anthonym Posted June 11 Share Posted June 11 Anyone know? Largest Radiator Fan for Caterham BDR? probably from CBS Anthony Link to comment Share on other sites More sharing options...
SM25T Posted June 11 Share Posted June 11 See WhatsApp group Link to comment Share on other sites More sharing options...
anthonym Posted June 23 Author Share Posted June 23 (edited) Yes. Question is now how to choose biggest fan size when radiator dimensions are available. Also whether there are significant cooling properties as between different brands, starting with Carbuilder. I am very happy to note that for the first time in 20 odd years my BDR cooling system with overflow (not sealed expansion system) now works as designed. For this record it seems having upgraded to a multipass radiator is now the only issue that below 40mph their is insufficient airflow and the present 10 » fan is unable to provide enough to cool more than one row. Edited June 23 by anthonym Link to comment Share on other sites More sharing options...
Nigel Blandin Posted June 23 Share Posted June 23 I have a radtech rad in mine with a fan supplied by them. I’ll measure it tomorrow if you like. Link to comment Share on other sites More sharing options...
anthonym Posted June 23 Author Share Posted June 23 (edited) Thanks nigel that could be interesting - any idea the airflow property of it? I know one R500 has a 16" fan so I suppose if the nose cone dimension has not changed bewteen my 1987 BDR and the late 1990s R500 K it should also fit. Bigger the better to feed my three row radiator when iunder 40mph. edit: I found this https://www.radtec.co.uk/shop/spal-fans/spal/11-va09-ap8c-54s/ seems they fit up to 11" so unless yours is bigger you can relax with my thanks. edit2 in fact no need to do anything as I have now ordered a 14" fan from CBS https://www.carbuilder.com/uk/14-electric-cooling-fan Thanks for being willing 🙂 Anthony p.s. I am now told my rad is also a Radtech Extreme but with my old fan. Edited June 24 by anthonym Link to comment Share on other sites More sharing options...
Nigel Blandin Posted June 28 Share Posted June 28 Sorry for the delay! Mine is 300mm diameter, it came with the Radtech rad and works perfectly. Link to comment Share on other sites More sharing options...
anthonym Posted July 2 Author Share Posted July 2 (edited) thanks is that an 11 inch fan? Edited July 2 by anthonym Link to comment Share on other sites More sharing options...
Nigel Blandin Posted July 3 Share Posted July 3 Just under 12. Works a treat. You’ve still got to original cooling system haven’t you, with the thermostat housing overflow to the unpressurised header tank? Link to comment Share on other sites More sharing options...
anthonym Posted July 3 Author Share Posted July 3 yes exactly and it now works perfectly; which took me a loong time, replacing most of the components.the unpressurised bottle is of course under management by mother nature's atmospheric pressure. Just fasciinates me how they did things so effectively before expansion tanks came along. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now