alrighty i got a couple qeustions.i have a 03cr85r expert right now and am thinking about the kx100.what is some major differences?and what is faster?my bike has a couple things done to it just common get ready to race stuff.pipe and so on.and the kx 100s i am looking at are 04 i think they are both all stock and low hours im more then likely going to race mx this summer.what bike is better and ill be doing some trails.and what race class would i have to be in?would they stick me with the 125s and if so will this bke keep up just as good with a good rider?in a drag would a kx100 come close to a kx 125.(sorry about all the questions but theyres alot to know.)thanks for all the help who ever gives it to me. :whoa:
kx 100
- Thread starter cr85re
- Start date
A KX100 is just a big wheel 85 with a bigger bore. They have about the same peak HP as an 85, but they have more power at rpms other than peak, so they are generally easier to ride. A drag race between an 85 and a 100 is going to be tight, particularly if the 85 is tarted up and the 100 is stock. The 100 will be better on trails, because it will have more low end power with about the same mid and top end.
I don't know about the race class - do they have supermini where you race?
100 vs 125 drag race the 100 might stay tight if you are light weight enough compared to the rider of the 125 - the 100 itself is a whole lot lighter than a 125, so really light rider on 100 may have better power to weight ratio than bigger rider on 125.
The 125 will have more suspension travel and bigger tires. There are people who compete against 125s and win on 100s, but in general, the 125 is an equipment advantage due to better suspension.
I don't know about the race class - do they have supermini where you race?
100 vs 125 drag race the 100 might stay tight if you are light weight enough compared to the rider of the 125 - the 100 itself is a whole lot lighter than a 125, so really light rider on 100 may have better power to weight ratio than bigger rider on 125.
The 125 will have more suspension travel and bigger tires. There are people who compete against 125s and win on 100s, but in general, the 125 is an equipment advantage due to better suspension.
blackedoutcr125
Member
- Jun 22, 2007
- 31
- 0
yes thats what he means, beginning of each gear that is, unless you know how to keep it in powerband then you dont need to even worry about that.
whats your weight and height?
whats your weight and height?
Keep in mind that if there is no supermini class, then the KX100 would indeed bump up to the 125 class where you'd be racing against 250F's, too. Also, if you're racing amateur level I believe the 2 strokes in the "125 class" can now be up to 153cc. A KX100 isn't going to have near the power or torque of a 153cc 2 stroke or a 250cc 4 stroke.
When I've ridden my daughter's KX100, a big factor is also the larger wheels of the full sized bikes. Even on trails it can be the difference between dropping into a hole or going over it.
If you didn't have a bike or were moving up from a 65cc, the KX100 would make a lot more sense, especially since it has a power valve, unlike your CR. But since you have a CR85 Expert, I'd try to amp it up to get by a little longer until you're ready for the next bigger sized bike.
When I've ridden my daughter's KX100, a big factor is also the larger wheels of the full sized bikes. Even on trails it can be the difference between dropping into a hole or going over it.
If you didn't have a bike or were moving up from a 65cc, the KX100 would make a lot more sense, especially since it has a power valve, unlike your CR. But since you have a CR85 Expert, I'd try to amp it up to get by a little longer until you're ready for the next bigger sized bike.
From the updated rules for next year, from the AMA site..
Proposal #59: Chapter 4, Section S, Paragraph 2A, Page 45: Complete class
listing of approved amateur class structure for AMA Motocross events. All
classes are approved for competition and promoters must advertise any classes
to be run. All classes must have a minimum wheel base of 53" (except Women’s
class). All classes may be divided into A, B and C skill levels at the promoter’s
discretion.
CLASS NAME DISPLACEMENT RULES
125cc 122cc - 125cc 2-Stroke
250cc 122cc-250cc
Open 122cc-Open cc
14-24 122cc-Open cc
Plus 25 122cc-Open cc
Vet Plus 30 122cc-Open cc
Vet Plus 35 122cc-Open cc
Senior Plus 40 122cc-Open cc
Senior Plus 45 122cc-Open cc
Senior Plus 50 122cc-Open cc
Women (12+) 99cc-250cc Approved.
Proposal #59: Chapter 4, Section S, Paragraph 2A, Page 45: Complete class
listing of approved amateur class structure for AMA Motocross events. All
classes are approved for competition and promoters must advertise any classes
to be run. All classes must have a minimum wheel base of 53" (except Women’s
class). All classes may be divided into A, B and C skill levels at the promoter’s
discretion.
CLASS NAME DISPLACEMENT RULES
125cc 122cc - 125cc 2-Stroke
250cc 122cc-250cc
Open 122cc-Open cc
14-24 122cc-Open cc
Plus 25 122cc-Open cc
Vet Plus 30 122cc-Open cc
Vet Plus 35 122cc-Open cc
Senior Plus 40 122cc-Open cc
Senior Plus 45 122cc-Open cc
Senior Plus 50 122cc-Open cc
Women (12+) 99cc-250cc Approved.
The others more than adequately answered questions regarding bore and displacement, power, racing rules comparing cr85e vs 100 vs 125. If the information didn't satisfy your question you could start over by completing all these questions on the form below, then posting it in the what bike do I get forum:cr85re said:
http://dirtrider.net/forums3/showthread.php?t=108916
It may be that you need to think more broadly about what bike to get next.
(You may also want to read this:
http://dirtrider.net/forums3/showthread.php?t=50636)
and yes, unfortunately, spelling counts. :fft:
- Thread starter
- #11
1) your physical size (both height and weight are important)im 5,8 and 150 pounds
2) How physical / aggressive are you ?um im pretty physical and id say 1-10 a 9 on aggresive
3) what do you plan to ride- MX/SX tracks, woods, fields with friends or ?????x.hare scrambles,and practicing round my house-trails and jumps,mainly mx though
4) Do you have any riding experience?1 1/2 years.
5) Do you think you will race ?oh yeah
6) Are you mechanically inclined and will you be doing your own bike work?some what and i get help from people i know.
7) Do YOU have a preferance to a brand/ motor choice (2 or 4 stroke)?umm.2-stroke
8) Do you have a dealer close by your home that you might use and what brand(s) does he carry?honda.i think he has random bikes so pretty much everythang
9) How much ($) do you plan to spend on a bike?1500-2000
10) Do you live in California?nope
11) Your age?14
12) anything else that you think would help form an opinion.um i want a bike that i can race but has alot of balls.like a cant race a 2-stroke 250 around here.
This info won't guarentee a perfect bike choice but it will sure stear the answers you get closer to the ideal bike.
2) How physical / aggressive are you ?um im pretty physical and id say 1-10 a 9 on aggresive
3) what do you plan to ride- MX/SX tracks, woods, fields with friends or ?????x.hare scrambles,and practicing round my house-trails and jumps,mainly mx though
4) Do you have any riding experience?1 1/2 years.
5) Do you think you will race ?oh yeah
6) Are you mechanically inclined and will you be doing your own bike work?some what and i get help from people i know.
7) Do YOU have a preferance to a brand/ motor choice (2 or 4 stroke)?umm.2-stroke
8) Do you have a dealer close by your home that you might use and what brand(s) does he carry?honda.i think he has random bikes so pretty much everythang
9) How much ($) do you plan to spend on a bike?1500-2000
10) Do you live in California?nope
11) Your age?14
12) anything else that you think would help form an opinion.um i want a bike that i can race but has alot of balls.like a cant race a 2-stroke 250 around here.
This info won't guarentee a perfect bike choice but it will sure stear the answers you get closer to the ideal bike.
im 5'8,120lbs and i ride a 125. you will have more control on the 100 but you might be a tad faster on a 125. it seems like if you choose the 100 class you will be racing 125s anyways so why not try both and see, ask anybody you know who has a 100 and ride it and see how it goes. thats the only real way to find out if the bike is for you.
