Modify "throttle" on a Razor Dirt Quad?

Question

We bought this for our son and quickly realized it was way too fast for him. Trying to find a way to govern the speed on the thing.

Answer 1

Isn't Razor an electric quad?
Battery powered?

The throttle on those things ain't exactly a throttle.

It's a 2-Speed Electric switch.
Low-Speed and Hi-Speed.
It also actually functions as an ON/OFF switch .

When in "closed " position/NO throttle,,,it turns the power off.
The handbrake also does same thing,in addition to activating the brake.
................................................
Follow the black cable from the throttle to a white plastic multi-plug.

Disconnect that plug.

Remove the HI-Speed wire from the multi-plug,,
tape it WELL to insulate it.
Fold it back over itself,,and tape it to the cable

Then plug the throttle cable back in with only 3 wires in the Connector Block,,,and the Hi-Speed wire "dangling".

..............
There's 4 wires coming from throttle.
Red,Yellow,Orange,White.

The "Speed Wires" are gonna be the Orange and White ones.

Which is HIGH SPEED,,and which is LOW,,,I do not know???

TRY THEM,,***one at a time***,,,and see how the quad acts.
Dont disconnect more than one ONE wire from the block at a time,,,so there's No Confusion which way they go.

The CORRECT wire is whenever Hi-Speed position "dissapears" and no longer functions.

Sorry,,I wish I could tell you precisely which wire.

Trial & Error will determine which of the 2,,,easy enough

.............
Here's a picture of the Throttle and Connector Block.
Looking INTO the Connectror there is a small Tab .
You must press that sideways towards the Contact Blade to Unlock the Blade from the block.

The Wire then pulls out from the Rear of the block.

To Re-Install,,,simply push the Contact Blade into the block,,it will "snap" into place.
The lil' Lock tab must go in a certain direction,,or it wont latch in properly.


http://www.partsforscooters.com/168-1#

You can see that Latch Tab pretty clearly on the Upper Left contact blade.

Here's a picture of a bare Contact Tab so you can get an idea of what you're working with.

http://www.sjscycles.com/store/460863mmnon.jpg

The Tab is rather springy,,,
Depress it with a small screwdriver to remove.
Sometimes you can "pinch it" with tweezers or small pliers.

**Do Not stick anything into OTHER connector block attatched to Quad's wiring.

Only the THROTTLE Cable,,and only after it's Disconnected.

...................................
What that will do is restrict it to Low Speed Only,,,which is pretty slow.

I DO NOT Know how it will act when throttle is turned "too far" to HI Speed position,,,with Hi disabled.

It will either make no difference and just stay on Low Speed,
I expect this is how it'll be.
or,,
POSSIBLY it will turn Off till throttle is turned back to LOW.
I Doubt it will act that way,,,it Shouldn't,,,but it's possible.

..........
Disabling Hi-Speed is only practical way to Restrict them.

To RETURN HI-Speed Function when so desired,,,simply push the Wire back into the connector block.

Hope that helps,,Good Luck with it.

Answer 2

Razor Dirt Quad

Answer 3

having ridden both for an extensive time i would definitely conclude that a quad is much more dangerous. first off, quads are much heavier and generally more powerful than bikes. i could ride a 250 quad by the time i was 12 and couldnt ride a 250 bike until about 15, so with this sizing difference your generally riding with a larger bike much younger than with bikes. second, quads have 4 wheels and 4 axis of tipping rather than bikes with 2, so a bike is more forgiving when it comes to jumping and landing hard hits. jumping or manuvering a quad the wrong way could easily get you thrown off, because with the quads larger footprint it will do what it wants, whereas a bike will give you some wiggle room. third, handling. this kinda goes with 2 but when riding trails and washes the quad will have a rougher time thus give u more chance to crash. take an uneven whoops section, a quad with not only be rocking back and forth, but also side to side, so then it more like a mechanical bull ride, compared to a bike that doesnt give a side to side rock, thus more smooth of a ride than the quad. ive crashed pretty hard on stuff like this from going too fast on a quad but have had no problem going the same speed on a bike. so i hope i helped in giving u some of my facts and experiences about both vehicles, but just to let you know either way u go your suseptable to crashes and falls, i mean they both have very potential for fatal accidents so be careful and know you skill set regardless.

Answer 4

Mini-quads with mechanical rev limiters have a throttle stop screw tapped into the throttle housing.
Here's a picture (it's not very clear), but you can get an idea on how to put one on your son's quad.
http://www.mrcycles.com/
Go to - Yamaha AVT Parts - 2005 - YFM50RT - Steering Handle Cable - #20
--Drill a hole in the exact spot that will line up with the throttle lever. You can either tap the hole and thread in a screw with a lock nut.
--Or drill a hole, the same diameter as the screw. Put a lock nut on the inside and outside of the throttle housing.

--This will be a more simple way to govern the speed.
--Remove the carburetor top (where the cable goes in).
--Remove the cable from the throttle slide.
--With the cable going through the carb top, put the cable through a couple of nuts (the more you use, the slower the quad will rev).
--Install the throttle return spring and attach the cable back on the slide.
--The nuts will prevent the slide from going up all the way, keeping the speed down.

Answer 5

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RE:
Modify "throttle" on a Razor Dirt Quad?
We bought this for our son and quickly realized it was way too fast for him. Trying to find a way to govern the speed on the thing.

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Answer 7

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