15" planer slow motor start

  • Advertise with us

« back to Woodworking Skill Share forum

Forum topic by BrianA posted 12-12-2011 07:41 PM 1557 views 0 times favorited 10 replies Add to Favorites Watch
View BrianA's profile


76 posts in 2993 days

12-12-2011 07:41 PM

I bought my 15” Grizley -Delta clone and it bogged down when more than a 1/4 turn of the wheel. Thought it was the blades. Replaced them and set up the planer so all rollers etc were in the “correct” placement.

When I start the planer it takes maybe 10 seconds for the motor to get going at full speed. It seems to have slowed down a bit with the colder temps here. Mid to upper 20s. It seems that even with the sharp knives it still should take more than 1/4 turn planning some cedar.

Any idea why the motor would take so long to get up to speed? Belts seem to have a bit more flex than I would like, but they are not slipping when it bogs down.

I’m a bit stumped. I thought motor brushes, but it starts turning right off the bat, but takes time to get up to speed.

Thanks Brian


10 replies so far

View Al Killian's profile

Al Killian

85 posts in 2589 days

#1 posted 12-13-2011 06:58 AM

It sounds like it is not getting enough power. Is it on its own line or is it sharing one? Check each leg for 120 before you go anyfurther.

-- Owner of custom millwork shop

View Loren's profile (online now)


10252 posts in 3612 days

#2 posted 12-13-2011 02:17 PM

yeah, sounds like a 240v motor running on 110. They will run,
but not well.

View tenontim's profile


2131 posts in 3708 days

#3 posted 12-13-2011 02:50 PM

I agree with the running on 110v. I know with Grizzly you have to put your own plug on the end of the wire.

View SnowyRiver's profile


51457 posts in 3444 days

#4 posted 12-13-2011 04:03 PM

I agree with what has been said. Also many motors have a starter capacitor on them which might be defective. The cold will affect the start up, but it will also make it worse if something is wrong with the motor or power.

-- Wayne - Plymouth MN

View BrianA's profile


76 posts in 2993 days

#5 posted 12-13-2011 04:54 PM

It is on an extension cord. I am running off one outlet in the garage switching each machine onto the cord. I’m not sure the belt is tighter than “a gnat’s rosebud in January” but do not see any slippage when it is running.
The label says 2 HP 110/220 Phase 1 cycle 60HZ.

Any testing I can do?



View Lee Barker's profile

Lee Barker

2170 posts in 2814 days

#6 posted 12-13-2011 06:11 PM

Unplug the motor and take off the lid of the connection box on it. There is a wiring diagram for the two voltages inside or outside. Check to see what it’s wired for and check the connections.

We’ll get this figgered out!

I am curious if the cold weather is coincidence or the cause of the problem, but I agree it sounds more like a voltage issue. It should come up to running speed in a couple of seconds.

Just thought of something else…could it be a bearing problem in the planer? Again unplugged, loosen the belts and turn the cutterhead to see if it’s turning freely and quietly.



-- " his brain, which is as dry as the remainder biscuit after a voyage, he hath strange places cramm'd with observation, the which he vents in mangled forms." --Shakespeare, "As You Like It"

View ajosephg's profile


1880 posts in 3525 days

#7 posted 12-15-2011 05:16 AM

So – are you running it on 110 or 220? If you are running it on 110, is the motor wired for that voltage?

In other words, you it will not run properly on 110 if the motor is connected for 220.

-- Joe

View Fred Hargis's profile

Fred Hargis

4949 posts in 2457 days

#8 posted 12-15-2011 02:50 PM

If the motor is wired 240V and being run on 120, I’m not sure it would ever get to full speed. I’ve only seen that happenstance twice, and in both cases the motor would run very, very slowly. You may have a capacitor that’s went bad. They are fairly cheap, so if that’s the problem it shouldn’t be expensive to fix. Have you seen the planer run correctly? You mentioned you bought it and this happened.

-- Our village hasn't lost it's idiot, he was elected to congress.

View BrianA's profile


76 posts in 2993 days

#9 posted 12-15-2011 04:42 PM

I will not have a chance to dig into this until the weekend. Will check my wiring and let you know. How do you test the capacitor?


View Paul Stoops's profile

Paul Stoops

348 posts in 2525 days

#10 posted 12-23-2011 08:40 PM

You say you are running on an extension cord. 220V extension cords aren’t very common, so my guess is that you are running on 110V. What is the wire size of the extension cord? It is possible that your extension cord is too small or too long, causing a voltage drop. Also, a 2HP motor running on 110V will pull a lot of current—probably more than 15A (and way more than that at start), requiring at least a 12ga. extension cord.

-- Paul, Auburn, WA

Have your say...

You must be signed in to reply.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics