taming it down

dank

dank

New member
ok i didnt know weather this should go in jetting or not, but a friend of mine is looking at buying a bike for woods riding. right now we're looking at kx100's, kx 125's and maybe a gasgas 125 or 200. i told her i'd help her get her bike set up for her, one of those things being making the bike usable for a beginner. when i bought my bike (my first btw) it had g2 throttle cams with it, which have been a life saver on more than one occasion, so im thinking a set of those would be good. im also thinkin that going for lower that stock gearing may be a good idea too. is there any other things we can do to make the bikes easier to ride? it'll be alot of low rpm running as she first starts out so what would we have to do to the jetting so that it wont stall at low rpm but wont throw her on her back at the same time? any other suggestions? shes about 5'7" or so and about 130ish?lbs. and most of the riding will be in more tight technical woods.
 
Bigger power valve cover, Gnarly pipe, and a looser power valve spring.
And go a bit rich with jetting. Oh and if you have a bit too much money a smaller carburetor adds low rpm power and cuts off from the top.
That's pretty much all I think :confused:
 
hmmm..... i considered finding a smaller carb, but as far as the ec200 goes i dont know what size they come with. its either a 36 or a 38mm, if its a 38 id go down to a 36. the kx100 has a 28mm, but i dont know what brand. hmmmm thats a heck of an idea. thanks much!
 
The easiest, lowest cost way to tame a a small bore 2T is put a flat washer between the pipe and the cylinder that restricts the exhaust.

I have done it for my sons KX65. It makes amazingly linear power, stills revs to the moon and makes decent top end. It takes away the hit. He rides very gnarly technical trails. When he is ready, I will install a slightly bigger washer which gives it a slight hit.

I also did it on the KX100 when my wife was riding it. It did the same thing - smooth out the power delivery.

Measure the inside of your cylinder and pipe, then go down the hardware store. For a few dollars you can get a few different sized washers to try out.
 
hmmm never heard of that one.... that kindof like changing the powervalve springs on a ktm, only a little more crude?
 
got a line on a good kx100 that we can get for a dang good price, so were focused down to that. is there any other difference between a kx 85 and a kx 100 besides bigger bore and stroke? because i'd like to find her a g2 throttle cam set, but they dont list the 100. or a ktm 105 for that matter. i thought that rather strange.
 
Plus an 85 has such a small bore that it will only make power up top. That means more frequent rebuilds. KX 100 is not a bad beginner bike, as long as she understands that she will out grow it. A KX100 does not need a throttle cam. Do the washer mod that someone else mentioned and be done with it.

Or not.

There are a ton of chicks that learned and still race unmodded KX100s. There is a bigger accessory tank, if needed.

If the price is that good. Buy it and ride it. No mods, no tuning, nothing. Ride it.
 
stainlesscycle said:
isn't kx100 16/19 wheels? you would think you'd want a full size frame/wheelset....
Click to expand...

Actually, KX100s and KTM 105s are pretty popular chick bikes. The smaller frame/wheels are only a disadvantage when hopping logs or rocks. Otherwise the smaller size/lighter weight is easier to for folks with smaller statures to ride.

There are a couple of adult KX100 riders in my enduro series. Other than the small gas tank (they are too cheap to get the bigger tank), they both really like them.
 
was also thinkin about a big tank and a flywheel weight. its going to be a woods bike, so anything i can do to make it so she wont loop out will help alot.
 
My learning is that to make a good beginner bike it needs to be tamed way down so it will be boring to you. Once they get scared of abrupt power delivery the fun disappears, followed quickly by their interest in riding. I went through this with my wife on a KX100 and she has no interest in trying to learn to ride a motorcycle.

I used the tame it down approach with my son when he was 7 and just learning to ride a KX65. It has worked out very well. The engine power delivery is very smooth (thanks to just an $0.85 washer) and at age 8 he rides some very technical woods trails, even when the clay mud, roots and logs are greasy wet. Most importantly he is having FUN!
 
The KX100 sounds like the perfect beginner bike Dank. I would follow Eric's advice about the washer to tame it down for her.
 
im thinkin thats a great idea. thanks guys! were hoping to go look at the bike sometime in the near future.
 
Ditto with Eric K.'s note above. KX100 not a good rank beginner chick bike.

If you want her to actually enjoy it , so she will stick with it, bite the
bullet and get a CRF150F or CRF230F with an electric starter.

This will be great (even though WE would not want to ride one of these
overweight, poorly suspended foo-foo bikes) it is better for HER for a little while, until she can maneauver thru woods and such, and can work the clutch and brakes.
One of the biggest problems of a rank beginner has is stalling the bike
in the woods, and starting it up again after a spill. To make it easy to get started again so they can keep up better, the electric starter is a boon. (Hmmmm .... 450 4-strokes have them...)

Then sell the bike and get something better after a few months. Even tho U
lose a few $$$, its well spent. JMHO (been there, done that)
 
i spoke to my girlfriend about her first two bikes. her first was a ttr230, which she absolutely hated. it was heavy and awkward to ride. they sold it shortly after their first ride with it. next was a kx100, which she loved because while it did tend to stall easier, it was lower so she could get her feet down, and it was lighter, so falling over wasnt a big deal. i have talked it over with jenna and she decided to take less weight and more stalling over more weight.
 
we have considered it, we will see if it is a problem or not before we put the money down for it. we also considered dropping a tooth on the front sprocket if necessary, but we will see what it does before we change anything
 
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