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JulianEdgar 09-25-2020 02:26 AM

My home dyno
 
Bringing it home. Eddy current dyno, but sold without any control gear.

https://i.postimg.cc/3rBMS9gp/Pic-1.jpg

Getting it into the home workshop, very heavy.

https://i.postimg.cc/8kBD8TV7/Pic-2.jpg

New dyno power supply - 0-190V DC. Designed and built from scratch.

https://i.postimg.cc/zvp9yXJp/Pic-3.jpg

Testing the dyno speed sensor that is to work with the YourDyno hardware/software that I bought.

https://i.postimg.cc/ZqdtwScK/Pic-4.jpg

Nice speed sensor signal!

https://i.postimg.cc/gkSCdJt2/Pic-5.jpg

Remote control for dyno fans - allows switching from inside the car.

https://i.postimg.cc/XYX0yFB5/Pic-6.jpg

Insight on the dyno. Turbo, water/air intercooler, Motec management.

https://i.postimg.cc/yYYMw9PG/Pic-7.jpg

Rear tie-downs.

https://i.postimg.cc/15vQtMXP/Pic-8.jpg

Laptop and LCD screen.

https://i.postimg.cc/x1BBJZ2r/Pic-9.jpg

Example power runs.

https://i.postimg.cc/bv78PJJt/Pic-10.png

M_a_t_t 09-25-2020 02:37 AM

If you don't mind sharing, roughly how much total cost?

JulianEdgar 09-25-2020 02:56 AM

Quote:

Originally Posted by M_a_t_t (Post 631861)
If you don't mind sharing, roughly how much total cost?

Nah, I don't have any secrets. In US$, about:

- $3000 for the dyno

- $800 plus postage for YourDyno

- $250 for the DC power supply parts (I see that YourDyno now sell one for $500, which is a bit high but not ridiculous)

- maybe $1500 for fans, cabinet, monitor, heavy duty tie-downs, misc

So around US$5,550. I remember it as about AUD$8,000, so that is about right.

They key is to keep watching for eddy current dynos for sale, and wait. I watched for many years before I found one I just couldn't go past (and it was only 160km - 100 miles - away).

freebeard 09-25-2020 04:21 AM

Do you have plans for a return on the investment or is it just something to have?

JulianEdgar 09-25-2020 04:34 AM

Quote:

Originally Posted by freebeard (Post 631873)
Do you have plans for a return on the investment or is it just something to have?

I know nothing about tax law in the US but in Australia, if you earn money from pursuing the area, everything you spend is tax deductible. That makes it a good investment for me, no matter how much I use it!

(And I sold an article on the electronics of the dyno to a UK magazine, and I have a commission from a publisher to write a book on home dynos when I want to.)

I guess I could hire the dyno out, but over the long term, it's worth it to me as it is.


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