electric blower 12 volt but witch is the best to convert please

[Ron HancockParticipant @ronhancock63652]

I want to make a blower from a car blower can anyone tell me the from what car is the best to use.

I have a blower i bought from show but its very weak i need one with a lot more humph.

I have noticed most seen to prefer car rather than the small ones you can buy for the job

Thanks Ron

[Ron HancockParticipant @ronhancock63652]

[JasonBModerator @jasonb]

I think most use ex MOD blowers, also watch you don't have too much humph as too quick a heat up is not good for the engine

[Harry WilkesParticipant @harrywilkes58467]

I've not tried it myself but the back end of last year I saw I chap using a 'blower' on a 4" Garrett it was one of those 12v fan's used to blow up air mattress, the chap had it inserted at 45 deg's into a chimney extension. It seemed to work quite well providing just enough draft to pull the fire. I have also seen one of those MOD type again at 45 deg's on a chimmey.

H

[duncan webster 1Participant @duncanwebster1]

Those ex ministry ones are meant to work on 24v. On 12v I find mine pretty useless, so I bought a 12-24 v converter from Hong Kong which made it a lot better

[Ron HancockParticipant @ronhancock63652]

Mine is an ex military one useless plus when you have others steaming on the Bay's mine will not pull the fire up.

It will at home when I connect to battery charger but still feels very weak.

Thanks Ron

[john fletcher 1Participant @johnfletcher1]

I don't know where you are going to work your blower, but if its a 12 volt motor give it a few more volt,if it needs more humph. Most of these small motor will easily run on 24 without to much stress as you are only going to run the thing for a few minutes. We had a 12 volt car dynamo running as a motor on 24 volts for years, lifting things out of a tank of paraffin, long before H&S. Not being a steam man I suggest you notice what JasonB above has to say and let every thing expand slowly. John

[Dennis RaynerParticipant @dennisrayner52782]

I've got a 24v blower which I power from my 18v cordless drill battery. Works for ne.

[Chris GunnParticipant @chrisgunn36534]

Ron, I just scrounged a U/S fan from the guy that serviced our heating, my CH boiler has a fan exhaust as many do, and these fail after 7or 8 years, this is the third new one on my boiler. The fan motor was gone but the fan was OK. this is a steel fan in a steel housing so can take the heat. It is simple to remove the old motor and fit a 12/24v motor of your choice. You will need a adaptor, also easy to make. I suggest you make friends with a gas service engineer or go on the scrounge round the local service place.

Chris Gunn

[nigel jones 5Participant @nigeljones5]

I bought one of the ex military cooling fans recently along with a 7.2ah 12v gel battery – it blows plenty strong for me and has a roaring fire in 10 minutes on my 71/4 invicta. I posted a question regarding how much heat they can withstand as the get very hot drawing the gasses through.

[Harry WilkesParticipant @harrywilkes58467]

Posted by Chris Gunn on 12/04/2016 16:28:15:

Ron, I just scrounged a U/S fan from the guy that serviced our heating, my CH boiler has a fan exhaust as many do, and these fail after 7or 8 years, this is the third new one on my boiler. The fan motor was gone but the fan was OK. this is a steel fan in a steel housing so can take the heat. It is simple to remove the old motor and fit a 12/24v motor of your choice. You will need a adaptor, also easy to make. I suggest you make friends with a gas service engineer or go on the scrounge round the local service place.

Chris Gunn

Did just the same thing fitting the fan with a 12v 'smiths' motor it's very powerful and I have to use speed control unit so that I don't raise steam to quickly, the only other drawback it that it's quite large !

H

[MichaelRParticipant @michaelr]

I use a 12volt car heater motor got from a car scrap yard, I have a rheostat wired in to vary the speed.

Mike.

[Ron HancockParticipant @ronhancock63652]

Thanks for all suggestions our supply on steaming bays are very weak. If two or three Running they nearly come to a stop. My Black 5 seems to take a long time to get to 30 psi. It's a 5 inch with large boiler. It may be me being a novice. Going to take to club tomorrow for steam test fingers crossed.

Ron

[julian atkinsParticipant @julianatkins58923]

Hi Ron,

I also have ex WD 24 volt blowers, but the club tracks Ive been a member of have both 12V and 24V supply.

At home on my test track in the garden I have only 12V supply. The blowers are a bit slow as a result.

With a silver soldered copper boiler there is no reason whatsoever why the boiler should not be brought from cold to working pressure in 5-7 minutes IMHO.

A compressor fed blower is used in many clubs eg the SMLS BeechHurst club, and also the Cardiff club.

Cheers,

Julian

[BazyleParticipant @bazyle]

Arrange a variable bypass hole between the fan and chimney to reduce the blast and the cold air also reduces the temperature.

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