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Originally Posted by Wildwood
(Post 22180267)
Almost done with the last can of mastik - I will soon be a tubular tape guy. :thumb:
I personally enjoy the whole process of gluing and can do it quick anyway. |
Originally Posted by WGB
(Post 22172868)
Help me as I am not having fun riding clinchers!!!
I have been riding with tubulars and being a big lad, I kept having to get them trued Any bump and spokes would loosen and back they'd go. Ye local wheel builder said my rims (Nisi) were too light and that I needed a more rigid wheel. To that end I have acquired a 40 hole rear hub and a 36 hole front hub for the next build. I'm trying to find a strong 40 hole tubular rim. I've even looked for tandem rims but no luck. (I did buy a 40 hole rim only to have a 48 shipped to me and that 48 was a very light weight track rim). I'd like to use tubulars for small scale touring as well Anybody have any specific rim they'd recommend? And a source for such a rim??? |
Originally Posted by L134
(Post 22189782)
So, it seems Velocity Major Tom's are a viable option. I just got a call yesterday that my special order for two 40 hole rims is ready to ship.
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I have a question that I'm sure some here could answer. I have a set of tubulars that I plan to mount with Jantex Competition 76 tape. Many years ago I rode tubulars for a while that I mounted with glue. I had a spare that was pre-glued. Now, if I flat with tape, and I take off my tire, and the tape stays on the tire, can I reasonably safely ride home on a un-glued & un-taped spare if I take it easy? No fast downhills or fast cornering on the way home. I'm thinking that I'd rather not try to do a tape job on the side of the road and I'd like to take off the spare and replace it with either the repaired flat or a new tire when I get home. Am I crazy? Lets assume I don't have sealant with me or it doesn't seal the puncture. Thanks for any advice.
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Originally Posted by Classtime
(Post 22190714)
be aware that the Major Toms are wide and are inappropriate for 25mm or less tires. I built some for CX and thought I might use them also for road rides with 25s and the radius of the MT was too large for a good gluing.
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Originally Posted by Hobbiano
(Post 22190944)
I have a question that I'm sure some here could answer. I have a set of tubulars that I plan to mount with Jantex Competition 76 tape. Many years ago I rode tubulars for a while that I mounted with glue. I had a spare that was pre-glued. Now, if I flat with tape, and I take off my tire, and the tape stays on the tire, can I reasonably safely ride home on a un-glued & un-taped spare if I take it easy? No fast downhills or fast cornering on the way home. I'm thinking that I'd rather not try to do a tape job on the side of the road and I'd like to take off the spare and replace it with either the repaired flat or a new tire when I get home. Am I crazy? Lets assume I don't have sealant with me or it doesn't seal the puncture. Thanks for any advice.
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Originally Posted by Hobbiano
(Post 22190944)
Now, if I flat with tape, and I take off my tire, and the tape stays on the tire, can I reasonably safely ride home on a un-glued & un-taped spare if I take it easy?
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Originally Posted by DiabloScott
(Post 22191248)
If you take it REAL easy, and you pump the tire up to a high PSI... you could ride home safely on a naked rim and an unglued tire.
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Originally Posted by Hobbiano
(Post 22191664)
Is there any advantage to applying beforehand a coat of glue to the spare, when there's no glue on the rim?
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Originally Posted by CV-6
(Post 22191914)
If you are swapping a spare in, then you will have glue on the rim.
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Originally Posted by Hobbiano
(Post 22191664)
Is there any advantage to applying beforehand a coat of glue to the spare, when there's no glue on the rim?
My spare is always used, so it has some glue on it - I'm pretty sure there's no disadvantage to putting a pre-glued tire on a pre-taped rim. The other thing you have to be careful with, when riding a less-than perfectly glued/taped tire, is braking... the tire can creep around the rim and then the valve will get crooked and then there can be problems. Rolling sew-ups off the rim is the kind of horror everybody's heard about; I have literally NEVER seen it... except for the famous Beloki crash in the TdF... and that was HOT, at race speed, and a steep winding downhill. A lot of the stories (especially criteriums) are crashes for OTHER reasons and then the tire comes off IN the crash rather than CAUSING the crash. So yeah be careful, but quit worrying. https://cimg0.ibsrv.net/gimg/bikefor...a74f72b905.jpg |
I've seen it happen once. This was around 1985. I was riding in a small group and we were nearing the end of a ride where we would often crank it up if we had any gas left. We were going pretty fast but not really sprinting, maybe 28 or 30 mph. We were drafting each other when the guy in front's front tire came off the rim! We were on a straight stretch of road and he managed to keep it upright as he rolled to a stop on the rim. The tire was still inflated and it just stayed right between the rim and the fork crown and off to the side of the rim at the bottom. I remember that the glue was not tacky at all. No telling how long he rode it like that before it finally came off. The glue must have just completely dried up or not been adequately glued to begin with. That's kind of stuck with me all these years.
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https://cimg2.ibsrv.net/gimg/bikefor...6118a2dc9c.jpg
Checking your glue condition is a standard PM. Once a year is probably fine - twice a year if you're a worrier. Do it without air in the tire so you can really peel up the edges and look for the boogers. |
Question about Velox Jantex Competition 76 Tape
Has Velox Jantex Competition 76 tubular gluing tape been changed/upgraded in recent years?
On vendor sites, I often see Velox Jantex Competition 76 tape referred to as "Belgian tape" that "Must be used in conjunction with tubular glue". These sites usually have a picture of a yellow-tan roll of tape. However, the Velox.fr website shows it as looking more like Effetto Mariposa Carogna tape, but with a pink color, and says nothing about it being Belgian tape. Nashbar.com mentions "New formula for 2015" but contradicts itself about the need to use glue with it. I know about Belgian tape, used for 'cross tubulars (https://cyclocrossworld.com/how-to-g...-belgium-tape/), but Velox Jantex Competition 76 ain't Belgian tape. I'm just curious about all the confusion in the product descriptions, and wonder if I should try to order some from a website that shows the newer pink stuff. Maybe the distributor (QBP?) is giving all the vendors inaccurate product information. Any advice is appreciated. |
Originally Posted by tcpasley
(Post 22197870)
Has Velox Jantex Competition 76 tubular gluing tape been changed/upgraded in recent years?
On vendor sites, I often see Velox Jantex Competition 76 tape referred to as "Belgian tape" that "Must be used in conjunction with tubular glue". These sites usually have a picture of a yellow-tan roll of tape. However, the Velox.fr website shows it as looking more like Effetto Mariposa Carogna tape, but with a pink color, and says nothing about it being Belgian tape. Nashbar.com mentions "New formula for 2015" but contradicts itself about the need to use glue with it. I know about Belgian tape, used for 'cross tubulars (https://cyclocrossworld.com/how-to-g...-belgium-tape/), but Velox Jantex Competition 76 ain't Belgian tape. I'm just curious about all the confusion in the product descriptions, and wonder if I should try to order some from a website that shows the newer pink stuff. Maybe the distributor (QBP?) is giving all the vendors inaccurate product information. Any advice is appreciated. https://cimg0.ibsrv.net/gimg/bikefor...0ef0403efb.jpg https://cimg1.ibsrv.net/gimg/bikefor...7f571a0d1c.jpg |
I used the Velox tape and it didn’t say anything about using glue. I didn’t use glue and so far all seems well.
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Originally Posted by Classtime
(Post 22190714)
be aware that the Major Toms are wide and are inappropriate for 25mm or less tires. I built some for CX and thought I might use them also for road rides with 25s and the radius of the MT was too large for a good gluing.
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Originally Posted by masi61
(Post 22213683)
Can you share which tires you were proposing to use with the Major Tom’s for road? What is their width?
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Classtime - sorry the Sprinter Gatorskins did not work out and sorry your frame cannot accept 28’s.
Any chance that a bonded (not a “sew-up”) tubular like a TUFO or a Conti GP4000 tubular with more of a flat base tape might work better in the 25 mm width? |
Somebody else is racing CX on those Major Toms. My go to road tire is a regular 22mm Sprinter. And the 25mm Gatorskin is for Eroica, The BWR, and one day, Cino. (Those 22mm Sprinters on 7900/Nemesis felt pretty awesome today.)
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Originally Posted by Classtime
(Post 22213861)
Somebody else is racing CX on those Major Toms. My go to road tire is a regular 22mm Sprinter. And the 25mm Gatorskin is for Eroica, The BWR, and one day, Cino. (Those 22mm Sprinters on 7900/Nemesis felt pretty awesome today.)
I have Major Tom’s (polished) built up with Chris King road hubs into a custom road wheelset. I have not ridden them yet but hope they work for me for road. |
Need to get new tubs like my Strada
Lohttps://cimg2.ibsrv.net/gimg/bikefor...f89d6697c3.jpg
Love the way these ride... gifted to me by a friend. But it seems the new Strada has a synthetic sidewall, spun poly or something. These look like Egyptian cotton judging from the outrageous psi rating but I don't know. As a recreational rider 150 lbs they run great at 90/100psi. I vaguely remember how a great tubular like the clement seta rides from the 70s so I'll be disappointed if the new ones don't have a good feel and sound. And I'll be damned if they don't have a tan sidewall! Should I go for it? |
I just put a pair of Servizio Corse tubular tire onto the rims. Unfortunately the rear tire isn't sitting quite right at the valve stem and thus there's a bit of a bump every revolution. What's t he easiest way to get the tire to sit on t he rim perfectly round. I haven't applied the tape yet because 1. I was wanting to stretch the tire prior to doing that and 2. I wanted to be sure the tire was perfectly round on the rim.
Thanks and cheers |
Originally Posted by Miele Man
(Post 22225656)
I just put a pair of Servizio Corse tubular tire onto the rims. Unfortunately the rear tire isn't sitting quite right at the valve stem and thus there's a bit of a bump every revolution. What's t he easiest way to get the tire to sit on t he rim perfectly round. I haven't applied the tape yet because 1. I was wanting to stretch the tire prior to doing that and 2. I wanted to be sure the tire was perfectly round on the rim.
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I've never mounted Servizio Corse tires but Is is very important that you mount the tire with a great deal of stretching force from the beginning -- at the valve -- or you end up with more tire at the valve. And if the base tape is doubled at the valve? Well?
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Originally Posted by Miele Man
(Post 22225656)
I just put a pair of Servizio Corse tubular tire onto the rims. Unfortunately the rear tire isn't sitting quite right at the valve stem and thus there's a bit of a bump every revolution. What's t he easiest way to get the tire to sit on t he rim perfectly round. I haven't applied the tape yet because 1. I was wanting to stretch the tire prior to doing that and 2. I wanted to be sure the tire was perfectly round on the rim.
Originally Posted by Classtime
(Post 22226031)
I've never mounted Servizio Corse tires but Is is very important that you mount the tire with a great deal of stretching force from the beginning -- at the valve -- or you end up with more tire at the valve.
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Originally Posted by Miele Man
(Post 22225656)
I just put a pair of Servizio Corse tubular tire onto the rims. Unfortunately the rear tire isn't sitting quite right at the valve stem and thus there's a bit of a bump every revolution. What's t he easiest way to get the tire to sit on t he rim perfectly round. I haven't applied the tape yet because 1. I was wanting to stretch the tire prior to doing that and 2. I wanted to be sure the tire was perfectly round on the rim.
Thanks and cheers Tubular Tire Mounting Cement Gluing Adhesion by Yellow Jersey; Thoughts on a Front Wheel |
I only pre-stretch my tires if they're super tight and then I only stretch them overnight. I've never had problems with lumps if they aren't stretched.
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Yesterday I manage to g et rid of the hop near the valve stem. Unfortunately te tire now has a hop in a different location. I didn't feel like messing with it today.
Funny thing is that the front tubular tire went on the wheel with no hop at all. I shall persevere and get this rear wheel t ire hop out... eventually. I'll let you all know when that happens. Cheers |
I've mounted tubs so many times now that I'm good at getting the tension even all the way around the first time. If I do an up getting a lumpy spot I'll just pull over to the side of the road, remove wheel, deflate and readjust the tension to stretch out the lump then air it back up and continue the ride. Not a big deal.
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