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Fuel Economy Question

KI6JPX

Finally made it
I have a 2023 Himmi and it is 40 miles shy of the official breakin period finishing. My bike has a hard top box and a recent addition of the front crash bar bags. The bike has gotten as high as 68mpg US and as low as 57MPG today (CA fwy speeds ~70mpg)
CORRECTION: Fwy speeds 70MPH
 

Robc76

Well travelled
Location
Uk
I ride 40-50 mph on road to some gentle trails where I ride at 15-30mph in 2nd & 3rd gears. Where I need to I ride at 60 but that isn"t usually for long. I regularly get 90 miles per UK gallon. Riding at an indicated 65 mph for 150 miles on a motorway recently saw my mpg drop to about 75.

RobC
 

tom_d

Well travelled
Location
US
When I stay off the highway and putt around in warm weather, I see a consistent indicated 75 mpg US. On a recent multi-hour trip at 65+ and strong constant head and crosswinds as well as a large drop in temperature, I saw 55 and 57 on consecutive fill ups. If I stay 60 and below and don't encounter strong head/cross winds it usually doesn't drop below 65 mpg. YMMV :)
 

Dartymoor

Well travelled
Location
Devon, UK
I've measured my '23 doing 95mpg (UK gallon, 4.55 litres) - but I've since fitted a 16t front sprocket, lowering the revs, so I reckon I'm good for at least 100mpg on small to medium roads, 30-60mph. Motorways would drop that down a fair bit though, even with the higher ratio.
 

Roy Gavin

Well travelled
Depends state to state as fuel and pump accuracy standards different or are unenforced in some states.
So the cheapest crap, usually sold by stations with connections to supermarkets, can make a difference of up to 10% , but pump accuracy probably comes into it too, getting 46L into the 40L tank on my car in not unknown either!
Even without running out!
Taking the average of all the claims on this site, anywhere, is probably as accurate a way as any, if tank range is a concern.
I fill up first chance after countdown on the gauge, which comes up around 270/280 km, so somewhere 270 and 300 km and it takes between 8 and 10L.
But it is a old carbed bike with 14 /40 gearing so it just purrs along on a whiff of the throttle,and most of the roads I ride on are 80 kph limited.
Except dirt roads, which are unrestricted in this state!
Wouldn't depend on getting any more than around 370 out of a tankful, there are just too many variables.
 

Roy Gavin

Well travelled
Just a float on the end of a bit bent wire, so it is only a level gauge- it doesn't measure volume.
And the tank is a irregular shape, and it is possible to bend the wire while fitting the assembly.
Bending the wire might help a little if it is important to you, but you might find the level goes down quite quickly PDQ.
And the gauge might bed in a little too.
 

Woodstock

Well travelled
Location
Woodstock, NY
Well with this tank, I have so far done 230km, and it has just moved off full mark, so obviously the gauge is not working properly.
Anecdotally, I don't believe any of the gauges work "properly. " And mine, 22 INT, has changed over time. Currently, after sitting for a hundred miles at full or seven bars it suddenly goes to five bars at 140 miles and seemingly within metres it is at two bars, But I only get two U.S. gallons or so in at fill up which means the fuel consumption is still good and I should be working off mileage to calculate when I need to stop, just like in the good old days and others have suggested.
 

KI6JPX

Finally made it
I've measured my '23 doing 95mpg (UK gallon, 4.55 litres) - but I've since fitted a 16t front sprocket, lowering the revs, so I reckon I'm good for at least 100mpg on small to medium roads, 30-60mph. Motorways would drop that down a fair bit though, even with the higher ratio.
Good to know, I was considering the 16T conversion myself.
 

Dartymoor

Well travelled
Location
Devon, UK
Good to know, I was considering the 16T conversion myself.
I can recommend it if you do anything other than small lanes and dirt tracks. I bought the sprocket for £18 and it took 20 minutes to replace, one of the cheapest and easiest mods you can do that actually makes a difference.

Some people report that the original chain might be a bit tight if it's not done many miles, but mine just about fitted without needing extra links.
 

Overdrive

Well travelled
Staff member
Location
Southern UK
I can recommend it if you do anything other than small lanes and dirt tracks. I bought the sprocket for £18 and it took 20 minutes to replace, one of the cheapest and easiest mods you can do that actually makes a difference.

Some people report that the original chain might be a bit tight if it's not done many miles, but mine just about fitted without needing extra links.
As long as the chain isn’t too tight now, it needs about 35mm of slack, much more than RE suggest. Chain tension’s been done to death on all the Himalayan forums.
 

Harleyboy

Well travelled
Location
South East
With my 16T front sprocket & standard RE rear I'm getting approx. 88mpg (UK). Use motorway to get places but where possible A and B roads in UK where limits range between 30-60 mph limits. In 30 areas in 3rd gear 40+ areas 4th to 5th gear so long as I don't labour below 3000 rpms.
 

Harleyboy

Well travelled
Location
South East
Here in Uk we have the following
Motorways = Interstates/Highways (?)
A Roads = Major roads (non motorway) connecting cities & towns; these were our main roads before the Motorway invention
B Roads = Non major roads smaller connecting more of local area, supposedly lower traffic volumes
C Roads = Connecting villages/housing estate roads
 

Robc76

Well travelled
Location
Uk
B Roads = Non major roads smaller connecting more of local area, supposedly lower traffic volumes
Ha! I bought my 411 to go off road because the clogged up B roads were making days out on my GS a real chore. I really need to move to a less populated, and much warmer, country. Fingers crossed for tonight's Lotto draw 😁

RobC
 

Roy Gavin

Well travelled
I think they no longer do the 5 quid family package to Oz.
But back then you needed a trade of better, so saved them training folks.
Now we let anyone in so we have a surplus of taxi drivers and hospital porters with gammy legs and a skills shortage everywhere else!
 
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