Restrictions and fuel consumption

[GRU]

I wouldn't play around with carbs too much if you want to restrict it. You could change the jets to smaller ones but then you have to make sure you are not going to run the engine too lean so it would take some tuning. I had a GS 500 about 8 years ago and played with the carbs to get more power, i ended up getting horrible gas milage because i couldn't get the air fuel mixture set right.

Get a 250 or even a 125 and you should be good

[lowglider]

I weigh 90kg (200lbs) and a 125cc scooter is more than enough for city traffic and occasional outer city trips. Automatics consume around 3l/100km, manual ones about 2.5l/100km.

[redpoint5]

Can you just restrict your right wrist?

Most people rev their bikes too high when maintaining steady flat cruise. I shift my CBR600 into 6th at 35mph if I'm just cruising at that speed.

Re-tooth the sprockets is probably the cheapest and best bang for your buck mod for MPGs. My bike is screaming around 6000rpm just keeping up with the flow of freeway traffic.

[Frank Lee]

What a funny thread. And the guy wondering about diesel... hah?

You haven't even chosen a bike yet are thinking of getting a big one- with too much power- and restricting it down?!? Then to top it off, people are talking about restrictor plates ahead of the carburetor, like that's even an option? You do know that restricting AHEAD of the carb acts just like a.... ready?.... a CHOKE PLATE. If you restrict ahead of the carb the vacuum will pull more fuel; that's how the choke works.

Now if one is still thinking of restrictor plates and has heard of them in racing, those restrictors are AFTER the carb; between carb and intake manifold.

Still, it seems to me yet another case of trying to make a pickup truck into a sports car, and then taking a sports car and trying to make it into a pickup truck. Just get the small bike if that is the most appropriate choice.

[redyaris]

Originally Posted by adrian_mirea

Will restricting a larger, let's say, 500cmc bike, like the gs500 for example, reduce it's fuel consumption?

I understood that the gs500 gets about 5l/100 km in town ( or 50 mpg or so ), under normal conditions ( not trying to drive economically ) and I was wondering if restricting it, and also if using various techniques to reduce fuel would make it reach let's say, 4l/100 km or less. ( around 60 mpg, but it would be nice if I could reach 70 mpg on it )

Just got my motorcycle riding license a few months ago and I was wondering what to buy; I commute everyday to work around town, and a very crowded one, average speed is very low for cars, about 20 km/h for the whole trip; fuel consumption is important for me, also size and weight. I will be driving only in the city with the motorcycle that I will get.

I am undecided between a few models:
- a small underbone like the honda innova 125
- honda cbr125
- yamaha virago 250, suzuki tu250 in the 250 cmc class
- suzuki gs500, honda cb500, kawasaki er-5, in the 500 cmc class

What I care about is:
- being thin enough to fit between cars when the traffic is blocked and get
for example the cbr125 is just 67 centimeters wide, that's great for going past cars in trafic
- great fuel consumption
- a reliable engine with low maintenance

I like the 500cmc ones because they are more reliable engines, and also have more than enough power, but I don't appreciate their fuel consumption ( even though they are considered very economical for their size ).
And if I get one, I think it's a good idea to restrict it since I am a beginner ( I have been riding a 49cmc moped for the past 4 months, that is all the experience I have on two wheels ).

Stick with the 50cc moped, because no other bike would be better at going 20km/h...! while getting good fuel economy.

[redpoint5]

Originally Posted by Barney Hudson

I want my convert my gasoline car to diesel.Can any one give me any suggestions what things i should consider before doing that?

I would first consider posting this question in the appropriate forum.

Second, I would post information about what car you have and how you plan to convert.

Last, I would ask specific questions so that you can get specific answers.

My answer right now... sell your car and buy a diesel one.