Quarter turn throttle solution

Usually the bikes come with a standard and short throw option. G2 ergonomics I believe also sells them as I’ve bought their throttle tubes with different cams but I’m not a lock on grip guy. 

I thought when I used  the lock on grips they had a short throw cam option? One was around 1/3 turn the other a 1/4. 

I think you’d be surprised at how much a 1/4 turn throttle would actually require you to rotate your wrist, I experimented with it a bit before when designing a throttle and it was an absolute nightmare to ride with.  To be fair I usually run the fastest throttle cam possible when I have the choice, but anything over the standard rotation (about 60 degrees if I’m remembering correctly) ends up being a bit cumbersome, so going for more rotation than stock generally isn’t a good setup. 

If you’re looking to smooth throttle input then mapping changes for a four stroke or a flywheel weight for a two stroke would likely be a better bet.  

Quarter-turn is shorter than stock man. I think you are thinking of this backwards. Stock is around half-turn. 

For some reason this whole thing is difficult for some people to comprehend (not saying you specifically). I raced with a kid growing up who was completely convinced the location/angle of his throttle housing changed the start/stop of the grip rotation.

JM485 said that stock turn is about 60 degrees.  I haven't measured it, but would tend to agree in that assessment.  

Quarter turn is 90 degrees and half turn is 180 degrees.  Both of those are significantly more of a turn to get to WOT, and stock is NOT half turn.  Maybe I am thinking backwards, but....naw.

Quarter turn throttle is vernacular for quicker turn.

It sounds like basically you want a quicker turning throttle.   First, what exact bike are we talking about here?  It matters in determining what options are available.

Let me make this short and quick for you (haha pun) - if you have a 4-stroke, get a Motion Pro Rev-3 throttle system.  It is ODI-lock on compatible and it is the only true way to get big cam reels that will give you a no joke super-short throttle.   Any other tubes, cams, reels that are designed to fit in the stock throttle housing (looking at you G2) will only give small changes since they are limited by what will fit in the housing.  The Rev-3 replaces the entire housing and allows really big reels and multiple options to switch out easily.

I really like the G2 throttle tamer on my 350 for woods racing and really just in general, it is a less ramped profile in the beginning so easing back on throttle is very smooth and easy to modulate then it ramps up about halfway through to make it about the same degree throttle tube rotation. 

Obviously not compatible with lock ons but I prefer the feel of glue ons anyways. 

Create a small bump on your existing throttle cam on the pull cable track, this creates more leverage resulting in a quicker pull. Could possibly use a resin or super glue on a small piece of plastic.
 

over grip that bitch and twist it, bro

Definitely not a good idea

Be careful with a quickturn throttle.  After 35 years of not using one, I went that way to help after I broke my wrist.  It was awesome for full throttle but bad for maintenance throttle applications.  I got in two bad wrecks because when I would get into a situation where I needed to barely crack the throttle I would be giving it a tiny bit too much resulting in huge yard sales.  

How so?

Putting some numbers behind stock stuff...

With the alternate throttle cam included with the Austrian bikes and all ODI grips, my 23 GasGas MC350F is slightly less than 90° (less than 1/4 turn).  [photo attached below]  KTMs brands are all sold with a longer throw gray pulley (cam) but they include a black pulley in the bag with the accessories that come with the bikes.   I swapped to the larger diameter black pulley before I started the bike.

Most two strokes are quicker.  I have a YZ250, YZ125 and a KX500 all with OE Yamaha throttle housings and they're closer to 60° or 1/6 of a turn.   All of these are set up with the ODI (or EMIG) lock on grips and the black ODI pulley that cost about $3.50.

Switching bike to bike I feel like the slightly longer throw on the four stroke is good.  
The EFI four strokes have a lot of response at the initial crack of the throttle, especially with a re-mapped or aftermarket ECU.
 

Most of us would ride better with a SLOWER turn throttle. A nice slow pull mellow throttle cam applying small throttle openings will make you smoother, more control, use less energy and ultimately faster all around.
 

Good way for the cable to get jammed in your throttle housing, if it were to pop out of the groove. My 2 cents

I have the G2 quick turn and I love it. I was dealing with significant armpump issues and this was one of MANY things I tried to help it. The idea is your arm/wrist is in a much better position when using the quick turn throttle, thus reducing armpump and arm fatigue. My experience has been positive and I’ve had noticeable results. My .02

My 2005 Yz125 has roughly a quarter turn throttle, which I think is about perfect.

When I was a kid, throttles were half turn, and I hated re-gripping.

Today, I consider all throttles to be quick turn.

I’ve seen OP at the track.  He’s a fast local A rider.  Dude can handle it

Been down this path a few times. My two cents only.   Racers edge use to produce a throttle cable with inline reducer called a quixel.  It cut the throttle travel in half and was used on a 125 in the local A class.  Terrible arm pump and truly didn't realize the partial openings I used with the OEM setup.

Motion Pro with the biggest cam split the difference better.. don't put it on a 450 like me.

Larger cams on the odi offered a very small difference in travel.

I now personally take run stock OEM with the cable slack taken out.  Be very careful doing this and turn you bars to the stops to check. I have shorter arms and cut all of my bars..similar to what mxa refers to as opening a door knob. Also, wider bikes I found let me grip with my legs more and overgripping is easier with my hands being more free.

This is the truth!  Just bought the Motion Pro kit and installed it on my 350.  In order to test it I put on the biggest cam and went sand riding in FL.  Night and day difference at how easy and quick the bike could get wide open.  Worth every penny in my opinion.

A good friend of mine (Steve Lewis RIP) had a throttle tube company on the side called RollOn Throttles. It was not a perfect circle and it rolled on smooth with a smaller part of the reel turning it slower at first and then about half throttle it was on the largest part of the reel letting you get it wide open without dropping an elbow. 

Dude the big 50mm reel is nuts.  Even the 45mm one demands respect and control.  

For those talking about wanting it to be progressive or soft in the beginning, the Rev-3 kit has like 7 optional reels, including some tame, progressive ones.  That is the beauty of this kit, all the options.  Spare reels are only like $5 each.

Yep been messing about with quick turn throttles for a bit.

 A 3d printer and super glue can get you in enough trouble 😀.

For anyone modifying their throttle cams, you need to be extremely careful.  A lot of OEM throttle housings have just large enough of a gap between the reel and the housing for the cable to get caught up between them if it were to slip off.  It's not likely to happen with a stock reel because there are generally guides to keep the cable in place, but when you start adding raised areas or humps that aren't intended to be there you open up the opportunity for the cable to slip off and bind.  This may not happen in all housing, I'm just saying check this very carefully as a lot of stock throttle housings are terrible designs and bad quality.

With that said, the Motion Pro Rev 3 is hard to beat.  They have a new smooth wire throttle cable as well that comes in them and has an incredible feel to it, very much on par or better than an OEM cable.  I run the 50mm reel on my four strokes and love it, it's a great system.

My 23 mc350f came with a quick turn throttle cam. Ask buddies who have a new version of your bike they probably have one in their toolbox

Is there any bike maintenance that is Not a Danger if done incorrectly?

I think it was stated earlier in the thread, all the Austrian 4-strokes come with a gray (normal) cam in the bike and an optional black (quicker) cam.  Also, the 2023 and newer bikes (minus the 2023 GG's of course) both the gray and black cams are slightly bigger than the previous generation bikes.  All that being said, the gray ones are about 37mm and the black ones are about 39mm.  They are all very small compared to the 40-45-50mm reels that you can put in the Rev-3 system.  Anything that fits in the stock housing is not going to be very "quick" in the grand scheme of things.   

Yep agreed, be very careful when messing with throttle assemblies. The tube in my previous post has a modified housing and cable guides.