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The average of a 2 way run on the same road is the only way to get an accurate top speed. Downhill with a tailwind doesn't tell us much.
 

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'09 Rebel, '19 Baja Pulsar 180, '04 Hardley XL 883 Sportster
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I like your reasoning,Mojo. Above 65, they sound like the pistons are ready to start swapping holes anyway. I did a quick-roll over the hood of a car at about 65 mph when I was 16. God was my co-pilot and was OK, but the pilot got a fractured arm & a mild concussion. As I remember, God's insurance had been suspended & I took a total loss on my '57 "Hardley" 165. Hey, any landing you walk away from, is a good one.

Things can always be worse. You could be you X-wife's new husband !
 

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The average of a 2 way run on the same road is the only way to get an accurate top speed. Downhill with a tailwind doesn't tell us much.



My favorite kind of hill for speed is downhill both ways. I prefer uphill both ways for twisties.
 

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I was behind a friend and he was doing 110. I was pegged and still had a lil to go. I run diff pugs to
 

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I was behind a friend and he was doing 110. I was pegged and still had a lil to go. I run diff pugs to
110mph on a 250 with room to spare?

Or do you mean 110Kph?
 

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OK well I'm calling your claim mature male bovine excrement now, I can't see how ANY spark plug is going to make your 250 Rebel go 110 MPH, if it were that easy everyone would do it.
you dont have to believe me.i was followed by a friend and his car said 110,mine was pegged out.


anyways have a good day.
 

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Well certainly looks like a 250 Rebel, but I'm still saying it's not the whole truth, your buddy might have been joking with you or something.
Many many many 250 owners have tried to improve the 250's top end performance to get what you have claimed.
No one has been able to back up their claims with actual evidence.
Again if it were as easy as changing spark plugs EVERYONE would do it.
whats ur top speed because i have been pulled over being clocked at 100.
i donxt know about other ppl but i peg my bike all the time 85-100mph easy idk i run 85-90 oh the h\w all the time everyone here does 75-80 and i can pass them


i would take a pic but its a little hard to take a pic hugging my bike :)
 

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110 on a Rebel 250??? Must have been an extremely long, steep, downhill.
 

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Nope. Mph I had iCarly had 1/8 left
OK sorry, but I am extremely skeptical of this story. The only way a stock or near stock Rebel 250 gets to 110 MPH is if it rides over a tall cliff or gets pushed out of an airplane. At those speeds most of the power requirement is to overcome wind resistance and that required power is proportional to the cube of the speed. As speed increases, horsepower required goes up exponentially.
Thus the power to overcome wind resistance at 110 is roughly 110^3/80^3 or 2.59 times as much as is needed to overcome wind resistance at 80 mph. If we are generous and assume say 8 HP of the Rebel's 16.5 is needed to overcome wind resistance to get to 80 mph, then we would need 20.72 HP at 110 mph plus at least the 8.5 we assumed was to overcome friction at 80 mph for a total of 29.2 HP. This also assumes a no wind condition. So you would need almost two Rebel engines to get up to 110 mph.
This is just conservative physics. You can't fake it.
 
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OK sorry, but I am extremely skeptical of this story. The only way a stock or near stock Rebel 250 gets to 110 MPH is if it rides over a tall cliff or gets pushed out of an airplane. At those speeds most of the power requirement is to overcome wind resistance and that required power is proportional to the cube of the speed. As speed increases, horsepower required goes up exponentially.
Thus the power to overcome wind resistance at 110 is roughly 110^3/80^3 or 2.59 times as much as is needed to overcome wind resistance at 80 mph. If we are generous and assume say 8 HP of the Rebel's 16.5 is needed to overcome wind resistance to get to 80 mph, then we would need 20.72 HP at 110 mph plus at least the 8.5 we assumed was to overcome friction at 80 mph for a total of 29.2 HP. This also assumes a no wind condition. So you would need almost two Rebel engines to get up to 110 mph.
i was just answering a ? of the post
i dont whegh much maybe ur bigger all i kniw is my bike is FAST even homeboy was like damn
 

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i was just answering a ? of the post
i dont whegh much maybe ur bigger all i kniw is my bike is FAST even homeboy was like damn
OK sorry, but I am extremely skeptical of this story. The only way a stock or near stock Rebel 250 gets to 110 MPH is if it rides over a tall cliff or gets pushed out of an airplane. At those speeds most of the power requirement is to overcome wind resistance and that required power is proportional to the cube of the speed. As speed increases, horsepower required goes up exponentially.
Thus the power to overcome wind resistance at 110 is roughly 110^3/80^3 or 2.59 times as much as is needed to overcome wind resistance at 80 mph. If we are generous and assume say 8 HP of the Rebel's 16.5 is needed to overcome wind resistance to get to 80 mph, then we would need 20.72 HP at 110 mph plus at least the 8.5 we assumed was to overcome friction at 80 mph for a total of 29.2 HP. This also assumes a no wind condition. So you would need almost two Rebel engines to get up to 110 mph.
This is just conservative physics. You can't fake it.
I was drinking water when I read this, I nearly choked on it, thanks for the laugh Duckster!
:lol2:
u will see when i get it back together about to head and weld it back.all i can tell yall is its fast. its a lil scary when this ***** just goes, i dont use 1st gear
 

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Your Rebel may be fast, but it's not THAT FAST. We had one guy who claimed to have been clocked at 90 on a speeding ticket, and we thought that might almost be possible at the bottom of a long hill with a snapping tail wind, but I don't buy 110 mph with an unfaired stock Rebel , even a "fast" one.
 
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