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  #106  
Old 10-01-2010, 06:43 PM
oab_au oab_au is offline
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Re: Building an engine dyno.

A great building block. I used them on an automatic spring winding machine that I built in the early 70s. 555s in a chain to form a controller to time and drive it. A pair of 555 to make a PWM to drive the wire spacing ram. One to set the frequency triggering the other to set the pulse width.
Way to go.

Harvey.
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  #107  
Old 10-07-2010, 10:45 AM
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Dessertrunner Dessertrunner is offline
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Re: Building an engine dyno.

Lars any luck with the circut design?
Tony
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1995 - SVX 700,000 K Mine, DMS Struts to lift car 2in. Tyres Wrangler Silent Armor 235/70R16, PBR Radiator. 6 speed with DCCD and R180 rer diff, Heavy duty top strut mounts front and rear. Speedo correction box fitted. New stero (gave up on the old one). Back seat removed and 2 spare tyres fitted for desert driving. ECUTune SC sitting in the box for the next SVX.
1992 - SVX 255 K Wife (Want to stay Married so not allowed to fit SC)
1992 - SVX Pearl with black roof race car roll cauge etc ready to race. Ex Tasman Targa car.
1995 - SVX Green low k mint condiation.
1995 - SVX Rally car, ex Matts car. Now to be used on track.
1992 - SVX red & Black being converted to Mid Engine.
1995 - SVX Red 143,000 bit rough.
Owned 5 others Subaru back to a 1974 1400 GSR.
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  #108  
Old 10-07-2010, 12:07 PM
lazer lazer is offline
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Re: Building an engine dyno.

Yeah I just have to find a suitable IGBT transitor
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  #109  
Old 10-07-2010, 07:53 PM
amber amber is offline
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Re: Building an engine dyno.

Quote:
Originally Posted by Dessertrunner View Post
Lars any luck with the circut design?
Tony
Just had Trevor on the phone and he says go here for the basics to work with.

http://www.dprg.org/tutorials/2005-11a/index.html
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  #110  
Old 10-21-2010, 05:44 AM
lazer lazer is offline
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Re: Building an engine dyno.

That part is easy. What he have to find is a IGBT which is big enaugh to handle all that current.
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  #111  
Old 10-23-2010, 02:02 PM
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Dessertrunner Dessertrunner is offline
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Re: Building an engine dyno.

Hi Lazer,
Pretty sure you understand but will mention it the retarder is 3 times larger then needed so I don't need to operate all the coils on the retarder.
Also I have 2 transformer 1 that out puts 12V DC and one that out puts 24V DC the input for them is 240VAC.
Hope that helps.
Have a great day.
Tony
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1995 - SVX 700,000 K Mine, DMS Struts to lift car 2in. Tyres Wrangler Silent Armor 235/70R16, PBR Radiator. 6 speed with DCCD and R180 rer diff, Heavy duty top strut mounts front and rear. Speedo correction box fitted. New stero (gave up on the old one). Back seat removed and 2 spare tyres fitted for desert driving. ECUTune SC sitting in the box for the next SVX.
1992 - SVX 255 K Wife (Want to stay Married so not allowed to fit SC)
1992 - SVX Pearl with black roof race car roll cauge etc ready to race. Ex Tasman Targa car.
1995 - SVX Green low k mint condiation.
1995 - SVX Rally car, ex Matts car. Now to be used on track.
1992 - SVX red & Black being converted to Mid Engine.
1995 - SVX Red 143,000 bit rough.
Owned 5 others Subaru back to a 1974 1400 GSR.
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