P & P FAQ
P & P FAQ |
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Which way should a dyno drive shaft be aligned?
The same way, flat, like car driveshafts and Jaguarand Corvette half-shafts.
(MLF, 2/20/96)
Who balances and rebuilds dynos?
EMS
(MLF, 2/20/96)
How do you get rid of the "all-floor" vibration on the south dyno?
Don't tighten the pins too tight. Bottoming them in the holes is enough. Don't lift the wheels off the rail.
(MLF, IAK, DJH, VP, & EMS inc.,
2/22/96)
Who balances and rebuilds SIMPLE dyno driveshafts?
Cert. Powertrain Specialists, a/k/a Clutch and U-JointBut don't tell them you're from ME, rather tell themyou're from the St.Paul Maintenance if U of M (agrad student p'ed them off once)
(MLF, 12/1/96)
Who balances and rebuilds RUBBER ELEMENT dynodriveshafts?
North American Engineering in MPLS but service is very slowDirect from Spicer is probably faster (and cheaper)
(MLF & BRG, 12/5/96)
Who knows how to calculate resonance frequencies of driveshafts (or at least has a spreadsheet that can do the thinking for them)?
MLF and BRG
(BRG, 12/2/96)
Who is familiar with the South Dyno?
MLF, BKOP, IAK, VP, BRG, PWS
Who is familiar with the North Dyno?
YC, BKOP, IAK, VP, HCS
How do I check the load cell calibration on the south dyno?
First, (with dyno off) zero the display on the dynocontroller by pressing the "auto-zero" button. Next,press and hold the "SHUNT CAL" button until the torque reading stops changing; remember the final torque value. Press and hold the "SHUNT CAL" button again. The final value of torque this time should be opposite in sign,but equal in magnitude (to within a couple of percent) to the previous value.
(BRG, 11/25/96)
200 HP Dynamometer notes – 2/15/2000
This dyno is hooked in parallel with the 300 HP dyno to the load bank on the back wall of the lab. Only one can be connected at a time and the connection is "manual", the cables need to be unbolted and the other set bolted on.
The 200 HP dyno is capable of motoring but no automatic control is available. The dyno controller needs to be set in the manual mode, NOT speed or torque mode. The control knobs then control field current, most likely is percent of full scale. This may be called field control mode. The other control can then vary load to get proper speed.
Set the field to get full field and then energize the armature current to motor the engine. Adjust the field and armature currents to control speed.
NO AUTOMATIC CONTROL IS AVAILABLE in the motoring mode.
These comments are based on a conversation with Huel Scherer.
Who makes good load cells for dynos?
Transducer Techniques, Temecula California.
(BRG, 11/25/96)
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