• Hey Guest!
    British Car Forum has been supporting enthusiasts for over 25 years by providing a great place to share our love for British cars. You can support our efforts by upgrading your membership for less than the dues of most car clubs. There are some perks with a member upgrade!

    **Upgrade Now**
    (PS: Upgraded members don't see this banner, nor will you see the Google ads that appear on the site.)
Tips
Tips

Heater fan curiosity

5

57_BN4

Guest
Guest
Offline
Has anyone else noticed that the fan basket fins appear to be bent the wrong way? I.E. for clockwise rotation the outer edges are turned into the direction of rotation.

DSC06158.JPG


I noticed this first on my Zephyr heater as it uses the same fan/motor and thought I'd 'improve' it by flattening and bending all the blades backwards by about 60deg so that the inner edge was scooping the air better. The demister now works...

Why would they design it so strangely I wondered and so checked out the patent number stamped in the base of the basket metal. https://www.freepatentsonline.com/2231062.pdf Looks more like a manufacturing economy than any consideration of how much air it could/does flow. As the fan is made by Torrington Mfg Co I'm guessing Smiths imported them from US and assembled in UK.

Am I obsessing again?
 
Back
Top