reading all the "race" stories floating around.... this is what I'm getting...

the 700 pulls away from the 660 in the beginning of the race, but the 660 comes back with a higher top end/speed

would I be correct in assuming the only reason the Raptor can't get the holeshot is because it's too torquey with having to launch it with a manual clutch?

you must admit, that the shear weight of the V-Force (helping to keep the front end down), and the auto-trans (eliminating the clutch)should give it the advantage in launching off the line...

I'd be willing to bet if you raced both quads stock, from a rolling start at say 20mph... the Raptor should edge out the V-Force from that point on, no?

[img]i/expressions/face-icon-small-confused.gif[/img]

 

I think your assumption is very close. After watching the 700 race several different types of bikes, I think its holeshot is hard to beat.

 

I used to get the holeshot on 400exs with my Kodiak too. Good thing a race is made up of the start, the middle, and the end...

 

Man you sure love an EX huh? 3 quads no waiting!!!

 

The truth about the v-force is this. If you are a good rider with a clutch and know when and how to shift your bike, you have a good chance at winning. Myself, I KILLED a v-force at the sand drags. But it was stock, and I sure am not. But still, it was getting beat by good rappy riders EVERYTIME. Stock for stock, the rappy and v force is a VERY close race if both riders know what they are doing. Personally, Id rather have a 700 over the rap because its so big [img]i/expressions/face-icon-small-smile.gif[/img]

-nick

 

DSAPP ....

My observation of: My KFX ...vs. ... My best friends Rappy

Both machines are very torquey from a dead stop. Neither machine can apply full power in the first 20 mph.
( talking about starting in a good traction situation ..... I.E. a grass/sod field )
My Buddy and I have tried many rolling starts also..... and both machines benifited about the same....... It did not change the results.

 

Ok, so what were the results?

 

The 700 has the same Torque issues that the Raptor has. I'm not a little guy, and even with me laying over the front handlebars, if I just slam the throttle, it will go straight up into a big wheelstand. In the sand, the Torque spins through the sand making the wheelstands much easier to avoid.

I think one advantage the 700 has over the Raptor as far as a holeshot goes, is that the trany leaves the same every time. meaning that if you give it X amount of throttle (On the same surface), it will respond very close to the same every time. With the Raptor, your RPM and clutch engagement tends to varry from launch to launch, causing the quad to launch different each time.

Just a thought.

 

Situation: Both quads piped, jetted, air box mods.
( the Rappy has 22" tires, but has changed to a larger rear sprocket to make some allowance for the taller tires.

Grass covered field .... about 500 feet of excelleration space ... KFX rider about 75 lbs heavier than Raptor rider.

Results :

Assuming both quads get a good start ..( if either wheelies enough to have to back off ... the other wins ) ....
the KFX will hold about two quad lengths lead at the end.
Before the mods on the KFX ..... It was even at the 300 feet mark--- with the Rappy pulling about two quads ahead at the 500 foot mark.

We both have tried a number of different combinations.... looking for that "best". The Raptor has been used
11 tooth front, 42 tooth rear, 13 front, 39 rear, 13 front, 42 rear ..etc... first gear starts, second gear starts, different shift points...
I have tried the 25" tires from my P650 .... line locking starts .... using the rear brakes to try to hold the front
down during the launch .
( holding brake doesn't work well....front end stays down... but produces burning belt smell !)



The Summary Gentlemen .... We are only talking tenth's of a second difference over this distance.

We both love our respective machines..... for different reasons..... each represents the prefect machine for

As far as top speed goes......
This Rappy has been measured by GPS at 78.4 MPH.
I haven't done that with the KFX yet.
( We have to do that on the highway... I don't want to risk more points on my licence ! ... Maybe I should have
him ride the KFX to measure the top speed !)

 

I have raced many 700s in 300 ft drag races. From the result paper (whatever theyre called), the 700 has very good times but my top speed at the finish line is in the low 50s. The 700s at wide open throttle are around 40 mph or upper 30s. Very good take off and acceleration but they seem to lose a lot of acceleration in the later run.