Driveline thrust bearing.
01-02-2007, 07:53 PM
#1
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Driveline thrust bearing.
Just got a couple Supervee 27's. Is it worth while to install a thrust bearing between the flex shaft coupler and motor housing to take the side load off the motor bearings and make them last longer? Is this only needed on more powerfull boats?
01-03-2007, 08:56 AM
#2
RE: Driveline thrust bearing.
A thrust bearing is always a good idea, motor bearings are not designed for axial loads. All my boats have them, either at the motor or at the strut. You will usually see a small speed increase with the bearings, and almost always see lower motor temps and slightly longer run times.
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01-03-2007, 09:40 AM
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RE: Driveline thrust bearing.
That's a good question. I've asked before also but never got a good response. I could understand having to use one if the drive dog was planted against the strut (like some other drive systems), but on the SV, if you have it setup correctly at the strut, you should have about 1/8" (or at least the dia of the flex shaft) space b/w the dirve dog and strut. This allows the flex shaft to "spin up" and gives space for the applied tension to the flex shaft. No real reason for the added drag or weight there.
At the motor. Maybe here, but again, no loads are present that aren't already covered by the bearing in the front of the can. Maybe post the question here for more visibility:
http://www.rcuniverse.com/forum/m_47...tm.htm#4752309
At the motor. Maybe here, but again, no loads are present that aren't already covered by the bearing in the front of the can. Maybe post the question here for more visibility:
http://www.rcuniverse.com/forum/m_47...tm.htm#4752309
01-03-2007, 10:13 AM
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RE: Driveline thrust bearing.
ORIGINAL: Got RPM
A thrust bearing is always a good idea, motor bearings are not designed for axial loads. All my boats have them, either at the motor or at the strut. You will usually see a small speed increase with the bearings, and almost always see lower motor temps and slightly longer run times.
.
A thrust bearing is always a good idea, motor bearings are not designed for axial loads. All my boats have them, either at the motor or at the strut. You will usually see a small speed increase with the bearings, and almost always see lower motor temps and slightly longer run times.
.
