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Second ball bearing below the freewheel hub adds stability!
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Second ball bearing below the freewheel hub adds stability!
Russ Beck kindly offered this info about the MaxiR one-way bearing kit improvements. A few of us have encountered issues with the original one-way kit, so it's good to hear about improvements coming soon. Russ sorta reverse engineered what he thought LAHeli was doing. An extra ball bearing is added to the bottom of the spur gear to support the bottom end of the main shaft. According to Russ, this really stabilizes the main spur gear. With his permision, his info is presented here. Since this article was originally presented, the LAHlei upgrade part #Y1555 has reached our shores.
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Above is the finished version of the upgrade done by Russ. |
Above is a photo of the plastic upgrade for the freewheel kit installed. |
Above is an exploded view of the improved one-way. |
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Above is a photo showing the parts used and mods done by Russ. |
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Russ Beck writes... La Heli has come out with another upgrade! Most of us like the idea of a one-way on our heli's but there is a trade off most of the time, we have to deal with a main gear that is not solid to the main shaft when the one-way bearing is not engaged. While searching around on the La Heli web site I found the third attached picture and inquired about this new part. They mentioned that this new part would be made of plastic and being the impatient person I am I keep racking my brain on how they created the part in the third picture, and finally the light came on. They took a Y1552 hub (in the picture it was actually Y7552 red anodized part) flipped it upside down and removed some material off the face so that the 3mm ID 6mm OD bearing would hold about 2mm of the bottom end of the main shaft. The Y1553 One-way collar also needs to be cut on both ends. |
The end that rides on the upper (original bearing) needs to be cut so that there is around 1 mm clearance to the face of the one-way bearing. The other end I trimmed to allow about 2mm of clean unchamfered shaft to protrude out (you could go for more). Then you have to remove enough material from the face of the second Y1552 to allow the bottom new bearing to hold the end of the main shaft. Warning the face of the Y1552 must be square with the cylinder that the 3mm ID 6mm OD bearing rides in. After all this I am very happy to report that this upgrade works GREAT! You cannot move the Main Gear independently of the main shaft at all. The good news is that LA Heli has produced a one-way second bearing hub (shown on left), so we don't have to go through this. But I am sure everyone will be very happy with the results. |
