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Rimming

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Rimming

Posted by mike_sullivan at June 04. 2017

Noticed my rear tyre was barely legal so just replacing with the one that was not capable of the return journey to Italy last year.

The knackered rim tape fell apart when the tyre was removed, so I now have a question...

Does the security bolt go under the rim tape (i.e. twixt steel rim & rim tape) or over (ie, twixt rim tape & tube)? 

Memo to self, Sunday is not a good day for maintenance no useful shops open! Time for a beer methinks.

Cheers,

Mike.

 

 

Re: Rimming

Posted by Andrew Heathwood at June 04. 2017

Mike

It's over, ie twixt rim tape and tube.

This is the clearest photo I could find - step 8 in the sequence:

http://www.motorcycle-usa.com/photo-gallery/dirt-bike-tire-change/

Andy

Re: Rimming

Posted by mike_sullivan at June 04. 2017

Excellent, thanks Andy!

Will source a rim tape tomorrow, or use electrical tape as a bodge to get to Suffolk.

Regards, Mike

Re: Rimming

Posted by david_evans at June 05. 2017

Your rim tape has only one hole in it normally so that is for the valve. The rim tape should go between tube and security bolt. You could spend 20 minutes cutting a rim tape from an old inner tube.Undecided

Re: Rimming

Posted by mike_sullivan at June 05. 2017

Aha, one for either side!

Wheel is in the shop having a new RoadRider fitted!

Cheers, Mike

Re: Rimming

Posted by Andrew Heathwood at June 06. 2017

Mike

Well I expect you'd expect me to say this but imho David is 'spuddling' as we say in Devon! If the rim tape only had one hole for the valve how would the security bolt be tightened? It needs a hole in the rim tape as well as one for the valve.

The purpose of a rim tape http://www.landrys.com/about/rim-tape-basics-pg197.htm is 'to protect the bicycle wheel's inner tube from spoke holes, which will puncture the tube if exposed inside the rim. Faulty rim tape will cause recurring flats, so it's something to look at when diagnosing the cause of flat tires.'

Ok that's for a bicycle but the same applies to a motorcycle.

This video shows how the rim lock (security bolt) works. It's purpose is to lock the tyre beading and therefore it is above the rim tape:  https://www.youtube.com/watch?v=Ocg9b2elIMM

My response is based on the real experience of changing tyres and fixing punctures many times on a Tri**ph. I don't think that a Norton is any different in this respect I just haven't had any punctures yet!

The Norton workshop manual (Part No. 065146) in Section H 'Refitting rear tyre' has the sequence 'ensure the rubber rim tape is fitted properly' (para 1) followed by 'insert the security bolt' (para 3).  I rest my case.

I will not comment further on this subject as my patience seems to wear thinner the older I get!

Andy

Re: Rimming

Posted by Hans E Taylor at June 06. 2017

Previously david_evans wrote:

Your rim tape has only one hole in it normally so that is for the valve. The rim tape should go between tube and security bolt. You could spend 20 minutes cutting a rim tape from an old inner tube.Undecided

I must say that I agree with you David, I have always put the rim tape over the top of the rimlock, it holds it in place when taking the tyre off.

Re: Rimming

Posted by david_evans at June 07. 2017

Some time ago I was looking at going tubeless on my IP2. They were fitted with tubes because the alloy wheels lacked the small ridge designed to retain the tyre on the bead in the event of a flat. A thread on a Honda Africa Twin site dealt with a guy who had sealed his rim spoke holes with silicon sealant and gone tubeless. Brave Man. the silicon sealant would however, get rid of the need for a rim tape and in fact you can see in one of the youtube videos listed above , that there are signs of sealant over the end of the spokes.

If your spokes are properly tight and the ends trimmed and smoothed off, rim tapes are probably not needed.............Pause 2-3 INCOMING!

Re: Rimming

Posted by Gordon Johnston at June 07. 2017

Another vote for David. I used to cut a second hole for the security bolt but discovered 2 things. Firstly that the 2nd hole weakened the rim tape and would sometimes find at subsequent tyre changes that it had broken there. Secondly it gives the tube more protection by lying between the inner tube and the security bolt. There is the small bonus of it holding the security bolt in place.

Re: Rimming

Posted by richard_cornish at June 07. 2017

Hi Mike,

   Don't know if you're aware the title of your thread may have an alternative meaning, similar to the Peter Kay "Car Share" dogging sketch.....just saying !

Re: Rimming

Posted by david_watkins at Sunday 03:53

Thank goodness for that! I thought you were talking of another sort of rimming.

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