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CB1100 Idle speed instability problem - Printable Version

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+--- Thread: CB1100 Idle speed instability problem (/showthread.php?tid=4140)



RE: CB1100 Idle speed instability problem - SportsterDoc - 10-28-2019

(10-28-2019, 08:58 AM)pdedse_imp Wrote:
(10-28-2019, 08:09 AM)SportsterDoc_imp Wrote:
(10-28-2019, 02:35 AM)The ferret_imp Wrote: Hard to believe it's been 14 months doc. Helicopter? I know a guy that became a helicopter pilot. He said keeping those things in the air is a real chore.

Yep, probably more risk than motorcycling, but I made wife and extended family a promise about motorcycling, but not about aviation...which they are supporting.

On a Robinson R22, a simple and common two seater, if the engine loses power, despite typical aviation dual ignition systems, the window to disengage the clutch, to avoid freefall, is only about 1.6 seconds, due to low enertia rotors.

Basic controls

https://m.youtube.com/watch?v=mC8KxV0chhI

Are those instructions written on the back of the instructor's hand at the 1:48 mark?
Huh

Are those instructions written on the back of the instructor's hand at the 1:48 mark?
Huh
LOL...and I tried getting us back on topic!


RE: CB1100 Idle speed instability problem - pdedse - 10-28-2019

(10-28-2019, 09:14 AM)SportsterDoc_imp Wrote:
(10-28-2019, 08:58 AM)pdedse_imp Wrote:
(10-28-2019, 08:09 AM)SportsterDoc_imp Wrote:
(10-28-2019, 02:35 AM)The ferret_imp Wrote: Hard to believe it's been 14 months doc. Helicopter? I know a guy that became a helicopter pilot. He said keeping those things in the air is a real chore.

Yep, probably more risk than motorcycling, but I made wife and extended family a promise about motorcycling, but not about aviation...which they are supporting.

On a Robinson R22, a simple and common two seater, if the engine loses power, despite typical aviation dual ignition systems, the window to disengage the clutch, to avoid freefall, is only about 1.6 seconds, due to low enertia rotors.

Basic controls

https://m.youtube.com/watch?v=mC8KxV0chhI

Are those instructions written on the back of the instructor's hand at the 1:48 mark?
Huh

Are those instructions written on the back of the instructor's hand at the 1:48 mark?
Huh
LOL...and I tried getting us back on topic!

Yeah, but at 103 pages I think we can afford a bit of leeway.


RE: CB1100 Idle speed instability problem - Obleo - 12-12-2019

Hadn’t seen enough of this thread, who is having idle issues.


RE: CB1100 Idle speed instability problem - DBM_imp - 03-09-2020

My bike started having minor high idle issues at around 5K miles. Normal seems to be 1000 rpm and I did notice the idle "hang" at 1100-1200 a few times lately. Mostly during cooler temps, and only a temporary/intermittent issue. My bike runs like a Swiss watch and have just not worried much about it.


RE: CB1100 Idle speed instability problem - Lord Popgun - 03-09-2020

Idle speed specification is 1100 +- 100rpm


RE: CB1100 Idle speed instability problem - DBM_imp - 03-10-2020

A fluctuation in idle from 1000 to 1200 is considered normal operation?


RE: CB1100 Idle speed instability problem - Riko_imp - 03-10-2020

its still an air/oil cooled bike, dont expect it to be as accurate as a modern watercooled combustion engine upon a 1000th revolution per minute...

weather conditions will certainly affect idle operations


RE: CB1100 Idle speed instability problem - Cormanus - 03-10-2020

(03-10-2020, 07:25 AM)DBM_imp Wrote: A fluctuation in idle from 1000 to 1200 is considered normal operation?

I'd have expected idle speed to be reasonably constant. The point about popgun's numbers is that provided that constant is in the range 1,000 to 1,200 rpm it's fine. I'd be worried if it's fluctuating wildly even within that range.


RE: CB1100 Idle speed instability problem - peterbaron - 03-10-2020

^^+1^^


RE: CB1100 Idle speed instability problem - Guth_imp - 03-10-2020

+2

(Sometimes when you see an opportunity to jump on an agreement bandwagon you need to act quickly before such responses become tedious. I am declaring success for myself in this particular instance.)