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Cheap Machine HP upgrade

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Forum topic by Manitario posted 114 days ago 538 views 0 times favorited 11 replies Add to Favorites Watch
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Manitario

2255 posts in 1480 days


114 days ago

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

1240 posts in 545 days


#1 posted 113 days ago

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

gtbuzz

340 posts in 1038 days


#2 posted 113 days ago

April Fools?

View steve_in_ohio's profile

steve_in_ohio

1015 posts in 207 days


#3 posted 113 days ago

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

-- steve, simple and effective woodworking---

View kdc68's profile

kdc68

1940 posts in 873 days


#4 posted 113 days ago

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

b2rtch

4286 posts in 1645 days


#5 posted 113 days ago

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

3622 posts in 1761 days


#6 posted 113 days ago

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

3830 posts in 925 days


#7 posted 113 days ago

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.

-- Pine is fine, but Oak's no joke!

View b2rtch's profile

b2rtch

4286 posts in 1645 days


#8 posted 113 days ago

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

-- Bert

View bigblockyeti's profile

bigblockyeti

1372 posts in 317 days


#9 posted 113 days ago

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.

View Loren's profile

Loren

7226 posts in 2245 days


#10 posted 113 days ago

View Manitario's profile

Manitario

2255 posts in 1480 days


#11 posted 113 days ago

lol guys, April Fools!

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

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