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Author Topic: Idle rpm  (Read 388 times)

Gypsyjon

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Idle rpm
« on: August 17, 2013, 01:38:56 PM »
My tach indicates my G5 idles at 550 to 650 rpm....

Is that about half of what it really is?? The tach is adjustable and me thinks I need to adjust...

What say you guys?

Is it off by a half?

Thx
I've gone back to my roots. British 1 lunger, stump puller.

Royalista

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Re: Idle rpm
« Reply #1 on: August 17, 2013, 02:10:52 PM »
Think so.
Would make for a real oldtime sound if it was.  ;D
moriunt omnes pauci vivunt

Gypsyjon

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Re: Idle rpm
« Reply #2 on: August 17, 2013, 06:01:19 PM »
That is what I have been thinking....my BSA Victor did not sound like this ....
I've gone back to my roots. British 1 lunger, stump puller.

barenekd

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Re: Idle rpm
« Reply #3 on: August 17, 2013, 10:01:20 PM »
Yep, should be showing about 1200 RPM. I have seen them get down into the 800 range, but that's with the decompressor sticking open.
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Mr.Mazza

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Re: Idle rpm
« Reply #4 on: August 18, 2013, 02:43:39 AM »
I've read that with tachos put onto Enfield, you have to double the reading because of where the tacho gets mounted.
Lizzy - 07 500 Deluxe ES - Red and chrome

Gypsyjon

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Re: Idle rpm
« Reply #5 on: August 18, 2013, 10:02:53 AM »
Thanks guys! That will give me something to do today, while I watch it rain out the garage door.
I've gone back to my roots. British 1 lunger, stump puller.

singhg5

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Re: Idle rpm
« Reply #6 on: August 18, 2013, 11:01:25 AM »
Tachometers usually have a switch to adjust their reading based on number of spark plug fires per stroke. It will be in the instructions manual of tach.

I think your bike is running at perfect idle rpm, 2x550 = 1100.
« Last Edit: August 18, 2013, 04:30:24 PM by singhg5 »
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Craig McClure

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Re: Idle rpm
« Reply #7 on: August 20, 2013, 08:32:18 PM »
I got mine to tickover like my BSA & MATCHLESS SINGLES. Sounds well below 800.   I don't really need a Tachometer. I think it may be related to the slightly les restrictive 1960's exhaust I'm using.  I'm happy with it.
Best Wishes, Craig McClure