Author Topic: Presta Valves VS Schrader valves.. bicycle stuff (Read 3452 times)

754 · « **on:** July 23, 2012, 10:34:42 AM »

I got a MB with PRESTAs, am running street only and prefer Schraders..
What are the pros and cons..mainly i dont like it being harder to put air in them..

Duke McDukiedook · « **Reply #1 on:** July 23, 2012, 10:51:00 AM »

Prestas were designed to allow a thinner width tire and tube to be used on road bikes, preferrably 700c series tires.
I have no idea why they would want to put them on MTB tires except to frustrate owners.

You can buy screw in adapters to inflate your prestas with normal schrader valve devices, it is a pain though.

y2kc0wb0y · « **Reply #2 on:** July 23, 2012, 10:58:27 AM »

FYI: Most floor pumps have the adapters that will take both types built in. "Presta" has a metal valve all the way to the tube so the valve will endure more side to side stress at the rim entry point. Schrader valves are just rubber from the tire down.

754 · « **Reply #3 on:** July 24, 2012, 08:44:43 AM »

Its a Gary Fisher Joshua 3, I put road tires on.. as in cruiser, not skinny ones. It has prestas, I prefer the other for easier inflating.. not sure if I have to drill the rims/ The rims are Mavericks, rear is marked A SYM.

Cheffish · « **Reply #4 on:** July 24, 2012, 08:56:40 AM »

Prestas do suck. I used the adapters for a while with no problems. They're cheap and easy to use. That way you can air up at gas stations and stuff. Mavics are good wheels. I suppose drilling them would be pretty safe if you wanna go that route

luap · « **Reply #5 on:** July 24, 2012, 09:47:29 PM »

Im pretty sure you can drill out the wheel to allow schrader valve also
paul

RAFster122s · « **Reply #6 on:** July 24, 2012, 11:32:54 PM »

If you drill the rim for schrader valves it will cause issues going back to presta.
Since you are running on the street if you didnt know already, slicks will require less pedalling effort than most treaded tires. I had a hybrid (trek) that I put treaded tires on and the switch to slicks was amazing and the bike moved so much better...was commuting in Tucson...

Vreihenmotor6 · « **Reply #7 on:** July 25, 2012, 04:20:29 AM »

mainly issues arise when trying to run schrader on a super narrow (road) rim, since you have a mountain bike you're all set

just drill out your rim, 11/32 size bit I belive

Duke McDukiedook · « **Reply #8 on:** July 25, 2012, 06:26:57 AM »

Quote from: Vreihenmotor6 on July 25, 2012, 04:20:29 AM

mainly issues arise when trying to run schrader on a super narrow (road) rim, since you have a mountain bike you're all set

just drill out your rim, 11/32 size bit I belive

The other issue is if you want to go back to a presta after you drill you would have to put some kind of a bushing or spacer to account for tha gap made by drilling. I say just use the screw on adapters.

754 · « **Reply #9 on:** July 28, 2012, 08:47:27 AM »

This may sound really dumb, but I am not used to bikes with gear clusters..where should I position chain, before rear wheel removal?.. smallest sprocket ?

Cheffish · « **Reply #10 on:** July 28, 2012, 10:49:46 AM »

Yup. Then push the derailleur for some slack. And pull the wheel out

veloracermike · « **Reply #11 on:** July 28, 2012, 11:13:24 AM »

Most high end MBs that don't run tubeless tires have presta valves. It's not as described above for thinner tired road bikes. Prestas are ligte Most co2 inflaters are designed for presta valves as well.

Mtmooradian · « **Reply #12 on:** July 28, 2012, 11:42:42 AM »

Main reason is strength.... Smaller hole makes for stronger rim.

veloracermike · « **Reply #13 on:** July 28, 2012, 12:04:01 PM »

Most high end MBs that don't run tubeless tires have presta valves. It's not as described above for thinner tired road bikes. Prestas are ligter Most co2 inflaters are designed for presta valves as well.

faux fiddy · « **Reply #14 on:** July 28, 2012, 12:38:19 PM »

When I rode skinny tire bikes I thought Presta was the coolest thing, and they did make a frame pump that could get you back to town if you flatted.

Now I like shrader, finding air is more convienient without keeping track of adapters or carrying a pump.

754 · « **Reply #15 on:** August 01, 2012, 08:26:20 AM »

I dont undersrtand, this on my gary Fisher Joshua 3;
The riont wheel appears to be straight laced, the rear is cross 3. Is not the straight lace wheel the WEAKest design, espescially for off-road?

Duke McDukiedook · « **Reply #16 on:** August 01, 2012, 09:08:25 AM »

Probably, but the front tire on a bicycle does not support as much weight and force as the rear does.

veloracermike · « **Reply #17 on:** August 01, 2012, 09:16:49 AM »

Quote from: 754 on August 01, 2012, 08:26:20 AM

I dont undersrtand, this on my gary Fisher Joshua 3;
The riont wheel appears to be straight laced, the rear is cross 3. Is not the straight lace wheel the WEAKest design, espescially for off-road?

Couple of reasons, straight laced are lighter and more aero, and like was just mentioned the front doesn't support as much weight. A proper straight laced wheel with the right tension is very tough though.

Mtmooradian · « **Reply #18 on:** August 01, 2012, 11:27:33 AM »

On a mt bike a standard 3cross front is the best, with the right double butted spokes you can get the weight down... Straight laced is fine for road, mtb its pushing it. But it also depends on the type of riding. My race wheels are about 1350grams ....

Vreihenmotor6 · « **Reply #19 on:** August 20, 2012, 01:56:49 PM »

Quote from: 754 on August 01, 2012, 08:26:20 AM

I dont undersrtand, this on my gary Fisher Joshua 3;
The riont wheel appears to be straight laced, the rear is cross 3. Is not the straight lace wheel the WEAKest design, espescially for off-road?

there were a few companies that liked to build wheels like this for mountain bikes around the 2000s, if it was a shimano hub, being laced like that voided the warranty, but the trek family of brands had a supplemental warranty that would supersede the shimano one, I always found that funny. now that disc brakes are the brake of choice for mountain bikes, the radial front wheels have gone mostly away

Mtmooradian · « **Reply #20 on:** August 20, 2012, 08:08:13 PM »

Specialized did it with a bunch of there wheels

faux fiddy · « **Reply #21 on:** August 20, 2012, 09:44:14 PM »

Quote from: 754 on August 01, 2012, 08:26:20 AM

;
The riont wheel appears to be straight laced, the rear is cross 3. Is not the straight lace wheel the WEAKest design, espescially for off-road?

Yeah, but if someone thinks it's cool it doesn't matter.

I have to go check mine sometime. I think my high flange hubs were all three cross and low flange were four.

chung · « **Reply #22 on:** October 01, 2012, 01:26:58 AM »

My Bridgestone MB5 has them as do all my Raleighs. I never give it much thought as to it "being a pain" to inflate them.... until you loose all your adapters ;-( They do look cool, they are smaller and people say "what the hell is that?" Can't say if they leak more or less but I have had rims drilled for Schrader valves and I found rubber bushes somewhere to semi-restore them back to the way they came. They don't stay put too well though.

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Author Topic: Presta Valves VS Schrader valves.. bicycle stuff (Read 3452 times)