim.
3) Leave for good 24 hours before use.

Refer to the SSDT prep on BetaUK website. www.betauk.co.uk

Good Luck



User avatar
TRIALTECH
Dealer
Dealer
Posts: 99
Joined: Thu Jun 04, 2009 6:56 am
Bike: Beta Scorpa Sherco
Location: Brisbane

Re: Sealing tubeless rims

Postby TRIALTECH » Sun Jun 20, 2010 7:07 am

Ron

Really no need for sealants at all. The right assembly lubricant, technique, attention to detail & patience is all thats required.

Check out my article on this topic

http://www.trialtech.com.au/sitebuilder ... cement.pdf

Call me if you need any help

Trialtech


TRIALTECHMOTO

Qld Scorpa / Sherco / Beta Dealer
New and Used bikes
Workshop (Qualified Mechanic 30yrs experience)
Spares and Accessories
Facebook Messenger 'trialtechmoto'
sales@trialtech.com.au
http://www.ttmoto.com.au
0491.075.653

User avatar
The Hell Team
Dealer
Dealer
Posts: 338
Joined: Sat Oct 25, 2003 11:31 am
Location: Between Hell and High Water.....

Re: Sealing tubeless rims

Postby The Hell Team » Tue Jun 22, 2010 6:37 am

I would totally support Trialtech's opinion on this. Using Sikaflex will only make huge problems further down the track. If you need to change a broken spoke you will have created yourself all sorts of issues.
It may seem like a simple solution now but you will regret it later.
With the new style rim bands - with the valve stem integrated into the band, there should be no problems if a few simple steps are followed.
Clean the rim sealing channels thoroughly. This is very important,
Use a lubricant on the band when fitting (red rubber grease works well)
Be patient and LOOK, it's just needs to be sitting in the channel flat all round.
All the best


We can crate and freight bikes Australia wide for very reasonable rates. Ring or email with your location for freight quote.
The Hell Team Trials Store
02.8424.6400
0418.415.129
whoever@thehellteam.com
http://www.thehellteam.com

AndrewT
C grade participant
C grade participant
Posts: 40
Joined: Thu Oct 30, 2003 10:32 pm
Bike: Beta

Re: Sealing tubeless rims

Postby AndrewT » Tue Jun 22, 2010 2:49 pm

Should have asked Ron - what type of bike / rim do you have - modern type eg Morad or an older Akront ? - Is rim is good condition ? / any internal corrosion etc etc ?

Here is the link for SSDT prep - read down to rear wheel seal - it's easy to do if you're still having problems - & easy to still remove seal & change spokes in need - just a line of sikaflex on the edge of the rim band & smear onto the rim to make the seal.

http://www.trialscentral.co.uk/cms/file ... 0Guide.pdf



User avatar
Neo
Expert participant
Expert participant
Posts: 444
Joined: Fri Dec 31, 2004 1:27 pm
Bike: 06 Sherco 250
Club: TCC
Location: Central Coast, NSW

Re: Sealing tubeless rims

Postby Neo » Tue Jun 22, 2010 9:09 pm

Any kind of sealer is hard to remove later. And chances are you'll scratch the ally in the channel while removing it (in your frustration).

For problem rims (with corrosion or scratches) I smear marine grease inside the channel and on the back of the nipples. It helps to seal the band, makes the band easier to slide into position (and even out the band tension) and also stops any corrosion on the rim or the back of the nipples. It also cleans off with and bit of petrol too but make sure it's only under that rim band. And wipe it off of any other part of the rim.

Having said all this the rim band that Paul mentioned (with the valve stem integrated into the band) has gotta be the way to go too :thumb:

Best of balance.
Neo


"Nothing more and nothing less than the vision of success"..... Ryan Leech
"TRIALS....It's not life or death....It's much more serious than that!!".....

Ron
Junior participant
Junior participant
Posts: 2
Joined: Fri Jun 18, 2010 9:21 am
Bike: Sherco
Club: Tasmania Trials Club

Re: Sealing tubeless rims

Postby Ron » Wed Jun 23, 2010 9:13 am

To all who have responded to my query, many thanks for the assistance.
Ron




Return to “Technical help”

Who is online

Users browsing this forum: No registered users and 1 guest