I can not get tires to stay on my Weinmann rims

I recently purchased a bike that came with Weinmann 700C-17x622 and I can not get tires to stay on. I if bring the tube up to pressure it takes less then a kilometer before the tire pops off the rim, on both sides, and if I ride them with way less pressure, it just increases the time it takes before the tire pops off. I am not a whale, at around 80 kg, and I have taken the tires off and reseated them, the tubes I have are 700x20s. There is some vertical shift in the rim, but the places where the tire comes off varey, so I can't say for sure if that is the problem. On the front I have a Continental Gatorskin, and on the back a Schwalbe Blizard Sport (came on it, the front one blew out around the bead) and both seem to just fall off the rim.
Any suggestions would be much appreciated, as far as maybe new tires or rims or tips. Thanks

ps. These rims are quite shallow, just about 10 mm on cross section.

Are you using clincher tyres on tubular rims?

I'm sorry for the silly question, but it just seems like either your rims and tyres are mismatched by type clincher/tubular,
or by size - fitting a 28" tyre to a 27 inch rim maybe.

Some older rims don't have the hooks required to keep the beads of high pressure tires in place.

Which model rim? Photos?

Ed will help you out. Better book a week off work first though.

Ed will help you out. Better book a week off work first though.

:)

Do the rims look like this ^

Or with hooky bits, like this ^

hey sorry, dont know how to post pics so i just put them on photo bucket:

http://s655.photobucket.com/albums/uu275/lemondragonfly18/wheel/?action=view&current=P5040001.jpg

They dont have hooky bits, and i have no idea the model of the rim, i am guessing this means i am going to have to get new wheels.. very lame

It doesn't look like a clincher rim, so it would be a tubular rim. Tubular tyres need to be glued to the rim.
Someone else may tell you differently, and more correctly, but those rims are not for modern clincher tyres.

You're lucky that you weren't going down a steep hill and taking a sharp bend on those.

and THANK YOU for the help, i put a couple more pics up to see if that helps out, the hub is maid in France, Mallard, in '83?, and the wheel is made in Belgium, i still have no idea of the model, but the help is much appreciated, I have carried this bike more than I have ridden it.

It doesn't look like a clincher rim, so it would be a tubular rim. Tubular tyres need to be glued to the rim.
Someone else may tell you differently, and more correctly, but those rims are not for modern clincher tyres.

You're lucky that you weren't going down a steep hill and taking a sharp bend on those.

Thanks, and spectacular, new rims it is then... lame, unless its a lot easier than i think it is to glue the tire to the wheel...

Those are clincher rims, not tubular

Those are clincher rims, not tubular

So where's the hook for the bead then?

Clincher, no ? Someone has got to be all kinds of special to put rim tape on a tub rim

Tubular rim

lemon dragonfly (cool name actually), the 2 types of tyres being discussed at the moment are very different, in design and application. Whereas a clincher tyre is open, so that you can insert a tube (before inflating it), a tubluar tyre has no open section. Its round, closed. The tyre you could say has a built-in tube, and therefore, once glued carefully in place, its then inflated on the rim. The glue hold the tubular tyre to a tubular rim, but the hook/lips of the open part of the clincher tyre, hooks to the lips of the rim, and inflation secures it more firmly.

Clincher, no ? Someone has got to be all kinds of special to put rim tape on a tub rim

tell me about it, they came that way from Kingcutter, really nice guy, The frame and the bars are really nice,but i think he just likes to build bikes not ride em

Clincher, no ? Someone has got to be all kinds of special to put rim tape on a tub rim

They don't look like tubs but there's no hook (that I can see) for clinchers either.
Basically, this is why I only buy stuff made in the last 10 years :)

lemon dragonfly (cool name actually), the 2 types of tyres being discussed at the moment are very different, in design and application. Whereas a clincher tyre is open, so that you can insert a tube (before inflating it), a tubluar tyre has no open section. Its round, closed. The tyre you could say has a built-in tube, and therefore, once glued carefully in place, its then inflated on the rim. The glue hold the tubular tyre to a tubular rim, but the hook/lips of the open part of the clincher tyre, hooks to the lips of the rim, and inflation secures it more firmly.

Yeah, cool, i understand, I used to be a mechanic, and changing tires was not my most favorite part of the job, I understand the principal behind it, and yes i was lucky not to be going down hill, i was just in the middle of bank intersection about 4.5 k from home :)

I'm guessing that the rim is of a rather old design, and may have been for large diameter touring type tyres. But its a guess, that the tyre was taped into the rim.

It obviously wasn't held securely by the normal clincher-hook connection.

I'm going to say that older clinchers don't always have hooks.
you need a wider tyre than you are currently running.
much wider.

alright, so dose anyone know of someone building a vintage bike? and/or anyone looking to dump a set of 700s for cheap?

You need a steel beaded clincher tyre ( they don't flex so much as the folding kevlar beaded modern types apparently).

And they rims are only rated up to 100psi max.

Get a nice old pair of michellin dynamics from chain reaction for about £18 a pair.

I run this combo with no problems after having a gatorskin blow off whilst standing still (at about 120psi.)

Col.

funniest thread ever!

they're clinchers by the way....

So where's the hook for the bead then?

It doesn't look like a clincher rim, so it would be a tubular rim

haha LOL! who needs DFP :-)