ez2bgman
Elite Veteran
Location: N'awlins, LA
| I have had the same issue. I am on my 3rd sensor. The 1st 2 sensors worked perfectly on the bench and prior to flying. I put a tune up flight on my heli and then went to plug in the sensor and power into the Carbsmart and I got no reading from the "sensor ok" light. I followed all the advice here on RR when installing and they still cr@pped out on me. The 3rd sensor is finally working after 4 flights, but I am a bit skeptical about it's longevity.
Here are a couple of responses from CSM after I explained everything in detail:
| Quote |
| Wed, 26 Mar 2008
Dear Gary,
All we can suggest is to send you one of the latest sensors in case those you are getting are not of the latest design - not that we've really done much in that we're struggling to reproduce the fault!
best regards,
Wendy
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Tuesday, March 25, 2008 8:40 PM
Wendy,
I did everything that you suggested (with both sensors), but they still broke during flight before being able to activate the Carbsmart at the field. Both times I checked to ensure that each sensor worked prior to going to fly. Each time after the 1st flight, I hooked up the sensor and power leads (which were velcroed off to the side) and did not see the sensor light activate. I even went through the set up again, but to no avail. I have ordered 3 more sensors and I will try it again, but if it fails a third time, then something else needs to be done. I have always been satisfied with CSM products, but the too fragile nature of these thermal sensors is very frustrating.
Thanks for your time,
Gary
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Tue, 25 Mar 2008
Dear Gary,
Sorry you're having problems with the CarbSmart sensor. This is one of those tricky things, as we (or our test pilots) have not managed to break one, but some customers are having problems. We've increased the heat shrink on it, but can't really wrap it any more because of size restraints and thermal issues. All we can suggest is making sure the glue covers the whole heatshrunk area so as to give good thermal contact between the fins, and so it doesn't vibrate against the fins, and also support the wire coming from the sensor so it doesn't get too much vibration and crack.
Best regards,
Wendy
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It really is a shame that CSM is blaming the users for a too fragile sensor. I know of several others that have experienced the same issues. I guess all these problems are our fault, even though it seems to be happening while mounted to different size engines and using different adhesives to "attach" the sensors. 
Gary
RJX of USA
Magnum Fuels
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