daverclasper Posted November 1, 2018 Report Share Posted November 1, 2018 Hi, Does fitting one of these liberate much BHP. Just read my new courier and some one fitted one to a Spit and had 10 more BHP!, compared with the metal fan. Even if this result was at the crank it seems surprising I thought. Thanks, Dave Link to comment Share on other sites More sharing options...
dougbgt6 Posted November 1, 2018 Report Share Posted November 1, 2018 Hmm. Blimey, how much does the metal fan weigh?!! db Link to comment Share on other sites More sharing options...
Nick Jones Posted November 1, 2018 Report Share Posted November 1, 2018 Normally 3 - 4 bhp quoted between fan/no fan, but only at high rpm. Doubt there is memory than 1 or 2 bhp between metal and plastic. Nick Link to comment Share on other sites More sharing options...
johny Posted November 1, 2018 Report Share Posted November 1, 2018 cant see it as I assume they changed the fan for better cooling and if that was achieved then more air must have moved. Moving more air means more load on the engine so absorbing more power not less. The weight reduction would only affect the acceleration of the engine and hence the car not the HP and then the difference would be minimal.... Link to comment Share on other sites More sharing options...
Pete Lewis Posted November 2, 2018 Report Share Posted November 2, 2018 Main advantage of the 7 blade plastic fan is its so much quieter And unlike the metal fan does not need the balancing weights fitted in the fan hub If a plastic blade flies off its safer a metal blade can break through the bonnet Pete Link to comment Share on other sites More sharing options...
johny Posted November 2, 2018 Report Share Posted November 2, 2018 I suppose cost also came into the decision back in the day - the plastic jobbies must have been so much cheaper although I bet they werent originally made in China? Link to comment Share on other sites More sharing options...
JohnD Posted November 2, 2018 Report Share Posted November 2, 2018 43 minutes ago, johny said: I suppose cost also came into the decision back in the day - the plastic jobbies must have been so much cheaper although I bet they werent originally made in China? I very, very, very much doubt it. I don't know when Triumph introduced the plastic fan, but China around 1960 was just beginning the Cultural Revolution. The Great Leap Forward had concentrated on heavy industry, producing pig iron in villages and ruining agriculture, leading to the Great Famine that killed as many as 40 Million people. This failure meant that a new revolutionary movement was necessary, hence the CR, the Litttle Red Book, Red Guards etc etc. Even if it was capable, China had far too many problems to think about making goods for Imperialist running dogs! Japan is possible, but we did not have a global industrial transport system in those days. Raw materials and complete products would be exported/imported, but parts would be sourced from local or national suppliers, not from halfway around the world! History and a knowledge of history, are so important. "Those who do not know history's mistakes are doomed to repeat them." John Link to comment Share on other sites More sharing options...
dougbgt6 Posted November 2, 2018 Report Share Posted November 2, 2018 So, they're probably genuine British plastic fans?!! Marvelous. Who'd have though back then that the most dangerous thing for the environment on our cars would turn out to be the plastic fan! Doug Link to comment Share on other sites More sharing options...
johny Posted November 2, 2018 Report Share Posted November 2, 2018 18 minutes ago, JohnD said: I very, very, very much doubt it. I don't know when Triumph introduced the plastic fan, but China around 1960 was just beginning the Cultural Revolution. The Great Leap Forward had concentrated on heavy industry, producing pig iron in villages and ruining agriculture, leading to the Great Famine that killed as many as 40 Million people. This failure meant that a new revolutionary movement was necessary, hence the CR, the Litttle Red Book, Red Guards etc etc. Even if it was capable, China had far too many problems to think about making goods for Imperialist running dogs! Japan is possible, but we did not have a global industrial transport system in those days. Raw materials and complete products would be exported/imported, but parts would be sourced from local or national suppliers, not from halfway around the world! History and a knowledge of history, are so important. "Those who do not know history's mistakes are doomed to repeat them." John Reading the post is also very important. "Those who dont read correctly the posts are doomed to make mistakes"? 2 Link to comment Share on other sites More sharing options...
Pete Lewis Posted November 2, 2018 Report Share Posted November 2, 2018 metal fans back in truck days of the late 70s was obviously much bigger than car fans most had rubber damped hubs to loose some diesel unsypathetic vibrations from the crank and developement took on a new direction when we had some fail with blades letting go and exit the truck through the cab floor and some out through the roof nasty things not to be messed with, the metal triumph fans on mk1 and mk2 Vit /GT6 did have a balance weight in the hub with a 2 pin hole location to re align if it got removed part no. 107858 balance and bush 108496 Pete Link to comment Share on other sites More sharing options...
dave.vitesse Posted November 2, 2018 Report Share Posted November 2, 2018 I doubt if there is much difference between the metal or the plastic fans in the BHP they consumed. The plastic weights less and should give better cooling. Dave Link to comment Share on other sites More sharing options...
johny Posted November 2, 2018 Report Share Posted November 2, 2018 Best go electric, he says opening the can of worms? Link to comment Share on other sites More sharing options...
Pete Lewis Posted November 2, 2018 Report Share Posted November 2, 2018 what ever you use the power is derived from the fuel tank many electric have much less CFM of the engine driven and above 30mph the air ram is helping the fan so ...you might gain a odd horse !!!!! just some waffle Pete Link to comment Share on other sites More sharing options...
dave.vitesse Posted November 2, 2018 Report Share Posted November 2, 2018 The main advantage with an electric fan is it only comes on when cooling is required. Hence, the engine will warm up more quickly and there should be less over cooling in the winter months. Though as Pete said the ram effect keeps it turning even when it's not powered. (Feather the prop) Maybe used it to charge the battery. The disadvantage with the electric is if it goes wrong in the summer the engine may over heat. Dave Link to comment Share on other sites More sharing options...
rlubikey Posted November 2, 2018 Report Share Posted November 2, 2018 A more efficient fan does less stirring and more pumping of the air. Still only gives a very few hp - 2hp as Nick suggests sounds reasonable. However, pumping more air keeps the under-bonnet cooler, so maybe a few more hp gained there? How was the power tested - this is what we need to know! (Must have missed this article as I read the club comic last night) Cheers, Richard Link to comment Share on other sites More sharing options...
NonMember Posted November 2, 2018 Report Share Posted November 2, 2018 12 minutes ago, dave.vitesse said: Though as Pete said the ram effect keeps it turning even when it's not powered. (Feather the prop) Maybe used it to charge the battery. When I worked for Rover, we had a request from vehicle electrical to turn the fan on at high vehicle speed. As we didn't have a vehicle speed sensor on that model, we asked them to explain the reason, what with it seeming rather odd. Apparently, at the car's maximum speed, the fan they used was blown round by the air flow so fast that it exceeded its rated maximum. If we turned it on, the motor would attempt to charge the battery and the electrical load would slow the fan back down to within its design limits. 1 Link to comment Share on other sites More sharing options...
Pete Lewis Posted November 2, 2018 Report Share Posted November 2, 2018 Similar with our Commer Walkthru when it changed to a permanent magnet heat fan you could turn the ignition off and the heater fan generated enough to keep it running ....almost a hybrid !!! 1 Link to comment Share on other sites More sharing options...
daverclasper Posted November 2, 2018 Author Report Share Posted November 2, 2018 Wasn't an article about this. Just a sentence or two included in something else. Sorry, can't remember. Link to comment Share on other sites More sharing options...
Colin Lindsay Posted November 3, 2018 Report Share Posted November 3, 2018 On 02/11/2018 at 09:29, JohnD said: History and a knowledge of history, are so important. "Those who do not know history's mistakes are doomed to repeat them." John History is becoming propaganda in so many things, and in many cases can no longer be relied upon to reflect accurately the events reported. Think of the phrase: when I do well, no-one remembers; when I make mistakes, it's trotted out again, and again... and again.... Link to comment Share on other sites More sharing options...
JohnD Posted November 3, 2018 Report Share Posted November 3, 2018 We live through an era that history may mark as having made more mistakes than 1910s imperialism, 1930s appeasement, and many more than 1960s Cold War, that skirted Armagheddon so many times. Not least, Brexit and the rise of nationalism that may destroy the European Union, whose whole original purpose was to prevent the first two being repeated, an example of learning from history, that we are losing fast. Sorry, thread diversion, but IT'S IMPORTANT! John 2 Link to comment Share on other sites More sharing options...
daverclasper Posted November 3, 2018 Author Report Share Posted November 3, 2018 (edited) I know. Hate crimes on Muslims in UK reportedly up by 40% in last 12 months. There must be much more stuff, for eg, abuse in the street, that's not reported. Awful. Dave Edited November 3, 2018 by daverclasper 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