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Which means "Evil Twin". Lets see your projects where you change boring into fun or create the fun from scratch.
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 Post subject: Re: Dyno
PostPosted: Thu Jul 25, 2019 7:52 am 
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Going to pick up the dyno tonight it looks like.

Here's a funny story. The 400i engine is from an automatic trans car. Ferrari used a GM trans so bolted to my engine was a trans adapter setup. I listed that stuff on ebay then through it out when it didn't sell. now I have no way to bolt a bellhousing that the dyno needs to the engine without tracking one down or making one

Doh!


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 Post subject: Re: Dyno
PostPosted: Thu Jul 25, 2019 8:27 pm 
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Mine!


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 Post subject: Re: Dyno
PostPosted: Sun Jul 28, 2019 8:39 am 
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I'm thinking this is the water pump
https://www.northerntool.com/shop/tools ... _200418132

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and this the water tank


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 Post subject: Re: Dyno
PostPosted: Sun Jul 28, 2019 8:57 am 
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Right now I'm trying to figure out a new flow valve. The Dyno has a 1" valve and dyno connection fitting which is the same s the lower hp single rotor unit but then the 2 rotor has two 1" drains instead of 1 so the feed can't possibly keep up without flow restrictors in the outputs, which it has. I think is why the unit doesn't produce double the single rotor hp even though it uses 2 rotors identical to what;s in the 1 rotor unit.


So I need to find or make a 1.5" servo operated flow valve and remachine the dyno for a 1.5" fitting...or maybe add 2 more 3/4" or 1? fittings.....need to look at it a bit, but it needs more water flow to be happy with my engine. go-power and dynomite have valves in the $1000-$2000 range but I'd really like to find or make something in the $200 range that my budget will allow.

I also learned that the new units are rates at 6krpm with greased bearings and 10k with an oil feed bearing upgrade. My manual say 7500 continuous or 10k intermittent. I talked to teh tech and basically the bearings over heat so limited duty cycle above 6000 or so.....I think I can live with that and won't bother with trying to upgrade the bearing lube system.


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 Post subject: Re: Dyno
PostPosted: Sun Jul 28, 2019 4:49 pm 
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A couple correction.

The water connections on the dyno are for 3/4" hose. The valve is 1" and so are the fittings on it...but the fitting at the dyno is only 3/4" so that's a little odd. The one rotor has a feed port in the back plate which is plugged on the 2 rotor so I could use that if I can figure out a matching feed on the front...where the mounting and load measure stuff all lives.

The valve is just a 1" globe valve that looks like they spring load open and have a hydraulic hose connected to the drives it shut have you screw the handle in on the control panel...pretty simple.


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 Post subject: Re: Dyno
PostPosted: Mon Jul 29, 2019 12:41 pm 
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Bought a couple things to play with.  The valve should have plenty of flow and the ECU should be able to drive this stepper....hopefully its fast enough and powerful enough to operate the valve properly.  Hopefully I get it on my first try and have a working load valve for about $100


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valve Capture.JPG
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 Post subject: Re: Dyno
PostPosted: Mon Jul 29, 2019 4:51 pm 
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I called and got the pump curve for the northern pump...looks about perfect. 60psi is about 140ft and 6000gpm is the point of interest and it looks like the pump delivers closer to 7000 so that should mean it can hold 60psi and handle flow for engine cooling too I think. Nice.


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 Post subject: Re: Dyno
PostPosted: Tue Jul 30, 2019 7:41 am 
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I would really like to built something like this dynomite unit ($10250 as shown, with 800hp brank (maybe 1000)manual control valve and a data logging setup. ). I'm just not sure I want to have to store something that big. Maybe If I can also make a top fot it so its a shop bench most of the time? My other thought is that I have a pretty serious welding/fab table I built and it would be pretty easy to just bolt an engine stand to the top of it and call it done, that's probably what I'll do...but the dynamite setup sure looks nice......


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 Post subject: Re: Dyno
PostPosted: Tue Jul 30, 2019 8:28 am 
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I thought I'd pull up the drawing for the clutch shaft and see if the dyno guys have a match.....I have no idea where I saved it. I have screen shots of a modeled part so I know I modeled it but not file, no drawing for any of the trans parts I did......next is see if there's a hard copy in the 6 or 10" tall stack of parts related to the project. :oops:


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 Post subject: Re: Dyno
PostPosted: Tue Jul 30, 2019 3:57 pm 
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I am honestly not loving how the stepper control function works in enginelab. It doesn't have an aceel/decel ramp the best I can tell which will severely limit the max speed I can run. I reached out to request an added input for this functionality.


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