banshee and reverse
Oct 20, 2005 | 10:12 PM
#41
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banshee and reverse
WOW,this post has it all from air planes to helicopters,smart a$$,dumb a$$,some deal on e-bay,and a banshee running backwards...WOW,thats,thats.well hell i don't know what to call it but my god i'm going to save this post so when i need a good laugh i'll just look it up..lol oh thats funny.
Oct 20, 2005 | 10:33 PM
#42
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banshee and reverse
Originally posted by: YFZ450kid
thats great, if you started the motor in a reverse state, it WOULD NOT LAST!!! the main bearings are made to only run in one direction to allow proper oiling to take place... just think of an engine building 101 class, it makes sense, the bearings are designed to run toward one direction, if it goes backward, the oil does not flow properly... even if some how you magicly got the thing to start, and oil the rod bearings the babbit material would simply go away, possibly ending up on the cylinder walls screwing up the top end also... so, the theory of a banshee motor starting backward is moderately flawed... to add reverse, you would have to back down to a 5 speed transmission (to fit the reverse assy.) and add a reverse gear assy. if there was enough room, and I dont believe that any aftermarket company makes such a conversion...
Originally posted by: NEWDUCK
When you start a banshee motor it is set up to go forward so in other words if you start the motor in reverse from the way it is supposed to spin then you have reverse in all six gears instead of all 6 in forward
When you start a banshee motor it is set up to go forward so in other words if you start the motor in reverse from the way it is supposed to spin then you have reverse in all six gears instead of all 6 in forward
thats great, if you started the motor in a reverse state, it WOULD NOT LAST!!! the main bearings are made to only run in one direction to allow proper oiling to take place... just think of an engine building 101 class, it makes sense, the bearings are designed to run toward one direction, if it goes backward, the oil does not flow properly... even if some how you magicly got the thing to start, and oil the rod bearings the babbit material would simply go away, possibly ending up on the cylinder walls screwing up the top end also... so, the theory of a banshee motor starting backward is moderately flawed... to add reverse, you would have to back down to a 5 speed transmission (to fit the reverse assy.) and add a reverse gear assy. if there was enough room, and I dont believe that any aftermarket company makes such a conversion...
1) It's not a 4 stroke, the bearings get oiled by being saturated by the fuel/oil mixture as it get's sucked into crankcase before being forced through ports into cylinder.
2) No, these bearings you're speaking of are not intended to run in one direction. Have you ever seen a directional arrow or anything like that on a crank or rod bearing?
3) As I said earlier, some motors that are in boats are set up to run backwards by installing a different cam and starter.
If what you meant to say was that with a car/ truck/ boat engine that has brass bearings, not needle bearings, will have a wear pattern in them specific to the rotation they were broken into and may fail if run bacwards, then yea you'd be right. But, a lot of different snowmobile engines run backwards for reverse. This is unique to 2 strokes.
Oct 21, 2005 | 12:10 AM
#43
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banshee and reverse
All two stroke golf carts I have worked on start the engine in reverse to make reverse. It's very, very simple. They have a DC starter/generator. On a DC set-up you just reverse the leads to turn the starter backwards. Bingo, bango, you go backward. When the engine is running the generator kicks in and makes juice for the battery.
My old 75 Yamaha 125 had the same set-up. (A starter/gererator.) It was a neat deal, but heavy.
My old 75 Yamaha 125 had the same set-up. (A starter/gererator.) It was a neat deal, but heavy.
Oct 21, 2005 | 01:53 AM
#44
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banshee and reverse
Originally posted by: Sparky8370
Think so?
1) It's not a 4 stroke, the bearings get oiled by being saturated by the fuel/oil mixture as it get's sucked into crankcase before being forced through ports into cylinder.
2) No, these bearings you're speaking of are not intended to run in one direction. Have you ever seen a directional arrow or anything like that on a crank or rod bearing?
3) As I said earlier, some motors that are in boats are set up to run backwards by installing a different cam and starter.
If what you meant to say was that with a car/ truck/ boat engine that has brass bearings, not needle bearings, will have a wear pattern in them specific to the rotation they were broken into and may fail if run bacwards, then yea you'd be right. But, a lot of different snowmobile engines run backwards for reverse. This is unique to 2 strokes.
Originally posted by: YFZ450kid
thats great, if you started the motor in a reverse state, it WOULD NOT LAST!!! the main bearings are made to only run in one direction to allow proper oiling to take place... just think of an engine building 101 class, it makes sense, the bearings are designed to run toward one direction, if it goes backward, the oil does not flow properly... even if some how you magicly got the thing to start, and oil the rod bearings the babbit material would simply go away, possibly ending up on the cylinder walls screwing up the top end also... so, the theory of a banshee motor starting backward is moderately flawed... to add reverse, you would have to back down to a 5 speed transmission (to fit the reverse assy.) and add a reverse gear assy. if there was enough room, and I dont believe that any aftermarket company makes such a conversion...
Originally posted by: NEWDUCK
When you start a banshee motor it is set up to go forward so in other words if you start the motor in reverse from the way it is supposed to spin then you have reverse in all six gears instead of all 6 in forward
When you start a banshee motor it is set up to go forward so in other words if you start the motor in reverse from the way it is supposed to spin then you have reverse in all six gears instead of all 6 in forward
thats great, if you started the motor in a reverse state, it WOULD NOT LAST!!! the main bearings are made to only run in one direction to allow proper oiling to take place... just think of an engine building 101 class, it makes sense, the bearings are designed to run toward one direction, if it goes backward, the oil does not flow properly... even if some how you magicly got the thing to start, and oil the rod bearings the babbit material would simply go away, possibly ending up on the cylinder walls screwing up the top end also... so, the theory of a banshee motor starting backward is moderately flawed... to add reverse, you would have to back down to a 5 speed transmission (to fit the reverse assy.) and add a reverse gear assy. if there was enough room, and I dont believe that any aftermarket company makes such a conversion...
1) It's not a 4 stroke, the bearings get oiled by being saturated by the fuel/oil mixture as it get's sucked into crankcase before being forced through ports into cylinder.
2) No, these bearings you're speaking of are not intended to run in one direction. Have you ever seen a directional arrow or anything like that on a crank or rod bearing?
3) As I said earlier, some motors that are in boats are set up to run backwards by installing a different cam and starter.
If what you meant to say was that with a car/ truck/ boat engine that has brass bearings, not needle bearings, will have a wear pattern in them specific to the rotation they were broken into and may fail if run bacwards, then yea you'd be right. But, a lot of different snowmobile engines run backwards for reverse. This is unique to 2 strokes.
ok, ok, my bad, i didnt quite get what i was saying across to you... Banshee motors are built with one way connecting rod bearings... unless they have changed from the last time I built one...
