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Accessories Introduction
Bass Covers
Carbon Fibre Flight Trunk
CF Kevlar Flight Trunk
Folding Stool
Double Trolley
String Winding Key
Bass Wheel
Bass Humidifier
Bow Quivers
Brass End Pin Unit is
Bow Cases
Bridge Adjusters
Tourte Mute
Bass Bibs
Central Strap
Strings
Shoulder Straps
Steel End Pins
End Pin Protectors
Gig Stand
Wolf Note Eliminator
End-Pin Anchor
Carbon Fibre Bow
Rosin
Tailpiece Wires
Pickups, Pre-Amps & Amps
Ultra Practice Mute
Digital Hygrometer
Tuners
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Double Bass Accessories - strings - carry cases - bow cases and quivers from the doublebass specialists The Contrabass Shoppe for doublebasses (double basses) musical instruments

Double Trolley - displayed as a double bass trolley
Double Trolley - displayed as a double bass stool
Double Trolley - displayed as a double bass trolley
Double Trolley - in pieces
Click to zoom to the Folding Tripod Stool for Double Bass Players

It's absolutely amazing. It's a stool and trolley in one.

Yes it is. The Double Trolley produced by Double Design of Sweden is an absolutely ingenious idea that allows the user to transport their instrument with the utmost of ease and then once at their destination transform the trolley within a few seconds into an incredibly comfy yet sturdy bass stool.

In less than 15 seconds the assembled stool can be transformed into a trolley?

Yes - it may seem incredible but it is true. The Double Trolley consists of three main pieces - a seat, a wheel piece and a stool piece - that simply slot and lock firmly together. Following the end of your rehearsal or gig there are only five simple steps to transform the stool into a trolley. Here's how it is done.

i) Remove seat by holding in the snap-in-latch that is under the seat and lifting straight up.
ii) Place seat onto the wheel piece by slotting the two aluminium 'taps' - with the pointed part of the triangular seat facing the wheels - into the holes at the front of the wheel piece.
iii) Place the two front legs of the stool piece into the tubes of the wheel piece.
iv) Release the plunger on the third leg and lock it in position by pressing the leg against the 'tap' on the wheel piece.
v) So that the top shoulder of your instrument rests on the padded rest - adjust the trolley height by squeezing in the two 'taps' on the middle bar and lifting up on the top handle until the desired height is achieved and release.

That's it - the Double Trolley is now transformed from stool to trolley. Converting back to the stool is simply a matter of reversing the procedure.

How do I attach my bass to the trolley?

You can attach your instrument to the trolley with whichever side (bass or treble) that you prefer and because of the soft leather and foam-padded contact points - with or without a cover. When attached the instrument can stand safely by itself - balanced by the two wheels on one side and by the endpin on the other. Should you be on a bus or train a second elastic-strap (supplied) can be attached around a pillar, post or bar - so that the instrument can be can be left worry-free in this 'space saving' upright position.

Can you tell me the method of attaching bass to trolley?

Yes - there are two ways in which you can attach your bass to the trolley.

1) With the bass in the upright position.

i) Place the trolley so that the hook is in the front of the seat.
ii) Pick your double bass up and attach the hook to the endpin while supporting the Double Trolley with your leg.
iii) Position your instrument between the side supports of the wheel piece so it rests on the thickly padded seat.
iv) Attach the elastic strap onto one side of the handle, around the neck and onto the other side of the handle so that the strap pulls the bass straight against the upper padded part of the trolley.

That's it - tilt the Double Trolley towards your shoulder and away you go.

2) With the bass on the floor.

i) With your instrument on its side lean the thickly padded seat of the trolley against the large curve of the bottom bout and tilt the trolley downwards towards the neck of the instrument.
ii) Attach the hook to the endpin.
iii) Attach the elastic strap onto one side of the handle, around the neck and onto the other side of the handle so that the strap pulls the bass straight against the upper padded part of the trolley.
iv) Raise the bass into the upright position.

That's it - tilt the Double Trolley towards your shoulder and away you go.

Is there any height adjustment on the stool?

Yes - there is a range of height positions that will suit every height of player from youngsters to the tallest of the tall. By squeezing the two 'taps' on the central bar with one hand and lifting the seat with the other - the height of the seat top from the floor can be adjusted from 61.5cm to 94.0cm in thirteen steps of 2.5cm. Just how this absolutely staggering range of height adjustments is possible from such a compact unit is almost beyond comprehension - it just goes up and up and up. For the highest positions we boffins at The Contrabass Shoppe reckon that you'd need legs as long as a baby giraffe's!

Is there a footrest?

Yes - the lower rung of the stool piece can be used as a footrest for one foot. To prevent any loss of balance when using the stool the golden rule to follow is always have at least one foot on the ground.

What about the seat?

The actual seat has been ergonomically designed to allow the maximum amount of air to circulate around the upper-leg / thigh area. The base of the seat is made from a mighty-strong wood laminate while the surface of the seat is made from thick high-quality genuine leather. Internally it is thickly bolstered with 7.0cm of firm and supportive foam with an outer layer of soft foam to give added comfort. It goes without saying that it is supremely comfy even when used for extended periods of playing. What's more - the whole stool is designed so well and made so meticulously from high quality materials that it is absolutely free of creeks, squeaks, rattles or noises of any sort. How fabulous is that?

Is there any tilt on the seat?

Yes. For those of you who find it more comfy to play with a seat that is tilted slightly forward you are indeed - well looked after. By pulling a small plunger on the socket of the third leg you can use any one of four holes to adjust the seat from the horizontal to an angle of 6 degrees.

I've got a very large bass - will it fit onto the Trolley?

Yes - absolutely no problem at all. When your instrument is positioned on the trolley - its upper shoulder should be supported by the padded upper-bar. By squeezing the two 'taps' on the central bar with one hand and lifting the handle with the other the height of the trolley can be perfectly adjusted to the length of your instrument from no less than twelve height possibilities.

Where can I use the trolley?

The trolley features two chunky pneumatic tires fitted on large futuristic looking wheels. With the air-pressure adjusted by means of the pump (supplied) - shock absorption can be maximized and you'll be able to roll your instrument tirelessly along over both smooth and bumpy surfaces alike. Even steps and curbs can be negotiated with ease.

Has the Double Trolley been well tested?

Yes - the Double Trolley has been vigorously tested by the independent Danish Technological Institute who found that the support/stool meets the requirements of ISO 7173, level 3 - a rating awarded to products that are suitable for severe domestic/light industrial usage. In terms of actual road testing - the Double Trolley as a stool has been used through hundreds of concerts and through many long hours of rehearsals while the Double Trolley as a trolley with instrument attached - has been extensively tested in places such as - to name a few - the London underground, on the trains in Germany and on the roads in Denmark. At all times the Double Trolley tackled every situation with the utmost of ease.

Can I try a Double Trolley out before I buy one?

Yes - we have a demonstration model in the Shoppe that we would be more than pleased to show you. The coffee pot is always on.

Tony with boxes of double trolleysHow is the stool delivered?

It will come flat packed in its own specially made double-walled box and accompanied by a 13 page 'Assembly and use of the Double Trolley' guide. The manual is clearly worded and well illustrated and should get you up and rolling along in a maximum of 10 minutes. Marc Grue - inventor of the Double Trolley and General Manager of Double Design comments, "The only things to do is mount the wheels to the wheel piece and inflate the wheels - and you're done. Of course it can take a little longer to read the whole manual - which the user should definitely do in order to use the Double Trolley correctly. But the assembly itself should only take a few minutes."

Are there any guarantees?

Yes. The high standard of quality is reflected in the fact that the manufacture provides a one-year guarantee on material and workmanship defects under normal use. In order not to breach the warranty it is recommended that you familiarise yourself with the notice - 'Conditions of delivery of the Double Trolley' - that accompanies the product and to which you agree by purchasing the product. The eight sections deal with the usual small print disclaimers and liability issues but with a first section that lists the precautions that must be followed when using the trolley. These seem entirely reasonable and if followed to the letter should ensure that you are rewarded with a happy and trouble free relationship with your Double Trolley.

Are there any player endorsements?

Yes, Danish jazz legend Niels-Henning Orsted Pedersen [1946-2005] is pictured using the trolley on the front of the Double Design advertising flyer with the comment "The Double Trolley is an ingenious initiative. At once it solves the two major problems for all bass players: It eases transportation and at the same time delivers the best stool I have ever sat on." Click here for letters of recommendation related to the double bass trolley.

I hear that from first idea to full production has taken no less than fourteen years. Is that correct?

Yes that's right - Marc Grue - designer of the Double Trolley - has shown real vision, commitment and determination in bringing this fabulous piece of equipment to the market. The story is an epic and dates back to 1992 when Marc - who at the time was studding bass in Aarhus, Denmark - welded his first prototype together. Each summer thereafter he welded improved models until in 1997 he started the first small scale production in Denmark. Production costs in Denmark proved prohibitively high and so in 2004 Marc started negotiations with a Swedish company to take the production over to China. It wasn't until 2006 after eight production prototypes had been made that full-scale production could commence.

Final Verdict:

This Double Trolley - is sure to be a big, big hit with bass players right around the world for it makes the job of moving an instrument and stool about both comfortable and convenient. When in use this highly manoeuvrable trolley offers protection to the instrument and of course to the user - the benefit of not having to strain or damage ones back through lifting a gross weight via case handles or with a shoulder strap is obvious. We particularly like the fact that the Double Trolley can easily be rolled along using just one hand and with regard to its construction the fact that the aluminium components are incredibly strong yet amazingly light. We also love the space saving compact design, the smooth black finish that oozes quality and the high quality lock system that inspires confidence.

View on Pricing:

In our opinion - the unprecedented, uncompromising levels of thought and effort that have been expended on the design and manufacturing quality of this product really aren't reflected in the price.

In more simple words - we boffins at The Contrabass Shoppe think that the Double Trolley is an absolute bargain.

Final Words:

Praise at the very highest level has to be awarded to Marc Grue for his trolley-stool transformer really is a masterpiece of design and engineering and congratulation to all those of you who decide to purchase the Double Trolley for it is a product that is certain to enhance the quality of your bass playing days.

Stats:

Weight
Seat: 1.00kg
Stool piece: 2.60kg
Wheel piece: 3.00kg
Total: 6.60kg

Measurements (Max)
Height of trolley folded: 69.5cm
Height of trolley fully extended (locked): 102.0cm
Width at wheels: 46.5cm
Width at handle: 27.5cm
Diameter of wheels: 30.0cm

Seat Measurements (Max)
Length from back to front: 22.0cm
Width across from left-right: 35.0cm
Depth: 9.0cm (ave)
Depth inc fixing bracket: 14.5cm

Height range of seat from floor
Highest: 94.0cm
Lowest: 61.5cm
No of positions: 13 in increments of 2.5cm

Unfolded measurements of Stool
Distance rear foot splays from front: 32.1cm

Boxed Stats
Measurements: 62.0cm x 33.0cm x 28.0cm
Weight: 9.0kg

Double Trolley Price: UK£340-00 - Convert price with XE.com Personal Currency Assistant

Shipping Cost - UK mainland: UK£14-00

All other destinations: please ask for a quote.

Buy Now

Double Trolley as Trolley

Double Trolley as Stool

Double Trolley as Trolley Double Trolley as Stool

Double Trolley in pieces

Double Trolley with Double Bass

Double Trolley in pieces Double Trolley with Double Bass
Contrabass Shoppe footer Click here to review some of the instruments previously sold by The Contrabass Shoppe Click here for our range of Budget Double Basses up to UK £5000 Click here for our quality Double Basses up to UK£20,000 Click here for our highest quality Double Basses over UK£20,000 Click here for our quality Double Bass Bows Click here for our quality Double Bass Accessories Click here for our range of Double Bass specialist Books Click here for the web site introduction Click here to discover more about The Contrabass Shoppe Click here for the outstanding Double Bass Gallery Click here to discover our articles in relation to the Double Bass Click here for more information on our restoration work Click here to make contact with us Click here to make contact with us Click here to email us.