water brake dyno....

[Cement Legs]

For teams using older water brake dynos what are you doing for cooling on the engine?

[Cement Legs]

For teams using older water brake dynos what are you doing for cooling on the engine?

[Sarsippius]

Using the radiator mounted near by,

[Cement Legs]

Forgot about this post...

I guess what I meant was do any other teams find other ways to cool the engine considering that airflow through the radiator is going to be minimal as it sits still on the dyno compared to moving along at 100+ mph on a track under the same load?

[Sam Zimmerman]

You guys go 100 mph? http://fsae.com/groupee_common/emoticons/icon_wink.gif

Big radiator, big fan. The fan is ran off of a big battery, not the engine's electrical system.

[Dan Deussen @ Weber Motor]

Just take and aluminum radiator and weld an aluminum box around it that you can run tap water through. It's now essentially a water to water heat exchanger. Another big advantage of this setup is that the hot water can be easily drained and will not put more heat in the dyno cell air like a fan on a radiator would.

Let me know, if you have any more questions.

[Agent4573]

We use a radiator that would effectively cool a big block. It's prolly about 30 inches wide and 15-20 inches tall, running twin 8 or 9 inch fans. It's large, but its mounted on the dyno stand so its not really a hassle.

[B Lewis @ PE Engine Management]

We do someting similar with our small stand. Use a radiator from a diesel truck to cool the coolant with an electric fan. We have also used column type "water to water" type exchangers. This works great as well, but is more pricey to build.

[Matthew Robinson]

truck radiator truck fan
works just fine

[kozak]

i have ome questions about water breaks. We have one sitting in our shop and it is not in use or opperable i believe. what do i need to get it running, as far as computer hookups and dyno programs.

[Cement Legs]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Sam Zimmerman:
You guys go 100 mph? http://fsae.com/groupee_common/emoticons/icon_wink.gif

Big radiator, big fan. The fan is ran off of a big battery, not the engine's electrical system. </div></BLOCKQUOTE>

Yeah maybe even 200 MPH but that would be the speed of the motorcylcle fan on the motorcycle....

We are looking into just running a water line through the system and draining the hot water at the bottom. Thanks Dan that confirms what our engine guy has looked into and begun to setup.

[Dan Deussen @ Weber Motor]

Here is a pic of the box I was talking about. The radiator is welded into the box diagionlly to get good cross flow. The tap water is fed throught the bottom inlet and drained through the top outlet so there is a constant water level in the box. It usually takes up to 3 gal/min to cool the engine even under steady state full load.

http://cs.svsu.edu/~dsdeusse/dyno1.JPG

[drivetrainUW-Platt]

what are the sensors comming out of the headers near the block, EGT?

[Dan Deussen @ Weber Motor]

EGT's (the 90 degree bent thin pieces) on the bottom and wideband lambda sensors on the top.

[kozak]

ok i just thought of this and mayne i'm stupid but how do you run the engine because of the integrated transmission adn the shifting and such. or is the turning of the water break not enough to drag down the engine during starting? also do you have to shift?

[GTmule]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by kozak:
ok i just thought of this and mayne i'm stupid but how do you run the engine because of the integrated transmission adn the shifting and such. or is the turning of the water break not enough to drag down the engine during starting? also do you have to shift? </div></BLOCKQUOTE>

Use the clutch to start....

find whichever gear is 1:1, stay in it

[kozak]

so it take a little of finessing?