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 Post subject: 125 top speed?
PostPosted: Sun Oct 02, 2011 5:35 am 
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Joined: Mar 13, 2011
Motorcycle: Honda Rebel 125cc
Rebel: 125
Country: UK
State/Province: UK
City: rustington
Top speed on a rebel 125? I think its about 65/70

how can i make it do 80ish?

Thanks Guys:)


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 Post subject: Re: 125 top speed?
PostPosted: Sun Oct 02, 2011 5:57 am 
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Joined: Mar 19, 2010
Motorcycle: Yamaha Midnight Virago 920
Rebel: 250
Country: USA
State/Province: MI
City: Near Ann Arbor
You should be able to bolt a 250 engine in to the frame.

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 Post subject: Re: 125 top speed?
PostPosted: Sun Oct 02, 2011 6:37 am 
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Joined: Mar 13, 2011
Motorcycle: Honda Rebel 125cc
Rebel: 125
Country: UK
State/Province: UK
City: rustington
You can bolt a 250 into it. but im only 17. and i cannot get insured of legally drive it :( biggest is 125 :/


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 Post subject: Re: 125 top speed?
PostPosted: Sun Oct 02, 2011 7:47 am 
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Joined: Jun 14, 2008
Country: USA
State/Province: TX
City: Lancaster
Easy.
Find a tall cliff

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 Post subject: Re: 125 top speed?
PostPosted: Sun Oct 02, 2011 8:57 am 
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Joined: Jul 4, 2009
Country: USA
State/Province: AZ
City: Chandler
Who cares about "legal"? They would look pretty much the same, I doubt anybody would notice. Oh wait a minute. I forgot you guys have that MOT thing over there. We have no inspection at all except for emissions, and that should be going away any time now for motorcycles. I have built a number of hot rods over the years, with much larger engines in them than what the VIN show should be in them, and never told the insurance company. It's really none of their business. It's the driver that causes accidents, not the car (or motorcycle) Here sport bikes do seem to go down a lot more often than other types of bikes, and I see two reasons for that. One, it takes a lot more skill to ride a sportbike safely than it does a cruiser, so beginners are likely to crash them. Two, experienced sportbike riders tend to be a lot more aggressive than other riders, so they too crash more.

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 Post subject: Re: 125 top speed?
PostPosted: Sun Oct 02, 2011 9:25 am 
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Joined: Jul 25, 2003
Motorcycle: 98 Valkyrie
Rebel: 250
Country: USA
State/Province: GA
City: Vidalia
JerryH wrote:
Who cares about "legal"?


Given the response, I'd have to say that they guy asking the question cares about legal.

Quote:
Here sport bikes do seem to go down a lot more often than other types of bikes, and I see two reasons for that. One, it takes a lot more skill to ride a sportbike safely than it does a cruiser, so beginners are likely to crash them. Two, experienced sportbike riders tend to be a lot more aggressive than other riders, so they too crash more.


Around here it's almost always cruisers that wipe out. I tend to attribute this to a fear of steering and the tendency for inexperienced riders to gravitate toward cruisers and ride almost exclusively in large packs of equally-unskilled riders.

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 Post subject: Re: 125 top speed?
PostPosted: Mon Oct 03, 2011 7:49 am 
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Joined: May 6, 2004
Motorcycle: 2005 Yamaha Vstar 650
Rebel: None
Country: USA
State/Province: TX
City: Fort Worth
JerryH wrote:
I see two reasons for that. One, it takes a lot more skill to ride a sportbike safely than it does a cruiser, so beginners are likely to crash them. Two, experienced sportbike riders tend to be a lot more aggressive than other riders, so they too crash more.


Cranial Rectum Inversion will ruin any ride. Most of your sport bike riders are of a younger crowd who so often are afflicted with CRI.

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 Post subject: Re: 125 top speed?
PostPosted: Mon Oct 03, 2011 8:48 am 
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Joined: Aug 29, 2009
MrAlex1994 wrote:
You can bolt a 250 into it. but im only 17. and i cannot get insured of legally drive it :( biggest is 125 :/


Here's an idea: Stick with the 125cc for now. Drive it around. Get road experience. Get confidence. Before you know it, you'll be old enough to legally drive a more-powerful motorcycle. Get one then. And, when that day comes, you'll already have road experience and confidence that you earned back when you had your 125cc.

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 Post subject: Re: 125 top speed?
PostPosted: Thu Oct 06, 2011 11:28 am 
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Joined: Aug 29, 2011
Motorcycle: Harleys.. 2 of em...
Rebel: 250
Country: USA
State/Province: Va
City: Lynchburg
Thats good advice right there...


Alan wrote:
MrAlex1994 wrote:
You can bolt a 250 into it. but im only 17. and i cannot get insured of legally drive it :( biggest is 125 :/


Here's an idea: Stick with the 125cc for now. Drive it around. Get road experience. Get confidence. Before you know it, you'll be old enough to legally drive a more-powerful motorcycle. Get one then. And, when that day comes, you'll already have road experience and confidence that you earned back when you had your 125cc.

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 Post subject: Re: 125 top speed?
PostPosted: Sat Dec 03, 2011 8:38 pm 
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Joined: Dec 11, 2009
Rebel: 250
Country: usa
State/Province: sc
City: pageland
custom cam shaft, racing rods and pistons, larger carb,custom intake,nitromethane fuel,correct sprockets,remove all eccess weight,light weight wheel tire combo,carbon fiber windscreen,larger exhust and you might hit that speed. All it takes is time and money the more money the less time.


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 Post subject: Re: 125 top speed?
PostPosted: Sat Dec 03, 2011 9:37 pm 
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Joined: Sep 17, 2003
Motorcycle: 5 Shadows, 3 Rebels
Rebel: 250
Country: U.S.S.A.
State/Province: NV
City: Las VLX-as
FYI --- wringing 80-ish from a 250 motor is not very common either.

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 Post subject: Re: 125 top speed?
PostPosted: Sun Dec 04, 2011 7:24 pm 
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Joined: Jun 14, 2008
Country: USA
State/Province: TX
City: Lancaster
Find a really tall hill.



Start at the top.

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 Post subject: Re: 125 top speed?
PostPosted: Sun Dec 04, 2011 8:44 pm 
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Joined: Apr 6, 2005
Country: USA
State/Province: CA
City: Long Beach
MrAlex1994 wrote:
You can bolt a 250 into it. but im only 17. and i cannot get insured of legally drive it :( biggest is 125 :/


That's the idea of a graduated license so that you can't go 80mph.Do your time on the 125 and when you're able, get the 250.


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 Post subject: Re: 125 top speed?
PostPosted: Mon Dec 05, 2011 4:52 pm 
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Joined: May 13, 2009
Funny that from 125cc to 250cc there is something like a 5-10mph speed increase. It's probably similar between the 250 and the 450, the 450 will probably come close to 100. All that power is required to fight the wind.


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 Post subject: Re: 125 top speed?
PostPosted: Mon Dec 05, 2011 4:59 pm 
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Joined: Feb 23, 2009
Motorcycle: Rebel 250 plus a few others
Rebel: 250
Country: Canada
State/Province: NB
City: Fredericton
gandalfretlaw wrote:
Funny that from 125cc to 250cc there is something like a 5-10mph speed increase. It's probably similar between the 250 and the 450, the 450 will probably come close to 100. All that power is required to fight the wind.

Power needed to overcome wind drag for a given shape varies as the cube of the speed. Thus once you get to an elevated speed, it takes a LOT more power to go significantly faster.

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2007 Ducati 1098S
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