What's the Secret to Riding in Stop and Go Traffic??? - Page 4 - BMW K1600 Forum : BMW K1600 GT and GTL Forums
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post #31 of 55 Old 08-24-2019, 03:30 PM
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Originally Posted by StephenV View Post
THAT is a problem. Likely a big air bubble in the system. .
Good to know...bike was 50 miles old to me with no owners manual or certainly this forum yet. Should have pressed the dealer more on it but it wasn't where I bought it and again, he didn't seem to think it was an issue. I still need to address it I would imagine....6K miles later. Unless it found a way out.
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post #32 of 55 Old 08-24-2019, 04:39 PM
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I think the cooling system is designed perfectly. The last thing you want is to drag around weight for a robust cooling system you will rarely or never need. I have yet to see the triangle. WFO in 95 degree heat for an extended run on the limiter saw 219 degrees, which is one click from the fan coming on. Stopped traffic in 110 degree heat it went to 232 but managed it with the fan. Maybe the red triangle is a warning to purge air from the system or clean the radiators.
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post #33 of 55 Old 08-24-2019, 04:57 PM
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Originally Posted by Mad Max View Post
I think the cooling system is designed perfectly. The last thing you want is to drag around weight for a robust cooling system you will rarely or never need. I have yet to see the triangle. WFO in 95 degree heat for an extended run on the limiter saw 219 degrees, which is one click from the fan coming on. Stopped traffic in 110 degree heat it went to 232 but managed it with the fan. Maybe the red triangle is a warning to purge air from the system or clean the radiators.

Neither one of your "extreme" conditions above approximate the conditions that actually create the flashing red triangle.
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post #34 of 55 Old 08-24-2019, 05:03 PM
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Maybe the red triangle is a warning to purge air from the system or clean the radiators.
It must be air, the fins were crystal clean.
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post #35 of 55 Old 08-24-2019, 05:51 PM
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I never said it was "extreme." So chugging up a hill with a large woman on the back or what?
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post #36 of 55 Old 08-24-2019, 11:20 PM
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I think the cooling system is designed perfectly. The last thing you want is to drag around weight for a robust cooling system you will rarely or never need.
Are you serious, or don't believe this is a problem, or just trolling us?

How can a cooling system that overheats in routine situations be perfect?
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post #37 of 55 Old 08-25-2019, 04:05 AM
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Here in California we can split lanes which keeps the air flow through the radiator going. Agree on leaving it continue to run to cool down after stopping. I would raise the idle to put a little more load on motor, but the fans need to be on otherwise the temps will go up because of heat sink or heat soak. Much easier to pull heat away from the motor through the radiator than using the convection method.
Raising the idle will only heat up the engine quicker, and do nothing to cool it.

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post #38 of 55 Old 08-25-2019, 07:46 AM
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Originally Posted by Mad Max View Post
I think the cooling system is designed perfectly. The last thing you want is to drag around weight for a robust cooling system you will rarely or never need. I have yet to see the triangle. WFO in 95 degree heat for an extended run on the limiter saw 219 degrees, which is one click from the fan coming on. Stopped traffic in 110 degree heat it went to 232 but managed it with the fan. Maybe the red triangle is a warning to purge air from the system or clean the radiators.
Until you have been in the shoes of one of the folks who was climbing a mountain pass in traffic or even just climbing at low speeds at altitude its hard to say that its perfect. One experience with the bike overheating while the bikes all around you are not is enough to convince anyone that there is a problem.

The cooling system isn't perfect, there is enough anecdotal evidence to at least point to a potential problem. The current fan solution would intuitively seem to be the problem as it is a trade off between free air flow while you are moving and directed air flow when the fan is engaged. Meaning, the fan assembly is bulky and blocks a significant amount of radiator at speed, at no speed it doesn't flow enough air to avoid all issues. Putting in a bigger motor in the fan assembly (more RPM) and/or redesigning the fan blades for more flow could improve things without adding weight.
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post #39 of 55 Old 08-25-2019, 08:47 AM
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and take the shoulder, anyway..
Be extra careful over there... In Flatlorida, it seems that all of the road trash like nails, screws and other assorted pointed things ends up over here. We also have vehicles that will swerve over to keep you from passing... Doors open too....

As a side note: The Crown Vic that I drive one day a week will sometimes start to overheat in the summer and we will pull over, keep the engine running and raise the hood. They will start to cool down...
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Last edited by DanDiver; 08-29-2019 at 12:16 PM.
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post #40 of 55 Old 08-25-2019, 01:47 PM
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So has anyone been able to put a larger radiator in? . Is the radiator a 2 row or 3 row? If not that's not feasible add a remote radiator? We road our HDs to the top of Pikes peak with no problems. Coming down was another story. Rain, sno,hail stoped on side of road for 2 hours before park rangers rescued us . Took us down waited 3 hours they plowed road to our abandoned motorcycles. Fired them up and followed the sno plow down. Found last hotel room in town . Because Interstate was closed because of mudslides. Next day before we got back to campsite . Great trip !!!
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