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| Dowty Fan https://ausmini.com/forums/viewtopic.php?f=2&t=97674 |
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| Author: | Stibbsy [ Tue Aug 21, 2018 10:41 am ] |
| Post subject: | Dowty Fan |
Has anyone seen or got on of these fans? They were 4 blade, variable pitch. Supposed to increase hp by marginal amount. |
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| Author: | Harley [ Tue Aug 21, 2018 12:02 pm ] |
| Post subject: | Re: Dowty Fan |
Here’s one for the engineers- if it increases power (presumably measured at wheels) does that mean its not cooling the engine as well as the original fan would? |
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| Author: | timmy201 [ Tue Aug 21, 2018 12:13 pm ] |
| Post subject: | Re: Dowty Fan |
The Dowty sucked less power at higher RPM as it reduced the angle of the fan blades. From:http://mk1-performance-conversions.co.uk/a_light_read.html Attachment: Dowty.JPG I wonder if any newer clutch style fans would be compatible with the mini? |
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| Author: | simon k [ Tue Aug 21, 2018 12:20 pm ] |
| Post subject: | Re: Dowty Fan |
Harley wrote: Here’s one for the engineers- if it increases power (presumably measured at wheels) does that mean its not cooling the engine as well as the original fan would? yes, but at speed the fan gets in the way of airflow through the radiator - fan is only effective at low speed or when stopped |
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| Author: | FNQ [ Tue Aug 21, 2018 6:18 pm ] |
| Post subject: | Re: Dowty Fan |
if it runs off the belt the same as other mech fans , i can't see it living up to measureable gains. IF you want to decrease power losses, then go electric - but have good coolant warning systems as well - pulley and fan old fashioned, quite effective and remarkably reliable - mostly good things unless you need to go for ultimate last percentage of power. - ( i think i saw something like 2-4 hp on an engine bigger than ours - but cant exactly recall. - just my take on wringing out horsepower |
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| Author: | Stibbsy [ Tue Aug 21, 2018 7:32 pm ] |
| Post subject: | Re: Dowty Fan |
I had one on my first car, a hotted 1100 motor. From what I remember, it wasn't to great at idle, but always run cool at speed. |
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