I don't want to sound critical or know it all, but I am an engineer for 40 years and I think you are getting major bs from the rep. maybe not willful, just ignorance or he is reading the script. Or, the CSR may be used to dealing with people who never operate power equipment and think anything that makes more noise or vibration than their refridgerator is a problem. He may not realize that you seem to be pretty mechanically minded and if you think there is an issue it may be more serous than he envisions. Just trying to give him the benefit of doubt anyway.
-Is the pump mounted with a rigid ball housing direct to the motor? then 'too much torque' is bs, as the only torque reaction is through the rigid bellhousing between the two. The unit should then float in space with NO reaction from too much torque.
-Rigid mounting anchors the engine more solidly, but what he is describing on why they don't use AV mounts is also bs I think. Mainly it is not done for cost reasons, because the vibration levels are tolerable in the design without AV. This one apparently is not. So the issue isn't lack of AV, but excessive vibration.
-single cylinder engines are inherently imbalanced either up and down or front to rear. Balancing the crank or piston just moves it from one plane to the other, unless some sourt of counterbalance weight is added. So are you expecting too much? That you have used other machines tells me not, that your read of too much vibration is accurate.
-"don't run it full rpm"..... it should perform at its maximum design potential or send it back. I would not buy a new truck only to be told 'don't drive it over 45 mph then it won't vibrate so much.......' I'd want the front end fixed or a new truck.
-My suggestion of the grainger mounts was as an improvement to an already working good design, not intended as a band aid for a mfr screw up. I would not start any rubber mounts or testing until the unit is shown to be oeprating correctly. AV mounts should take out the last 20% of the vibrations, not attempt to take out the first 50%
I'd get it back to the service center. Then have them isolate the coupling and run the engine alone, but with pump and adaptor still in place. It could be a bent engine crank, bad bell housing that misaligns pump and engine shafts, bent pump shaft, or high rpm as suggested.
You are spending good money, you have a right to a serviceable product. You can't expect a TW6 for $1500, but you should get a good machine. You should not be getting problems right out of the box. problems only get more expensive to fix.
May be a minor problem, but it really bugs me to have a CSR blow off customer concerns so they go off in defeat and keep using the bad product. so maybe I am overly biased with snap negative judgment here......
kcj
