751 Re: Around the World On a K100 Sat Mar 07, 2015 2:48 am
Holister
Life time member
Hi Floyd. Firstly, if your odo is out you won't get accurate fuel consumption readings. I check mine periodically against Google Maps. I know some will say Google maps is unreliable but I've used it over a few years in various vehicles and found it to be pretty accurate. Over 1,000 klm my odo and Google maps are within 1 or 2 klm.floyd wrote:.....
My biggest complaint at this stage is the pathetic fuel range. Im lucky to get 280kms to a tank. For an 'adventure bike' this is faaaar from adequate.
When fully loaded and riding hard I get 14.5kms/L and when unloaded I get 15.5km/L. Hows this compare with you lads?
The biggest gain in f/c I've got was from setting valve clearances. My exhausts were way out tho.
I also cleaned my injectors and got nearly 0.5 lit/100 better.
BMW say that a K100 should get 5.1 lit/100 and I've heard some say they get that and better (??) but BMW also recommend the use of fully synthetic engine oil ( uh oh ) and 100% synthetic can better f/c by around 5% (I've no proof of that apart from what I've read).
My f/c is a constant 5.6 lit/100 (5.6 to 5.7 loaded up) in freeway mode and providing I ride sensibly. I'm coming up for an oil change next month and I'm switching from Penrite MC4ST 10W-50 semi synth to Shell HX7 15W-50 synthetic. I'm hoping to realise about a 2.5% gain that will bring my f/c down to about 5.4 and a realistic range of over 370klm with a couple of litres to spare.
Another thing to consider is the battery. A lower spec'd or under performing bat can load your alternator which will affect engine output and f/c.
Also have you considered if the off road tyres you're running are affecting f/c? For your setup 6.45 lit/100 might be about right.
Just some thoughts... every little bit helps.