Atc125r

[firefirefire90]

Ok everybody, If my bottom end doesnt work on my ATC200x im done. IM just going to stick a cr125R motor in there(really hard but wutever) and anyone who needs a racing top end in the near future just pm me. Im fed up with this. Anyway a 125cc two stroke wud kill a 200x :demon:

[firefirefire90]

oh yeah, i forgot...how do u think u cud pu radiators on the 200x frame?:lmao:

[bigyellow4x4]

were there a will theres a way. get out the wilder and start in:headbang:

[NOS_350X]

i would say you just use one fat radiator off of like a 250.

Your going to have to drop it down under the tank a little and weld studs to the dowtube of the frame. Your also probably have to cut up your frame to work out the exhaust because the exhaust on the 125 i belive is going to come out higher than where the 200x came out.

[firefirefire90]

haha...oh well, i have the tools and my dad can weld. As long as it doesnt look like @$$ im fine with it...sepcially when i race some good atc 200x, we'll see. Hopefully i can get it done by Thanksgiving. Show some people up on the dunes. Oh well, 3 months. I know i read an article about a race prepped 125R, and the radiators were like on a 250R. What about the tecate radiators? they were out in front..dont want it too ugly though. give me your input on this.

[jenndnn3]

May I ask what is wrong with your bottom end??

[firefirefire90]

Hahah what isnt wrong with my botttom end. Well i can only shift into two gears, the kicker only goes a quarter of the way down and something has gone wrong with the clutch.

[Oldschoolin86]

Originally posted by firefirefire90
What about the tecate radiators?

Bingo!

[Mr. Richard]

BEEN THERE DONE THAT,,,, its a real easy swap,, cause the 125 motor is so small,, you only need one radiator ,, it will be kool on the flat ,, but it will suck with paddles ,,,125's have no bottom end ,, you are puttin it in a trike that weighs alot more and requires alot more hp to turn,,, no tree shots ,, with flat track tires on hard ground it will be fun,,, but it will be real limited .. i did this years ago on a flat track it was fast and fun,,, but thats where it ended,,, transmission is not built to haul that much weight and traction,,, so it won't last long ,,,, :D :D :D

[firefirefire90]

So what your saying, is it will be an awesome MX/flat track bike but will need a lot more power to haul it on the sand?

[84KXTtecate]

Originally posted by KASEY
BEEN THERE DONE THAT,,,, its a real easy swap,, cause the 125 motor is so small,, you only need one radiator ,, it will be kool on the flat ,, but it will suck with paddles ,,,125's have no bottom end ,, you are puttin it in a trike that weighs alot more and requires alot more hp to turn,,, no tree shots ,, with flat track tires on hard ground it will be fun,,, but it will be real limited .. i did this years ago on a flat track it was fast and fun,,, but thats where it ended,,, transmission is not built to haul that much weight and traction,,, so it won't last long ,,,, :D :D :D

Listinen to Kasey......Everything is true, little motor with no stroke equals no torque.

[firefirefire90]

that sucks, cant you change the gearing and just get it bored over to like 144 with a good piston and a shaved head?:D

[Mr. Richard]

how much $$$$$$ do you want to spend???? might as well look for a 250r

[firefirefire90]

money? eh...ive already spent about 350+ on this racing top end for the 200x...so you know if i can sell it hopefully get the same. About 400 to spend on 125? I mean i can finish the 200x, and with its looks maybe get...1400 out of it? If i could get pics im sure ya'll would be impressed. I just want a good performing trike. i don't think i could handle a 250R.

[350xsx]

Im in the midst of puttin a Tecate motor in what was my 350x, well its already in there and mounted, i couldnt figure out what to do with the rads myself, although i jus came up with an idea, i have the mounted on the left side under the tank sorta,, and i was gunna make a shroud for it and all, it looks kinda ugly but its alright i guess
i was jus wonderin if you guys could answer this for me,
If i put them where the airbox used to beon a 350X, inbetween the subframe would it run kool enough or would it need to get mre air, and howabout an electric fan, could i make this run off the motor w/o a battery? i dont have any lights running off it, so would that draw too much power?
Thanks
Kyle

[firefirefire90]

well now that you dont have any lights maybe you'll have that extra to run a fan...I dont really think you need one though. I mean look at people with racing bikes, no fans. It is really not needed.

[Mr. Richard]

I never seen anyone say so of nothing in along time,,,

the radiators need to be out where they get airflow,, or it will run hot,,,

[350xsx]

Originally posted by KASEY
I never seen anyone say so of nothing in along time,,,

the radiators need to be out where they get airflow,, or it will run hot,,,

yah i know but if i put them there with a fan and maybe an iintake or 2 that dumps onto them it will run cool enough, i'll have to get a lil temp gauge and test it out, but i dont even know what runninh hot would be on a 250 2stroke.... i know 180-220 is about where a truck is good at, but im guessin this would be different.....:shrug:

[350xsx]

Originally posted by firefirefire90
well now that you dont have any lights maybe you'll have that extra to run a fan...I dont really think you need one though. I mean look at people with racing bikes, no fans. It is really not needed.

Z400s and 450s have fans stock.....
and the other bikes arent running fans because the factory put them in a spot where it got plenty of airflow an designed the radiator to fit in that spot, i cant change my radiator so i have 2 places i can put it pertty much :(
Thanks
Kyle

[350xsx]

I dont mean to take your thread on ya i started a different thread on it.....

[firefirefire90]

oh it doesnt matter, seeing the low tourqe im not going to put a 125 in a 200x frame.

[NOS_350X]

Can you put paddles on a blaster? Well then i think the 125 would take them just fine, Dosent have any torque so you got to keep that engine reved but i think it would pull the paddles just fine.

[firefirefire90]

if i ever get a new frame i will prolly do that...seems easy enough.

[350xsx]

Originally posted by NOS_350X
Can you put paddles on a blaster? Well then i think the 125 would take them just fine, Dosent have any torque so you got to keep that engine reved but i think it would pull the paddles just fine.

nah, theres no replacement for displacement, youd be surprised what a difference 75cc's is, thats a lot of motor, especially in a smaller bore 2 stroke, the 125 wouldnt be able to handle 2 10" or so wide padles most likely, they dont handle 1 4-5" wide paddle to well on a dirtbike, youd never spin em....you would just tear up your motor way to quick

[NOS_350X]

Have you ever riden a blaster and a watercooled 125? Theres no comparasion. Its like comparing the diffrence between a watercooled and aircooled r. My 125 would have no problem pushing some 10"wide paddles. It would do alot better than any blaster.

[350xsx]

you think that because its in a dirtbike :rolleyes: my brothers old 125 seemedlike that too, but theres no torque there, put a wide soft terrain tire on that 125 of yours and go in the dunes and tell me how you cant spin just that with out struggle.......the tires might be smaller diameter ona quad, but the gearings also a lot taller also, think about it, your 125 is alway pinned and revved out, thats harder to do on a trike, because the tires wont spin enough to keep it wound out, sither way you should build up your 200x and later on when thats nice and powerful throw a 125 motor in another one if you find a chasis, and tell us how it does TT and track wise

[firefirefire90]

Well, this might happen soon. I am going to pick up a full 200x rolling chassie for 150 bucks. Sweet huh. My friend thrashed his yammy 125(wish it wus honda) so im gettin his motor an my 6 speed tranny for the 200x comes in two weeks! the 200x will be a show triek/weekend warrior. that 125 is gonna seriously take a beating...My dream comes true!:thumbsup: :lala:

[Oldschoolin86]

Originally posted by NOS_350X
Have you ever riden a blaster and a watercooled 125? Theres no comparasion. Its like comparing the diffrence between a watercooled and aircooled r. My 125 would have no problem pushing some 10"wide paddles. It would do alot better than any blaster. I agree. So you might have to use the clutch a little more or drop the gearing but a modern liquid 125 has more nuts then a blaster.

[slothminx]

Originally posted by Oldschoolin86
I agree. So you might have to use the clutch a little more or drop the gearing but a modern liquid 125 has more nuts then a blaster.

you will need to drop the gearing from whats on the bike as it will be way too high

[firefirefire90]

could you use the sprockets from a 200x? Seems good enough...

[bones200x]

This is my opinion. The 125 engine is weak. Yeah it puts out around 20 ish horse power. But there is no torque. My friend had a cr125. He had to have it wide open to do anything. I don't see wasting time.
If you have the $$$. Try putting a TRX450R engine in a 200X or 350X.. I think that would be AWESOME!!!!!!!! I'm not sure you could because of the radiator. But there is someone out there with enough dough to do it. A 400ex engine would be AWESOME too. just put a 12:1 piston in it. It would scream.
This is not a trike story.. My friend put a 12:1 piston and a webcam in his XR400. He has OUTRUN CRF250's, XR650, XR600, and one street bike (can't remember what is was).
Good luck.

[firefirefire90]

that would be sick. MR.ATC did that though. I guess it is pretty easy(in retrospec) to make a 2wheeler a 3wheeler. Just takes time huh .

[350xsx]

The radiators the easy part, its having welding skills and money, and a 400ex has an oil resorvoir so iits harder, youd have to ditch the airbox and mount it in the subframe or something to that effect, or put it up front and build a custom skid, but i say let him do what hes doin it is a good idea, 125s do have more balls isay, just not more torque

[Oldschoolin86]

Originally posted by 350xsx
The radiators the easy part, its having welding skills and money, and a 400ex has an oil resorvoir so iits harder, youd have to ditch the airbox and mount it in the subframe or something to that effect, or put it up front and build a custom skid, but i say let him do what hes doin it is a good idea, 125s do have more balls isay, just not more torque
The 400ex motor is harder due to the oil system but you wouldn't have to ditch the airbox, you can build it into the down tube. ;)

[Oldschoolin86]

Originally posted by bones200x
This is my opinion. The 125 engine is weak. Yeah it puts out around 20 ish horse power. But there is no torque.
You're about 10 off. Modern 125's are putting out just over 30hp.

[Troll]

I'd like to see the cr125cc conversion. Sounds real trick. Our 125 moto-X bike is a killer.
Hey, how about a cr480 ....hehee;
Hope the pic links
http://b.im.craigslist.org/UD/22/EVrrKyd4CjoBVBCGyazH7Se72fm3.jpg

[350xsx]

Im usin a cR480 motor in somethinnnnnnnnnn...:D im mad in a way that that happened o come up because people will think im copyin it even tho itll be totally different....lol its all good, that thing must fly in a 200X
haha thats funny, out there trucks dont even get rusty when they just sit for that long......

[firefirefire90]

We'll i got a new frame....But it has no numbers on it:confused: :bs: Whats this!?! look like they have been grinded off or something... :wtf: OH well, how hard did the 480 hook up? looks hard. Man i have to many projects on my mind. Oh well frame wus free :shrug:

[xcracer160]

and in some states if you get in any sort of trouble and have a frame with grownd down numbers its automaticaly coincidered stolen and you never see it again.

[350xsx]

Originally posted by xcracer160
and in some states if you get in any sort of trouble and have a frame with grownd down numbers its automaticaly coincidered stolen and you never see it again.

yep thats how it is herre, so dont do anything stupid with that bike, or punch in the numbers from another 200x you have cuz they wont know which your riding, maybe try to paint over em and get em a lil filled in so it doesnt look like you put the #s in, justr a thought, i know its teknikally not legal, but it can save you from losin a trike

[performula]

I think a 125cc three wheeler will be really trick. Everyone wants to go big, but something small and light would be cool. Those Cagivas and lower cc Tigers look they would have been fun to ride.

[firefirefire90]

can you bore a CR125 to 199cc? that would be REALLY trick.

[350xsx]

im sure you can get around there i know Eric Gorr sells big bore kits for CRs i dunno bout 125s, but why bore it out that much, reiability is gone and i dunno if theres enough cylinder wall there to do that :confused:

[firefirefire90]

Well then why did people bore out little 110ATCs to 199cc back in the day?

[350xsx]

ok, show me someone who would do that now, that and because there wasnt another option for them, the reliability dropped a drastic amount when they did that and it took its toll on the drivetrain and tranny, and Eric Gorr only sells 150 kits for 125s,
theres not a reason to go that high on a 125 cylinder when you have other options, and if you insist on doin thins at least get a stroker crank to compensate for some of it, and dontbore it out all the way to make it199cc's

[biggiefl]

Back in about 1985 my neighbor Chris made a trike out of a CR480. He made custom triple's and a 200x or 250R front rim. I forget what he did with the swingarm but I think it was stock with just some braces tig'd in. Modified I think a 250R fender and seat....RADICAL!

[firefirefire90]

Yes, you know I was also thinking if anyone had a used KTM 200 motor. Its 199cc two stroke I belive.

[350xsx]

sounds like a good idea :headbang:

[3on3250-R]

I put a 02 CR 80 engine In a 86 R frame for my boy to race at trikfest. The CR 80 also has very little torque. My boy weighs about 90 lbs & that little thing absolutly rips with him on It. If you did some port timing changes on the 125 you could help the bottom end quite a bit, but that would get costly. Alot of you guys have probly allready seen this 3 wheeler on 3 wheeler world. Anyway I think the 125 would be a cool ride & was thinking about doing that with my 87 CR 125 when my boy gets older.

[Chadster200x]

i was half tempted to throw in a 125 motor in my 200 but i found out that after ordering the taller gears and mod'ing the frame, in parts its really expensive$$$ especially if you want it to be reliable youll want to go with good stuff i mean its going to be relitively similar in power and speed with stock 200 gearing and plus itll only burn up gas faster than the 200. in reality theres no benifits except for the sound and the oh so sweet smell of a 2 stroke. plus itll be ALOT more than 400$$$...

[NOS_350X]

Yall realy need to sit back and look at the HP numbers the 125's are putting out. Its sad the 250F bikes have the same HP as the 450 quads. These new age small bore pingers SCREAM. Ya they have no torque, but a good rider never lets of the gass anyways.

[3on3250-R]

The horsepower Is great, the only thing I was thinking about Is the torque needed to pull out of a tight turn on a MX track Or woods race. I bet the new power valve set ups on the 125's would work pretty darn sweet. Would probly be worth It to give It a try If someone had a late model 125 engine laying around.