250sx Top Speed

[toddsf150]

Just curious- What is the top speed of a 250sx stock? A 1985 in particular if that matters. I am new to the site and didn't see anything in the archives. Thanks.

[Vealmonkey]

If I remember my science class correctly, once you go over the edge of the cliff, it should be 32 feet per second! LOL Top speed is probably around 40 miles an hour. Plenty fast enough to hurt when things go wrong. Be careful, wear a helmet.

[Chazz of Blades]

I'd say around early to mid 50s stock, in good, strong shape. They aren't the fastest around by any means, but they're a very solid trike.

[Headsup]

yea i agree right around 40 to 50ish, Always wear a Helmet also.. Top speed could be 10 i would still have mine on.

[the great gazoo]

50.5 mph is what mine'll do on flat surface.

[Xpress]

Definitely around the 50mph mark. They're like a more heavy duty 200X almost.

[350xx]

They have some good speed compared to the es,
55mph=sx about 50mph=es

But thats wound all the way out and hurting your poor engine.
http://www.3wheelerworld.com/Brochur...5atc250sx.html

[dougspcs]

Both my ES and SX go almost exactly the same speed.

Both have been fully serviced and are completely stock and tuned the same.

When my brother and I go riding we have to travel about 4 miles on gravel road to get to the trails..we race but there is no advantage on either machine.

To say that one is faster than the other isn't accurate.

Now both my machines are '85s also..perhaps some minor difference exists in the 86 or 87.

[toddsf150]

I have had 3 and 4 wheel atvs all my life. I have always had utility type atvs. Compared to the others I have driven the sx is fastest. Maybe one of you guys can take me on a ride on a 250r or a 350x and change my mind! But 50 mph is plenty fast to me! Fast enough to get you hurt.

[atc500x]

I have a OEM speedoemeter on my sx and I hit 100 km/h (about 62 mph),with 22-11-8 tire
My fatcat SX exactly the same

[dougspcs]

I have had 3 and 4 wheel atvs all my life. I have always had utility type atvs. Compared to the others I have driven the sx is fastest. Maybe one of you guys can take me on a ride on a 250r or a 350x and change my mind! But 50 mph is plenty fast to me! Fast enough to get you hurt.

Do have to agree with Todd on his point..

The 'my trike goes this fast' thing is kinda pointless..yeah my 350x is faster than my other trikes, my 250r was faster still..this is why I sold it!!

Didn't need to go that fast..hardly ever ride the 350x for that matter. Wrong kinda trike for the riding I like to do.

When I go riding the most fun I have is in some rocky, muddy, hilly trail and I hardly ever get out of 2nd gear..

How fast do they go in top gear on a flat road..doesn't matter.

'atc500x' 62..nah not believing it!!! On a trike that has a design top speed of what..45-48?? The SX just doesn't have the revs for that!! Your speedo is wacked..try it with GPS and you'll see.

[schneed]

Both my ES and SX go almost exactly the same speed.

Both have been fully serviced and are completely stock and tuned the same.

When my brother and I go riding we have to travel about 4 miles on gravel road to get to the trails..we race but there is no advantage on either machine.

To say that one is faster than the other isn't accurate.

Now both my machines are '85s also..perhaps some minor difference exists in the 86 or 87.

I totally disagree that the es and sx have the same top speed!
First, my friends and I have multiple wheelers (both 250es and 250sx) and the sx pulls out in front on a flat straight road every time.
Next, The SX gearing is completely different, in both the rear end and the tranny in the engine.
Last, we put the sx engine in an es frame, and that wheeler was still the fasted b/c of the tranny gearing.

Oh, and 62 mph is incorrect, closer to mid 50s.

But like the rest said, these wheelers weren't designed for top speed, but for dirt, mud and rocks!

[atc500x]

[QUOTE='atc500x' 62..nah not believing it!!! On a trike that has a design top speed of what..45-48?? The SX just doesn't have the revs for that!! Your speedo is wacked..try it with GPS and you'll see.[/QUOTE]

Good idea,I will try with the GPS,but since my fatcat use the same setup,with 200x front and 200x speedo gearbox,same rear 22-11-8 tire,and the speedo top to 100km/h....but I will try it and let you know.I'm maybe wrong,but 2 different machine with 2 OEM setup and top to the same speed

[toddsf150]

If it does run 62, its certainly faster than mine. My 2001 Honda Recon 4 wheeler does @45...I know the sx is slightly faster than that, but not 62!

[dougspcs]

I totally disagree that the es and sx have the same top speed!
First, my friends and I have multiple wheelers (both 250es and 250sx) and the sx pulls out in front on a flat straight road every time.
Next, The SX gearing is completely different, in both the rear end and the tranny in the engine.
Last, we put the sx engine in an es frame, and that wheeler was still the fasted b/c of the tranny gearing.

Oh, and 62 mph is incorrect, closer to mid 50s.

But like the rest said, these wheelers weren't designed for top speed, but for dirt, mud and rocks!

Both my machines are running stock sized Bear Claws..they run down the road so nose to nose you couldn't possibly make the call..

Now before the SX used to have Duro's on it..she was a bit quicker than the ES. Even though both the Duro's and Bear Claws are both 22x11x8 the size difference between the 2 was huge... Actually slowed the machine down a couple MPH when I put them on..

I suggest your feelings on the speed of the machines are all in the tires..

All the gearing in the trans/differential is to make up for the fact the 2 machines are different weights and have different standard tires sizes.

Everyone is gonna have different results with this variable..