My humble bike

Hi guys. I recently joined your community and I wish to share with you my motorized bike.

I've had this bicycle for more than 12 years and it has served me well. I added the 60cc engine kit last summer and since then I've done about 1800km (1125mi) on it.
At first I used it with the standard 44 tooth sprocket. I managed to hit and hold 43km/h (27mph) with it. Unfortunately I felt this speed as unsafe when riding in traffic. There were just too many cars overtaking me due to the speed difference.

Then I added a 32 tooth sprocket. With it the bike reaches 55km/h (34mph) on flat. This is a good speed to ride in traffic in my city (Sofia, Bulgaria). Sometimes I say to myself "Man, I wish I had bought the 80cc engine. I could use the extra power on that steep hill".

At some point I added my bright flashlights and my car horn. I had the horn laying around and decided it was about time I put it in use. Before that I tried ringing the bike bell, shouting, using a car alarm, revving the engine and so on. Nothing helped to make some car drivers alert that they are about to hit me or that they are doing some other endangering actions.
The horn put everything in place.

I've had a ton of fun on my motorized bicycle and I intend to keep riding it although I'm soon to buy a motorcycle.

So here's my bike with a code name roughly translated as "Buzz flier"

I use a battery charger every once in a while

Heh, thanks
The bike is indeed fast but it suffers from slower acceleration and lack of torque on the hills.

BiMoPed, I kinda not like the sound of "Bulgarian jokester". I fear that I'm not following you on the idea of 36 tooth sprocket. How would my bike reach higher speeds with a sprocket that has more teeth than the one I currently use?

When I used the 44 tooth one, I could reach 43kph. The 32tooth sprocket gave about 56kph. How would a 36 tooth sprocket give me even higher speeds?

I haven't measured the actual displacement of the engine. Here in Bulgaria the dealer sells these kits as 50cc, 60cc and 80cc.
I wouldn't be surprised if these values are false. Let's just say that I've bought the middle one and there's a larger one for sale.


@earl.k
Indeed I've thought of a shifter kit but it costs nearly as much as the engine kit. Some pedaling on the hills costs less

@Dan
Thanks. It has proven itself many times over. Perhaps, after the headlights, this has been the most practical thing I've done to my bike.

Hey, Dan, the "Awooga" type horn is super cool and cute. It would make me laugh every time I blast some ... troublemaker with it

About the bike being laughed at - Indeed I've seen some giggles and smiles in my direction but no one has ever made actual fun with my bike. Usually I meet two kinds of people - those who are fascinated with the bike and the others who consider it an offense towards the cycling ideas. The latter are quite few.

By the way, I recently appeared to be involved in a race with a sporty-looking cyclist. I buzzed past this guy who seemed to be dressed for an international race and he seemed to take this action of mine quite seriously He ran a red light in order to get ahead of me and then kept looking if I was coming. As soon as I started rolling this guy jumped on the pedals, stood up and pushed his bicycle as hard as he could.
I just sat on mine and gave it gas. Even with my reduced acceleration the cyclist didn't stand a chance. I decided not to humiliate the guy by helping my engine. If I hit the pedals hard and go at my highest gear, I could reach 50kph faster. There was no need for that though. The guy deserved a fighting chance.
I find this quite amusing

So it doesn't matter what the hard core cyclists think of my motorized bike. All that matters is that it does exactly what I bought it for and I'm having fun on it without breaking a sweat


About shifting gears - a few months ago I had the wild idea of buying a 50cc engine from an old German Simson S50 motorbike. It usually has 3 gears. The engine produces 4 horsepower - about twice as much as mine. It wouldn't had cost me much (about $130) but I wasn't sure if I could mount it properly.
I bet this engine would be quite good on a bicycle although It may be too large for the pedals to turn. I was just about to buy it but I decided to keep my engine and save the money for my future motorbike. Besides, I wouldn't have been able to sell my engine alone.

Who knows, I may as well one day do this modification and go crazy