My home dyno

[JulianEdgar]

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



Getting it into the home workshop, very heavy.



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



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



Nice speed sensor signal!



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



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



Rear tie-downs.



Laptop and LCD screen.



Example power runs.

[M_a_t_t]

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

[JulianEdgar]

Originally Posted by M_a_t_t

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]

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

[JulianEdgar]

Originally Posted by freebeard

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.