what problem will arise without the lower pinion bearing

[sansone]

my 6s motor shaft is not long enough to pass through the lower bearing.
It's flying fine but what should I look for after 50-60 flights (maybe motor bearing failure)

[ke6d]

Originally Posted by sansone

my 6s motor shaft is not long enough to pass through the lower bearing.
It's flying fine but what should I look for after 50-60 flights (maybe motor bearing failure)

What motor? The counter bearing takes a lot of load off the motor bearing so without it, the motor bearing would suffer. I have a 12S setup on my T-Rex 600CF (HK 4025-630KV motor) that does not have the counter bearing setup. The bearings lasts around 100 flights (oil motor bearings every 5-8 flights) Changing the bearings on the Scorpion motor is 15 min job. Bearings cost $6 /set so I would not even care too much.

[sansone]

Originally Posted by ke6d

What motor? The counter bearing takes a lot of load off the motor bearing so without it, the motor bearing would suffer. I have a 12S setup on my T-Rex 600CF (HK 4025-630KV motor) that does not have the counter bearing setup. The bearings lasts around 100 flights (oil motor bearings every 5-8 flights) Changing the bearings on the Scorpion motor is 15 min job. Bearings cost $6 /set so I would not even care too much.

Turnigy Typhoon 600 class 1100kv ..
at least the motor is easy to remove & replace, I can replace the bearing when it fails.
The idea was to keep costs down for the 6s setup. Eventually will go 12s but if I could go back, the 12s setup would have been fine right from the start. The F50 kit and Beastx killed my budget

[JustPlaneChris]

I've been flying a Turnigy T600 880kv (6mm shaft) since last summer without the lower pinion support on an 8S setup. So far the motor bearings are still fine, and the performance is great. I'm happy with it.