ADVrider

Go Back   ADVrider > Riding > Ride reports
User Name
Password
Register Inmates Photos Site Rules Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
Old 11-28-2012, 10:53 AM   #901
ROD CURRIE
Gnarly Adventurer
 
ROD CURRIE's Avatar
 
Joined: Sep 2006
Location: Yorkshire and London, England
Oddometer: 472
Pond pics

Pruster got in this far before the airhead stopped

Photobucket

We hopped in to help him haul it back to the shore.

These pics don't show how deep it was. Off the sandbanks it was chest deep and trying to find the route between one sandbank and the next was the challenge.

The KTM was fine even in the deepest bits so when we got towards the far side I tried to hop on and ride it out. My boots were so heavy and trousers so full of water that I could barely lift my leg over the saddle.

Photobucket
ROD CURRIE is offline   Reply With Quote
Old 11-28-2012, 11:09 AM   #902
Francesco2
Adventurer
 
Joined: Jun 2010
Location: Holland
Oddometer: 13
Question

First off all: Great RR! The detailed info and backgrounds from Walter supplemented with the experiences of the other riders makes this a clifhanger

Quote:
Originally Posted by Prutser View Post
...When all the bikes were across I took out the spark plugs, drained the bike. By the time everyone was done wringing their socks......my bike was running and ready to go.(took about 10 min)
Just wondering as a beginning offroad rider, with no real watercrossing experience, how bad are these water intrusions for your engine? I mean, the water will flow along the ports/valves into the cilinderheads right? Your engine oil will mix up with some water which can't be doing any good to the engine lifespan...

This brings up the next question, maybe Walter can answer this, how many (hard-) offraod miles can a 650cc thumper withstand before needing a revision? Walter must have done several miles with his beemer isn't it? Did you guys take along spare oil on this trip?
Francesco2 is offline   Reply With Quote
Old 11-28-2012, 12:00 PM   #903
MrPulldown
Beastly Adventurer
 
MrPulldown's Avatar
 
Joined: Aug 2009
Location: Truckee
Oddometer: 2,558
Quote:
Originally Posted by Francesco2 View Post

Just wondering as a beginning offroad rider, with no real watercrossing experience, how bad are these water intrusions for your engine? I mean, the water will flow along the ports/valves into the cilinderheads right? Your engine oil will mix up with some water which can't be doing any good to the engine lifespan...
Bad. If your cylinder is full of water it will not compress. I have seen bent and broken rods from the piston trying to compress the water many times.
The fuel/oil/water mixing part is the least of your concerns. Your electircals can also short, frying everything.

Not a bike but you get the idea.
__________________
94 DR 350 SE
No Load LED Flash Relay and Diode Kits for Sale

MrPulldown screwed with this post 11-28-2012 at 12:08 PM
MrPulldown is offline   Reply With Quote
Old 11-28-2012, 12:36 PM   #904
allroadtoine
Adventurer
 
Joined: Dec 2007
Oddometer: 60
After a watercrossing the engine stopped and I was stupid enough to try to start the engine. Fortenately only the starter broke. Showed in my case the weakest part of the system and lukely not a hole in the piston..

Be carefull

Greetings

Toine
allroadtoine is online now   Reply With Quote
Old 11-28-2012, 01:34 PM   #905
dashmoto
Serial Tinkerer
 
dashmoto's Avatar
 
Joined: Dec 2008
Location: East Midlands, UK
Oddometer: 414
Quote:
Originally Posted by Francesco2 View Post
Just wondering as a beginning offroad rider, with no real watercrossing experience, how bad are these water intrusions for your engine? I mean, the water will flow along the ports/valves into the cilinderheads right? Your engine oil will mix up with some water which can't be doing any good to the engine lifespan...
There's a few things that can happen.

If the engine's still running when it sucks in water, you potentially have the sort of damage in the photo above.

If you turn it off as you fall in, or push it through deep water with the engine off, you'll get water in the airbox and probably exhaust, and unless the engine happens to have stopped with all the valves completely closed, it will end up in the cylinders. Even if you try and start it you won't bend conrods, etc, because the starter won't get it spinning hard enough, but you won't be able to get it running until you take the spark plug out and turn the engine over to pump it out.

If your bike has a crankcase breather which runs into the airbox (as a lot of bikes do), then the water in your airbox will inevitably flow downhill into the crankcase, and ruin the oil. This is A Bad Thing. I've done it twice to my XT660Z, so was utterly unsurprised on reading one of Colebatch's previous reports to find that Terry had done the same to the XT660R he had on that trip. I have a simple mod in mind to prevent it happening a third time (of course I thought of doing it after the first time I went swimming, then didn't actually manage to do it before the second time ).
__________________
(formerly 'uberthumper')

www.dashmoto.net
dashmoto is offline   Reply With Quote
Old 11-28-2012, 01:39 PM   #906
Prutser
Studly Adventurer
 
Prutser's Avatar
 
Joined: Aug 2012
Location: The Dutch swamp
Oddometer: 893
Quote:
Originally Posted by Francesco2 View Post
First off all: Great RR! The detailed info and backgrounds from Walter supplemented with the experiences of the other riders makes this a clifhanger



Just wondering as a beginning offroad rider, with no real watercrossing experience, how bad are these water intrusions for your engine? I mean, the water will flow along the ports/valves into the cilinderheads right? Your engine oil will mix up with some water which can't be doing any good to the engine lifespan...

This brings up the next question, maybe Walter can answer this, how many (hard-) offraod miles can a 650cc thumper withstand before needing a revision? Walter must have done several miles with his beemer isn't it? Did you guys take along spare oil on this trip?
When I checked the boxer didn't have water in the engine oil after this crossing. After draining the carbs and cilinders the bike was fine.
__________________
BMW R100'91/R80'93/R75/6 R80ST'83/R65GS'87/GasGasTXT300/DouglasW20-1920

R100GS'91 (sold)
Prutser is offline   Reply With Quote
Old 11-28-2012, 01:46 PM   #907
_cy_
Beastly Adventurer
 
Joined: Sep 2011
Location: Tulsa, Oklahoma
Oddometer: 5,327
yikes... sounds like some deep crossings...
_cy_ is online now   Reply With Quote
Old 11-28-2012, 02:19 PM   #908
hardwaregrrl
You talkin' to me?
 
hardwaregrrl's Avatar
 
Joined: Jan 2006
Location: Atlanta
Oddometer: 6,879
I often thought about some sort of compression/rubber sock we could put over our float bowls to keep the H2O out. Ah, the mighty airhead!!!!!!!! Thanks for taking us along Prutser!!!
hardwaregrrl is offline   Reply With Quote
Old 11-28-2012, 02:52 PM   #909
Colebatch OP
"Moto Porn"ographer
 
Colebatch's Avatar
 
Joined: Jul 2006
Location: Schmocation
Oddometer: 3,960
flat battery

Unfortunately my bike wasnt fine. Still with water in my fuel. I kept turning the bike over trying to pump the water out of the tank via the engine.

After an incredible amount of cranking, my battery finally died. We had no choice but to try and jump start it. Prutser had the most torque so offered to tow me up the top of a nearby hill.

Unfortunately we were lazy and connected the bikes up incorrectly.



So when we got to the crest of the hill, and slowed down, slack came into the rope, and it caught on my front wheel knobblies, got sucked into the front wheel and jammed it up solid. With the front wheel locked up, there was only one place for me to go ... down!

With the bike and myself back on our feet, and the bike still not wanting to start, We decided to tow it properly. Footpeg to footpeg. There was a gravel road 2km away, and a village about 10 km (6 miles) away. We can try and tow it there while occasionally trying to clutch start it along the way. Terry stepped up to be the tow bike. The others followed sedately as we towed at 40 km/h

__________________
*** New Sibirsky Extreme Trail DVD Trailer HERE ***
Moroccan Extreme 2011 DVD available HERE
World Motorcycle Altitude Record video HERE
Sibirsky Extreme - The Home of Adventure Motorcycling in Siberia and Mongolia - On Facebook
Colebatch is offline   Reply With Quote
Old 11-28-2012, 02:53 PM   #910
hardwaregrrl
You talkin' to me?
 
hardwaregrrl's Avatar
 
Joined: Jan 2006
Location: Atlanta
Oddometer: 6,879
Loving it Walter. No jumper cables?
hardwaregrrl is offline   Reply With Quote
Old 11-28-2012, 03:07 PM   #911
Prutser
Studly Adventurer
 
Prutser's Avatar
 
Joined: Aug 2012
Location: The Dutch swamp
Oddometer: 893
Quote:
Originally Posted by hardwaregrrl View Post
I often thought about some sort of compression/rubber sock we could put over our float bowls to keep the H2O out. Ah, the mighty airhead!!!!!!!! Thanks for taking us along Prutser!!!
The R100GS I had before this bike had no problem with H2O ( up to a certain level ) could keep it running as long as I liked with the water just under the intake.

I'm afraid it wasn't "the mighty Airhead" at this point
__________________
BMW R100'91/R80'93/R75/6 R80ST'83/R65GS'87/GasGasTXT300/DouglasW20-1920

R100GS'91 (sold)
Prutser is offline   Reply With Quote
Old 11-28-2012, 06:56 PM   #912
igormortis
Beastly Adventurer
 
igormortis's Avatar
 
Joined: Dec 2006
Location: Moving further away from Wellington, New Zealand
Oddometer: 1,189
Quote:
Originally Posted by Prutser View Post
The R100GS I had before this bike had no problem with H2O...
So did you diagnose the problem - where was the water getting in?

Great RR, as usual - love the towing pic, Prutser!
igormortis is offline   Reply With Quote
Old 11-28-2012, 07:05 PM   #913
xuare
Gravity wins again
 
xuare's Avatar
 
Joined: Sep 2011
Location: Pavlodaistan, VA
Oddometer: 220
Quote:
Originally Posted by Prutser View Post
The R100GS I had before this bike had no problem with H2O ( up to a certain level ) could keep it running as long as I liked with the water just under the intake.

I'm afraid it wasn't "the mighty Airhead" at this point
It was my belief that a carb bowl also has a vent, and that vent needs to be to atmosphere (i.e. not the airbox) so the pressure differential between the intake manifold and outside can be used to help meter the gas correctly. If water covers the vent the bike dies.

Is this what was stopping bikes?
xuare is offline   Reply With Quote
Old 11-28-2012, 10:17 PM   #914
Colebatch OP
"Moto Porn"ographer
 
Colebatch's Avatar
 
Joined: Jul 2006
Location: Schmocation
Oddometer: 3,960
Quote:
Originally Posted by hardwaregrrl View Post
Loving it Walter. No jumper cables?
Don't need them. Terry and I were experienced in the art of jump starting without cables. You hold a good battery against the dead one - making sure negative terminals touch - then connect the positives via a screwdriver Jen.

But we still had to get the water out of my fuel. By now we had decided to head for the village and think about it there. Terry towed me there
__________________
*** New Sibirsky Extreme Trail DVD Trailer HERE ***
Moroccan Extreme 2011 DVD available HERE
World Motorcycle Altitude Record video HERE
Sibirsky Extreme - The Home of Adventure Motorcycling in Siberia and Mongolia - On Facebook
Colebatch is offline   Reply With Quote
Old 11-29-2012, 01:28 AM   #915
mrwwwhite
Gnarly Adventurer
 
mrwwwhite's Avatar
 
Joined: Jun 2010
Location: Bucharest or RTW
Oddometer: 298
damn dude, that's an outstanding trip, now I gotta take my bike thru those rivers one day. kudos to you all, balls of steel!
mrwwwhite is offline   Reply With Quote
Reply

Share

Thread Tools Search this Thread
Search this Thread:

.
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


Times are GMT -7.   It's 02:26 AM.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ADVrider 2011-2014