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  #1  
Old 11th November 2017, 05:40 PM
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Default Is a radiator fan needed on a track/race bike?

Does a track/race bike need a radiator fan on it,if a larger race radiator kit is being fitted?

Only water will be used in it (no coolant),so will that mean that the bike will run hotter?

Thanks.
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  #2  
Old 11th November 2017, 05:47 PM
johnny b johnny b is online now
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Default Re: Is a radiator fan needed on a track/race bike?

Yes it will run slightly hotter and you cant leave water in it over winter in case it freezes.

You dont need a fan unless you plan on stopping in traffic....

Some keep them on just to help cool down after a race but most chuck them.

Did you buy a race bike??????
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  #3  
Old 11th November 2017, 05:54 PM
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Default Re: Is a radiator fan needed on a track/race bike?

Originally Posted by johnny b
Yes it will run slightly hotter and you cant leave water in it over winter in case it freezes.

You dont need a fan unless you plan on stopping in traffic....

Some keep them on just to help cool down after a race but most chuck them.

Did you buy a race bike??????
Thankyoiu for the info there.
Im just trying to get my head around it all,as I want and need to learn alot of stuff.
Water Wetter was mentioned to me by a certain shop,is that allowed with regards to track rules?
And what does it actually do for cooling a bike?
Thanks.
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  #4  
Old 11th November 2017, 05:54 PM
kwackquack kwackquack is offline
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Default Re: Is a radiator fan needed on a track/race bike?

Put a fan on one and no fan on the other one and what works best for you
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  #5  
Old 11th November 2017, 06:02 PM
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Default Re: Is a radiator fan needed on a track/race bike?

Originally Posted by kwackquack
Put a fan on one and no fan on the other one and what works best for you
Ah here................
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  #6  
Old 11th November 2017, 06:03 PM
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Default Re: Is a radiator fan needed on a track/race bike?

Originally Posted by Japcati
Only water will be used in it (no coolant),so will that mean that the bike will run hotter?
Originally Posted by johnny b
Yes it will run slightly hotter
No, it'll run cooler.

You shouldn't need a fan.
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  #7  
Old 11th November 2017, 06:05 PM
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Japcati Japcati is offline
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Default Re: Is a radiator fan needed on a track/race bike?

Originally Posted by Gixxer
No, it'll run cooler.

You shouldn't need a fan.
Thankyou.
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  #8  
Old 11th November 2017, 06:12 PM
faz1 faz1 is offline
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Default Re: Is a radiator fan needed on a track/race bike?

Yes it will run slightly cooler with 100% water as the addition of glycol actually reduces the specific heat capacity of water and although the density of say an 85/15 water glycol solution does increase, it is negligible. I'd be draining the water for the winter though!
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  #9  
Old 11th November 2017, 06:15 PM
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Default Re: Is a radiator fan needed on a track/race bike?

Originally Posted by faz1
Yes it will run slightly cooler with 100% water as the addition of glycol actually reduces the specific heat capacity of water and although the density of say an 85/15 water glycol solution does increase, it is negligible. I'd be draining the water for the winter though!
Well Im now learning new things.
Thanks for that.
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  #10  
Old 11th November 2017, 06:18 PM
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Default Re: Is a radiator fan needed on a track/race bike?

With regards winter storage......

Do you drain the radiator system completely of water?

Or do you put in a bottle of coolant and run it a few times over the winter?



Am I right in thinking its to prevent the cold weather cracking seals and water pump seals?
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  #11  
Old 11th November 2017, 06:19 PM
acdc acdc is offline
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Default Re: Is a radiator fan needed on a track/race bike?

id say some lad has hijacked his account our Japcati would never just prefer one rad when he could have 2
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  #12  
Old 11th November 2017, 06:23 PM
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Gixxer Gixxer is offline
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Default Re: Is a radiator fan needed on a track/race bike?

Originally Posted by Japcati
With regards winter storage......

Do you drain the radiator system completely of water?

Or do you put in a bottle of coolant and run it a few times over the winter?



Am I right in thinking its to prevent the cold weather cracking seals and water pump seals?
It'll do more than crack seals. Freezing water will easily burst an engine block open.

Either drain it completely or add anti-freeze
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  #13  
Old 11th November 2017, 06:25 PM
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Japcati Japcati is offline
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Default Re: Is a radiator fan needed on a track/race bike?

Originally Posted by Gixxer
It'll do more than crack seals. Freezing water will easily burst an engine block open.

Either drain it completely or add anti-freeze
Again,thankyou.

Id rather find out here now,than find out the hard way in say a month or 2 months time.
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  #14  
Old 11th November 2017, 06:26 PM
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Default Re: Is a radiator fan needed on a track/race bike?

Originally Posted by acdc
id say some lad has hijacked his account our Japcati would never just prefer one rad when he could have 2
Well you aint gonna believe this,but............................
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  #15  
Old 13th November 2017, 04:08 PM
padraic2271 padraic2271 is offline
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Default Re: Is a radiator fan needed on a track/race bike?

Be careful if you are going to Cartagena next year with just water in your cooling system, the truck bringing the bikes over can encounter below freezing temps around South France/ North Spain around that time of year. A burst cylinder would really spoil the trip!
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  #16  
Old 14th November 2017, 01:22 AM
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Japcati Japcati is offline
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Default Re: Is a radiator fan needed on a track/race bike?

Originally Posted by padraic2271
Be careful if you are going to Cartagena next year with just water in your cooling system, the truck bringing the bikes over can encounter below freezing temps around South France/ North Spain around that time of year. A burst cylinder would really spoil the trip!
Thanks for that.
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  #17  
Old 14th November 2017, 03:14 AM
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Dusty Rhodes Dusty Rhodes is offline
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Default Re: Is a radiator fan needed on a track/race bike?

And dont forget your hair gel and gel battery
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  #18  
Old 14th November 2017, 11:19 AM
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Default Re: Is a radiator fan needed on a track/race bike?

Originally Posted by Dusty Rhodes
And dont forget your hair gel and gel battery
Only the best for me.....
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  #19  
Old 15th November 2017, 08:30 PM
fabiostar fabiostar is offline
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Default Re: Is a radiator fan needed on a track/race bike?

why do you want to run without a fan??
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  #20  
Old 15th November 2017, 08:35 PM
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Japcati Japcati is offline
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Default Re: Is a radiator fan needed on a track/race bike?

Originally Posted by fabiostar
why do you want to run without a fan??
Want to simplify the bike as much as possible.
Less electrics to worry about,less parts to go wrong,and less weight too.

But I know that a bigger race rad kinda adds the bit of weight back on that is saved with the fan being ditched.
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