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Author Topic: Sourcing a DC25 Brush Bar Motor  (Read 10096 times)

Offline Dyson Tech

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Sourcing a DC25 Brush Bar Motor
« on: June 18, 2011, 12:37:56 AM »
The DC25 brush bar motor is one of those parts that Dyson do not make available on its own (even to the trade). They make the one for the DC24 available (albeit usually on backorder), but for the DC25 one, they force you to buy a full cleaner head that runs to over 70.

Thankfully, they do not fail as often as the DC24 one. We get many phone calls and emails asking us if the DC24 one is the same as the DC25 one. They are not - they differ.

This is a DC25 brush bar motor:



This is a DC24 brush bar motor:



As you can see, they are totally different.

We haven't found anyone yet to supply us with these motors. This is not a Dyson manufactured part; a company makes them. It is likely that they make it for other applications too. Does anyone know where to get them or what else they are used for?

Here are the numbers from one I took out today:

Quote
Johnson
DC771(2)XLLG
240 DC
505022000841
1D70075 CL.B

3K1362

If anyone can shed any further light on these motors, it would be much appreciated.  :thumbsup:

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Offline Vacuum Cleaner House

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Re: Sourcing a DC25 Brush Bar Motor
« Reply #1 on: June 19, 2011, 02:53:03 PM »
Unfortunately Johnson is one of those companies that produce motors for the customers specific needs.
Their motors are used in everything from vacuums ( Dyson & Bissel to name a few ) to garden tools & powertools

We tried to get a motor from them that is used in a bissel but they will only sell the Motors to the supplier that they were designed for
Owner of Vacuum Cleaner House, Full service vacuum shop in Cape Town South Africa

Offline Bendini

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Re: Sourcing a DC25 Brush Bar Motor
« Reply #2 on: December 22, 2011, 10:43:11 PM »
Hi there

As you rightly say the DC24 brush bar motor is completely different to the DC25 one. However, applying the Johnson part number for the DC25 to various searches it appears to be very similar to the DC15/DC18 motor. It looks physically very similar as well. Is the DC15 one 240V DC and if so is the pinion/gearing the same or can the DC15 type be made to fit because these are available?

Anybody got any ideas?

Online MVacs

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Re: Sourcing a DC25 Brush Bar Motor
« Reply #3 on: December 23, 2011, 12:10:07 AM »
Welcome to the site Bendini.  :tiphat:

This is something we have been looking at recently. Indeed, on Angus's blog site, there was this comment from a chap:

Quote
This motor is available from dyson as the brushbar drive for a DC18. It comes with a removable gearbox which can be swapped for the belt cog here. It’s about 35 + postage

Angus replied:

Quote
That’s not strictly correct Mark. Whilst the DC18 and the DC15 have the same DC771(2)XLLG motor as the DC25, the top cog differs on other applications.
If you look at the photo above, you will see that the cog on the DC25 motor has teeth that are at 90 degrees to the motor. On other applications, the motor drives a gearbox so an oblique direction of the teeth is used maximise torque. That means one wont fit the other.
We haven’t yet figured out a way to change the cog so one version can be used with the other without stripping the motor down to swap the main shaft. To do that is so labour intensive that you may as well buy a complete cleaner head.
If you know different, please enlighten us.

A few days ago, we had a scrap DC18 brush roll motor from a customers machine, so we stripped it down as the numbers are indeed the same on the side of the unit. We took off the gearbox and looked at the cog. The teeth do run different. As they do on the DC15. We were hoping to find a back-door fix to the non-availability of the DC25 brush roll motor.

Swapping the motor shaft is well beyond the average guy who might strip his cleaner head down. Even our tech pulled this face  :sick0012:  when I asked him about it. We even tried a bearing puller to get the angled cog from the shaft on the DC18 one with the hope of swapping it with the DC25 one - but no joy. It didn't budge.  :(

I am all ears if we can find a fix for this. I think it is a bit pants that Dyson refuse to make available the DC25 brush roll motor. We sell loads of DC25 cleaner head units, and being a Dyson only part, we make almost nothing on them (especially not after six quid to send one). I would rather help people find a more cost effective solution if at all possible. We managed to do that with DC05 and DC08 Matsushita/Panasonic-to-YDK motor conversions that we pioneered.

There is an official distributor of Johnson motors just a few miles from our shop. I am going to call in there in January with the one we want, and see if they can help out. I am doubtful though, as I expect Dyson have them tied to a non-supply-to-others agreement. You can buy the basic motor - sans cog - on its own though; it looks like this:



But how on earth do you swap that cog?

Anyone else reading this who has any thoughts or experience on this subject, please chime in. Lets chew this over and find a fix.  :icon_nod:

Online MVacs

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Re: Sourcing a DC25 Brush Bar Motor
« Reply #4 on: August 25, 2013, 01:39:40 AM »
This is an old topic, but for the purposes of completeness, we now have these motors >>here<< and the fitting tutorial is located >>here<<.


 

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