chris6414
Posts: 621
Joined: 12/23/2004 From: Warminster ,
PA, USA Status: offline
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100+ flight inspection. Hello all, I just did a once over on my Belt CP since it have well over 100 flights and has seen combat in the harsh deserts of Iraq last year. Here is what I have found. Main shaft bearings are worn and need to be replaced. They are of very poor quality and are open faced bearings which let in all the dust and dirt. I will be using higher quality ABEC-3 bearings that are just slightly taller than the ESky bearings. http://www.helidirect.com/product_info.php?cPath=95_97&products_id=1474 Next, the tail bearings. High speed application that should be checked at 50 flights. Mine were very worn and I will be upgrading to Ceramic bearings. In Iraq, my friend loved to "Dust off" and within 30 flights his tail case melted because of the dust his bearings ingested and heated up. Luckily he was able to land safely. http://www.helidirect.com/product_info.php?cPath=95_98&products_id=2131 I would also check the washout bearings. When I removed my plastic one and replaced it with the aluminum one, I noticed the bearings wear very notchy, which is bad. Check those as well. Most of these issues will most likely never be seen while flying/learning, as they happen gradually. My manual says to check the main and tail bearings at 100 flights. I would just upgrade them as the open face is sure to allow premature failure and unwanted vibration. Keep in mind my helo flew just fine with just a slight vibe that concerned me so I went in and inspected. I'm glad I did. I also jumped into the united Hobbies pool and made a $9 (shipped) order and picked up some great little LiPo tools that are a must have. Plus, it made it here in 11 days. The onboard monitor is amazing, as it watches each cell instead of the whole pack so you can see if one of your cells is weaker than the others and base your flight times at that. The checker lets you check your cells after to see what voltage you are at. You can even mount that to the helo and see how low the cells dip down to the hundreths of as volt. Awesome! http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=6454 http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=4175
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