Model Specific
Frequently Asked Questions-


Q:  I have an older model of Go-Power Systems dynamometer.  I think it may be a DY type dyno.  Can I still get replacement parts?

A:  The DY dynamometer series was replaced by the D-100 model small engine dynamometer and, although there are many DY series dynamometers still being used today for testing, there are no spare parts manufactured by Go Power Systems for these models.  However, if a problem exists with the load cell assembly, you can purchase a current hydraulic load cell assembly and retrofit it to your brake or retrofit an electronic stain gauge assembly to the torque arm.




Q:  I have a DA type dynamometer (300/500, 302/502, 312/512,316/516).  Can I get replacement parts for these types of dynamometer?

A:  In some instances, yes.  Most of these units are serviceable by Go Power Systems and many parts are still manufactured for the support of these models.  Earlier models have some parts that cannot be replaced, such as the shaft/ rotor assembly or stators due to the fact that they have not being in production for many years now.  Evaluation of the internal wear will dictate if your brake can be serviced.  In order to obtain assistance, the first step is to accurately identify your model.



The D-300/500 & 302/502 is easily identified by its input shaft being splined for a clutch disc interface method.  This model does not have a removable input shaft, rather, the shaft rotor assembly itself has a splined interfacing end.  Many of these models were manufactured with a GM or VW matching splined shaft.



The D-312/512 can be identified by checking the connection method of the removable hub adapter at the input end.  If you purchased the dynamometer and it came with an splined input shaft adapter mounted on it, removed the mounting bolts and take a look at the end of the shaft/input shaft hub assembly.  If the main shaft has short male splines, the shaft hub assembly has corresponding female splines, and a c-clip retainer is present, you have a model D-312/512.



The D-316/516 is virtually the same as the D-312/512, but employed a smooth bore hub adapter that is keyed onto the main shaft.



All of the above models are single trunnion units with alloyed aluminum construction and there are some spare parts still in production.  If you have any questions, your Go Power Systems Sales Representative will be happy to assist you in the process.



Q:  Can I get an Instruction Manual for these older models?


A:  Yes.  Please contact Go-Power Systems for the latest installation, operation, service and repair manuals for all of our equipment.





Q:  Can the D-100 be mounted to test engines with vertical output shafts?

A:  Yes!  The D-100’s side plate design allows the operator to set up for horizontal and vertical output shaft engine testing simply by removing the eight (8) mounting bolts and rotating the absorption unit in its stand, then securing it in the desired orientation and reinstalling the mounting bolts.





Q:  My D-100 dynamometer did not come with a coupling to interface with my engine.  What kind of coupling do I need and where can I get one?  Can a driveshaft setup be employed?

A:  The D-100 utilizes a flexible coupling, most commonly a ‘Love-Joy’ or equivalent flexible coupling to attenuate vibrations associated with engine output that would otherwise translate into the dynamometer and cause damage.  Go-Power Systems can supply an interface coupling if the customer specifies the engine output shaft dimensional data.  However, due to the variety of couplings used and engines that can be tested using the D-100 model, there is no ‘standard’ coupling utilized for all applications.



A driveshaft can be used for setups that require additional clearance, but it is recommended that if this method of testing is employed the driveshaft should be supported with bearings after alignment takes place and the driveshaft MUST be torsionally compliant and, for safety purposes, a driveshaft guard MUST be employed.

Cooling Towers
Data Acquisition