Need for Dyno Test

[Zrun]

How much effort is there to do an engine dyno?

 

Need to extract the whole engine and run it on a machine? Or take off transmission?

[Yeobh]

Yes, you have to separate the engine from the transmission. The engine is mounted on the test bed and coupled to the dyno via a drive shaft. Engine HP is measured at flyhweel and therefore is 30% more in output than HP measured at the wheels using chasis dyno

Edited June 25, 2004 by Yeobh

[Yeobh]

To speed up learning on auto techolongy and car modifications it is best you start from the basic. Without understanding the basic principle of auto techolongy, it is very difficult to engage in life long learning.

[Kytl68]

Cool explanation .... good job !!!

 

I am looking at the chasis dyno as out intention is to test the improvement of the car's power and torque with aftermarket products.

[Kytl68]

Speedworks @ JB

 

http://www.speedworks.com.my/dyno.html

 

Jus in case ....

 

Driving along the main road towards Sentosa from JB custom, take note of the sign boards that says "Pasir Gudang". its the same direction that will lead you to JB Carrefour. Before reaching Carrefour you have to take note of a sign on ur left that points to Carrefour's carpark (for the whole journey, keep left juz in case you miss it). When u see this sign, immediately change lane to the right most lane, u'll reach a traffic junction. From here you turn right (take note there's also a orange signboard that says Pasir Gudang), after completing the turn keep to ur left. Keep driving until u reach a left filter lane, turn left and after completeing the turn look to ur left. You'll see a big signboard that says "Speedworks".

Thanks ... don't think I will be lost if I get there ... you are super detail man !!!!

[Phochem]

No prob bro.... !!!

[Andrewkb]

Is it at the junction where you turn right towards Giant (just before Pasir Gudang highway) and a lot of car displayed along that road ?

[Phochem]

Yeah bro, aft that stretch of cars there will be a filter lane to left. aft complteing the turn look on the left u'll see the workshop liao.

 

btw i'll be gg there in the weekday to service my hotbits coilovers, maybe u might want to join me.

[Andrewkb]

Need to work leh :-(

[Phochem]

ok lah.

[Hattee]

Comes to think of it, what's the potential of using on-board dyno. Somehow, on-board dyno has been missed out by most Singaporeans who spend alot on performance add-ons and changes. At best they pay a premium for a couple of stationary dyno runs and tuning and assume everything remain the same with time.

 

In my search for the popular G-Tech Pro and its alternative, happened to bang into several interesting dynos.

 

1. Race-Technology AP22 or AC22 at http://www.race-technology.com/WebPage2/Pr...2/AP22Home.html Uses 2-axis accelerometer and option of GPS but no measure of torque.

 

2. Nology G-Dyno and G-Dyno Plus uses multi-axis accelerometer (even GPS), "user supplies the car's weight, gear ratios, tire sizes and some other variables, the rest is pure physics." Can include a inductor clamp to ignition but no mention how the rpm is used. Even can accept inputs from OBD. Details at http://www.nology.com/gdynom.html and comparison at http://www.roadtune.co.uk/index.shtml

 

3. Road Dyno uses just an inductor clamp to sense rpm from ignition cable. "User must supply the car's weight, gear ratios, tyre sizes, and some other variables, but the rest is pure physics." More details at http://www.charm.net/~mchaney/homedyno/dynokit.htm

 

4. Mr Dyno uses 2-axis accelerometer and user's info to compute power and torque. User can input specific rpm-vs-mph. More details at http://www.mrdyno.com/MRDInfoFunctionalInfo.htm Also some comments at http://www.zhaust.com/tech/0404/mrdyno/

 

Any one has comments if these on-board dynos are useful, particularly with their sophistications in PC-based analyses, display and printout?

Edited July 24, 2004 by Hattee