Honda ST1100 Section > Fuel & Fuel Additives ST1100

Carby sync

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creeture3:

--- Quote ---My bike is at 170000 + Ks, no sync or even plug change.

--- End quote ---


--- Quote ---Carbs should not require syncing unless they have been played with
--- End quote ---

Interesting......

I do have the service receipts from the previous owner, and no mention of carbies anywhere. I have recently had a new front tyre fitted, maybe I should look in that direction.

I must admit it idles fine, runs fine up to about 100k's, and then the vibes start to set in. Doesn't use an inordinate amount of fuel, and zorsts are a nice colour. (blackish) 

aside: I remember when, with leaded petrol, a nicely tuned engine had a nice light  grey zorst pipe.............

I have an old fashioned wheel balance device, maybe I will try that.

StinkyPete:
As well as wheel balance you may want to also check the following...

Rim out of round or damaged
Wear/Movement in the wheel bearings
Wear in the head bearings
Wear in the swingarm bearings
Worn UV joint in the driveline, which presents as a "buzz" through the frame

creeture3:

--- Quote ---Worn UV joint in the driveline, which presents as a "buzz" through the frame
--- End quote ---

That sorta feels like it!

Bloody hell, I hope no ! Sounds like a LOTTA hard work..............

But after 65K, and a fairly easy life? Do you know of a way of checking that?

StinkyPete:

--- Quote from: creeture3 on November 21, 2017, 08:08:57 AM ---
--- Quote ---Worn UV joint in the driveline, which presents as a "buzz" through the frame
--- End quote ---


That sorta feels like it!

Bloody hell, I hope no ! Sounds like a LOTTA hard work..............

But after 65K, and a fairly easy life? Do you know of a way of checking that?

--- End quote ---


I have  blown a universal joint in the drive at around 135,000km, which showed up as a speed related buzz through the footpegs pegs, and a heavy growl as the suspension unloaded when exiting an undulation.  See  http://ozstoc.com/index.php?topic=10046.0    Pulling in the clutch would change the load on the UV joint and change how it is felt or heard.

If it is the UV joint, you need to attend to it as a matter of urgency.   If it lets go, the shaft will be thrashing around in the swingarm housing, and I imagine it would do a huge amount of damage to a lot of stuff, and could even lock up the back wheel.

alans1100:
More than likely wheel balance issue having just replaced the tyre; especially if all was well before hand.


--- Quote from: StinkyPete on November 21, 2017, 07:46:31 AM ---

Rim out of round or damaged
Wear/Movement in the wheel bearings
Wear in the head bearings
Wear in the swingarm bearings
Worn UV joint in the driveline, which presents as a "buzz" through the frame


--- End quote ---

I expect that might be the case with mine if I had any unusual vibration since it's done 207,000km.

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