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Post by racket on Mar 28, 2014 16:03:36 GMT -5
Hi Chris
LOL.......you know more about converters than me, I know nuthun' :-(
Can you see any way of having this sorta setup work , we already need fairly large lube systems for our "turbo bearings" , could that lube be used in the converter ??
How do the converters mount themselves bearing wise , would there be any difficulties??
Years ago I was talking with someone about this idea and they said one of the Ford converters might have been a candidate for this sort of "abuse", its simplified lube flow system could have been adapted .
The converter wouldn't suffer the same heat buildup problems as a centrif clutch arrangement as the lube flow would carry away the heat to the HX .
Your thoughts would be much appreciated :-)
Cheers John
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Post by Keith LeBlanc on Mar 31, 2014 15:09:57 GMT -5
Just got thru reading this one from page 1, WOW!! What a fantastic build! Really looking forward to track runs. It should be awesome. Best of luck to you guys. Following keenly.
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Post by Deleted on Apr 6, 2014 13:39:04 GMT -5
With changes made to system that caused problem at Santa pod time for some more testing
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Post by Johansson on Apr 6, 2014 14:59:51 GMT -5
Good job! I sort of expected a burnout at the middle of the video but that isnĀ“t exactly proper protocol for the first rolling test I guess.
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Post by Deleted on Apr 6, 2014 15:08:36 GMT -5
LoL...... my legs burning more of a worry :-) did get a little warm, but nothing to much to worry about when I have my leathers on. Only still running at just a little under 10 psi, more testing to do, but looking good
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Post by turbochris on Apr 6, 2014 15:34:04 GMT -5
I'd just rip the converter, stator support which is fixed solid and input shaft from a small automatic. Believe it or not converters want to empty themselves out the center, through the hub that supports the output side of the body and usually drives the pump. You would think the fluid wants to go to the outside but the impeller pushes the fluid into the turbine and some goes behind the turbine and the only place to go is out the hub. There's enough force to cavitate the converter at high rpm with the empty space being a vacuum. They put a certain amount of pressure on the charge line and keep the fluid in the converter w a charge valve or restrictor on the return line. If you stop feeding oil, it will empty itself.
The oil flows in a vortex aka vortex flow in the torque multiplication phase and the stator has a shitload of torque on it as the oil coming through from the center/outlet of the turbine is going the wrong way, it needs to be redirected into the center/inlet of the impeller in a direction that keep it fed but not have to make the impeller work real hard accelerating the otherwise misdirected fluid.
As the turbine speeds up, at about 80-90% of impeller speed, the stator has less and less work to do and will begin to spin itself as it's on a sprag. This is basically emulating a simple fluid coupler and is referred to rotary flow. There is no torgue multiplication with rotary flow. very high horsepower applications will break the sprag, some will use a solid mounted stator aka spragless converter but it hurts you on the top end. Newer ratchet style sprags seem to hold up really well and spragless is less popular.
The way it works is you close/reduce the feed and the converter will partially/fully empty itself, then stage the car. Then launch with a certain amount of fluid, enough to keep the motor RPM where you want it, then put the fluid back in in a controlled manner. High flashpoint oil is very important. People have used cooking oil. the turbo cars are pretty brutal in this regard as they need to sit on the converter, and make heat to get the boost up.
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Post by Deleted on Apr 6, 2014 15:56:37 GMT -5
Hi Chris.... sounds very interesting , but for now I want to see how this works, adding or changing bits until we see how it works would I think be at this time. money and time I don't have
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Post by racket on Apr 6, 2014 19:34:31 GMT -5
Hi Andy
Good to see her moving under power :-)
Cheers John
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Post by turbochris on Apr 6, 2014 21:39:35 GMT -5
ha ha Andy I was answering Johns question.
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Post by Keith LeBlanc on Apr 7, 2014 13:28:10 GMT -5
I'm a little concerned with that extremely stretched out rider position, upper body/arms, I mean. A little bend at the elbows is a good thing in the lay-down riding position.
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Post by Deleted on Apr 12, 2014 14:58:29 GMT -5
ready for testing again tomorrow , a few changes and bits added
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Post by Johansson on Apr 13, 2014 2:39:17 GMT -5
Good luck!
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Post by Deleted on Apr 13, 2014 12:10:10 GMT -5
some more testing , learning more all the time
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Post by Deleted on May 4, 2014 15:47:48 GMT -5
Hi Guys :-( well all I can say is.... the bike at the moment seems to like ,mainly its oil on the floor rather than in the oil tank.....
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Post by Johansson on May 4, 2014 23:05:31 GMT -5
Bugger!
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