Carerra TDF - Frame Tubes Full of Water

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IanT

http://www.sprocketwaffle.co.uk
I am the proud owner of a Carerra TDF LTD Edition. It's my first road bike and I really do enjoy it.

My regular 'big' (ish) ride of the week is Saturday morning when, with a mate, I cover 30 - 40 miles. Today was no exception, however, it was the first time that I have ridden the bike in the rain.

Despite not having any shoe covers yet - and getting soaked to the skin, I really, really enjoyed the ride - as I always do.

Naturally, 35 miles on wet country roads had left the bright yellow paintjob on the TDF looking a little grubby, so this afternoon, I diligently set to it with a bottle of Halfords Advanced bike cleaner, followed by a quick rinse - literally flicked a hose across it. This was followed by an hour of drying, gear fettling, chain cleaning and I even went around both tyres with a steel pick getting out all of those little bits of embedded flint.

As I was packing up, I rested the bike against a workbench in my garage. Apparently, I had rested it quite badly as it started that slow, slide, which usually ends up with the bike laying on it's side and the front wheel pointing skywards. Fortunately, it stopped - resting against my garage chair (every garage should have a comfy chair).

Given that it was resting against something soft, I left it whilst I put my MTB and the wife's MTB back in their resting place. At this point, I noticed something leaking from the TDF - water was literally pouring out of the back!!! I wasn't too concerned - imagining that it was draining from a hollow axle or something. Notwithstanding this, I was intrigued - so investigated further.

I must admit that what I found amazed me. Both lower rear frame tubes have a small drilling in them, which is not sealed. Given that they are low down - and, in normal operation, angled towards the bottom bracket, the provide the perfect entrance for water - which then has no escape.

After standing the bike vertically on it's back wheel for 5 minutes, I had two large puddles of very murky water on the garage floor.

Now, given the price point of the bike, I cannot imagine that the interior of the frame tubes is in any way protected. Had the bike not have fallen over, the water would still be resting in the tubes and, as it evaporated, would probably start to corrode the frame from within. In paranoid fashion, after thoroughly draining the frame tubes, I took a tin of GT85, inserted a straw, poked it through the drilling in the rear of each frame tube and gave them a good dousing.

Maybe I'm missing something here - and maybe there is a reason for these two little holes. But, to my mind, it's just oversight / bad design. Of course, there is also the possibility that the ends of the tubes should be protected and that the Halfrauds 'professional' who set the bike up (failing to tighten two handlebar bolts, missed the fact that the front calliper was mis-aligned and that the front mech cable was interfering with the cranks) has forgotten to fit said protection.

So, if you've got a TDF - and have used it in the wet, or ever washed it, I suggest that you check the rear frame tubes are not currently harbouring a litre or so of water!!!
 

Oldlegs

Frogs are people too.
Location
Norwich
Ian

Water in the frame is usual after a wet ride - it gets in down the seat tube if nowhere else.

If you get in the habit of flipping the frame to drain after wet rides shouldn't be a problem. Aluminium doesn't corrode significantly unlike steel!
 
OP
OP
IanT

IanT

http://www.sprocketwaffle.co.uk
Ian

Water in the frame is usual after a wet ride - it gets in down the seat tube if nowhere else.

If you get in the habit of flipping the frame to drain after wet rides shouldn't be a problem. Aluminium doesn't corrode significantly unlike steel!

Cheers Oldlegs. That's put my mind at rest a little.

Thanks,

Ian.
 
Holes are probably there as part of construction process. Somewhere for the hot gases produced and expansion/contraction of the air which would otherwise be trapped in the tube to escape to when welding the frame
 

wakou

Über Member
Location
Essex
My old MTB frame is is like a gorgonzola, unidentified holes everywhere, I was going to post a thread with pictures and ask on this forum. I had never considered whether it might be full of water. Worried now.
 

ayceejay

Guru
Location
Rural Quebec
I bought a pair of Mavic Ellipse wheels and I was horrified when I found a small hole in the sidewall of the rear one when I changed the sprocket. After a bit of a panic I checked the front wheel and there was a hole in that one too in exactly the same position. The information I got from Mavic was that when wheels are made they all look the same to the people sticking the decals on and the position of the hole is their indication.
 

henshaw11

Well-Known Member
Location
Walton-On-Thames
As mentioned, they're vent holes from manufacture - usually one in each of the seat/chainstays near the rear dropout, another pair near the front fork dropoups, and you may find the odd one or two elsewhere - plus the inside of the headtube will probably have holes where it meets the top tube and downtube . There may or may not be a cutout in the top of the bottom bracket tube/casting - if there is then water coming in through the top of the seattube might wind up in there. Might also be that if there's a hole on the BB shell where each chainstay meets it, then water coming out of the back might have come in via the seat tube

You mustn't to seal the holes - if any water gets in you want it to dry out. On a steel frame you can run some oil or waxoly into the holes to help prevent any rust (making sure that the holes are left unobscured afterwards,and if using oil, all the excess has drained out) - not sure anyone bothers much with ally frames, since the tubes will have a coating of ally oxide anyway (tho' salt wouldn't help matters). Liberally greasing the seattube/seatpost might help, tho' on one frame I have, the water seems to get down regardless - but it's an mtb with quick release so I'd just drop the seatpost out and invert the bike to let it drain.

Mudguards help ;) - another thing you can try is a short length of inner tube stretched over the seatpin/seatube to cover the slot - or even just a flap of inner tube sitting over the top of the seattube slot to keep the worst out.

If cables pass under the bottom bracket, the plastic guide there will almost certainly be held in place by a screw - you could remove this to help drain it (replacing it afterwards of course)
 
My Bianchi is like a water bottle. After a very wet Ken Laidlaw Borders Sportif, I heard a fair bit of swishing driving up the road with the bike in the boot, so when I got home I took the seatpost out and put the bike upside down, what seemed like a pint of water came rushing out. The next morning I ended up taking the bars off to let another pint out :rolleyes: My kinesis however has two holes in side the chain stays and doesn't seem to collect water despite having been ridden in worse conditions.
 

alecstilleyedye

nothing in moderation
Moderator
My Bianchi is like a water bottle. After a very wet Ken Laidlaw Borders Sportif, I heard a fair bit of swishing driving up the road with the bike in the boot, so when I got home I took the seatpost out and put the bike upside down, what seemed like a pint of water came rushing out. The next morning I ended up taking the bars off to let another pint out :rolleyes: My kinesis however has two holes in side the chain stays and doesn't seem to collect water despite having been ridden in worse conditions.

that was my experience (the '09 one?)

was mortified to think of the extra weight over the last few km…
 

david k

Hi
Location
North West
My Bianchi is like a water bottle. After a very wet Ken Laidlaw Borders Sportif, I heard a fair bit of swishing driving up the road with the bike in the boot, so when I got home I took the seatpost out and put the bike upside down, what seemed like a pint of water came rushing out. The next morning I ended up taking the bars off to let another pint out :rolleyes: My kinesis however has two holes in side the chain stays and doesn't seem to collect water despite having been ridden in worse conditions.

could you not drill holes in the bottom of all your bikes?
 
could you not drill holes in the bottom of all your bikes?

I'd rather not drill a hole in a carbon frame ;)

Does water have much affect on carbon fibre? its made me curious after reading this thread.

Not at all, my bianchi hasn't dissolved yet!!!! The only affect is the carbon on water, the frame acts like a bowl but no lasting effects ;)
 
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