1100ds belt tension

[ducpainter]

Yep, a Friggin Magic Twanger, better known as an FMT to be precise.  The dealers use a similar, if not the same, set up.

Which is why I have always been suspicious of audio tuners, but admire the fact that our belts persevere.....most of the time. 

AFAIK the dealers have an optical tool, but whack it by hand.

Needless to say two different tech will get different results.

[DarkMonster620]

yes dp . . .

[memper]

So then why not switch back to the ol' allen key method? Seems the fancy dohickey is hard to get repeatable results, no?

[DarkMonster620]

I use the OEM and the MotoReva units . . . Usually within 7Hz at the same point of measurment... and use the 5mm allen to "check"

[SpikeC]

 OK, I went for a little ride today and did an oil change. While I was at it I pulled the belt covers and there was less than a mm of clearance twixt the roller and belt, so I increased it to 4mm. After I get the oil back in I shall see how she sounds, but I dint think that I will be bothering with the "pluck your magic twanger, foggy"!

[oldndumb]

........ "pluck your magic twanger, foggy"!

[SpikeC]

Hahahaha!
Butt serially, after I buttoned up the oil change and started it up it sounds just as happy as can be!

[koko64]

If now all models are set the same, then the 5mm/6mm allen key method can be used on the 1100/1000 models? Correct? Or is it 5/6mm for 900/750s and 4/5mm on 1000/1100s? I know someone who does the litre+ bikes with 4/5mm.
In the end, if theyre not loose enough to slip and not tight enough to strain the bearings then youre ok. I mean how many bikes are running with perfectly tensioned belts.

[oldndumb]

.....
I mean how many bikes are running with perfectly tensioned belts.

My thoughts exactly. 

[SpikeC]

I mean how many bikes are running with perfectly tensioned belts.

Mine is! Because I said so!

[ducpainter]

In the end, if theyre not loose enough to slip and not tight enough to strain the bearings then youre ok. I mean how many bikes are running with perfectly tensioned belts.

Everyone that has them adjusted so they don't jump or make the bearings noisy.

[koko64]

Considering the bearing collapse issues caused by the over tight incorrect oem spec, it's been the "common sense" spec all along.

[Armor]

The 5 mm allen key is way too loose for the 1000/1100 motors.  Your bike will run better with the tighter belt.  The sonic method works if you have the correct tool.

[SpikeC]

 I have them set to a very snug 4mm. The engine sounds just dandy!
When I took the original belts off in November of '13 a 5mm just barely fit, and I had no idea how long they had been in there, the motor is an '07 and it had 6k miles on it.

[DarkMonster620]

I knew I had taken a screen shot of the Ducati Web educational video regarding belts . . .the date is April 2014

vertical cyl 2v

hor cyl 2v