roll over a four stroke?
- Thread starter Kruchy
- Start date
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izzni
Well-known member
Letting it sit the same amount of time you had it on the roof should be more than enough.
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Insaneboltrounder/sjohns
Well-known member
So..... about 40 replies and no clear answer about the cat motor yet.
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KJFarmer
Active member
It will more than likely have a dry sump setup on it which is good on slopes and steep angles, wouldnt recommend it upside down. The vent is where its gonna leak upside down, fix for the yamahas was a electric valve that was tied in with the tether so when the tether gets pulled the vent valve closes and stops any oil from leaking out. All depends if arctic cat figured something out right away or have to put a valve on it from an aftermarket supplier
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izzni
Well-known member
Out of curiosity, how long was it upside down for? The Nytros and Phazer only leaked only after 20 or 30 seconds upside down.
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aksnopro
Well-known member
i watched a guy in Turnagain roll his m8 over and the when the handlebars went into the snow it pinned the throttle, blew a belt and ripped a hole in his plastics from belt debris (was still pinned after it broke spun a cord like a saw)
he couldn't get near his sled with that track spinning that fast and the machine moving all over! the belt finally blew and he was able to flip it back over and shut it off
ever since then i turn it off. lol
-Aksnopro
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samiams2
Well-known member
Can anyone else confirm or has anyone talked to a cat rep?
I will ask a rep when I go to the show this weekend.
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danjpohl
New member
I just sold my Nytro and this valve was great. There were many times when the easiest way to get the heavy sled unstuck was to put it on its side and spin it around. Prior to getting this the Yamaha could not be upside down or on its left side. On its right was ok.
The oil would drain out of the reservoir into the airbox.
http://oftracing.com/Store/index.php?main_page=product_info&cPath=78&products_id=215
This kit was plug and play...
If cat does not do it from the factory, hopefully someone will come out with something similar
The oil would drain out of the reservoir into the airbox.
http://oftracing.com/Store/index.php?main_page=product_info&cPath=78&products_id=215
This kit was plug and play...
If cat does not do it from the factory, hopefully someone will come out with something similar
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samiams2
Well-known member
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JSCC
Well-known member
So do the Yamahas. Don't save them under the right circumstance. I will say it again, if you ride a four stroke wear a tether.
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samiams2
Well-known member
Im not gonna roll ANY SLED while it is running. No reason.and I will wear a tether. I am more concerned about dumping oil out of the air box.... or wherever it comes out. I have no experience with these four bangers and I'm trying to figure out the concerns I should haveor at least be aware of before getting one.
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samiams2
Well-known member
Im not gonna roll ANY SLED while it is running. No reason.and I will wear a tether. I am more concerned about dumping oil out of the air box.... or wherever it comes out. I have no experience with these four bangers and I'm trying to figure out the concerns I should haveor at least be aware of before getting one.
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JSCC
Well-known member
You know, I am not sure why it works sometimes and other times it dont. My Apex has shut down many times from no oil pressure if I tail walk it for too long then come down fast. But other times, one time in particular
, it don't sense it fast enough! Strange.
Hopefully Ac has a better setup that shuts them down better.....
, it don't sense it fast enough! Strange.Hopefully Ac has a better setup that shuts them down better.....
On stock Nytros and Phazers the dry sump oil tank is vented directly to the air box. When the sled is rolled over past a certain angle oil will drain out of the tank through the 5/8" breather vent hose into the air box. Because a running engine is producing positive air flow out through the breather line, if the engine is still running while the sled is upside down it will pump the oil out even faster.
Apexes/RX-1 are set up differently. Instead of venting the tank to the air box, they are vented to the crankcase. An Apex can still loose oil out of the crankcase breather, however it takes longer to do so. Also the oil thats going to leak out is from the lower crankcase. On dry sump systems approx 90% of the oil is stored in the tank even while the engine is running. So an Apex has to sit upside down for a much longer peroid of time to loose a large amount of oil, compared to a Nytro or Phazer.
Like any four stroke, an Apex/RX-1 can still have oil starvation concerns if the engine is still running while the sled is upside down though.
I have not seen how the new Cats are set up yet. It is possible that they may have a similar set-up to an Apex. Which would explain why it hasn't been much of an issue. If an M1100 owner is experiencing oil loss during roll-overs, go ahead and shoot me a PM or e-mail and we could probably work something out. I'm curious to see how the new Cats are set-up.
Bill
Apexes/RX-1 are set up differently. Instead of venting the tank to the air box, they are vented to the crankcase. An Apex can still loose oil out of the crankcase breather, however it takes longer to do so. Also the oil thats going to leak out is from the lower crankcase. On dry sump systems approx 90% of the oil is stored in the tank even while the engine is running. So an Apex has to sit upside down for a much longer peroid of time to loose a large amount of oil, compared to a Nytro or Phazer.
Like any four stroke, an Apex/RX-1 can still have oil starvation concerns if the engine is still running while the sled is upside down though.
I have not seen how the new Cats are set up yet. It is possible that they may have a similar set-up to an Apex. Which would explain why it hasn't been much of an issue. If an M1100 owner is experiencing oil loss during roll-overs, go ahead and shoot me a PM or e-mail and we could probably work something out. I'm curious to see how the new Cats are set-up.
Bill
