Gentlemen,
I been a Bauer fan and have only owned Bauer all my life since early 90s.
In fact my new Mariner 200E is coming soon....Yipeeee !!!!
I like Bauer but the cost of parts made my cheap 1.5 liter Toyota spare parts cost look even cheaper.....
If I ever need to get a second back up unit, I want to try other brand.
There are only 3 brands available in my country :
Bauer ( poisedon ), Coltri and LW
Bauer sell the most
Coltri 2nd
LW, very rare user group.
I am doing a research and I know price difference means something mechanicaly is different.
I am tempted to get Coltri as a second/back up unit when the need arises and I am trying to see why its cheaper ( for my country ) than Bauer and service life usually shorter according to my friends who are doing air fills. I can't say how my friends maintain their unit but I know they run it hard on weekends, 40-60 bottles a day easy at their dive resort.
I know more about marine diesel engine than compressor, but the physics is the same. Excessive friction, higher RPM & heat will kill any rotating mechanical device fast.
I am not a fan of Bauer Junior or whatever Bauer running more than 2,000 RPM and a splash lubricated type.
As I was looking at ColtriSub data sheet, I find it odd that their units upto MCH18 ( 300Liter/Minute ) do not have oil pump like the Bauer Capitano or Mariner. Older Bauer use 50BAR oil pump with the ring-less floating final stage piston and sometime in early 2000s ( ???? ) they introduce a new block with 10 BAR ( ?? correct me ) oil pump, add an oil filter and introduce the final stage floating piston with polymer piston rings.
The part list book of 2004 for Capitano/Mariner did not put a service life on this final stage floating piston with polymer rings. In 2007 part list book of Capitano/Mariner, suddenly Bauer stated 1,000 hours service life, which they call B category. From a no time schedule suddenly to 1,000 hours is sad, if it goes to 2000 hours still not too bad.
Does this mean Bauer realized that their polymer piston rings can't stand the abuse as they initially predicted or they love to juice us for more dollars...?
What I can not confirm yet because my new Mariner 200 has not arrive, is whether the new Bauer block with oil filter and 10BAR oil pump feeds the second stage piston ring with pressurized oil. The old Capitano/Mariner 50 BAR oil pump has a feeding oil tube to the liner of 2nd stage piston, aside from the floating piston 3rd stage.
Does anyone knows if the new Bauer Capitano/Mariner block has internal pressurized oil gallery feeding the second stage piston liner with oil , or how does Bauer lubricate this 2nd stage piston rings ?
Looking at the 2007 part list, the 2nd stage piston of Capitano/Mariner is so different from the old one. Its not same diameter at the pin (big ) and at the rings area (small ).
In fact from parts list of a Coltri MCH13 to 16, almost similiar piston shape is used on Coltri 2nd stage piston too.
Now back to Coltri. The parts list of MCH 13 to 16 shows some sort of oil tube into the 3rd stage floating piston, I assume its fed by oil vapor from the crankcase since there is no oil pump. Is this the case guys ?
My old Bauer Mariner has similiar oil tube from crankcase but the feeding is at the cylinder head of 1st stage, so its for the inlet and exhaust valve ( reed valve type ) lubrication and that will mean the second stage cylinder head will get the oil mist too, untill its removed by the water separator.
So to sumarize OLD Bauer Capitano/Mariner lubrication system :
Bauer piston 1st stage - splash lubricated
Bauer 1st stage in/out valves - oil mist lubricated
Bauer piston 2nd stage - pressurized lubrication, pressure I don't know because its a "by-product" of 50 BAR pressure. Anyone knows?
Bauer 2nd stage in/out valves - oil mist carry over from by air line from 1st stage
Bauer 3rd stage piston ( connected to crankshaft ) - piston has holes, no oil or compression rings
Bauer 3rd stage floating piston - pressurized lubrication 50BAR
It will be nice if Craig can assist with my summary accuracy.
NEW/CURRENT BAUER
Capitano 140 Liter /Mnt..RPM 1,300.. IK100 block, different
Mariner 200 Liter /Mnt....RPM 1,300.. IK120 block
Mariner 250 Liter / Mnt...RPM 1,450.. IK120 block
Mariner 320 L/M ...........RPM 1,450 .. IK12.14 block, different
Now the question on Bauer.
Anyone owned both the new Mariner 200 ( 10BAR ) and the old Mariner (50 BAR) ? Which one is more reliable, assuming you have pushed both to 4,000+ hours ?
NEW/CURRENT Coltri MCH 13 - 18 Lubrication system :
* I hope Ray can help me out here if there is anything I miss or made mistake
- No oil pump
- Splash lubrication for all pistons
- Oil mist lubrication for 3rd stage floating piston
NEW/CURRENT COLTRISUB
MCH 13 ( 200 L/M )...RPM 1,350
MCH 16 ( 265 L/M )...RPM 1,550
MCH 18 ( 300 L/M )...RPM 1,800
The parts list is in Italian for parts description, I am lost. I think all share common parts, output is boosted thru higher RPM, similiar to Mariner 200 to 250.
Now for the final consideration.
Assuming I do 1,200 hours a year compressor running (+- 3.3 hours a day ) and will use the compressor for 4 years. I don't know Coltri cost of parts, but I assume its cheaper. Purchase cost , cost of parts for very proper maintenance in order not to have unscheduled breakdown in 6000 hours and final resale value = actual cost of ownership.
Which is a better choice, MCH 13 or Bauer Mariner ? Filter catridge cost no need to consider.
Part of my side job is trouble shooting ( my man rip them apart, I only trouble shoot ) marine diesel engines, the high speed 2,300RPM ones. If i merely based my choice on the pressurize oil lubrication system, I will go for Bauer again as back up unit. However compressor does not have upper valve trains like engines that need good lubrication. The shape of the crankcase of a Coltri and Bauer also seems to allow splash lubrication to do better/decent than say a 4 cylinder in line engine.
If anyone owns Bauer Mariner 200/250 and a Coltri MCH 13/16, I would like to hear your experience please.
Many Thanks guys...
IYA
I been a Bauer fan and have only owned Bauer all my life since early 90s.
In fact my new Mariner 200E is coming soon....Yipeeee !!!!
I like Bauer but the cost of parts made my cheap 1.5 liter Toyota spare parts cost look even cheaper.....
If I ever need to get a second back up unit, I want to try other brand.
There are only 3 brands available in my country :
Bauer ( poisedon ), Coltri and LW
Bauer sell the most
Coltri 2nd
LW, very rare user group.
I am doing a research and I know price difference means something mechanicaly is different.
I am tempted to get Coltri as a second/back up unit when the need arises and I am trying to see why its cheaper ( for my country ) than Bauer and service life usually shorter according to my friends who are doing air fills. I can't say how my friends maintain their unit but I know they run it hard on weekends, 40-60 bottles a day easy at their dive resort.
I know more about marine diesel engine than compressor, but the physics is the same. Excessive friction, higher RPM & heat will kill any rotating mechanical device fast.
I am not a fan of Bauer Junior or whatever Bauer running more than 2,000 RPM and a splash lubricated type.
As I was looking at ColtriSub data sheet, I find it odd that their units upto MCH18 ( 300Liter/Minute ) do not have oil pump like the Bauer Capitano or Mariner. Older Bauer use 50BAR oil pump with the ring-less floating final stage piston and sometime in early 2000s ( ???? ) they introduce a new block with 10 BAR ( ?? correct me ) oil pump, add an oil filter and introduce the final stage floating piston with polymer piston rings.
The part list book of 2004 for Capitano/Mariner did not put a service life on this final stage floating piston with polymer rings. In 2007 part list book of Capitano/Mariner, suddenly Bauer stated 1,000 hours service life, which they call B category. From a no time schedule suddenly to 1,000 hours is sad, if it goes to 2000 hours still not too bad.
Does this mean Bauer realized that their polymer piston rings can't stand the abuse as they initially predicted or they love to juice us for more dollars...?
What I can not confirm yet because my new Mariner 200 has not arrive, is whether the new Bauer block with oil filter and 10BAR oil pump feeds the second stage piston ring with pressurized oil. The old Capitano/Mariner 50 BAR oil pump has a feeding oil tube to the liner of 2nd stage piston, aside from the floating piston 3rd stage.
Does anyone knows if the new Bauer Capitano/Mariner block has internal pressurized oil gallery feeding the second stage piston liner with oil , or how does Bauer lubricate this 2nd stage piston rings ?
Looking at the 2007 part list, the 2nd stage piston of Capitano/Mariner is so different from the old one. Its not same diameter at the pin (big ) and at the rings area (small ).
In fact from parts list of a Coltri MCH13 to 16, almost similiar piston shape is used on Coltri 2nd stage piston too.
Now back to Coltri. The parts list of MCH 13 to 16 shows some sort of oil tube into the 3rd stage floating piston, I assume its fed by oil vapor from the crankcase since there is no oil pump. Is this the case guys ?
My old Bauer Mariner has similiar oil tube from crankcase but the feeding is at the cylinder head of 1st stage, so its for the inlet and exhaust valve ( reed valve type ) lubrication and that will mean the second stage cylinder head will get the oil mist too, untill its removed by the water separator.
So to sumarize OLD Bauer Capitano/Mariner lubrication system :
Bauer piston 1st stage - splash lubricated
Bauer 1st stage in/out valves - oil mist lubricated
Bauer piston 2nd stage - pressurized lubrication, pressure I don't know because its a "by-product" of 50 BAR pressure. Anyone knows?
Bauer 2nd stage in/out valves - oil mist carry over from by air line from 1st stage
Bauer 3rd stage piston ( connected to crankshaft ) - piston has holes, no oil or compression rings
Bauer 3rd stage floating piston - pressurized lubrication 50BAR
It will be nice if Craig can assist with my summary accuracy.
NEW/CURRENT BAUER
Capitano 140 Liter /Mnt..RPM 1,300.. IK100 block, different
Mariner 200 Liter /Mnt....RPM 1,300.. IK120 block
Mariner 250 Liter / Mnt...RPM 1,450.. IK120 block
Mariner 320 L/M ...........RPM 1,450 .. IK12.14 block, different
Now the question on Bauer.
Anyone owned both the new Mariner 200 ( 10BAR ) and the old Mariner (50 BAR) ? Which one is more reliable, assuming you have pushed both to 4,000+ hours ?
NEW/CURRENT Coltri MCH 13 - 18 Lubrication system :
* I hope Ray can help me out here if there is anything I miss or made mistake
- No oil pump
- Splash lubrication for all pistons
- Oil mist lubrication for 3rd stage floating piston
NEW/CURRENT COLTRISUB
MCH 13 ( 200 L/M )...RPM 1,350
MCH 16 ( 265 L/M )...RPM 1,550
MCH 18 ( 300 L/M )...RPM 1,800
The parts list is in Italian for parts description, I am lost. I think all share common parts, output is boosted thru higher RPM, similiar to Mariner 200 to 250.
Now for the final consideration.
Assuming I do 1,200 hours a year compressor running (+- 3.3 hours a day ) and will use the compressor for 4 years. I don't know Coltri cost of parts, but I assume its cheaper. Purchase cost , cost of parts for very proper maintenance in order not to have unscheduled breakdown in 6000 hours and final resale value = actual cost of ownership.
Which is a better choice, MCH 13 or Bauer Mariner ? Filter catridge cost no need to consider.
Part of my side job is trouble shooting ( my man rip them apart, I only trouble shoot ) marine diesel engines, the high speed 2,300RPM ones. If i merely based my choice on the pressurize oil lubrication system, I will go for Bauer again as back up unit. However compressor does not have upper valve trains like engines that need good lubrication. The shape of the crankcase of a Coltri and Bauer also seems to allow splash lubrication to do better/decent than say a 4 cylinder in line engine.
If anyone owns Bauer Mariner 200/250 and a Coltri MCH 13/16, I would like to hear your experience please.
Many Thanks guys...
IYA