Smaller is better when it comes to wands and REs...?

[Mikey P]

How much would you say the improvement of the Devastator is over any other wand vacuum wise? 10%, 25%?

Now how about the increased suction from a shorter head width wand? Use a 2" tube and compare a 12" and a 14" head's performance, the shorter option will have how much more suction?

Look at the Rotovac 360's and the Trex, owners of both will tell you the smaller option works better, slower but better.



I'm really looking forward to my Devastator 12"..

I was thinking I wanted a 1.5 tube but I think with a 2" I'll have way more performance than Marty and his 14"/Cleanco, and really, that's all that matters to me.

 

[BIG WOOD]

Is the 12" gonna be with or without a swivel? If it's without, put me on the order list, because I'm looking for something to replace my prochem quad

 

[Mikey P]

without?


lordy.

at what age did they take off your football helmet?

 

[BIG WOOD]

without?


lordy.

at what age did they take off your football helmet?

I have had my head thumped on a few times

I'm assuming you're saying this has the swivel on it

 

[Larry Cobb]

With a modern TM with adequate lift 15" or more . . . .

The lift developed at the carpet w/14" & 12" should be very close . . .

which would give about 17% more CFM thru the 14" head.

Tom's head is ported to flow more, with less loss of lift and more CFM.

How much CFM on carpet has not been tested accurately w/ flowmeter yet.

 

[Mikey P]

Tom's head is ported to flow more...

No kidding.

 

[Mrice]

@Larry Cobb , I've heard you talk about 15" of lift or more (above) or vac reliefs set at 16" inches or more. Specs on a roots blower is a max of 15" vac, are you using another brand of blower or am I missing something?

 

[Desk Jockey]

He's from Texas. The laws of physics cease to exist in that state.

They are called blowers....run it till ya blower her.

 

[Larry Cobb]

@Larry Cobb , I've heard you talk about 15" of lift or more (above) or vac reliefs set at 16" inches or more. Specs on a roots blower is a max of 15" vac, are you using another brand of blower or am I missing something?

The Sutorbilt 4MR has a continuous limit of 16" of lift, due to separation of the lobes from the gearcase:


A brand new blower system on our newest Dynachem TM will operate a couple of in.hg. above that level.

Sadly, many TM manufacturers are regressing in maximum lift on their TM's.

 

[TConway]

I think what Larry is getting at and I may be wrong but here it goes.

A number 4 blower is probably not going to truely hold 14-16" of hg on your average carpet the WCI leak is too much.....unless it is on CGD carpet. I would say on average the # 4 blower at 125' away from TM is going to be around 9-11 depending on the type of carpet.

But the vac hose restriction as you incress the hose run starts to climb, the average TM is set at 12-13" hg. The normal spring type Vac Relief starts to leak almost instantly and as you add hose it leaks even more, so when it is set at 12-13" by the time the vac gets to wand you are bypassing a lot of air/vac.
Add to that the leaky cuffs or what ever else you have on the hose run you are probably only really getting 5-6" more hg to really work with.

So what Larry is getting at is set the lift at 15-16" Hg on a # 4 blower when actually cleaning is never gonna hit that, and the # 4 can handle 16"so when the vac hose gets sucked up to something that blocks the vac off 100% it is not gonna cause damage in the brief amount of time. By setting at 16" Hg you will allow the #4 blower to get more of the suck to the WCI and not drop at the Vac Relief valve as much due to what is lost in the hose run.

 

[Mikey P]

And void the warranty..

 

[BIG WOOD]

And void the warranty..

That's the first thing that came to my mind. The engine works harder when that kind of restriction is on it, causing more wear on the components. That's why they set the hg lower than the blower requires. I guess if it was just the engine and the blower, it would be ok to set it at 16. But combine all the other components, and you've got more heat

 

[Mikey P]

How about a spring relief valve with a Dual or Long run switch that would crank it to 16"

No reason to stress everything 24/7 when 13" to 14" is fine for 100- 150' hose single wand runs

Cobb is going to be swinging his inches theories extra hard this year until the Cowboys lose the season, by inches..

 

[Larry Cobb]

2017 will be the year of High Lift TM's

Our brand new design Vac System will generate 18" hg . . .

with less stress on the engine because it is more efficient.

Mikey has already stated that he adjusted his vac relief valve higher.

P.S. Cowboys now have home field advantage throughout the playoffs.

 

[Desk Jockey]

Gezz is that galvanized pipe...and pvc. Ohh my!

 

[Mikey P]

It's Texas, be grateful it's not made from fence posts and barbwire

 

[hogjowl]

Mikey ... dude ... Toms head don't move HALF the hot air yours does.

 

[Mikey P]

Merry Christmas asshole!

 

[Total_Rookie]

The Sutorbilt 4MR has a continuous limit of 16" of lift, due to separation of the lobes from the gearcase:
View attachment 68493

A brand new blower system on our newest Dynachem TM will operate a couple of in.hg. above that level.

Sadly, many TM manufacturers are regressing in maximum lift on their TM's.

Ditch the pvc, from a consumer perspective it looks less appealing. Even if it is a great unit.

 

[BIG WOOD]

Ditch the pvc, from a consumer perspective it looks less appealing. Even if it is a great unit.

What's that big black hose that Hydramaster and prochem use with the aluminum or stainless steel elbows? That would look more professional and heavy duty

 

[Mikey P]

Agreed.


The PVC is just too EZ to acquire..

 

[Desk Jockey]

What's that big black hose that Hydramaster and prochem use with the aluminum or stainless steel elbows? That would look more professional and heavy duty

Marine exhaust hose.

 

[Mrice]

@Larry Cobb , I don't know any better, but is there not much affect vacuum when the port is reduced down to 2" from 2.5?

 

[Cleanworks]

You lose a ton of airflow (cfm) if you reduce from 2.5 to 2 inch. Whatever diameter your blower port is, you need to run that same size to your waste tank.

 

[Larry Cobb]

We use more stainless steel in our blower plumbing & HX exhaust system than other TM manufacturers (other than AeroTec). Marine exhaust rubber hoses are short lived for blower exhaust. We use silicone reinforced tubing rated for 500 degrees. Our stainless fittings are 2 3/8" ID and minimal compared to the restriction of blower silencers in the total picture of TM flow. Our silencers are all stainless.

Merry Christmas to All

 

[Cleanworks]

Don't some of your blowers have 3 inch ports? Are you reducing them down to 2 3/8?

 

[Larry Cobb]

4MR Blowers have 2.5" FPT ports.
Significant restrictions in the blower system are, in order of importance:
1. Wand-Carpet Interface (minimized by cast or machined vac head)
2. Blower Silencer (minimized by straight-thru design & all stainless construction)
3. Vac Hose interior smoothness (minimized by SuperFlex laid out in straight line)
4. Vac Filter Design (minimized by larger mesh or quality inline filter)

 

[Lee Stockwell]

The Sutorbilt 4MR has a continuous limit of 16" of lift, due to separation of the lobes from the gearcase:
View attachment 68493

A brand new blower system on our newest Dynachem TM will operate a couple of in.hg. above that level.

Sadly, many TM manufacturers are regressing in maximum lift on their TM's.

Why the reducer going into the blower? ...and all the elbows.

Lift doesn't mean much if you aren't moving air efficiently.

 

[Cleanworks]

I guess I was thinking you had some larger blowers on the larger machines.

 

[Larry Cobb]

I guess I was thinking you had some larger blowers on the larger machines.

We do . . . 5MR on our largest TM. DC538