Has anybody any experience of running a pre SRAD without a fan ? I think I may have a problem trying to squeeze a fan in behind the rad but will not be using a fairing, any ideas anybody ? How often does the fan cut in on a stock set up ?
Well, that depends on the purpose of the bike. If you plan to burn rubber or sit in traffic jams, then better have the fan there, but If you have bunch of air flowing at all times, my opinion is don't bother... I didn't!
The fan will generally only kick in when stuck in traffic, very slow moving or on really really hot days. If your bike has no fairing then the air flow alone should be sufficient so long as you keep moving
You've run one without a fan ? it's in my own frame, no bodywork in a stripped down late 70's Egli/Harris style and I don't commute in town.
My '95 1100W kept itself cool as snakes and never overheated unless burning rubber. It took a 15 minute idle session to get the fan running in 20C summer day, so I can't see the problem mate. Only thing is that you must not forget it while warming up etc, the results could be disastrous.