Mercury's Turbo Engines
02-21-2010, 11:30 PM
#261
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this is the intake adapter for some twin turbo engines we are building... it started out as a big block of aluminum and then i machined out an adapter to go from the throttle body size and bolt pattern to the intake size and bolt pattern. the fuel injectors will be inside the intake adapter, will make for a cleaner look on the outside of the engine.. with no fuel rail or injectors or wiring showing.. and the little piece is the fuel injector retainer that holds the injector to the adapter..
and yes that is a manual machine, and yes it took along time to make,,, right after i took one of these pics the big endmill I was using to take away big chunks of aluminum broke and caught the part and through it 30 feet past me.. good thing is it only put a little dent in an edge that was going to come off anyway..
and yes that is a manual machine, and yes it took along time to make,,, right after i took one of these pics the big endmill I was using to take away big chunks of aluminum broke and caught the part and through it 30 feet past me.. good thing is it only put a little dent in an edge that was going to come off anyway..
02-21-2010, 11:40 PM
#262
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we wont have any blower belt dust.. speaking of blower belt dust... have you ever used the blue silicone coated carbon blower belts... we put them in delos nortech and after he ran it it looked like someone killed papa smurf in the engine compartment with all the blue dust..
02-21-2010, 11:52 PM
#263
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Yes, in our turbine engines we indeed have tapered roller bearings and beveled gears running thousands of hours under max load @ 22,000 rpm. Our engines run horizontal in a hellacious vibratory environment and very high rotational inertia/gyroscopic effects. An these bearings are not small either.
Ball bearings for turbos....that is old news. I worked on magnetically levitated bearings 14 years ago to replace failing roller bearings.
I'm not BS'ing here. Aerospace techniques would revolutionize the marine industry. Just look at how the old (1960's design) t-53 lycoming push go-fast boats past the 200 mph mark with great reliability!
If you say it can't be done, then I'll know that you won't be doing it and will be the first to remind me if I ever take on the endevour.
Ball bearings for turbos....that is old news. I worked on magnetically levitated bearings 14 years ago to replace failing roller bearings.
I'm not BS'ing here. Aerospace techniques would revolutionize the marine industry. Just look at how the old (1960's design) t-53 lycoming push go-fast boats past the 200 mph mark with great reliability!
If you say it can't be done, then I'll know that you won't be doing it and will be the first to remind me if I ever take on the endevour.
BTW- We are friendly with the GAS crew that did the swap. . They did this for fun not to be competitive or even market it. Think about that for a minute.
02-21-2010, 11:55 PM
#264
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this is the intake adapter for some twin turbo engines we are building... it started out as a big block of aluminum and then i machined out an adapter to go from the throttle body size and bolt pattern to the intake size and bolt pattern. the fuel injectors will be inside the intake adapter, will make for a cleaner look on the outside of the engine.. with no fuel rail or injectors or wiring showing.. and the little piece is the fuel injector retainer that holds the injector to the adapter..
and yes that is a manual machine, and yes it took along time to Good old vertical mill. that’s some real nice work you did there.part and through it 30 feet past me.. good thing is it only put a little dent in an edge that was going to come off anyway..
and yes that is a manual machine, and yes it took along time to Good old vertical mill. that’s some real nice work you did there.part and through it 30 feet past me.. good thing is it only put a little dent in an edge that was going to come off anyway..
02-21-2010, 11:57 PM
#265
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There is a tremendous science to bearings and gears. I've been involved with these details for many years in aerospace. Some drive transmissions I've worked have lasted over 20,000 hours in tightly optimized packages. Coatings and precision is everything in the world of longevity. I would be happy to share some wisdom. How about a coating that is 95 Rc hardness with coef. of friction at 0.09? Chrome is 70Rc and 0.2 coef. Friction. Chrome also likes to peel and Flake, especially at high temps. Gear cutting techniques like undercutting of the pitch diameter do worlds to reduce noise and heat. Some nicely ABEC classed bearings can handle very high loads at very fast rpms.
Regardless of the endless possibilities in refinement, Australian guy already ran a 900 hp triple, now he is setting up a Quad turbo rotor based on previous success. I'm sure he dealt with many naysayers along the way!
Regardless of the endless possibilities in refinement, Australian guy already ran a 900 hp triple, now he is setting up a Quad turbo rotor based on previous success. I'm sure he dealt with many naysayers along the way!
Most coatings are over priced bs including the micro polishing (REM). They will provide heat control threw friction reduction but can not due much for strength. If we brake a tooth of a gear it the base there is no coating etc in the world that will help. The parent metal will need to change or size of the gear.
Are any of the gears made of something good such as a 300m metal? If not I could have my gear cutter whip some up. We have found for high load and or shock shafts/gears including steel connecting rods the 300m although not cheap is the best.
Here is my real ??? What type of failure do over revved and over powered drives suffer from?
02-21-2010, 11:58 PM
#266
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Thats funny. No, I have not tried those belts. It wasn't blower belt dust, it was from the accessory V belts. It only took about a thimble full of dust to plug that little filter. That is why I got away from them. They are only about 1/2" diameter and about 3/4" long. They were just to small. They would actually starve the engine for air when they got just a little dirty. Just a heads up. I'm not sure what you were going to use for a filter...just don't use them.
By the way, nice work on the mill. Put up some shots when it is finished. i would love to see it.
Eddie
By the way, nice work on the mill. Put up some shots when it is finished. i would love to see it.
Eddie
02-22-2010, 01:54 AM
#267
PF Marine
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we wont have any blower belt dust.. speaking of blower belt dust... have you ever used the blue silicone coated carbon blower belts... we put them in delos nortech and after he ran it it looked like someone killed papa smurf in the engine compartment with all the blue dust..
We haven't tried the gates polychain carbon/blue belts.... But we started out using just a regular old polychain, and after probably 20 pulls on the dyno, there was dust coating everything on the front of the motor! We now run the gates powergrip gt 8mm with the RCD pullies and have never had an issue/failure with the huge loading and unloading of the PSI's when throttling. Still have some belt dust, but not like the polychains.
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02-22-2010, 08:05 AM
#269
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Gear teeth can't be hard, but the coating can be for enduring high contact stresses.
Yes, we do have bevel gears operating at 22k rpms. All of our gearboxes use the same methodology in the input modules (interface between turbine input and main rotor gearbox.
I'll jump off this thread regarding rotaries because it is deviating from the topic of mercury's turbo and we can go back and forth at infinitum. My hunch is we will see it whether it is me or someone else doing it.
I had these same discussions when I was told it wouldn't work for a jetski, completely different platform.
Yes, we do have bevel gears operating at 22k rpms. All of our gearboxes use the same methodology in the input modules (interface between turbine input and main rotor gearbox.
I'll jump off this thread regarding rotaries because it is deviating from the topic of mercury's turbo and we can go back and forth at infinitum. My hunch is we will see it whether it is me or someone else doing it.
I had these same discussions when I was told it wouldn't work for a jetski, completely different platform.
02-22-2010, 08:09 AM
#270
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saxman, have you tried Gates Kevlar belt. Those have a Teflon coating, but must use their special pulleys since the cog teeth have more of a geartooth profile...not straight cut.
