|Topic Review (Newest First)|
|03-09-2016 07:12 PM|
Originally Posted by TwentySixRed View Post
|03-08-2016 04:41 PM|
Originally Posted by Mysteryman View Post
Also, check this link about coolant mixing: Coolant Mix and Overheating
And another article with graphs: http://hellafunctional.com/?p=629
|02-29-2016 11:40 PM|
Originally Posted by TwentySixRed View Post
I'll try some new coolant this weekend and flush the radiator while I'm there. Could an air bubble cause the bike to have trouble cooling?
|02-29-2016 03:22 PM|
I'm running the blue Yamacool coolant. No antifreeze properties, but good for the heat.
The fans are small and only cover about 1/3 of the radiator at best, yet do an amazing job of blowing the heat into your shins. I figure keeping around 205°-210° is better than 225°-235°.
|02-29-2016 03:14 PM|
|TwentySixRed||Your other option is to buy a racing radiator or those radiator upgrades.|
|02-29-2016 03:13 PM|
|TwentySixRed||Depending where you are in Aus, you might want to experiment with the ratio of coolant to water. A mate of mine in Brissy makes his coolant mix a bit weaker, around 20% coolant to 80% water. Reason being, coolant does not remove heat as well as water. The only reason coolant exists is to raise the boiling point of the water, and it also reduces the freezing point. The best thermal solution for heat removal is pure water; but water boils at 100, so water alone ain't good enough. If you're having problems removing heat, you can gain a small advantage by increasing the water to coolant ratio. Some people run 50% each, that's fine for where you really need your coolant not to boil or freeze, but you will run hotter temps because coolant does not carry heat away as efficiently as water does. For Aussie heat, 50% each is probably not the best option.|
|02-29-2016 03:08 PM|
|TwentySixRed||Ah, you're in Australia. What you're describing is normal. The last few days here in Sydney it's been hot and humid. I've flashed my bike so the fans come on at 96, and turn off at 91. My bike still goes to 105-110, and stays there no matter what the fans do. It's only after I do some riding at 50+ for a few mins the temps come down. I think the fans are small, and only designed to stop the bike from overheating, not cool it down.|
|02-29-2016 01:15 AM|
|Mysteryman||Well, the fans come on at 96 (and should turn off at 91) but the temp still goes up to about 100, and then just sits around 98-100. The fans don't seem to cool at all. Is that normal?|
|02-26-2016 12:36 PM|
|Mysteryman||I've reflashed the bike to have the fans come on sooner. I'll see if that helps. The ambient temperature for the next couple of days should be a bit cooler so that might make a difference.|
|02-26-2016 06:05 AM|
|NoExpert||Try 96° turn on and 91° turn off. This is approximately what mine are at (205° and 195°). Seems to help if I don't let it get that hot to begin with. Depending on the ambient temperature, sometimes the bike cools down, other times it holds the temp around 205°. I'd say what you're experiencing is normal, these engines are just stupidly hot.|
|02-25-2016 11:15 PM|
Thermo fans come on, but temperature doesn't drop
Just wondering if anyone has any ideas...
I have a 2014 R1 with very low kms/miles. The weather here has been hot lately - 30 to 38 degrees C (86-100F). The bike is running quite warm, anywhere up to 111 degrees C (232F) at idle when waiting in traffic. The fans come on and they both are working (I checked) but the temperature of the coolant doesn't seem to drop more than maybe 2 or 3 degrees, which means the fans just stay on until I'm moving again. Does that seem right? I'm used to other bikes when the fans come on, the temperature drops, and the fans turn off again, and the cycle repeats. The R1 seems to heat up until the fans come on, but if I let it idle, it doesn't cool back down to the point they switch off. It just stays hot.
I flashed the ECU recently to get the fans to come on at 100 (212F) degrees, instead of 105 (220). The temp still gets past 100 at idle, right up to 105, 106, 107. The fans seem to stop it getting hotter, but they don't seem to be cooling it.
Has anyone got any thoughts as to why this is? I've checked the coolant level in the overflow, and it's sitting at about the maximum level. Bike is still hot so I haven't popped the radiator cap off yet. The fans both work and are drawing air through the radiator. Could it be caused by air in the radiator/cooling system? Any help would be appreciated.