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+--- Thread: Coil fan size (/showthread.php?tid=9745)
Coil fan size - Howard Wright - 03-12-2024
Hi All
Just sorting out a two blade fan ready to put on my van which with the recored radiator runs quite cool!
I found two in my spares shed but was surprised to find they were slightly different by about 3/16” in depth. Did Austin make two sizes of fan or is one a reproduction part. Just curious.
Cheers
Howard
RE: Coil fan size - Steve Jones - 03-12-2024
Has the shorter one had its length trimmed because of damage at some time? It seems to have ends that are more 'square' than the longer one.
Steve
RE: Coil fan size - Howard Wright - 03-12-2024
(Yesterday, 12:08 PM)Steve Jones Wrote: Has the shorter one had its length trimmed because of damage at some time? It seems to have ends that are more 'square' than the longer one.
Steve
Hi Steve,
Sorry that is a trick of the camera as both are pretty much identical apart from the depth. The deeper one has no markings, whilst the shallow one has 1A 253 in raised letters on the nose. Which leads me to believe that the former is reproduction and the latter is genuine Austin.
The only possible effect of using the thicker one is that it will be very slightly closer to the radiator!
Cheers
Howard
RE: Coil fan size - John Cornforth - 03-12-2024
Hi
I don't think that a small change in length will have any noticeable effect. However, the fan turns quite fast (faster than the crankshaft) so it's worth checking that it's reasonably well balanced. If necessary file off the heavy end, a bit like doing a lawnmower blade.
RE: Coil fan size - Howard Wright - 03-12-2024
Hi John
Sorry to confuse but it’s not the length of fan blade but the depth of the nose that is different.
Cheers
Howard
RE: Coil fan size - Ruairidh Dunford - 03-12-2024
There are a number of different fan castings for the coil engines.
RE: Coil fan size - Howard Wright - 04-12-2024
Thanks Ruaridh
Howard