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Is a new build or a old engine? Dave

Here is schematic of a brushless motor Dave

I am same page about DC motors. I remember pipe threader you thread a large pipe . Most can relate to hand drill and slows down it give a lot torque at bottom speed. Dave

When I was look adds on brush vs brushless I found a lot made up facts. It hard size motors just sell there motor and not giving true facts. The brushless is a three phase motor using VFD. Here is a torque graph for DC brush motor This torque chart of single and three phase motors. This...

It comes down to longevity, torque under power and cost. I read ads on the brushless motors they try say a good things but do not have twist the truth . I do have few thing that brushless best part is longevity The size motor right you probably not see any different. It low speed you watch...

Welcome to the group Dave

Welcome to the group Dave

Welcome to the group Dave

Welcome to the group Dave

I was thinking of fan ducking air to input air on motor with real good filter for both air and oil. Or just carbon build up like everyone else's does and buy new motor after the motor dies. It is possible to clean motor every few years too. Anyone can put sencer inside motor burshes for...

Looks nice Dave

It takes time to get a good bearing fit. I first time I was doing bearing fit For errors I use Loctite for ball bearing fit and made knurling tool bores. It looking at mic and each mark is divided in 10 space and realizing that how close I had to machine. It took a little time to learn. Now...

Myself I done hundreds of thousands of ball bearing. The fit is very important for ball bearing. Basic rule of thumb is the shaft 5/8" needs a 0.000,1 fit. The outside for a 1½" need a press fit 0.000,3". There are charts for press fit for ball bearings witch I used. Then tolerance is less than...

It good step to bigger things later. Dave

The control board use has more the rotor. 1. Acceleration control. 2. Break 3. Consented speed control as torquegoes up. 4. high speed limit 5. Low speed limit 6. Very high current The drill motors and rotors do not need all this is your finger will do job and a lot lower current and Los...

Doing ball bearings you working most time to ±0.000,1" A trick can use is 1/2" wide ball bearing is under size the first 3/16" by 0.001" make easy to start. Press fit on 1 diameter is 0.000,3" Dave

I think could hard to tell because the motor used at different horse power. But could work if run with no load in beginning . Then if temperature goes up years later at no load Dave

If took servo power feed on BP the brushes are bottom and part you see the carbon cover plate. Dave

Low speed belt setting the motor is running faster. What I am think the carbon from brushes is getting into electrical and forming a carbon resistor making the motor hotter. It something that is easily overlooked or may not even be seen. If fan running to slow to move carbon out is where...

Do use the high belt setting or low speed belt setting? Dave