+1, so is with cars as well
My father was a Navy Hellcat pilot in WWII. He schooled me on many things as I grew up. One thing that he always said was to warm up your engine for 1 minute at idle before subjecting the internal parts to a load. I have followed his advice for 50 years without any engine failures or excessive wear issues covering many different type vehicles. Nuff said.
(03-09-2020, 07:03 AM)peterbaron_imp Wrote: [ -> ]OK, but my Canadian version always idles at 1100 when fully warmed up.
popgun
Lives On Two Wheels
Joined: Apr 2013
RE: CB1100 Idle speed instability problem
Idle speed specification is 1100 +- 100rpm
quoting popgun from the uneven idle thread
Fully warmed up, mine idles at 1000 rpms, so it is in spec
yes....anywhere between 1000 and 1200 rpms would technically be in spec
A CB1100 cold start-up will handle anything I threw at it. Maybe with -25C ambient air temperature, it could take two or three (instead up to one) major intersections before idle would settle back to the popgun standard.
In fact, if I ever had trouble maintaining CB1100 idle, it would be on the really hot, humid days after stopping at a gas station to refuel after a long ride. Sometimes the engine needed a little throttle finesse to keep from stalling.
(03-09-2020, 12:16 PM)GoldOxide_imp Wrote: [ -> ]A CB1100 cold start-up will handle anything I threw at it. Maybe with -25C ambient air temperature, it could take two or three (instead up to one) major intersections before idle would settle back to the popgun standard.
In fact, if I ever had trouble maintaining CB1100 idle, it would be on the really hot, humid days after stopping at a gas station to refuel after a long ride. Sometimes the engine needed a little throttle finesse to keep from stalling.
Gold...are you saying this happened periodically?
btw.
I thought at least today's cars have 2 cooling water circuits, a small inner one for faster heating of the most important points and then a larger outer one
(03-09-2020, 09:39 AM)m in sc_imp Wrote: [ -> ]quick article about oil. not driven by environmental guidelines.
https://www.hotrod.com/articles/engine-oil-temperature/
Quote:as in idle the motor would need much longer to warm up the oil, thus the time of extra wear out would be prolonged.
and THATS exactly why they have a fast idle protocol.
I mean, not like i'm an engineer or anything....
and THATS exactly why they have a fast idle protocol.
I mean, not like i'm an engineer or anything....
So you are saying that a fast idle is a good thing for warm up, but a smooth drive is not. So 1100rpm is bad when cold. 2000 rpm with minimum load is bad when cold, and 1300rpm is good when cold.
Even that on the honda handbook (at least on mine) says nothing about letting it idle for a few minutes when cold, and on every modern vehicle (car or bike) handbook I've seen, they state not to let it idle and recommend to drive right away.
For me, the need to idle for warm-up is something from the past. With new oils and new manufacturing technology (much better materials, coatiings and tolerances, for example), I think it is pretty much useless as best.
(03-09-2020, 05:32 PM)alprider_imp Wrote: [ -> ]btw.
I thought at least today's cars have 2 cooling water circuits, a small inner one for faster heating of the most important points and then a larger outer one
They have one circuit, but with a bypass regulated by a thermostatic valve which allows the water to by-pass the water cooler (radiator).
https://images.cdn.circlesix.co/image/1/...7a8f8d.jpg
in short: it gets warm faster without a water cooler/ radiator ....
.. or , so you have to drive and not to wait on place with running engine
(03-09-2020, 05:26 AM)The ferret_imp Wrote: [ -> ]Ok I timed mine today Pulled her out, fired it up and hit the stopwatch. A little over 2 mins in idle dropped from 1500 to 1250 rpms 2 1/2 more minutes in it had dropped down to 1100 rpms. I took off and when I reached the end of the street 7/10 mile away at 25-30 mph it had dropped to 1000. So about 5 mins from start up to idle.
or
if you drive direct after fireup...you have with gentle driving way 2000-2500rpms...just this is the warming up procedur...
with planes it is probably something else, I think for safety reasons the oil must definitely be at full operating temperature first. to have
.