Cheap Machine HP upgrade

  • Advertise with us

« back to Power Tools, Hardware and Accessories forum

Forum topic by Manitario posted 04-01-2014 07:30 AM 1184 views 0 times favorited 11 replies Add to Favorites Watch
View Manitario's profile


2679 posts in 3080 days

04-01-2014 07:30 AM

So, I was at the BORG last week and they had a sale on 6.5hp shop vacs. I was shocked that I could get 6.5hp out of such a small motor, especially at only 120V. However, I’ve been wanting to upgrade some of my larger machines for a long time; so I bought a few of the shop vacs and took the motors out and replaced the motors on my DC (previously only 5hp); TS (only 3hp) and jointer (3hp). The result was awesome; I now have 6.5hp motors in these machines, that only cost $60 each and all run on 120V! I wish I would have done this years ago, instead of using the larger, heavier, less power motors these machines previously had. I’m not sure how shop vac breaks the laws of energy and physics but the results speak for themselves!

-- Sometimes the creative process requires foul language. -- Charles Neil

11 replies so far

View Shawn Masterson's profile

Shawn Masterson

1325 posts in 2145 days

#1 posted 04-01-2014 11:49 AM

Its a little early here, but wow. I will never understand it either.Its not just vacs. I had a 60 gal compressor with a “6.5 hp ” motor on it. It was rated for 15 full load amps on 220. Really, thats more like 2.5-3 h. I have noticed as of recent that on gas motors they are started torque numbers instead of HP. Really I feel they should rate motors in watts, those numbers are factual and not fudged.

View gtbuzz's profile


427 posts in 2638 days

#2 posted 04-01-2014 12:14 PM

April Fools?

View steve_in_ohio's profile


1195 posts in 1807 days

#3 posted 04-01-2014 12:30 PM

haha, what a great idea. Why hasn’t anyone else thought of this. Happy April Fools

-- steve, simple and effective

View kdc68's profile


2691 posts in 2474 days

#4 posted 04-01-2014 01:02 PM

Cleverly written…. I appreciate a good sense of humor…...Thanks for sharing your power tool “upgrade” !!.....

-- Measure "at least" twice and cut once

View b2rtch's profile


4863 posts in 3245 days

#5 posted 04-01-2014 01:50 PM

Seriously: how do they rate the HP on their motors?
How do they come up with such numbers?

-- Bert

View Jim Bertelson's profile

Jim Bertelson

4250 posts in 3361 days

#6 posted 04-01-2014 02:50 PM

You could hook a few of those up to battery, and run your car…......slick deal…......(-:

........have a happy April 1…......

I think the rating is made when the motor is at peak output just before it fails from over heating. Someone here on LJ’s who was in the motor business said that a number of years ago. I don’t know the exact process, but the point is that it is not a sustainable output.

The only way to judge those motors is to look at the wattage, as noted by Shawn, then you get a relative idea. It takes 15 amps on 110V to yield 1.5 hp, if I am not mistaken.

-- Jim, Anchorage Alaska

View Mainiac Matt 's profile

Mainiac Matt

8546 posts in 2525 days

#7 posted 04-01-2014 03:24 PM

Funny one….

how do they rate the HP on their motors?

it’s called “peak developed” HP

and it’s a pure fabrication of the marketing dweebs to deceive the ill advised public.

-- I yam what I yam and that's all what I yam

View b2rtch's profile


4863 posts in 3245 days

#8 posted 04-01-2014 03:44 PM

When I was in school ( many, many moons ago) it was 735Watts/HP and watts are: Amps x Volts

-- Bert

View bigblockyeti's profile


5285 posts in 1917 days

#9 posted 04-01-2014 04:08 PM

They measure the horsepower in a NON – SAE structured test where the motors are brought to a near stall condition very rapidly so the armature’s inertia helps to give a false reading of over twice (usually over three times) what the motor can maintain. Currently 746 watts = 1.0 hp. Honda’s GX series gas engines no longer list horsepower, only displacement due to a class action suit brought against several manufacturers claiming false outputs. The test performed is designed to produce a desired result, kinda like the ecoboost engine in the F-150, gets better mileage for the test, same as the others in real life situations.

-- "Lack of effort will result in failure with amazing predictability" - Me

View Loren's profile


10477 posts in 3845 days

#10 posted 04-01-2014 04:22 PM

Good one.

View Manitario's profile


2679 posts in 3080 days

#11 posted 04-01-2014 04:25 PM

lol guys, April Fools!

-- Sometimes the creative process requires foul language. -- Charles Neil

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