How good does a Festool 7 meter hose work?

[AlexThePalex]

Hi, I had a bit of trouble today with an irritated neighbour when I was sanding a window on the first floor (=second floor in USA) of my uncle's house with the DTS, because there was some dust. I couldn't hook my vac up because I was working at 5 - 6 meters high. Later on, I have to work even higher.

After some consultation with all parties involved we decided I'd stop working today and go on another time, but then with a 7 meter hose that might be provided to me.

I would really like to hear how good sanding on a ladder with the 7 meter hose works, from people who have experience with it. 

When I looked at the Dutch Festool site I noticed they don't sell a 27 mm x 7 meter hose (anymore - did they ever?), only the 36 mm x 7 meter hose. I could always get 7 meters x 27 mm by itself and the connectors separately. But I wonder how good a suction remains. I guess that with the 36 mm hose suction is a lot better over 7 meters. But how heavy would such a long 36 mm hose be?

Thanks in advance for any insight you have. 

 

[oldie]

Not being funny on my part - really.
Is there any way could have hose running through window or something.
Think it's a really good question.

Richard

 

[GarryMartin]

You can join hoses don't forget...

With only a D27 hose, you can get about 18.0M with a Rotex 150 (which requires the highest amount of suction).

With a D36 and D27, you can get to 25.0M, and with a D50 and D27, a staggering 30.0M.

Full details in a PDF file from Festool linked below.

http://www.festoolproducts.com/v/vspfiles/downloadables/HoseConnection.pdf

 

[Alan m]

Not being funny on my part - really.
Is there any way could have hose running through window or something.
Think it's a really good question.

Richard

that was my first thought.

someone posted recently the findings of a festool study that showed the extreem lengths of hose you could use.
i think it was close to 100 feet. they used 50mm for the first section then 36 then 27mm.

have you a 36mm hose  . if you do then buy another 50mm hose end (vac end) and a joiner. you might have the joiner from the boom arm.
then put the 50mm hose end on both ends of the 36mm and join that to the 27mm.

another plan. short of having a scafolding put up
i would get a second ladder adn a pair of brackets that hold the ladder out from soffets  or brackets that turn it into a roof ladde . put the brackets on updide down and half way up the second ladder. ratchet strap your vac to the brackets and sand away

 

[Alan m]

garry got there first. thats the review . its amazing the lengths it can go

 

[jmbfestool]

7 metre hose wont be a probem at all!  

I got a 15m hose a while ago but sent it back due to suction loss. I recon their was about 40% suction loss over 15metres.   Festool told me their would be no suction loss at all.

I was using the longer hose for home use  as a vacuum cleaner using the Air powered turbo brush  which requires ALOT of suction to power it efficiently and the high suction loss on the longer hose didnt power the turbo brush very well so poor that soon as you stuck it on carpet the brush head stopped.

Saying this your 7 metre is half the length the hose I got so suction loss would be ALOT less but also festool Sanders dont require as much suction  so my 15metre hose would of been fine for a sander!  Just not for a turbo brush which is what I bought it for.

JMB

 

[AlexThePalex]

Thanks for your responses. Only interested in the question though, not in alternatives. Among other options like a scaffolding, it was mentioned a longer hose might be arranged, who would say no to that? I can't bring any tools inside. And I have only one vac+hose at my disposal right now. My other vac has been lent to a friend.  

7 metre hose wont be a probem at all!  

I got a like a 15m metre hose a while ago but sent it back due to suction loss. I recon their was about 40% suction loss over 15metres.  

Was yours the 27 or the 36 mm hose?

 

[Rick Christopherson]

I got a 15m hose a while ago but sent it back due to suction loss. I recon their was about 40% suction loss over 15metres.   Festool told me their would be no suction loss at all.

I was using the longer hose for home use  as a vacuum cleaner using the Air powered turbo brush  which requires ALOT of suction to power it efficiently and the high suction loss on the longer hose didnt power the turbo brush very well so poor that soon as you stuck it on carpet the brush head stopped.

I didn't know they even made a 15 meter (50 feet) hose (unless you bought the raw hose by the meter and installed your own ends--probably NAINA). That's huge! I could vacuum my whole upstairs floor with the vacuum staying on the lower level.  [smile]

Alex, as far as I can tell, the 27mm hose is available only up to 5 meters. However, it looks like you can also buy it in raw hose lengths too (again, probably NAINA). The 7 meter x 36mm hose should work fine. I use that with my CT Mini and Turbo brush to clean my house. To make it less work/weight for you, lash the top (1 meter back) of the hose to your ladder so you aren't supporting the weight of the entire length.

 

[jmbfestool]

Thanks for your responses. Only interested in the question though, not in alternatives. Among other options like a scaffolding, it was mentioned a longer hose might be arranged, who would say no to that? I can't bring any tools inside. And I have only one vac+hose at my disposal right now. My other vac has been lent to a friend.  

7 metre hose wont be a probem at all!  

I got a like a 15m metre hose a while ago but sent it back due to suction loss. I recon their was about 40% suction loss over 15metres.  

Was yours the 27 or the 36 mm hose?

36mm hose

 

[jmbfestool]

I got a 15m hose a while ago but sent it back due to suction loss. I recon their was about 40% suction loss over 15metres.   Festool told me their would be no suction loss at all.

I was using the longer hose for home use  as a vacuum cleaner using the Air powered turbo brush  which requires ALOT of suction to power it efficiently and the high suction loss on the longer hose didnt power the turbo brush very well so poor that soon as you stuck it on carpet the brush head stopped.

I didn't know they even made a 15 meter (50 feet) hose (unless you bought the raw hose by the meter and installed your own ends--probably NAINA). That's huge! I could vacuum my whole upstairs floor with the vacuum staying on the lower level.  [smile]

Alex, as far as I can tell, the 27mm hose is available only up to 5 meters. However, it looks like you can also buy it in raw hose lengths too (again, probably NAINA). The 7 meter x 36mm hose should work fine. I use that with my CT Mini and Turbo brush to clean my house. To make it less work/weight for you, lash the top (1 meter back) of the hose to your ladder so you aren't supporting the weight of the entire length.

Correct

I bought it by the metre and got the ends for it.    That was the plan!  I bought the hose so I could leave the Vacuum at the bottom of the stairs and vacuum upstairs. 

I think I might got it wrong I think it might of been 17metre  or might of been 15metre I cant remember  17-15-17 ???

Well my Dealer told me that Festool told him that suction loss would be very minimal!  Which wasnt true!  Soon as I turned my CT22 on I could tell instantly from touching the end of the hose their was a reduction in suction.  Then when attaching turbo brush which normally sounds like a JET engine spinning up  just sounded like a quiet Fan  and simply touching the spinning brush I was able to bring it to a stop.

 

[Rick Christopherson]

  I bought the hose so I could leave the Vacuum at the bottom of the stairs and vacuum upstairs.   

You're as lazy as I am! 

With the 7 meter hose, I can vacuum the whole house by moving the vac just once (give or take rolling it a few feet). At the base of the stairs, it will cover the entire lower level. At the top of the stairs, it will cover the upper level.  [thumbs up]

 

[Stone Message]

Why not take the vacuum halfway up the ladder - use a length of rope and hang it so it is horizontal. If you are using a scaffold or frame then it is really easy. Festool hose is not cheap and taking the vacuum closer to you will work.

Peter

 

[GarryMartin]

Well my Dealer told me that Festool told him that suction loss would be very minimal!  Which wasnt true!  Soon as I turned my CT22 on I could tell instantly from touching the end of the hose their was a reduction in suction.  Then when attaching turbo brush which normally sounds like a JET engine spinning up  just sounded like a quiet Fan  and simply touching the spinning brush I was able to bring it to a stop.

Doesn't it have something to do with air velocity as well as volume? I'm no expert here, but starting with 36mm and reducing to 27mm (or 50mm to 36mm to 27mm) would have produced a higher velocity at the tool end which may have kept things running?

Some more information on Festool hoses and hose length here;
http://festoolownersgroup.com/ask-festool/max-length-of-50-mm-hose-without-loss-of-suction-efficiency/

And everything you ever wanted to know about ducting (and therefore by reference, hoses) here;
http://www.billpentz.com/woodworking/cyclone/ducting.cfm

 

[jmbfestool]

Well my Dealer told me that Festool told him that suction loss would be very minimal!  Which wasnt true!  Soon as I turned my CT22 on I could tell instantly from touching the end of the hose their was a reduction in suction.  Then when attaching turbo brush which normally sounds like a JET engine spinning up   just sounded like a quiet Fan  and simply touching the spinning brush I was able to bring it to a stop.

Doesn't it have something to do with air velocity as well as volume? I'm no expert here, but starting with 36mm and reducing to 27mm (or 50mm to 36mm to 27mm) would have produced a higher velocity at the tool end which may have kept things running?

Some more information on Festool hoses and hose length here;
http://festoolownersgroup.com/ask-festool/max-length-of-50-mm-hose-without-loss-of-suction-efficiency/

And everything you ever wanted to know about ducting (and therefore by reference, hoses) here;
http://www.billpentz.com/woodworking/cyclone/ducting.cfm

I don't know much about it either.  I just asked the question  will I lose suction and they said no lol. 

I can't remember but I'm sure I found the turbo brush worked better with the larger hose than smaller hose so I assumed the larger hose would be better for the 17metre length.

Jmb

 

[AlexThePalex]

Why not take the vacuum halfway up the ladder - use a length of rope and hang it so it is horizontal. If you are using a scaffold or frame then it is really easy. Festool hose is not cheap and taking the vacuum closer to you will work.

I do not consider this safe practice. If I had a scaffold I would take it up and secure the vac on the platform, but I'm not gonna dangle it from a rope on my ladder. I also need to be able to move my ladder.

 

[GerryV]

Flow in any hose, tube or pipe is laminar with the slowest movement being along the walls and progressively higher towards the centre. In cases like this, increased hose diameter is definitely your friend.

 

[neeleman]

I use two hoses D27 and D36 which are 3,5 m long and are connected together.
The suction is less but when sanding you don't need so much.
It's still a hassle and the small sanders like the DTS becomes a little heavy with the 7 m hose hanging downwards.
So rotating the sander for reaching the corners is not as easy.

Festool should design a small vacuum (name: Micro) which can be carried like a backpack.
You then need a small hose only and a power cord.
May be it can also be battery powered, like some DeWalt or Hilti vacuum's already have on the market.

Or maybe the sander can also be battery powered like Makita already has on the market.
Although it can only be used for 20 minutes or so in full power.

 

[Svar]

Festool should design a small vacuum (name: Micro) which can be carried like a backpack.

I also suggest adding a small jet pack, so Alex can sand the house while hovering high in the air.
I'm sure my idea will be helpful... You are welcome.  ;D

 

[AlexThePalex]

Ha, I like that jetpack idea.  [smile]

Ok, little update, somebody I know who's not a member here but read this thread contacted me and lent me an extra 27 mm hose. I connected the two I had now with duct tape to form a 7 meter long hose. It worked splendidly. I didn't notice any loss of suction because of the longer length. I also didn't notice the extra added weight, it was still light as a feather. Made a large difference in dust exposure. Everybody happy.

Thanks dude, you know who you are.  [wink]

And thanks to the rest for all your suggestions.  [thumbs up]