250ex vs. crf100f

[rev-man]

will my 250 beat a crf 100f i havent raced yet cause he does not get it til christmas

my 250 has dg xcellerator exhaust and that is it

[RideRed84]

If a crf 100 f is the same as an xr 100 then yes

[Drummit77]

it's a tough call. I'd say he's got ya if he knows how to ride it at all. Power to weight ration is in his favor there. Hard for a quad to beat a bike in an open drag race. My money's on the bike....sorry.

Chris

[rev-man]

well im 5'7 190

and he is about 5'5 200 so i really dont know

[RideRed84]

Originally posted by rev-man
well im 5'7 190

and he is about 5'5 200 so i really dont know
You have him beat hands down as long as you can ride decently. I own a 250EX and have messed around on an XR100. There is just no comparison.

[rev-man]

so you are saying i cant beat him

[RideRed84]

Absolutely, the EX has much more power and even though there is a signinficant weight difference the EX more then makes up for it.

[Drummit77]

I'm sorry. I'm more inclined to bet on the bike. The crf is not the same as the xr. A stock CR250 is pushing high 20's/low 30's HP. At 50lbs or more LIGHTER. My banshee was pushing 40+. Same rider build and weight. Bike ate me alive. Here's why:

He flogged me sooooo bad out of the hole that I couldn't catch him. Even though I was running a 6 speed and he only had 5 there was just no way. He killed me. I've seen the same thing every time I've seen a bike run a quad. The bike has 3 lengths on the quad before 3rd gear.

I wouldn't bet anything big on winning that race...personal experience. If you do run him could you let us know what happened? I'm curious

[07250ex]

Originally posted by Drummit77
I'm sorry. I'm more inclined to bet on the bike. The crf is not the same as the xr. A stock CR250 is pushing high 20's/low 30's HP. At 50lbs or more LIGHTER. My banshee was pushing 40+. Same rider build and weight. Bike ate me alive. Here's why:

He flogged me sooooo bad out of the hole that I couldn't catch him. Even though I was running a 6 speed and he only had 5 there was just no way. He killed me. I've seen the same thing every time I've seen a bike run a quad. The bike has 3 lengths on the quad before 3rd gear.

I wouldn't bet anything big on winning that race...personal experience. If you
do run him could you let us know what happened? I'm curious

dude are you serious lol a cr250 has like 45 - 50 hp stock

[Drummit77]

I checked it out...you're a little closer than I was but you're still high. Bone stock the 2-stroke 250's from about '00 on up are between 40 and 46. Now we're talking advertised hp. Can't find any numbers on the CRF100...sorry.

On the other side of things...it's not uncommon for manufacturers to "weight" their advertised hp ratings either. Even though the newer bikes are a LONG way from the the bikes just 10 yrs. back consider this--

1) The 250 2 stroke is pretty much unchanged with the exception of the addition of the powervalve. (Stroke, bore, basic design) There are improvements, but the overall design is unchanged.

2) In the mid 90s advertised hp ratings were in the mid to high 30's range.

3) Powervalves were introduced to help torque....not horsepower.

So where did all this free hp come from?? It's speculation on my part as I haven't seen hard numbers on a dyno...but it wouldn't surprise me at all to find out the new CR250 was only in the high 30's to low 40's.

Try this...drag race a mid 90's 250 against the new 250's. The new ones are faster...but it's not a huge difference. At 7-10 hp it should be murder.

Then try out the CRF450. The CRF is rated around 50hp. Only a few hp off from the advertised hp of the new 250s. 450's spank the 250s all day. You're talking 3-5 hp and a pretty strong improvement in speed.

Still not convinced? Try a 500 against a 450. Only a couple hp separation there. I don't see any 450's pulling all-throttle 5th gear wheelies from the factory. In 1990 the 500's where doing it...rated at 52hp.


There have been improvements to the 250s...no doubt about it. But you have to remember that a lot of speed is in the suspension. Yes...they found more power....but 7-10hp out of a motor that hasn't had a major rework in god knows how many years....doubtful.

Point is factory hp numbers LIE. You really can't put stock into them. You can't go 20 yrs. without showing the public a hp gain and you SURE can't show a loss so you pad a little this year...you pad a little next year...till you get where we are now. Think about it.


Chris

[RideRed84]

We're talking about a 100cc four stroke dirt bike with the same engine as an XR 100. Not a high perfromenace race bike with a 2 stroke power plant. The crf F series is the same as the old XR's. The R series are the old CR series of race bikes.

[Drummit77]

Originally posted by RideRed84
We're talking about a 100cc four stroke dirt bike with the same engine as an XR 100. Not a high perfromenace race bike with a 2 stroke power plant. The crf F series is the same as the old XR's. The R series are the old CR series of race bikes.

You're right....the f is the same as an x. My mistake there...sorry. :) I'd take the 250 but I think it's close.

[glamiskid395]

i'd have to say the 250ex also.
my sister just bought a crf150f and i think the 250 would beat that, so id say hands down for the 250ex.

[04hemiboy]

Originally posted by glamiskid395
i'd have to say the 250ex also.
my sister just bought a crf150f and i think the 250 would beat that, so id say hands down for the 250ex.

A CRF150 beats a 07 Honda Rincon 680 EFI 4X4. No way will a 250 ex take the 150f.

The 250EX & 100 should be a decent race with 2 good riders.

[rev-man]

well i rode the crf 100f yesterday and it seems my 250ex would maybe beat it by a lenght or two the 100 runs out of gear bigger sprocket would really help it