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Made by Monkeys

Loose Screw Sends Power Wagon Racing

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OLD_CURMUDGEON
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Platinum
Re: Interlock or Safety?
OLD_CURMUDGEON   7/26/2012 8:59:33 AM
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LSSMASTER:

While I truly appreciate your efforts on consumers' behalfs by instilling in your students the problems of poor and/or ineffective design, I'm convinced that your efforts will for the most part will go unapplied. 

When these students become wage earners, they'll be required to answer to a "higher" authority, that being the "bean counters" of their employer.  So, while all your "preaching" may have instilled in them a personal ethical (moral) code, it will undoubtedly only be exercised in earnest on their own property when they're mowing their lawns, painting their houses, running a new circuit for a recently acquired appliance, etal.  In other words, their own personal work will be done precisely and with due diligence in respect of local codes & sound engineering.

As an optimist, I HOPE for the best in design; as a realist, I know the results will be influenced otherwise!

Rob Spiegel
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Blogger
Re: interlock or safety ?
Rob Spiegel   7/26/2012 11:36:22 AM
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Send more if you think of any. Also, we're always on the look out for Sherlock Ohms submissions. If you have worked your way through a tricky engineering problem, we'd love to hear about it.

Cadman-LT
User Rank
Platinum
5 cents
Cadman-LT   8/2/2012 4:55:19 PM
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Yeah, they could have done it any of the ways you mentioned and it would have been safe, but I bet they saved 5 cents by doing it dangerously. That's how cheap everything has become. Save 5 cents even if it's unsafe. Makes no sense, just one huge lawsuit ruins that profit margin.

TRCSr
User Rank
Silver
DR Equipment - Good and bad
TRCSr   8/9/2012 11:31:53 PM
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I have had a DR tow--behind mower for several years. For the most part it has some clever design features; like a triangular piece in front of each wheel so that if you get too clse to a tree or post it will not take off the wheel. It also has the ability to offset the mower from the tow machine so that you can mow to the side of the track of the tow vehicle. However, I had a problem after a few years that it all of a sudden started leaving an unmowed strip behind it. I called customer service and even sent them some pictures of an area that I had just mowed to show them exactly what I was talking about. They had no idea of what could be causing the problem and made a few suggestions which had no affect when I tried them. It was that way until just recently when I noticed that the blades were not attached correctly. After correcting that it has worked much better, but does not cut evenly in heavy brush. Certainly like they show in the TV ads. Another problem that I had was with the operation of the throttle. After several years the only way it would run was with the throtle in the choke position. Again, I contacted Customer Service and they were of no help. Also, again, I sent them pictures to fully describe the situation. The few suggestions that they made were not only of no use, but really did not address the situation. Finally I took it to a local repair shop (who normally will not aork on DR equipment, but did for me as I am a steady customer). After him having many more discussions with DR and not getting any useful information, he finally solved the problem by adapting a part from another model Briggs and Stratton engine to this engine, like it should have been in the first place.

 

One feature that I feel is poor design is that the hitch only allows movement in the horizontal plane, but not in the verticle plane. This is fine if all you mow is fflat land, but can cause problems if mowing on uneven ground. I would think that a standard ball hitch would be adequate, or some other design that allowed free movement in both directions.

 

I know this is not all exactly "Made by Monkeys", but it certainly "Sold and Serviced by Monkeys". Other than these, and a few other minor problems, the unit is well designed and, so far, is very rugged and reliable. Just a few corrections to their design and this would be almost a perfect mower.

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