Planet Minis

uno4cinco · 02-28-2007, 05:36 PM

will a gpx motor fit into a 1970 CT70? I have a $1000 budget for this build, I dont want to blow most of it on a motor.

Derekz93 · 02-28-2007, 05:42 PM

Just slob on th knob chase. I mean...uniCorn

tmas · 02-28-2007, 05:43 PM

I believe it will..... but the CT has a 6 volt system and the GPX is a 12 volt CDI system.
If you want lights to work you will have to install a lightning coil on the GPX motor.
You willl have to get a new wiring harness with it that has the CDI, voltage regulator ect. plugs.
tmas

uno4cinco · 02-28-2007, 05:47 PM

right, i knew that the older one was a 6volt. do you know where or who i can get a new wiring harness with a cdi, volt reg etc. from?

a gpx seems like a pretty good way to go, most chinese engines already have the stuff for electric too.

tmas · 02-28-2007, 05:59 PM

Quote:

Originally Posted by uno4cinco

do you know where or who i can get a new wiring harness with a cdi, volt reg etc. from?

Maybe find a harness on ebay? Make your own? Talk to a few vendors, maybe they have one? Do you want all the lights and turn signals and headlight to work?
tmas

uno4cinco · 02-28-2007, 06:05 PM

yeah pretty much. i want that motor or a lifan, and i was looking at a friend of mines china motor and it has the 5 wires that come out of the case (ground and other wires for lights) so i figure i can get one of those and bolt it on?

are the CRF and chinese ignitions such as that on a GPX interchangable?

general_lee01 · 02-28-2007, 06:14 PM

post some pics of it

uno4cinco · 02-28-2007, 06:23 PM

i will when i get home, its in need of some love for sure. i got the motor idea sorter out. im going to go with a Jailing and a high comp piston and cam in it.

My next dilemma is getting the lights to work with a 12 volt motor, who has done this? what problems am i going to run into and what parts am i going to need and who and where can i get them from? once again, convertine 6 volt stuff to 12 volt.

Z · 02-28-2007, 06:48 PM

You are going to have to lower the footpegs so they don't hit the cases. Use spacers.

You'll need to convert all your bulbs to 12V, you'll have to run a 12V battery, coil and voltage regulator. Dratv has some information on the conversion.

there will be little snags here and there, but with some patience and a good set of wiring diagrams, you'll work through it.

Dan

uno4cinco · 02-28-2007, 09:08 PM

thanks dan, does DR.atv also sell the parts?

makotosun · 03-01-2007, 05:56 AM

http://cgi.ebay.com/ebaymotors/LIFAN...mZ150096747297

This includes all the lights (front, rear, blinkers), engine electrics, headlight shell, speedo, horn, keys, handlebar controls, etc, etc, etc. Good seller too. I got one of these for my upcoming conversion, as i already had the motor. Really hard to beat for the price.

symp · 03-01-2007, 06:44 AM

dr.atv sells everything you need for a conversion, and has diagrams and such like dan said

tmas · 03-01-2007, 08:37 AM

Quote:

Originally Posted by makotosun

http://cgi.ebay.com/ebaymotors/LIFAN...mZ150096747297

This includes all the lights (front, rear, blinkers), engine electrics, headlight shell, speedo, horn, keys, handlebar controls, etc, etc, etc. Good seller too. I got one of these for my upcoming conversion, as i already had the motor. Really hard to beat for the price.

Thats a nice package for the price.
tmas

uno4cinco · 03-01-2007, 04:12 PM

yeah, not sure if i am going to do a lifan kit anymore, i can get a good deal on a jailing so i may go that route, i image that kit would people fit on a lifan right?

d0n · 03-01-2007, 04:24 PM

Quote:

Originally Posted by makotosun

http://cgi.ebay.com/ebaymotors/LIFAN...mZ150096747297

This includes all the lights (front, rear, blinkers), engine electrics, headlight shell, speedo, horn, keys, handlebar controls, etc, etc, etc. Good seller too. I got one of these for my upcoming conversion, as i already had the motor. Really hard to beat for the price.

Very complete! I wonder why they include a gas cap? What's it fit? I'm curious what the speedo cable hooks to on the front wheel? I'm assuming it just attaches to a bike that already has the speedo gear on the hub? If the bike doesn't have a speedo gear then you're kinda screwed?

dirtbkr188 · 03-01-2007, 04:40 PM

d0n,

Here is a pic of a CT70 front hub/brake panel, and the speedo cable threads into the hole just to the right of the front axle in the pic.

d0n · 03-03-2007, 11:37 AM

cool I wonder what other hondas that hub would fit into? XR70 maybe?

dirtbkr188 · 03-03-2007, 04:56 PM

I can give it a test-fit on a CRF70 front wheel, d0n, and get back you with the results.

d0n · 03-03-2007, 05:29 PM

Thanks! dont kill yourself. I'm curious though. It would be cool to have a speedo on my dirtbike. There must be more to it. Maybe a gear inside on the ct axle?

dirtbkr188 · 03-04-2007, 03:17 PM

d0n,

The CT70 hub isn't compatible with the CRF70 wheel I have here, it wouldn't work at all.

It appears as though the cable is driven by a worm gear inside the brake panel itself, and there is a ring-type gear with drive pins on it, the CT hub engages that, and turns the worm gear.

02-28-2007, 05:36 PM	#1 (permalink)
uno4cinco 3rd Gear Member Join Date: Sep 2005 Location: Moorpark, Ca Posts: 1,342	ct project, need help will a gpx motor fit into a 1970 CT70? I have a $1000 budget for this build, I dont want to blow most of it on a motor.

03-01-2007, 05:56 AM	#11 (permalink)
makotosun 2nd Gear Member Join Date: Apr 2005 Location: Washington (southwest) Posts: 510 My Mood:	Everything you need. http://cgi.ebay.com/ebaymotors/LIFAN...mZ150096747297 This includes all the lights (front, rear, blinkers), engine electrics, headlight shell, speedo, horn, keys, handlebar controls, etc, etc, etc. Good seller too. I got one of these for my upcoming conversion, as i already had the motor. Really hard to beat for the price.

03-04-2007, 03:17 PM	#20 (permalink)
dirtbkr188 3rd Gear Member Join Date: May 2004 Location: New Jersey Posts: 2,972	d0n, The CT70 hub isn't compatible with the CRF70 wheel I have here, it wouldn't work at all. It appears as though the cable is driven by a worm gear inside the brake panel itself, and there is a ring-type gear with drive pins on it, the CT hub engages that, and turns the worm gear. Last edited by dirtbkr188; 03-04-2007 at 03:19 PM.

02-28-2007, 05:42 PM	#2 (permalink)
Derekz93 3rd Gear Member Join Date: Oct 2005 Location: Moorpark California Posts: 1,332	Just slob on th knob chase. I mean...uniCorn

02-28-2007, 05:43 PM	#3 (permalink)
tmas ZB50 Jedi Join Date: Apr 2005 Location: Toronto Posts: 4,108	I believe it will..... but the CT has a 6 volt system and the GPX is a 12 volt CDI system. If you want lights to work you will have to install a lightning coil on the GPX motor. You willl have to get a new wiring harness with it that has the CDI, voltage regulator ect. plugs. tmas

02-28-2007, 05:47 PM	#4 (permalink)
uno4cinco 3rd Gear Member Join Date: Sep 2005 Location: Moorpark, Ca Posts: 1,342	right, i knew that the older one was a 6volt. do you know where or who i can get a new wiring harness with a cdi, volt reg etc. from? a gpx seems like a pretty good way to go, most chinese engines already have the stuff for electric too.

02-28-2007, 06:05 PM	#6 (permalink)
uno4cinco 3rd Gear Member Join Date: Sep 2005 Location: Moorpark, Ca Posts: 1,342	yeah pretty much. i want that motor or a lifan, and i was looking at a friend of mines china motor and it has the 5 wires that come out of the case (ground and other wires for lights) so i figure i can get one of those and bolt it on? are the CRF and chinese ignitions such as that on a GPX interchangable?

02-28-2007, 06:14 PM	#7 (permalink)
general_lee01 2nd Gear Member Join Date: Dec 2006 Location: OHIO Posts: 452	post some pics of it

02-28-2007, 06:23 PM	#8 (permalink)
uno4cinco 3rd Gear Member Join Date: Sep 2005 Location: Moorpark, Ca Posts: 1,342	i will when i get home, its in need of some love for sure. i got the motor idea sorter out. im going to go with a Jailing and a high comp piston and cam in it. My next dilemma is getting the lights to work with a 12 volt motor, who has done this? what problems am i going to run into and what parts am i going to need and who and where can i get them from? once again, convertine 6 volt stuff to 12 volt.

02-28-2007, 06:48 PM	#9 (permalink)
Z 5th Gear Member Join Date: Sep 2003 Location: KANSAS Posts: 8,540	You are going to have to lower the footpegs so they don't hit the cases. Use spacers. You'll need to convert all your bulbs to 12V, you'll have to run a 12V battery, coil and voltage regulator. Dratv has some information on the conversion. there will be little snags here and there, but with some patience and a good set of wiring diagrams, you'll work through it. Dan

02-28-2007, 09:08 PM	#10 (permalink)
uno4cinco 3rd Gear Member Join Date: Sep 2005 Location: Moorpark, Ca Posts: 1,342	thanks dan, does DR.atv also sell the parts?

03-01-2007, 06:44 AM	#12 (permalink)
symp 1st Gear Member Join Date: Jun 2006 Posts: 206	dr.atv sells everything you need for a conversion, and has diagrams and such like dan said

03-01-2007, 04:12 PM	#14 (permalink)
uno4cinco 3rd Gear Member Join Date: Sep 2005 Location: Moorpark, Ca Posts: 1,342	yeah, not sure if i am going to do a lifan kit anymore, i can get a good deal on a jailing so i may go that route, i image that kit would people fit on a lifan right?

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

03-01-2007, 04:40 PM	#16 (permalink)
dirtbkr188 3rd Gear Member Join Date: May 2004 Location: New Jersey Posts: 2,972	d0n, Here is a pic of a CT70 front hub/brake panel, and the speedo cable threads into the hole just to the right of the front axle in the pic.

03-03-2007, 11:37 AM	#17 (permalink)
d0n 3rd Gear Member Join Date: Nov 2005 Location: Troy NY Posts: 2,172	cool I wonder what other hondas that hub would fit into? XR70 maybe?

03-03-2007, 04:56 PM	#18 (permalink)
dirtbkr188 3rd Gear Member Join Date: May 2004 Location: New Jersey Posts: 2,972	I can give it a test-fit on a CRF70 front wheel, d0n, and get back you with the results.

03-03-2007, 05:29 PM	#19 (permalink)
d0n 3rd Gear Member Join Date: Nov 2005 Location: Troy NY Posts: 2,172	Thanks! dont kill yourself. I'm curious though. It would be cool to have a speedo on my dirtbike. There must be more to it. Maybe a gear inside on the ct axle?