EpicSki › The Barking Bear Forums › Off-Season Sports & The Lighter Side › Cycling › Underwater Bike Rebuild
New Posts  All Forums:Forum Nav:

Underwater Bike Rebuild

post #1 of 22
Thread Starter 
I was out for a ride Saturday and I thought I found my stolen bike. I was booking it back to the apt. in the pouring rain and I just happened to look over the side of the bridge around the corner, and there is a bike laying there half submerged.

I would have stopped to take a look, but I was soaked, cold and wearing road shoes (not good to climb a wet embankment in). Yesterday I drove by again with the car and walked down to take a look.

Unfortunately it wasn't my bike. But now it has my brain turning. Is it worth going back and fishing it out? It is about 5 feet from shore, and all I could tell was that it had drop bars and flat pedals. What is involved in rebuilding a bike that has been submerged?

At theleast I guess I could wipe the mud of and see what it is. If it is some old POS I can throw it back...

Or put it in a dumpster.
post #2 of 22
or clean it up and put on craigslist for cheap.
post #3 of 22
Quote:
Originally Posted by krp8128 View Post
What is involved in rebuilding a bike that has been submerged?
Using ammonia to free up any aluminum bits for the spare parts bin, then throwing all the steel bits into recycling.

Seriously, the last thing you want to do is invest money or time in something where no weld or braze can be relied on as rust or pitting-free.
post #4 of 22
Thread Starter 
Quote:
Originally Posted by comprex View Post
Using ammonia to free up any aluminum bits for the spare parts bin, then throwing all the steel bits into recycling.

Seriously, the last thing you want to do is invest money or time in something where no weld or braze can be relied on as rust or pitting-free.
How bad could it be? I'm thinking no visible rust=likely OK.

I would likely blast/sand the frame down and re-paint, it would be a good time to check all the joints...
post #5 of 22
Quote:
Originally Posted by krp8128 View Post
How bad could it be? I'm thinking no visible rust=likely OK.
If it is a steel frame, the first rust will be inside the frame, at the BB join, at the dropouts, and at the tube intersections.

Quote:
I would likely blast/sand the frame down and re-paint, it would be a good time to check all the joints...
All you need is -one- chainstay or fork blade to snap for much badness to occur.
post #6 of 22
Thread Starter 
awe, comprex ruins ALL the fun .

I didn't even give rust a thought. I figured if it looked like shit, throw it away. My big concern was the bearings having dirt in them.
post #7 of 22
If you really want to think about such things, another concern would be that it is an integrated headset, and the headset race is corroded away, pitted or otherwise deformed.
post #8 of 22
Fish it out >> Give it to Ghost, it doesn't matter what it is, it's better than what he has.
post #9 of 22
Quote:
Originally Posted by Whiteroom View Post
Fish it out >> Give it to Ghost, it doesn't matter what it is, it's better than what he has.
Dibs on the crank!
post #10 of 22
Thread Starter 
Checked it out again last night, it was quite waterlogged. I pulled it 1/2 way to shore and gave up...
post #11 of 22
Quote:
Originally Posted by krp8128 View Post
Checked it out again last night, it was quite waterlogged. I pulled it 1/2 way to shore and gave up...
You're such a tease.
post #12 of 22
Thread Starter 
Quote:
Originally Posted by comprex View Post
You're such a tease.
It rained the other day! The water level had gone up a bit...

Just picture a broom handle with a hanger duct tapped to the end. When that broke, I switched to a stick. That thing was heavy and had crap stick in the spokes.
post #13 of 22
I was actually picturing a hook or heavy weight on a rope.

Yeah, reckon the frame and tires are full of water, that should add, oh, lesse, ~2.4m of 30mm tubing + 1.3m of 25mm tubing = pi*1000*2.2*(2.4*0.000225+1.3*0.00015625), call it 5.2 lbs to something that probably started life as a 20-24lb bike?
post #14 of 22
Thread Starter 
Quote:
Originally Posted by comprex View Post
I was actually picturing a hook or heavy weight on a rope.

Yeah, reckon the frame and tires are full of water, that should add, oh, lesse, ~2.4m of 30mm tubing + 1.3m of 25mm tubing = pi*1000*2.2*(2.4*0.000225+1.3*0.00015625), call it 5.2 lbs to something that probably started life as a 20-24lb bike?
I was too but this was a spur of the moment fishing expedition at like 6:45 last night. I had rope but I left my grappling hook at my parents along with the utility belt...
post #15 of 22
Oh, not a criticism, just an opportunity for fun with Fermi questions.
post #16 of 22
Thread Starter 


Sorry, I watched Batman Begins last night, it was an opportunity for a reference.

Grappling hook is being fashioned as we speak (ok, type)...
post #17 of 22
I'm sure it is stolen....a favorite sport among kids. Steal a bike, ride it around a bit, chuck it off a bridge.

If it wasn't locked it probably isn't much good.
post #18 of 22
Thread Starter 
Quote:
Originally Posted by newfydog View Post
I'm sure it is stolen....a favorite sport among kids. Steal a bike, ride it around a bit, chuck it off a bridge.

If it wasn't locked it probably isn't much good.
newy,

my old ride WAS locked (in a locked basement too) and it was still stolen. Who knows what it was...
post #19 of 22
But those bikes they keep. The "snatch and chuck" bikes I see in the river are always something cheap.

Actually, we had a classic Bridgestone MB-1 taken from a porch behind the house. It wasn't locked, but the house had a gated drive and the bike was right by the back door.

Next spring I found a kid riding it around, still using tennis shoes on the step in pedals
post #20 of 22
Thread Starter 
Quote:
Originally Posted by newfydog View Post
Next spring I found a kid riding it around, still using tennis shoes on the step in pedals
Nice. What did you do to him? I'd love to side tackle or throw a stick through the spokes if I see someone on my bike, but I need to remember that they might have bought it stolen..
post #21 of 22
Quote:
Originally Posted by krp8128 View Post
Nice. What did you do to him? I'd love to side tackle or throw a stick through the spokes if I see someone on my bike, but I need to remember that they might have bought it stolen..
Don't do it; for all you know the kid could have gotten it at a police auction.
post #22 of 22
I asked him where he got the bike and a look of panic swept over him. He said his brother puts together bikes from parts and pieces they find at the dump. We showed him how the Big Dog Sticker on his bike which matched the sticker on my wife's other bike (which she was riding at the time) and he gave it over to us.

We took it to the RCMP, and updated the report we filed when it was stolen. They questioned the kid, and didn't pursue it. He said they found it at the dump with no rear wheel and fixed it up. His parents backed up his story.

I pointed out to the Mounties that photos of the bike submitted when it was stolen showed the same custom built wheel and tires, and suggested that perhaps the story didn't hold water. They never pursued it. It is just about impossible to convict a minor in Canada.

The next year some kids stole our Nordic club's grooming snowmobile. It had a special wide track, so I got on my XC skis and followed the tracks until I found it. I tried to knock the them off, but they roared around me and ditched the machine. Again, the RCMP never asked me to identify the kids.
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Cycling
EpicSki › The Barking Bear Forums › Off-Season Sports & The Lighter Side › Cycling › Underwater Bike Rebuild