Small Engine Start Issues - Thoughts?

[JerryHawk250]

I've never checked the top speed on the one i had but it went faster than i wanted to go on a bicycle. Great for just putting around the neighborhood.

[Megadan]

Originally Posted by JerryHawk250

I've never checked the top speed on the one i had but it went faster than i wanted to go on a bicycle. Great for just putting around the neighborhood.

I always looked at a motorized bicycle as the scooter for people that wouldn't be caught dead on a scooter. Or as I like to view it, a Scooter that can still work when it runs out of gas lol.

[bogieboy]

Originally Posted by Megadan

That motor only has about half a HP more than the 49cc, so "fly" would be a relative term. Maybe 40mph? You have to remember that kinetic energy depends on the square of the velocity. In simple terms that means to double the velocity of a given object the kinetic energy quadruples, or basically it takes 4 times the power to go twice as fast.

So, if a 2.5hp bike tops out at 35mph, then it would take 10hp for it to go 70mph (ignoring a bunch of other variables at least). If you do the math, an extra half a HP wouldn't add as much as you might think. What it would probably do is make the bike a bit more capable of hills and acceleration within the same speed limitations, and if you ask me that would be what I would aim for. The idea of going 40mph on most off the rack bicycles is a little scary to me. I ride big boy motorcycles for that reason.

even on a purpose built road bike, if you dont have your speedo sensor exactly opposite the valve stem (i have since done away with it, using a garmin edge 200 now) you can induce enough of an out of balance front wheel that will bounce itself right off the ground, not what you want when decending a long grade by any means...LOL thankfully that day i was able to get the speed down with the almost useless rear brakes to keep the front wheel on terra firma....

i find myself riding the pedal bikes much more these days than the motorcycle.... but that figures... met my wife on a cross country ride.... fun story about that here...LOL http://chinariders.net/showthread.php?t=12691

[kingofqueenz]

Originally Posted by Megadan

The idea of going 40mph on most off the rack bicycles is a little scary to me.

On this point let me just say, getting my standard HUFFY up to 30+ mph is a dicey scenario, the bike feels like its ready to rattle apart and I've gone through 2 sets of brake pads in 1 year, where you may not change brake pads on a mountain bike twice in 10 years ( under normal riding conditions ).

I built this for nothing but ridiculous, silly fun.... I mean why does an adult buy a Grom ?

Its pure backyard BBQ, block party, drunken buddies fun!

[bogieboy]

Originally Posted by kingofqueenz

On this point let me just say, getting my standard HUFFY up to 30+ mph is a dicey scenario, the bike feels like its ready to rattle apart and I've gone through 2 sets of brake pads in 1 year, where you may not change brake pads on a mountain bike twice in 10 years ( under normal riding conditions ).

I built this for nothing but ridiculous, silly fun.... I mean why does an adult buy a Grom ?

Its pure backyard BBQ, block party, drunken buddies fun!

set of pads every year back when i ran rim brakes, now its every other for the discs.... im a big boy and i ride HARD though...