wiring a kmx 125 for off road use

rcooke25552 · 2 Weeks Ago

hi, i am 15 and have been rebuilding my kmx 125 for nearly a year now and spent towards £1000

. i need some information on completing the wiring. i have a wiring harness, a coil, pickup, magneto and i know that i need a CDI. is there anything else i need to get a spark and is it as simple as plug it in and were off or do i need to change anything.
thank you for your help.
rob

Ma77 · 2 Weeks Ago

for a spark all you need is the high voltage magneto winding (not the charging windings), the pickup, the CDI and coil (HT lead and plug obviousley)

a 12v source is not needed power for the CDI and coil comes from the high voltage magneto windings (300 to 400v ac (ish))

hope this helps... now i need help with my kmx rebuild...

where do the 3 carb overflow pipes, tank breather pipe, gearbox crankcase breather pipe, oil tank breather pipe and coolant tank overflow pipe go?

thanks

Ma77 · 2 Weeks Ago

rcooke25552 · 2 Weeks Ago

to be honest mate, im just looking at my carb now and i am not sure... i will have a look at my uncles trials bike this weekend if i can cause i no his carb has 3 overflows and 1 from the crankcase. i presume they just need to be out of the way were it wont matter.
will let you know

rcooke25552 · 2 Weeks Ago

sorry forgot to mention, fuel tank breather pipe (i presume you mean the one coming from the cap) goes down the stem on the yokes.

Ma77 · 2 Weeks Ago

ok thanks... out of the way is sort of how i have them but theres 7 pipe dangling infront of the rear wheel atm and its not looking tidy lol

Ma77 · 2 Weeks Ago

no there is one at the bottom of the tank....dont worry about that one i have a different cap no so it is sorted

rcooke25552 · 2 Weeks Ago

lol. erm dunno were to suggest to put them... dont suppose you no of anywere i can get some parts fairly cheap. . spent nearly a thousand pound on this and the heart breaking thing is that it will prob only sell for 450 tops if i sell.

rcooke25552 · 2 Weeks Ago

if im correct in thinking.... the one at the bottom of the tank runs straight up and through the tank to the top near the cap. i think that it will jus need a short piece on it and perhaps tie it to the carb overflows. . . have a look in the tank and just confirm that.

Ma77 · 2 Weeks Ago

depends what you after... i have spent 400 on mine and is reckoned to be a grands worth now although there must be hundreds of hours spent on it.... supermoto conversion is the way to go.

what you having trouble with?

rcooke25552 · 2 Weeks Ago

need....
the rod that runs through the cylinder for the powervalve
plastics
cdi
exhaust

i know i can get a few of them on ebay but cant get the rod an plastics.

Ma77 · 2 Weeks Ago

can only really say keep an eye on ebay... and dont give up on it will make an ace first bike (if you are gonna get it on the road).

mine is geared down so top speed is only about 55 - 60 mph but it will get there so insanley quick and lift the front wheel in 1st 2nd and 3rd gear lol

mates on there 400's get ****ed off lol

rcooke25552 · 2 Weeks Ago

ok will do. . . i hope it is.... not on road im only 15 and also i bought it as stolen recovered so has no frame number therefore cant go on road. jus got to run it into the ground but my true dream is a trials bike like my uncles. . . check this out

http://www.tmxnews.co.uk/cms_media/images/gasgas4.jpg

thats the one i would love

Ma77 · 2 Weeks Ago

thats very nice, would be great to hone your bike skills on.

what bike does your dad have,i got an old montesa cota trials bike but needs alot of attention,

have fun riding and gd luck with the kmx

rcooke25552 · 2 Weeks Ago

dont speak to my dad its my uncle really who has got me into bikes. . if you were intrested in selling i would be intrested as i want a trials as a project and i plan to buy one after kmx anyway. my uncle has a 300cc gas gas raga (like the one in the pic but last years) and my cousin has the gas gas txt pro 125cc. i like them both but the front comes up too easy on the 300 and it aches your arms after a while. any more info on that montessa if you would be intrested.
thanks

Ma77 · 2 Weeks Ago

sorry not gonna sell it, i wanna sort it out really

rcooke25552 · 2 Weeks Ago

good luck with it mate... never rode a crosser but i love the buzz you get from trials. i think you will enjoy it.

2 Weeks Ago	#1 (permalink)
rcooke25552 Newbie Join Date: Nov 2009 Posts: 12	wiring a kmx 125 for off road use hi, i am 15 and have been rebuilding my kmx 125 for nearly a year now and spent towards £1000 . i need some information on completing the wiring. i have a wiring harness, a coil, pickup, magneto and i know that i need a CDI. is there anything else i need to get a spark and is it as simple as plug it in and were off or do i need to change anything. thank you for your help. rob

2 Weeks Ago	#3 (permalink)
Ma77 Newbie Join Date: Oct 2009 Posts: 10	Last edited by Ma77 : 2 Weeks Ago at 05:18 PM.

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2 Weeks Ago	#2 (permalink)
Ma77 Newbie Join Date: Oct 2009 Posts: 10	for a spark all you need is the high voltage magneto winding (not the charging windings), the pickup, the CDI and coil (HT lead and plug obviousley) a 12v source is not needed power for the CDI and coil comes from the high voltage magneto windings (300 to 400v ac (ish)) hope this helps... now i need help with my kmx rebuild... where do the 3 carb overflow pipes, tank breather pipe, gearbox crankcase breather pipe, oil tank breather pipe and coolant tank overflow pipe go? thanks

2 Weeks Ago	#4 (permalink)
rcooke25552 Newbie Join Date: Nov 2009 Posts: 12	to be honest mate, im just looking at my carb now and i am not sure... i will have a look at my uncles trials bike this weekend if i can cause i no his carb has 3 overflows and 1 from the crankcase. i presume they just need to be out of the way were it wont matter. will let you know

2 Weeks Ago	#5 (permalink)
rcooke25552 Newbie Join Date: Nov 2009 Posts: 12	sorry forgot to mention, fuel tank breather pipe (i presume you mean the one coming from the cap) goes down the stem on the yokes.

2 Weeks Ago	#6 (permalink)
Ma77 Newbie Join Date: Oct 2009 Posts: 10	ok thanks... out of the way is sort of how i have them but theres 7 pipe dangling infront of the rear wheel atm and its not looking tidy lol

2 Weeks Ago	#7 (permalink)
Ma77 Newbie Join Date: Oct 2009 Posts: 10	no there is one at the bottom of the tank....dont worry about that one i have a different cap no so it is sorted

2 Weeks Ago	#8 (permalink)
rcooke25552 Newbie Join Date: Nov 2009 Posts: 12	lol. erm dunno were to suggest to put them... dont suppose you no of anywere i can get some parts fairly cheap. . spent nearly a thousand pound on this and the heart breaking thing is that it will prob only sell for 450 tops if i sell.

2 Weeks Ago	#9 (permalink)
rcooke25552 Newbie Join Date: Nov 2009 Posts: 12	if im correct in thinking.... the one at the bottom of the tank runs straight up and through the tank to the top near the cap. i think that it will jus need a short piece on it and perhaps tie it to the carb overflows. . . have a look in the tank and just confirm that.

2 Weeks Ago	#10 (permalink)
Ma77 Newbie Join Date: Oct 2009 Posts: 10	depends what you after... i have spent 400 on mine and is reckoned to be a grands worth now although there must be hundreds of hours spent on it.... supermoto conversion is the way to go. what you having trouble with?

2 Weeks Ago	#11 (permalink)
rcooke25552 Newbie Join Date: Nov 2009 Posts: 12	need.... the rod that runs through the cylinder for the powervalve plastics cdi exhaust i know i can get a few of them on ebay but cant get the rod an plastics.

2 Weeks Ago	#12 (permalink)
Ma77 Newbie Join Date: Oct 2009 Posts: 10	can only really say keep an eye on ebay... and dont give up on it will make an ace first bike (if you are gonna get it on the road). mine is geared down so top speed is only about 55 - 60 mph but it will get there so insanley quick and lift the front wheel in 1st 2nd and 3rd gear lol mates on there 400's get ****ed off lol

2 Weeks Ago	#13 (permalink)
rcooke25552 Newbie Join Date: Nov 2009 Posts: 12	ok will do. . . i hope it is.... not on road im only 15 and also i bought it as stolen recovered so has no frame number therefore cant go on road. jus got to run it into the ground but my true dream is a trials bike like my uncles. . . check this out http://www.tmxnews.co.uk/cms_media/images/gasgas4.jpg thats the one i would love

2 Weeks Ago	#14 (permalink)
Ma77 Newbie Join Date: Oct 2009 Posts: 10	thats very nice, would be great to hone your bike skills on. what bike does your dad have,i got an old montesa cota trials bike but needs alot of attention, have fun riding and gd luck with the kmx

2 Weeks Ago	#15 (permalink)
rcooke25552 Newbie Join Date: Nov 2009 Posts: 12	dont speak to my dad its my uncle really who has got me into bikes. . if you were intrested in selling i would be intrested as i want a trials as a project and i plan to buy one after kmx anyway. my uncle has a 300cc gas gas raga (like the one in the pic but last years) and my cousin has the gas gas txt pro 125cc. i like them both but the front comes up too easy on the 300 and it aches your arms after a while. any more info on that montessa if you would be intrested. thanks

2 Weeks Ago	#16 (permalink)
Ma77 Newbie Join Date: Oct 2009 Posts: 10	sorry not gonna sell it, i wanna sort it out really

2 Weeks Ago	#17 (permalink)
rcooke25552 Newbie Join Date: Nov 2009 Posts: 12	good luck with it mate... never rode a crosser but i love the buzz you get from trials. i think you will enjoy it.

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