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120mph top speed for a 125?

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DottyDuck
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PostPosted: 15:27 - 05 May 2013    Post subject: 120mph top speed for a 125? Reply with quote

just been looking at bikes online and seen this

https://www.gumtree.com/p/cars-vans-motorbikes/honda-nsr-125cc-1998/1016854064

surely he has a bad case of bullshitting?! he claims it does 120!
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c_dug
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PostPosted: 15:34 - 05 May 2013    Post subject: Reply with quote

Kph maybe Laughing
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J.M.
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PostPosted: 15:35 - 05 May 2013    Post subject: Reply with quote

Damn, dug beat me too it! Evil or Very Mad
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TomGT
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PostPosted: 15:43 - 05 May 2013    Post subject: Reply with quote

Not sure about 120, but should do at least a ton unless it's been restricted.
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fox
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PostPosted: 16:15 - 05 May 2013    Post subject: Reply with quote

Claims of 120 mph would be a selling point for any spotty 17 year old, looking for a speed thrill.
Indicated, maybe. If the speedo was well out.

Realistically I think it would be topping out at ~100.

Of course it boils down to the colour of the powerband Laughing
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Zen Dog
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PostPosted: 17:55 - 05 May 2013    Post subject: Reply with quote

My NSR had that colourscheme. Mine was a german import, so its possible that one is too, and therefore the speedo will be in kph.

Also, german ones are slightly restricted in the CDI. Mine did an indicated ~95mph flat out. My mates UK ones did ~100mph, but theirs blew up and mine didnt. Thumbs Up

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Cheeseybeaner
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PostPosted: 18:00 - 05 May 2013    Post subject: Reply with quote

fox_uk wrote:
Claims of 120 mph would be a selling point for any spotty 17 year old, looking for a speed thrill.
Indicated, maybe. If the speedo was well out.

Realistically I think it would be topping out at ~100.

Of course it boils down to the colour of the powerband Laughing


120kph?
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Andy_Pagin
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PostPosted: 18:16 - 05 May 2013    Post subject: Reply with quote

120 mph easy ... tied to the back of a Ferrari.
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hmmmnz
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PostPosted: 18:22 - 05 May 2013    Post subject: Reply with quote

i had a little ax100 that would do 150kmh (real speed) ok it was a bit modded, but it was still a piston ported air cooled 100cc 2 stroke with no fairing, i dare say on a good cold day with the right gearing you could probably do it on a decent smokey 125
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andy_uk
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PostPosted: 18:51 - 05 May 2013    Post subject: Re: 120mph top speed for a 125? Reply with quote

DOTTYDUCK wrote:
just been looking at bikes online and seen this

https://www.gumtree.com/p/cars-vans-motorbikes/honda-nsr-125cc-1998/1016854064

surely he has a bad case of bullshitting?! he claims it does 120!



Quote:
it just need a cdi box

Broke it while attempting to de-restrict??
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Rogerborg
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PostPosted: 19:23 - 05 May 2013    Post subject: Reply with quote

Nah, seems legit. It'll totally go with a new CDI, I'd fit it meeself but I need the money to buy a Staffy puppy from our Sharon's cousin's mate's parole officer. 120mph easy, bruv, just bring cash to a car park.
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andys675
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PostPosted: 19:32 - 05 May 2013    Post subject: Reply with quote

I remember stan stevens the renowned 2 stroke tuner built a special with one of those rare al-cast frame models, 180cc, big carb etc and it only did 110 is the real world
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Walloper
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PostPosted: 19:57 - 05 May 2013    Post subject: Reply with quote

Rogerborg wrote:
Nah, seems legit. It'll totally go with a new CDI, I'd fit it meeself but I need the money to buy a Staffy puppy from our Sharon's cousin's mate's parole officer. 120mph easy, bruv, just bring cash to a car park.


Wait... Hand
It's got new breack bads.
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fox
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PostPosted: 20:01 - 05 May 2013    Post subject: Reply with quote

Cheeseybeaner wrote:
fox_uk wrote:
Claims of 120 mph would be a selling point for any spotty 17 year old, looking for a speed thrill.
Indicated, maybe. If the speedo was well out.

Realistically I think it would be topping out at ~100.

Of course it boils down to the colour of the powerband Laughing


120kph?


Just stick a Mph sticker over the kph Laughing
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Snorty
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PostPosted: 20:11 - 05 May 2013    Post subject: Reply with quote

Terrible case of bullshitting.

I've had 95 indicated out of my mate's NSR. Italian import so was never restricted. That was downhill too.
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fozzym
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PostPosted: 20:23 - 05 May 2013    Post subject: Reply with quote

Practical Sports Bike Magazine are currently building, or trying to build a 100mph AR50. Maybe the seller has been using the same tuner!

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kestrel
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PostPosted: 21:07 - 05 May 2013    Post subject: Reply with quote

fozzym wrote:
Practical Sports Bike Magazine are currently building, or trying to build a 100mph AR50. Maybe the seller has been using the same tuner!

Thumbs Up


Entirely possible, 50cc GP bikes, both 2 and 4 stroke, were capable of speeds over 100mph 50 years ago.
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Teflon-Mike
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PostPosted: 21:22 - 05 May 2013    Post subject: Reply with quote

kestrel wrote:
fozzym wrote:
Practical Sports Bike Magazine are currently building, or trying to build a 100mph AR50. Maybe the seller has been using the same tuner!

Thumbs Up


Entirely possible, 50cc GP bikes, both 2 and 4 stroke, were capable of speeds over 100mph 50 years ago.


Then they limited them to a single cylinder and six gears...
The 60's tiddlers were terrifying!
Pretty sure there was a two-stroke tiddler with five cylinders! (might have been an 80- though, but still! 5 pots!)

Then there was the Suzuki that had a double gear-box....
Had something like 24 gear's from a six speed gear-box, multiplied by a four-speed gear-box, so you started in 1st +1st, then worked up through the six speeds, then another toe-up selected 2nd + 1st, etc. Aparently you just left the throttle pinned and booted the lever to go faster or slower

The power-band was so narrow, that it ticked over at something daft like 8,000 rpm, and made all its power between 11,00 & 12,000; and dropped off the power peak so abrubtly, that if you muffed a change it didn't just 'bog' but could stall and lock the rear wheel!

They also weighed about as much as a push-bike.... earliest bikes to have alli frames and other exotic materials, were in the tiddler classes of the 60's.
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Paddy Blake
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PostPosted: 21:38 - 05 May 2013    Post subject: Reply with quote

Teflon-Mike wrote:


Then they limited them to a single cylinder and six gears...
The 60's tiddlers were terrifying!
Pretty sure there was a two-stroke tiddler with five cylinders! (might have been an 80- though, but still! 5 pots!)

Then there was the Suzuki that had a double gear-box....
Had something like 24 gear's from a six speed gear-box, multiplied by a four-speed gear-box, so you started in 1st +1st, then worked up through the six speeds, then another toe-up selected 2nd + 1st, etc. Aparently you just left the throttle pinned and booted the lever to go faster or slower

The power-band was so narrow, that it ticked over at something daft like 8,000 rpm, and made all its power between 11,00 & 12,000; and dropped off the power peak so abrubtly, that if you muffed a change it didn't just 'bog' but could stall and lock the rear wheel!

They also weighed about as much as a push-bike.... earliest bikes to have alli frames and other exotic materials, were in the tiddler classes of the 60's.


The RC149 .A four stroke.

https://www.youtube.com/watch?v=qMVNAYqnRT0
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Pete.
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PostPosted: 21:53 - 05 May 2013    Post subject: Reply with quote

fozzym wrote:
Practical Sports Bike Magazine are currently building, or trying to build a 100mph AR50. Maybe the seller has been using the same tuner!

Thumbs Up


Aircooled? That'll take some doing. Are they building a streamliner or an open-wheeled bike?
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bladerunner
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PostPosted: 22:38 - 05 May 2013    Post subject: Reply with quote

Wonder if they are using bdk parts and a 93cc big bore and ar80 6 speed gearbox? I found a local ar50 with the 80 pipe and box already fitted and was very close to doing the same as a bit of fun! Missing engine numbers put me off buying it in the end!
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kestrel
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PostPosted: 22:46 - 05 May 2013    Post subject: Reply with quote

Paddy Blake wrote:
Teflon-Mike wrote:


Then they limited them to a single cylinder and six gears...
The 60's tiddlers were terrifying!
Pretty sure there was a two-stroke tiddler with five cylinders!


The RC149 .A four stroke.


The first 5 cylinder machine was actually the RC148.
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Pete.
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PostPosted: 22:47 - 05 May 2013    Post subject: Reply with quote

If they used a 93cc kit it wouldn't be a 50.
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Az
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PostPosted: 23:01 - 05 May 2013    Post subject: Reply with quote

He means 120KPH (75mph) and it'll be the restricted 15bhp one, it may be an imported bike (mine was) so the speedo's in KPH.

They're great bikes and a pretty reliable for a 2stroke but... you'll spend a lot on 2stroke oil and petrol if u ride a lot.
If you do buy it, don't be like me and not wait for it to warm up and then fuck ur engine up eventually.. wait a nice 5min's or the temp' gauge to show it out of cold before riding off. Fucking great bike though!

Take the restrictors out you'll get about 100MPH and 28bhp.
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Frost
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PostPosted: 23:46 - 05 May 2013    Post subject: Reply with quote

Sorry but some random clicking gave me a lovely RC166 video

https://www.youtube.com/watch?NR=1&feature=endscreen&v=o57JwibqCb8

Drooling
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