Cold weather and bike engines

[ph'er(zzr1200)]

I was riding home last night and happened to look at the temperature gauge on the bike. I was on the motorway and it was reading up in the normal range, looked again a few seconds later and it was down on the cold line, watched it for a while and it went up and down about every 30 secs.

It was cold last night but this must mean that my thermostat is reacting too slowly for the amount of heat that the bike dissipates in cold weather at speed.

Has any body else experienced this on bikes?

I normaly block out half the radiator in the coldest weather because the carbs freeze up otherwise, but have never seen this before.

Paul

[ph'er(zzr1200)]

BliarOut said:

My consensus is that ZZR's is b0llocksed

Thanks for the informed response!

Looks like I need to look at a thermostat change and rad flush to start with, at least I'm not going mad.