Sorry boring question on MPG
Discussion
easy answer LOTS.
being a recent convert to biking & having spend time on forums aimed towards new bikers you'd be unlikely to get under 70-75mpg from a 4 stroke 125. I had a chinese import el-cheapo traily thing (GY125) that never got below 78mpg even when trashed for the entire tankfull down back roads.
being a recent convert to biking & having spend time on forums aimed towards new bikers you'd be unlikely to get under 70-75mpg from a 4 stroke 125. I had a chinese import el-cheapo traily thing (GY125) that never got below 78mpg even when trashed for the entire tankfull down back roads.
Hmm, 75mpg... That's not as good as I was hoping for.... I was thinking... Well a Yaris has a 1000cc engine and wighs about 1000kg gets 50mpg, a bike weighs about 150kg with a 125cc so should be lots better... not just another 50% I was thinking multiples... Are bike engines just not as efficiant as cars?
So I'm guessing that a 100mpg+ bike is a thing of the future even though little cars are getting in the 70s alrady?
So I'm guessing that a 100mpg+ bike is a thing of the future even though little cars are getting in the 70s alrady?
You want to do 40miles on a 125cc regularly, good luck! It just doesn't have the performance to be safe on A roads upwards.
My CBR600 will return MPG similar to a diesel car if I ride it carefully.. but then thats not the point of a commuter bike for me.
Personally I'd get yourself a diesel car and be done with it.
My CBR600 will return MPG similar to a diesel car if I ride it carefully.. but then thats not the point of a commuter bike for me.
Personally I'd get yourself a diesel car and be done with it.
arran said:
Hmm, 75mpg... That's not as good as I was hoping for.... I was thinking... Well a Yaris has a 1000cc engine and wighs about 1000kg gets 50mpg, a bike weighs about 150kg with a 125cc so should be lots better... not just another 50% I was thinking multiples... Are bike engines just not as efficiant as cars?
So I'm guessing that a 100mpg+ bike is a thing of the future even though little cars are getting in the 70s alrady?
125 scooters will do up to 120mpg, 50cc upto 100mpg according to my internet search, of course these are manufacturers figures and not necessarily accurate as an achievable level for any vehicle.So I'm guessing that a 100mpg+ bike is a thing of the future even though little cars are getting in the 70s alrady?
toyota yaris 1cc/kg
125 bike 0.83cc/kg
why should the bike be many multiples better than a car??
eta probably nearer 55mph than 70 mph top speed, what test would you be looking at doing?
Edited by Brite spark on Friday 4th January 18:00
Well I thought because it's 85% lighter? My understanding was energy used = distance x weight x speed or similar..... but to be honest that was 15 years ago so dont quote me!
Not sure on the test yet, depends on all the advice I get really.... Is there a commuter bike around designed to return good mpg when driven with care?
Not sure on the test yet, depends on all the advice I get really.... Is there a commuter bike around designed to return good mpg when driven with care?
Edited by arran on Friday 4th January 18:05
A 40 mile commute on a 125? You're a brave man.
You'll definitely need a 4-stroke, most 125cc 4-strokes will do around a 100mpg.
A Yamaha Diversion 600 for instance will return 60mpg...my 900 does around 45-50 mpg. Sports bikes can be pretty thirsty.
You'll definitely need a 4-stroke, most 125cc 4-strokes will do around a 100mpg.
A Yamaha Diversion 600 for instance will return 60mpg...my 900 does around 45-50 mpg. Sports bikes can be pretty thirsty.
Edited by tfm on Friday 4th January 18:22
arran said:
Well I thought because it's 85% lighter? My understanding was energy used = distance x weight x speed or similar..... but to be honest that was 15 years ago so dont quote me!
Not sure on the test yet, depends on all the advice I get really.... Is there a commuter bike around designed to return good mpg when driven with care?
it may be lighter but the engines also smaller(size to weight ratio rather than efficiency?) and of course the engine has a maximum efficiency, there are also ther variables that would effect mpgNot sure on the test yet, depends on all the advice I get really.... Is there a commuter bike around designed to return good mpg when driven with care?
Edited by arran on Friday 4th January 18:05
you really need to look at what test you need take as well, the cbt will let you ride upto 125cc if you are over 17, but places restrictions upon your riding, l plates and no motorways, so I'm guessing you'll need/want to go for das as I assume your'e over 21. If you do das then you'll be able to look at any size bike, you will get good mpg on them over the distance
my old 125 did about 63mph flat out with out any wind. add a slight breeze & your down to 50-55mph. try driving a yaris at WOT & see if it gets close for mpg. as others have said a 125 is to small for a serious commute unless its just across town.
i can get 40-45mpg from a gsx1400 with normal riding so a bigger bike doesnt use that much more fuel unless you use the performance ( its easy enough to get it under 28mpg
)
i can get 40-45mpg from a gsx1400 with normal riding so a bigger bike doesnt use that much more fuel unless you use the performance ( its easy enough to get it under 28mpg
)What needs to be said, is that anyone with anything like warm blood is not going to go on a 125, trying to save fuel for 40 miles for any length of time. You'll want to trade up, unless you're Mr Bean, or one of the Dumb and Dumber guys. No offence, but it's an activity which will get you that way. Unless you deliver pizzas...
Carl-H said:
A 125 4-stroke will struggle to do 60, never mind 70. If you are under 21 you have to take your full test but you are restricted to 33bhp for two years. This is enough to do 70 easily depending on the bike etc. If you are over 21 pass your DAS and then you can have any bike.
The cg125 I did my test on would do 70mph without too much problem and the vespa et4 we rented in crete easily did 70mph two up. Both are 125 4 strokes.Arran,
I used to do the very same commute untill a few weeks ago...Springfield to The Wharf on the GSXR750. Mate, it really gets boring along the A12, especially along the bypass. The mornings were fun, as I used to be on the road for 05:45 and not a lot around, but on the way home around 19:00 was sooooo boring, used to have to get the speed right up (almost to the speed limits!) just to stay awake.
Can't you move nearer into town???!!!
I used to do the very same commute untill a few weeks ago...Springfield to The Wharf on the GSXR750. Mate, it really gets boring along the A12, especially along the bypass. The mornings were fun, as I used to be on the road for 05:45 and not a lot around, but on the way home around 19:00 was sooooo boring, used to have to get the speed right up (almost to the speed limits!) just to stay awake.
Can't you move nearer into town???!!!
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