Average Miles per Gallon (MPG)

[stevetroyer]

GEBE on a sun recumbent

I get up to 180 MPG. Depends on the hills and where I ride and how much I want to pedal.
I have a recumbent Sun Speedster CX with a windscreen and I can hit 40 MPH. I am running the Tanaka 32 cc engine with the HP carb and filter.

 

[chrisnbush]

I have been getting only about 80 mpg on my 70cc center mount - I bought the kit on the internet. I don't "putt" on it, but I don't wind it out completely either - have a 16 mile commute with some hills.

Kind of wondering why it isn't better. My next engine I think is coming from DAX. I get a little seepage around the carb, have tightened the screws, also a little seepage from the engine seals although head bolts are tightened OK.

Runs pretty smooth, since I put the permatek gasket on the input. I am about 205 lbs, with the hills maybe that is the reason...

cb


cb

 

[jeffuehrer]

I was getting 90mpg when it was new (66cc), now I'm getting around 75mpg. Why has it declined?

 

[battery]

possibly loss of compression? I was getting better milage myself while breaking in the engine. I also used non synthetic to break in so the engine would wear in a little faster. I think because of the oil burning with the gas it raised my milage. I get 70 mpg now without the shift kit doing a steady 20 mph up and down the hills of NY.

 

[battery]

of course you will get better milage in lower rpm as it will utilize the fuel in the compression chamber better before it is expelled.

 

[jeffuehrer]

Thanks for the response. Sounds logical. I have 1,824 miles on this engine.

 

[battery]

wow! I have 800 miles so far. I hope to get as many as you and then some. this is my first build. and I have ordered the shift kit and a 29" bike. I am hoping to get oer 100 mpg along with a top speed of 60 mph.

 

[jeffuehrer]

wow! I have 800 miles so far. I hope to get as many as you and then some. this is my first build. and I have ordered the shift kit and a 29" bike. I am hoping to get oer 100 mpg along with a top speed of 60 mph.

The shift kit should increase your mpg. 60mph huh? That's quite ambitious of you. If I want to go over 40 I'd rather do it on a motorcycle. I don't trust anything on my bicycle over 30mph. There are some veteran mbers on here that are capable of building monsters that go that fast.

 

[battery]

I'm sick in the head. nothing makes you feel more alive than being closer to death.

 

[professor]

79cc or 212, both get 120 mpg, both have 3 speed jackshaft hubs, weird huh?
One engine is buzzing some while the other is loafing. Riding speed mid 20s.