Shall we start a motor capacitor reference thread ?

[The Cobbler]

I promised a member to look at my compressor for cap sizes, and I got to it today . brings up the question, should we start a thread solely as a reference for motors to cap specs? I am thinking little to no discussion, just references to caps sizes vs motors
let me know what you think?

 

[The Cobbler]

Doerr motor
R511040bc94b
LR22132

120/240 vac. 15/7.5 amp

run cap 40uf 370v
start cap 450mfd 120v

 

[PCustoms]

Isn't there a formula that determines cap size?

 

[The Cobbler]

not that I've seen for AC. and there always seems to be questions on caps specs

 

[jbltwin1]

I'd sure copy/download some kind of reference sheet. I'm ALWAYS confused!

 

[mm08822]

Reference tables exist....there may be differences between them but it's a starting point.

 

[WillyBoy]

Here are some that I've noted.

Craftsman;
½ HP 124-155 mfd
¾ HP 3450 rpm 210-250 mfd

Century
1/3 HP 161-180 mfd

A.O. Smith
1/3 HP 124-138 mfd

Dayton
1 HP 534 mfd

Walker-Turner
½ HP 341-412 mfd

Delta
½ HP 161-180 mfd
1/3 HP 161-193 mfd Doerr
1/3 HP 161-193 mfd Marathon

Rockwell
1/3 HP 161-193 mfd A. O. Smith

 

[larry_g]

No, way to many variables and options to trust to this crowd. Some of the old motors I have I know do not have the original caps in them and I would not trust them to be correct. As said most of this information is available from reliable sources.

lg
no neat sig line

 

[wyliesdiesels]

how about just adding it to my FAQs sticky?

 

[PCustoms]

how about just adding it to my FAQs sticky?

Who vets it for misinformation?

 

[wyliesdiesels]

Who vets it for misinformation?

myself and other sparkys as has been the case since i started that thread

 

[BrandonV]

Howard 5092-02311-129Z
1 HP 3450 RPM

Factory start capacitor is 400-480 MFD.

 

[PCustoms]

Howard 5092-02311-129Z
1 HP 3450 RPM

Factory capacitor is 400-480 MFD.

Which capacitor

 

[BrandonV]

Which capacitor

Only has a start capacitor. Good point!

 

[Miss the Pontiacs]

Wow. Timely thread, however this deals with a small portable dust collector. I purchased a larger unit and this one became expendable. I was cleaning it up to sell and fired it up, it wouldn’t fire up. The problem was the capacitor, which I found bizarre as this is the first time I had to replace one. It took 5 stops which made it kind of elusive. Finally found one within original specs at Grainger, which was close but not exact specs. Price was right under $10. The specs are in the photo. The one shown is the original capacitor

 

[RonRock]

Took off like a Led Balloon. To bad.

Looks like I'll have to start yet another motor/capacitor thread.

 

[wyliesdiesels]

Took off like a Led Balloon. To bad.

Looks like I'll have to start yet another motor/capacitor thread.

needs to be stickied to the top of the forum!! otherwise it gets lost

@The Cobbler

 

[The Cobbler]

Didn't seem to have enough interest to make it a sticky