Ahhhh... well you already have a big capacator....
Its called the battery... it probably is the biggest one on the plane... but, how to soften the blow.. from the gear pump... well hmmmmmm I would say give it more time between cycles... however that wouldn't really be quite practicle...
However... the two alternators are preforming.. if they are putting out... but, rather its the gear pump motor that is dragging more current out of them causing them to have to respond with more output in current... I would check the gear pump motor for a higher than normal current pull... you may find your problem their...
As to the rest the cont engine drive coupler is probably the best one around... if installed correctly... the rubber dampners in the cup will usually take any surge pulses in power out a little.. after all they are miniture version of the mag couplers... and they snap along at anything below 800 rpm... so the alternator is just a scaled down version of that...
It would be hard to say if your alternator drive shaft is bad or not out of the box... most are not made anymore... so we only have the ones that were made by ford or autolight...
another thing I would do is go look closely at the oil pump drive gear... with a good inspection mirror... and see how those gears are doing too... if the cam bearing in the back is out of limits.. you will see that gear also wearing funny... actually it only runs on half a tooth... smile... leaving only about 1/8 inch to drive the oil pump... but, we have seen that for years... it is the meshing of the gears that you want to check... and to do that if you can't see the wear pattern is to take some persion blue.. grease or some other indicator.. and coat the gear... then pull the engine thru a couple of times and you can see the wear pattern as the bluing will be gone where the gears make contact... and if the gears are not seating correctly.. on the high side.. miminal tooth contact.. then you need to find out why the cam gear is not runing right or the accessory case is not aligned right... as the oil pump and alternator both are relieing ont the alignment of the accessory case to keep the gears in mesh...
We have seen accessory cases repaired that did not meet the alignment specs... and thus had to replace them with others... this could be your problem too... so do the gear check and see... then get back to us... with the report...
GMAs
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