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Help needed to get Hofmann Dynatest 112 working

(@performancenw)
Member

We moved units and moved our Dynatest 112 to the new unit.

We reconnected it and it now does not give us a torque figure. the speed and rpm seem ok but the bhp is very high.

Not sure if this is ok to put on here, but we carnt afford to buy new units yet, but in a mess now and no idea who to ask :-<

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Topic starter Posted : 01/01/2022 4:19 pm
(@radics1)
Member

Hi, i have a dynatest 112 too, but i dont understand what is your issue currently. Do you measure in braked or inertial mode? 

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Posted : 01/01/2022 5:17 pm
(@performancenw)
Member

@radics1 well it has only 1 speed sensor so when we moved the speed sensor label fell off. but i know it had a bridge wire.

I have tried it in both modes and when you get the  box chart where when you turn it on they go to 0. they all do except the torque figure.

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Topic starter Posted : 01/01/2022 5:21 pm
(@performancenw)
Member

i have tried it in both static and dyno mode. the box with the 4 items rpm, mph, torque and bhp move except the torque figure.

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Topic starter Posted : 01/01/2022 5:34 pm
(@performancenw)
Member

@radics1 are you getting my messages ???

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Topic starter Posted : 01/01/2022 5:36 pm
(@radics1)
Member

@performancenw yes,i just read them

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Posted : 01/01/2022 6:06 pm
(@radics1)
Member

Now i am really confused. First you wrote speed and rpm are ok but BHP is high,then on the next post you dont have rpm,only torque. What rpm sensor do you use?

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Posted : 01/01/2022 6:14 pm
(@performancenw)
Member

@radics1 It has a silver speed sensor on the right hand front roller.

On the 4 boxes that show Revs, MPH, BHP, Torque.

All the 3 (rev, bhp, mph) work but the torque figure is not moving just staying at a static figure.

The bhp when finished a run is just silly high or maybe even just a default figure.

 

We put a 150bhp car on the dyno and it showed 348bhp.

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Topic starter Posted : 01/01/2022 6:39 pm
(@radics1)
Member

@performancenw You might need to calibrate the load cell again. In the setup window you should see nearly 0 kg load when stationary.

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Posted : 01/01/2022 6:47 pm
(@performancenw)
Member

which is the setup window ? the 4 boxes ???

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Topic starter Posted : 01/01/2022 7:23 pm
(@radics1)
Member

Here:

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Posted : 01/01/2022 8:19 pm
(@performancenw)
Member

@radics1 i havent seen that screen before. is it from the items purchased on here? if so i dont have.

All i have is the blue unit with the dials on which i assume is original

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Topic starter Posted : 01/01/2022 9:10 pm
(@radics1)
Member

I wonder if it still works. Does is run under DOS? 😀 I think its worth the upgrade to have a modern controller like Yourdyno. You can use the stock power supply,but you need a pwm to analog converter,to have 0-10V analog input signal.

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Posted : 01/01/2022 9:17 pm
(@performancenw)
Member

it worked perfect 2 days before the move 

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Topic starter Posted : 01/01/2022 9:25 pm
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