Guzzi07 Posted October 15, 2012 Posted October 15, 2012 Hi everyone: I have my bike back on the road now after a gearbox internals swap, new clutch, full service and working on the bike's Keihin FCR jetting. I have attached a few photos below. I am still fiddling around with the jetting and would like to ask what sort of fuel consumption people are getting from their Sports? I checked and on the highway run (averaging around 100km/hr - 60mph) I was getting 4.65 litres / 100km and 5.47 litres / 100kms in more hilly / backroad riding. I think the bike is still running too lean in the slow fuel jet area and the fuel consumption looks a bit low to me, would be interested to know what other owners get. Thanks, Jason
milar Posted October 17, 2012 Posted October 17, 2012 Hi everyone: I have my bike back on the road now after a gearbox internals swap, new clutch, full service and working on the bike's Keihin FCR jetting. I have attached a few photos below. I am still fiddling around with the jetting and would like to ask what sort of fuel consumption people are getting from their Sports? I checked and on the highway run (averaging around 100km/hr - 60mph) I was getting 4.65 litres / 100km and 5.47 litres / 100kms in more hilly / backroad riding. I think the bike is still running too lean in the slow fuel jet area and the fuel consumption looks a bit low to me, would be interested to know what other owners get. Thanks, Jason Hi Jason, Great looking bike. I did a quick conversion to US and 5 litres equals about 1 US gallon and 100 KM is about 62 US miles. So you appear to be getting about 60 miles per gallon. My sport gets closer to 40 mpg. 60+ is very, very good. But others can comment. Mike
Guzzi07 Posted October 18, 2012 Author Posted October 18, 2012 Thanks for the info Mike Based on your figures I think the fuel economy is a bit too good (ie. low fuel consumption) and the bike is too lean. My MG 1200 Sport used to get around 5 litres per 100km on the highway with lean factory mapping (before I did a ECU remap anyway), so I was thinking that to get better than that with this bike might indicate a too lean mixture. I will keep monitoring the fuel consumption over the next month or so then start richening the slow fuel circuit to see whether I can reduce the flat spot between 1 & 2k rpm, and see if these changes makes much difference to the fuel consumption. Jason
Josh Posted October 22, 2012 Posted October 22, 2012 Wow, that's good fuel economy! My Sport (40mm Dellorto) usually gets about 40-41mpg. I just recently got 46mpg but was riding with a couple of 500cc Honda singles. Hi everyone: I have my bike back on the road now after a gearbox internals swap, new clutch, full service and working on the bike's Keihin FCR jetting. I have attached a few photos below. I am still fiddling around with the jetting and would like to ask what sort of fuel consumption people are getting from their Sports? I checked and on the highway run (averaging around 100km/hr - 60mph) I was getting 4.65 litres / 100km and 5.47 litres / 100kms in more hilly / backroad riding. I think the bike is still running too lean in the slow fuel jet area and the fuel consumption looks a bit low to me, would be interested to know what other owners get. Thanks, Jason
Guzzi07 Posted October 23, 2012 Author Posted October 23, 2012 Wow, that's good fuel economy! My Sport (40mm Dellorto) usually gets about 40-41mpg. I just recently got 46mpg but was riding with a couple of 500cc Honda singles. Hi everyone: I have my bike back on the road now after a gearbox internals swap, new clutch, full service and working on the bike's Keihin FCR jetting. I have attached a few photos below. I am still fiddling around with the jetting and would like to ask what sort of fuel consumption people are getting from their Sports? I checked and on the highway run (averaging around 100km/hr - 60mph) I was getting 4.65 litres / 100km and 5.47 litres / 100kms in more hilly / backroad riding. I think the bike is still running too lean in the slow fuel jet area and the fuel consumption looks a bit low to me, would be interested to know what other owners get. Thanks, Jason
Guzzi07 Posted October 23, 2012 Author Posted October 23, 2012 I think the 60mpg you calculated is based on the British (Imperial) MPG (1 gal = 4.55 litres). A US gallon = 3.79 litres. Based on this, the highway leg equates to 4.65 litres per 100km = 51mpg (US) (60mpg imperial) and country riding 5.47 litres per 100km = 43mpg (US) (52mpg imperial). Conversion at: http://www.thecalculatorsite.com/conversions/fuelconsumption.php Overall this does not appear to be too far off, given my bike has different carbs.
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