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Re: Which blower?

Posted By: john anderson
Date: Sunday, 2 March 2008, at 4:26 p.m.

In Response To: Which blower? (James1095)

Are you sure the regen even puts out 2psi? This is usually a the upper end of larger regens (2hp+). A BMT-7 and a handtorch are very small loads with regards to an air blower. Get a linear-piston air pump, like used for fish ponds. Medo is a good brand - there are others too. For around 100 watts this will easily power your BMT-7 and a hand-torch, and be far quieter than a regen or spa pump.

Spa blowers work, but as you mention they are noisy. They also usually have brush-motors, and a short life between service. Similar to using a shop-vac for your air-supply.

> After trying a few air sources I had on hand
> with some success, I decided I'd like to get
> a more appropriate source for my fires. This
> needs to run a BMT7 crossfire and a hand
> torch, eventually I'll build a ribbon fire
> but that will be self contained. This is for
> hobby use so not nearly as many hours will
> go on it as at a production shop.

> There's two options I'm considering so far.
> One is a small regenerative blower for $160,
> at 2psi it's not as powerful as the ones a
> lot of shops use but the price is right and
> it comes recommended by at least one guy.

> The other is a spa blower, I can pick one up
> for about 80 bucks which on paper looks a
> bit better but they scream like a vacuum
> cleaner and since they have series wound
> universal motors, the lifespan is more
> limited.

> Thoughts? I'm leaning towards the regen,
> partly for the "cool factor" as
> it's something I've never played with
> before. On the other hand, if I get the spa
> blower and it isn't suitable, at least I've
> got a spare for the one in my hot tub which
> I've resurrected and rebuilt from a sorry
> state more than once.

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