Transport bike in the rain

[Sepia]

I will be transporting a dual suspension bike on the roof of my car for approx 9hrs. The forecast is for rain all the way.

Am I crazy to do this? Will my bike suffer any damage when travelling at 100 km/hr in a downpour?

Your thoughts and ideas will be appreciated?

Thanks guys.

[Johan Bornman]

Yes. It will do damage. Water will get into all the bearings. If you can, put it behind the car.

[TNT1]

.

 

It's a mtb. FFS! Over-think why don't you. It's like washing the bike. Geeeezus.

[Sepia]

Yes. It will do damage. Water will get into all the bearings. If you can, put it behind the car.

 

Many thanks Johan, just as I thought. Like a high pressure sprayer!

Appreciate your input and will hang it on the back.

Kind regards.

[SCHWINN LOVER]

Just a thought so please no flaming,maybe a bit of clingwrap around the bars,shifters,stem and the bb.At 100km/hour water may get in were you do not want it.Lube everything well when you get to the other side??

[TNT1]

Yes. It will do damage. Water will get into all the bearings. If you can, put it behind the car.

 

Discount my previous comment. The holy one of bike bits has spoken.

 

Never wash your bike again. Water will damage it. Never ride near a puddle or in the rain again. Same reason.

 

FFS! You guys make me tired.

 

Lets have a twelve page thread bashing me, and arguing again.

 

Put it behind your car? Then not only do you get water, but you get all the grit, oils and whatnot sprayed up by the car wheels. Your car wheels.

 

Explain that one, JB.

[TNT1]

 

Appreciate your input and will hang it on the back.

 

 

 

Put it behind your car? Then not only do you get water, but you get all the grit, oils and whatnot sprayed up by the car wheels. Your car wheels.

 

Explain that one, JB.

 

I wait with baited breath.

[Sepia]

It's a mtb. FFS! Over-think why don't you. It's like washing the bike. Geeeezus.

 

Do you use a pressure sprayer on your bike (let alone for 9hrs) I don't and never will.

My bike is clean enough already.

[Sepia]

Just a thought so please no flaming,maybe a bit of clingwrap around the bars,shifters,stem and the bb.At 100km/hour water may get in were you do not want it.Lube everything well when you get to the other side??

Yes and thanks, it works well. Do it with my road bike. Hate a wet saddle!

[Johan Bornman]

Discount my previous comment. The holy one of bike bits has spoken.

 

Never wash your bike again. Water will damage it. Never ride near a puddle or in the rain again. Same reason.

 

FFS! You guys make me tired.

 

Lets have a twelve page thread bashing me, and arguing again.

 

Put it behind your car? Then not only do you get water, but you get all the grit, oils and whatnot sprayed up by the car wheels. Your car wheels.

 

Explain that one, JB.

 

Cynicism doesn't equal common sense. You're living proof of that.

 

Think about it. You're driving through the water at 100kph or, you are standing still and aiming a 100kph jet of water at your bike. It is the same thing.

 

However, you seem to think that taking a shower is the same as getting sprayed by a fire hose. Tell you what, it is raining outside ride now. Get in your car, crank it up to 100kph and put your head out the window. Don't wear your Oakleys. Come report back to us cupcake.

[TNT1]

Do you use a pressure sprayer on your bike (let alone for 9hrs) I don't and never will.

My bike is clean enough already.

 

Yes, rain falling, and you at 100km/h is the same as your home pressure washer of around 1,500(ish) psi.

 

My breath is still baited, and the bait is getting stale.

[TNT1]

Think about it. You're driving through the water at 100kph or, you are standing still and aiming a 100kph jet of water at your bike. It is the same thing.

 

However, you seem to think that taking a shower is the same as getting sprayed by a fire hose. Tell you what, it is raining outside ride now. Get in your car, crank it up to 100kph and put your head out the window. Don't wear your Oakleys. Come report back to us cupcake.

 

100kph jet of water?

 

really?

 

The best you got?

 

Don't own oakleys. Sorry.

 

And no, I polished my car this morning, I'm not taking it out in the rain to satisfy your pseudo-science.

[Johan Bornman]

Just a thought so please no flaming,maybe a bit of clingwrap around the bars,shifters,stem and the bb.At 100km/hour water may get in were you do not want it.Lube everything well when you get to the other side??

You make sense.

 

If you could wrap something around the bearings, such as the headset, hubs and suspension members, it will slow down the water and prevent it from slipping in underneath the contact seals.

 

Contact seals of the type on catridge bearings (which are plentyful in headsets, BBs, hubs and suspension pivots) are easily overpowered by pressure - be it air or water being aimed at it. They are really just designed to be splash proof. If you can protect them, they'll survive.

 

It is no use attempting to lube everything afterwards, you're just mixing grease and water then, which will emulsify and will destroy the bearings. The trick would be to get the water out, which is impossible. Those seals will keep it inside, very effectively.

 

By putting the bike behidn the car you're putting it out of the direct air/water stream where the water is misted onto the bike rather than sprayed directly at it. However, a wheel that peeps out is still vulnerable.

[TNT1]

Come on, Johan.

 

You can't be all, don't buy those new wheels, put the money in your bond, the one minute, and don't drive in the rain with your bike the next.

 

You gotta pick a side.

 

Yeah, your bike gets damaged and it's incremental. Just like being alive. So your answer is to just not?

 

I don't get it. It's inconsistent, maybe that's why I have a hard time believing your spiel.

[Tumbleweed]

I wait with baited breath.

 

Bated is more correct, but the "science" that follows is fishy so you're excused.

 

Tell you what, it is raining outside ride now. Get in your car, crank it up to 100kph and put your head out the window. Don't wear your Oakleys.

 

Tell a person to speed in the rain. Wow, That's responsible.

 

Come report back to us cupcake.

 

Cupcake? Cute. I call him muffin.

 

But, yeah, when, your back's against a wall, get personal. Typical.

 

Cynicism doesn't equal common sense. You're living proof of that.

 

Think about it. You're driving through the water at 100kph or, you are standing still and aiming a 100kph jet of water at your bike. It is the same thing.

 

 

I just spoke to my mate, Vinodh, who designs wings for Airbus, and he snickered at this. He reckons your grip of hydro dynamics is totally flawed - rookie mistake perhaps? - because there are four variables to be considered: temperature, pressure, velocity, density. Please elaborate on how you came to the above assertion in terms of this. You are not driving through water. You are driving through air with falling water. Very different from a concentrated source of water being directed from a hose. Driving through rain, he ventured, would render the viscosity of water irrelevant considering there is a barrier or lubrication. He mentioned a concept I had never heard of before - vorticity - which the turbulence generated by the bike on top of the car would cause and which would limit the compressability of water molecules and negate the chance of it working its way through the seals.

 

This is a layman's understanding of an engineering topic, as is yours. Maybe the real engineers on the hub can set us right.

[awesme]

eish and this so early n a Friday,

 

there are def enough people here that needs to get out and get some riding.

 

The guy asked a simply question, he is concerned over his bike, don't belittle him or his question, give your view, politely and step back, and damm guys, stop the personally attacks/comments.

 

G