Project: Terranex 600F3
#1
Project: Terranex 600F3
So, you are asking yourself what the hell is a Terranex? It is an off-road go-kart that comes stock with a single cylinder 250cc engine based on the Honda CN250 engine. Since getting the kart, I have loved every aspect except for the 250 and the lackluster performance. I chalk that up the gear-head in me. I have quite a bit of mechanical experience and thought to myself "why not simply drop in a cycle engine"? My only problem with planning this project is a lack of knowledge with motorcycle engines and system and thus why I am posting this here. I will need help on identifying things and thus will often be asking questions ... please excuse the noodness of some of these questions.
Fast forward 2 years and here I am with a 98 600F3 engine that I picked up from eBay. The previous owner says it is a 636 (with a stroker kit???), but the stock numbers compared to the existing 250 will do just fine. Anything beyond the stock numbers on this engine is just icing on the cake!
Noob question 1) do these transmissions have reverse? If you could explain the trans operation is great detail, that would be awesome and greatly appreciated.
The reason for asking is that the kart comes with a F/N/R selector for the CVT trans that will need to be retained if the 600F3 trans does not have reverse. I will then have to simply add a trans selector in addtion to the differential unit F/N/R selector and a clutch pedal. Below are pics showing the 600F3's new home and the trans reversing housing.
Now for some pictures
Fast forward 2 years and here I am with a 98 600F3 engine that I picked up from eBay. The previous owner says it is a 636 (with a stroker kit???), but the stock numbers compared to the existing 250 will do just fine. Anything beyond the stock numbers on this engine is just icing on the cake!
Noob question 1) do these transmissions have reverse? If you could explain the trans operation is great detail, that would be awesome and greatly appreciated.
The reason for asking is that the kart comes with a F/N/R selector for the CVT trans that will need to be retained if the 600F3 trans does not have reverse. I will then have to simply add a trans selector in addtion to the differential unit F/N/R selector and a clutch pedal. Below are pics showing the 600F3's new home and the trans reversing housing.
Now for some pictures
#2
RE: Project: Terranex 600F3
I always liked those off road go carts... that thing is going to RIPPPP when you get the f3 engine in there... now to the questions.
1. Not sure what a stock kit is, but the f3 motor is 600cc not 636cc unless he put a big bore kit on there
2. there is no reverse on the transmition
Not very mechanically inclined so i cant help on the technical aspect but hope i helped a little
1. Not sure what a stock kit is, but the f3 motor is 600cc not 636cc unless he put a big bore kit on there
2. there is no reverse on the transmition
Not very mechanically inclined so i cant help on the technical aspect but hope i helped a little
#3
#4
RE: Project: Terranex 600F3
thats gona be a bad little build! Have you figured out what you are going to do about getting the power to the wheels yet, seeing as how the cart is IRS with CVDs? as far as the trans goes, there is no reverse. just 1-6 forward. If I where you I would set up a paddle type shifter like a shifter cart would have, you could possibly use shifter cart parts for quite a bit of your build. I will definitly be watching this.
#6
RE: Project: Terranex 600F3
ORIGINAL: ynks4evr
the price for any advice you get on here is to make a video of it when its all done
the price for any advice you get on here is to make a video of it when its all done
ORIGINAL: oldschoolsdime92
If I where you I would set up a paddle type shifter like a shifter cart would have, you could possibly use shifter cart parts for quite a bit of your build.
If I where you I would set up a paddle type shifter like a shifter cart would have, you could possibly use shifter cart parts for quite a bit of your build.
ORIGINAL: oldschoolsdime92
Have you figured out what you are going to do about getting the power to the wheels yet, seeing as how the cart is IRS with CVDs?
Have you figured out what you are going to do about getting the power to the wheels yet, seeing as how the cart is IRS with CVDs?
#7
RE: Project: Terranex 600F3
Money!!!
http://www.rpmgearboxes.com/
From this link, a poster stated that they cost about $2K ... OK, there is my backup plan ... no pun intended
http://www.rpmgearboxes.com/
From this link, a poster stated that they cost about $2K ... OK, there is my backup plan ... no pun intended
#8
RE: Project: Terranex 600F3
I was going to build a cart with a friend using a f2 motor. Anyhow, that lsd probably won't last a second with x7 the hp running through it. Consider running without one, sport atvs do it all the time and turn great. The f3 carbs will need a fuel pump, fyi. As for reverse, how about a line lock for one of the front brakes. I know it is barbaric but that thing should have no problem spinning the tires to get around.
#9
RE: Project: Terranex 600F3
You would think, but the only thing I think I have to worry about is "shock loading" the reversing box. As long as I feather the gas and slip the clutch, this thing should be just fine.
Noob question 2) How much horsepower/tq is this engine rated in stock form (98 F3)?
Thanks!
Noob question 2) How much horsepower/tq is this engine rated in stock form (98 F3)?
Thanks!
#10
RE: Project: Terranex 600F3
I pondered this for awhile. If I where doing this build Here is how I would go about doing it. I would do away with the stock rear suspension. I would shorten up a swing arm from a quad. I would then get ahold of a trans from a late 80s honda 250x( or any sport quad with reverse.). They had reverse. You then could mate that trans up with the f3 engine, have your shortened quad swing arm and chain drive and not have to worry about trashing some random transmission. just my own oppinion.