Right Pot gets hot really quickly

[TaskMule]

You really need to get out more............

Seriously wtf" "been riding as slow as is physically possible"

 

[botus]

Seriously wtf" "been riding as slow as is physically possible"

I was deliberately trying to keep engine load and thus temperatures as low as I could - by riding "as slow as is physically possible" the idea is not to amuse halfwits on the internet - it was to scientifically understand how incompetent the R1300 cooling system is

 

[TaskMule]

I was deliberately trying to keep engine load and thus temperatures as low as I could - by riding "as slow as is physically possible" the idea is not to amuse halfwits on the internet - it was to scientifically understand how incompetent the R1300 cooling system is

Ride faster if you want cooler engine temps. This is how cooling radiators work.

 

[botus]

I already stated that, ride at 25mph and it dropped to 79C - ride at 35mph and it was 86C - which would suggest a part backed cooling system, or a dodgy thermostat

 

[J biker]

Engine temperature varies, depending on speed, throttle and load. Normal.

 

[botus]

Engine temperature varies, depending on speed, throttle and load. Normal.

thermostats and cooling fans (on systems built by competent engineers) are designed to level all that out

 

[J biker]

thermostats and cooling fans (on systems built by competent engineers) are designed to level all that out

They do not stay at a fixed temperature though. Its normal to have some variation.


My Skoda 2.0tdi, could see the temperature vary between steady on A roads and Autoroute use. Within a range.
They do not stay bang on one temperature.
2 year old car, well developed engine. Are the engineers not competent?
2013 Multistrada, that varied a lot between cruising and traffic in hot weather.

As to ‘scientific’ measurement of temperature on the externals of an r1300gs, I can think of so many factors that would make that difficult. Wind speed, direction, temperature variables. Engine design (as it looks the same, but is not the same, viewed from above) for cylinder offset and internals.
Then, you have balanced throttle bodies. Are they ‘exactly’ the same’ delivering identical fuel air mixture…from bike to bike?

As was pointed out, one cylinder has timing chain facing the rider, the other side faces away. So it could be expected that one cylinder could have a hotter surface temperature facing the rider?

Maybe there is not a problem.

 

[botus]

left pot gets almost identical temps around its throttle body mounting (on the cyl head) as it warms from cold to hot over ten miles, the right pot runs 40C different at the front of its throttle body to 180 deg to the rear

its there even after leaving it off for 5 mins to heat soak !!!
or leaving it idling as you measure things with the fan chopping in and out over say 3 mins

that's not sensible