shane636

as ye know im building a stunt 636 and i was chatting to pez about the fan and he said that some of you lads are running twin fans of extra cooling.. thing is, a second 636 fan wont fit due to the cam censor being in the way.. so what kinda second fan do you 636 lads use? cheers

ZX636STEVE

No need for 2 fans just run the one but wire it so its always on.2 is overkill unless its crazy hot.

andyblade79

have heard of people getting fans from computer shops and using them, dont know how well they work tho

paragus

i had the fan mod and i was still over heating.. so i run my regular fan and a 07/08 r6 fan on the other side. R6 fans are tiny and push a lot of air. I've never had any over heating problems since.

NoFixedAbode

I run two fans on mine dude. They are both standard, just get one from breakers. On mine I swapped and re-welded the top two legs and weldeded a tab onto rad. If you need I will sort pics out.

jabgo

No need for two fans i run the one on a switch but make sure its wired the correct way (pulling air through not pushing hot air in. Normal riding with two fans the bike doesnt get warm enough....

jims

for slow stuff should be ok with original one,for drifting and burnouts in summer you will need second fan.If someone intrested I can sell my old fan which is from trials gas gas,with holder.I chanched it for bigger one as my radiator is totally fucked.

-Ludo

I have stock fan and its not on a switch. mine runs fine. Not always needed IMO

jabgo

mine does alot of burnouts and drifting in a 15 20 min show and doesnt get hot with it on a switch.

All three of us have different fan set ups - Lee no mods, Me have it on a switch and chris has two fans on a switch but he only put two fans on because he wired them up the wrong way, now its abit too cool.

Hope that makes sense or helps

burnoutnut

yeah thats because you live in a contry where a heat wave is 25(C)

over here in aust we hear about all the pommy s collapsing in the hottest heat wave since 1901 when it reachs like 29 (C)

shane636

my last 636 fan was on all the time and the bitch kept over heating!! why is it a bad thing to have the bike running too cool on 2 fans?? loss of power?

vandal34

The c1h runs a bigger rad and is dead easy to fit two fans. The b1h is a smaller rad and is a bit more tricky because of the cam sensor like ya said.
On a b1h start doing donuts and they boil fairly quick. Ya dont really need two fans here in the uk unless ya a noise and smoke type of guy !!!

vandal34

Nope because they dont run right if they run too cool. B1h do head gaskets now and then. I would think that was the prob with ya old bike.
mine runs fine now i have changed the engine.

shane636

cheers lads

Ramberg

I was looking at c1h rads and the only difference I can see is that the B1H rad has a thermo switch and the C1H rad doesnt.Has anyone ever put a C1H rad on a B1h 636.I was thinking of getting a C1H rad and just welding in a thermo switch.What you guys think?

-Ludo

thats true I was in Las Vages and around AZ alot the other month, and dam that was warm, 112F at night But i loved it. I'd live there any day

Dont know how my bike would do tho

vandal34

Yep they fit straight on except ya need to make another lower bracket which normally break anyways. Just wire the fan on constant. I wouldnt bother with the thermo switch on a stunt bike.

GHOSTIE

+1 i run stock fan with stock switch, never any problems......
we live in england not florida.....

burnoutnut

bloody poms

-Ludo

Its around this time of year we need to stop riding every 10 mins or so to warm our fingers up on the exhaust