Dust Gorilla motor follow-up

Re: Dust Gorilla motor follow-up

AaronH

>Keep in mind, Baldor makes A LOT of motors. True, it will still have the Baldor name on it - that's great. But I'm guessing it's not going to be the same motor as on their commercial units. But something is better than nothing!

CFM?

Shawn - in ID

>I've been looking very seriously at the Dust Gorilla too. I was comparing the CFM data with the ClearVu system (a spin-off from Bill Pentz's plans) and am bit confused. The Dust Gorilla (13.5" impeller; 2hp) shows ~1400 CFM at static pressure of 1 and ~1000 CFM at static pressure of 5 (http://www.oneida-air.com/products/systems/gorilla/performance.htm). Now the Bill Pentz design shows ~1800 CFM at static pressure over 8 and doesn't drop to 1000 CFM till static pressure is over 12 (14" impeller; 3 hp Leeson; performance curve at http://www.clearvuecyclones.com/Ordering_Info.html). Can someone help unconfuse me...that seems like a very big difference. (no affiliations...just dusty)

Re: CFM?

steve worcester

>The CFM is affected by many factors, but motor HP isn't really one of them (with some exception).

Most of it is really air drag and impeller design (# fins, pitch, height). Chamber size and intake size are a big factor.

Motor HP only comes into play in that the higher HP will work more efficiently and with less drag. Higher drag would bog down the motor under higher loads, like more static pressure.

A 1800RPM 1.5Hp will work the same at a low given static pressure as an 1800RPM 3HP.

The only issue I have with the clear vue is that it is plastic. It could generate more static and could wear out. All the crap that gets sucked into my (Oneida) cyclone, dust, bark, chips, sand paper, cats (ok, not cats) I would think could damage the plastic over a metal interior.

Re: CFM?

Dennis Fairman in Cary, NC

>Steve, You're pulling all of that through your cyclone (except the cats). So, do you and does anyone else take precautions with green wood turnings? Seems like the wetter the turnings, the more residue that would be picked up in the ductwork and other components of the system.(Even though it may be galvanized or plastic)

You could wait until you were done turning and then turn on the dust collector, as most of the turnings would have dried out. Any ideas on this?

Re: CFM?

Fog Tanner

>I have the 2hp Onedia and have passed some wet shavings through it. The only problem I had was the shavings sitting in the fiber drum. The drum got a little wet. Later this summer when I am between using the cyclone, I plan on coating the inside of the drum with epoxy, probably West Systems. Depending on how that goes I may put some glass cloth on the outside and paint it.

I looked at the Dust Gorilla yesterday, and I am still trying to figure out what the difference is between that and the one I have (the 2 hp componant model). I know I am extremly happy with mine and wouldn't trade it for anything except a bigger model. A friend of mine bought the 3hp model after he saw mine. But he has longer runs than I do and needed the extra cfm.

CFM?

Shawn - in ID

>This is why I looked at the Clear Vue system. It is only a few hundred more but the performance curves are MUCH better than the Oneida system - and I still wonder why it is so different. Given a main run of 15 ft or less and ~4-5 drops to machines used one at a time, is there any benefit to going for a stronger system? (and is comparing the performance curves reliable...I've read a lot about how they may be unreliable depending on conditions of the tests).

Re: CFM?

Fog Tanner

>The only real performance test is the one that works for you. I looked at all the numbers when I bought mine, mainly from sources other than manufacturors. The real test number for me was the bag unit didn't work on the lathe and the cyclone did. But, like so many other subjective observations, that was based on my environment and my configuration(s). The only way you can get reliable peformance curves for you, is to run them back to back in your environment. And mutiple times on different days. Just like buying a car with a 300 hp engine and going to Denver and expecting 300 hp with the thinner air. Add temp and you get another change in air mass. The same applies to dust collectors, different environments and conditions and different results. So, what are the real numbers, the ones that work for you and you're happy with.

My longest run is 36 feet. I have blast gates on everything, but I can run two machines at one time with the cfm I have. Its also important to match the pipe size with the cfm and the distance from the collector. The pipe size on mine changes as it gets farther from the cyclone. I would love to have twice the CFM, but I would have to have different size pipe to keep the pressure correct. There are some articles about pipe size, CFM, and the resulting pressure. The main thing the extra CFM would buy is more volume at the pickup. Around the lathe that would translate into more airmovement and less dust.

Re: CFM?

Steve Worcester

>I don't worry about the wet woods. I don't use the cyclone while roughing or even turning to speak of, it really wouldn't catch the big pieces anyway. I use it while sanding mostly and for cleaning up by picking up shavings off the ground. If I have heaps of shavings, it's easier to use the dustpan and garbage can than to clean the barrel.

Steve Worcester

www.turningwood.com