Gags said:I am in the market for a couple of tubular tyres to put on my spare set of
track wheels........my intention being to use them as a training set,
probably on both outdoor and indoor velodromes. When I got them they did
have a set of tyres on them but they are pretty old and the rubber has gone
hard and brittle and so tonight I ripped them off (consequently I now have
sore thumbs).
I am sure I can find out on the web but can someone in the know (GemmaK,
Bleve, etc) tell me, do I have to remove all of the glue residue from the
old tyres before putting new ones on and, if so, what should I use to get it
off??
I can remember GemmaK telling me that the actual gluing on takes a while as
you have to put the tyres onto the rim first to pre stretch them, prior to
actually gluing them on. My thumbs are pretty strong so hopefully I will be
able to manage OK. I noticed tonight that the tyres had a cloth rim tape
glued to them.......is this a part of the tyre or does it have to be glued
on to the rim prior to the tyre being glued on?
Also, anyone got any recommendations for what tyres and glue to buy and
where to get them at a good price. GemmaK did provide this info to me at
one stage but it is on my old computer that died and so I no longer have the
emails or the link.
Gags
hmmm...this is a personal thing, but its your neck and you need to have confidence in your gear and how its put together...
Can only speak for what I use and what goes into the gear I see.
My training tyres are Vittoria Competiton Atlanta's...got them second hand $100 a pair, new, unused... I ride them around Carnegie and sometimes on the road, also have some old Clements I use on the trackie in Fixie mode on the road...
On the Boards, Have a Mix of Vittoria Pista EvoCS and Challenge Pista Handmades...all glued with Vittoria "Mastik"
You could use repaired singles too, Walkers sell them sometimes for around $20 each... I wouldnt use them or any repaired single for that matter, but it's your call and if they suit your plans ...
As for removing and gluing...it is an art...some die hards use Shellac and it was once the case that "only" Shellac could be used on some tracks back when glues werent so good. ( There are a few who still swear by Shellac...you just have to find them, then find them in a good mood and with lots of time)... if you can't...then use a good glue.
I use Vittoria "Mastik" Professional, not cheap, works out close to $4-$5 a tube and that does one tyre... get it at your LBS.
The tape (note: its part of the tyre, not a rim tape) ...well the tape on the tyre is necessary, ...( well not always, but gives a level of comfort if your rims has spoke holes which are sharpish), but on re-glues it can cause the tyre to be a bit lumpy and might be removed to get a smoother roll if glue has built up..(I've done this on one of mine and its ok (6 months so far)
cleaning dirt and glue off the rims isnt that easy, especially if you come acrosss lousy glue or as some Tubs Ive seen (have been glued on with) " BondCrete "...sheesh...
Removing dirt and glue from the rims needs some care, use an emery board for final finishing to get the rim smooth and not damaged...some wheel mechanics use petrol to clean the rims of glue...but dont use a file !!.
When gluing you must not get glue into the spoke eyelets, ...pre-stretch the tyre on the rim, start at the top of the rim and stretch down both sides evenly as you work towards the bottom, then flip and pop...its on...needs strong thumbs...inflate to about 7 atm 105psi and leave overnight at least...then remove the tyre and apply even thin coat of glue to the rim and let dry (24hrs)(dont put tyre on yet) . Then apply a thinner coat of glue to the rim and a light brushing of glue down the centre of the tubular tape, dont get any on the cotton or silk side walls , if you do wipe off with a cloth...nothing metal...let dry for one hour, dont let get too hard...then stretch tubular over the rim (as above), inflate a little to centre it...make sure the valve is perfectly straight in the rim and take care to cement the valve area before you inflate, then inflate to 7 atm (105psi) and leave 24 hours to dry before riding...inflate to rec pressure for tyre and away you go...
Others may have a variation on this... if in doubt ...find an LBS that does track work and seek their advice. (Hampton Cycles, Ivanhoe, Kennedy etc)...
most critical thing is to ensure even glue, lumps can cause uneven glue thickness and the tube may "move" on the rim and "blow"...not pretty.
good luck and grit your teeth and go for it!!