needing a lot of help/advice on this one
- Thread starter jdfelda
- Start date
- Status
Kartorbust
Inmate #627
A lot of shifter karts use a 125cc engine that has a 5 speed gear box. Usually a Chinese Pitbike fits the bill. Pro shifter karts used a Honda 125cc engine and others used a 250cc. The 250cc break 100mph, so when you're 2" from the ground, that'd balls to the wall fast.
That engine for sure has a gear reduction on it. Probably setup for a cement mixer. Could never understand why people choose an engine with gear reduction added on, especially brand new ones...they are more expensive and just rob power and speed.
A designer knows he has achieved perfection, not when there is nothing left to add, but when there is nothing left to take away.
That engine for sure has a gear reduction on it. Probably setup for a cement mixer. Could never understand why people choose an engine with gear reduction added on, especially brand new ones...they are more expensive and just rob power and speed.
A designer knows he has achieved perfection, not when there is nothing left to add, but when there is nothing left to take away.
Kartorbust
Inmate #627
I'm no expert at engines. Just relaying information that I've gathered in the past few months, since becoming a member on here. I think that engine would be fine, plus you'd be helping a member out on here. Top of that, a lot of times trying to track down an engine is hard.
A designer knows he has achieved perfection, not when there is nothing left to add, but when there is nothing left to take away.
A designer knows he has achieved perfection, not when there is nothing left to add, but when there is nothing left to take away.
so when you were talking about the engine with a gear reduction were you talking about the gearbox on my engine or the engine itself?
Kartorbust
Inmate #627
Engine itself, looks like it has a gear reduction on it. Sprocket on the crank to a small sprocket on a secondary shaft with a chain. That's what it looks like to me and what others have stated.
A designer knows he has achieved perfection, not when there is nothing left to add, but when there is nothing left to take away.
A designer knows he has achieved perfection, not when there is nothing left to add, but when there is nothing left to take away.
Jr. Mechanic
New member
I think that engine would be good for your build. Not overpowering, but it would still get you going plenty fast. Id strongly consider it if you have the money.
what kind of speed do you think i could get out of it with that? also, how would i set up the clutch and shifter ETC
chancer
ɔ ɥ ɐ u ɔ ǝ ɹ
I linked that cause it is a Shifter and it is a good price (Excellent $) for a shifter motor that will go on a go kart.
Message the Seller. He knows best what he has and its applications.
Message the Seller. He knows best what he has and its applications.
Kartorbust
Inmate #627
Making a shifting linkage wouldn't be too hard either, as it's been done many times on karts and buggies that have used motorcycle engines. Though most of what I've seen do it on the left side, rather than the right, just because of engine placement and the fact the transmission is on that side. But as this engine will be mounted on the immediate right side, should be no trouble getting the linkage. Same with the clutch. A lot of the shifter karts mount the clutch on the steering wheel. Some custom ones mount a third pedal.
A designer knows he has achieved perfection, not when there is nothing left to add, but when there is nothing left to take away.
A designer knows he has achieved perfection, not when there is nothing left to add, but when there is nothing left to take away.
Bwdeaton
New member
I often see shifter karts with a clutch lever on the steering wheel and a shifter lever directly to the right of the wheel, which seems to be the most common setup. Occasionally, I have seen a paddle shifter setup with a foot clutch, which seems superior to me, considering that you don't have to remove your hands from the steering wheel to drive.
i agree, the floor clutch seems way more efficient, but once you're in 1st gear can't you just shift without the clutch? isn't it a sequential gear box?
Bwdeaton
New member
Yes sequential gears, and yes clutchless shifting can be done
do predators have gear reductions on them?
---------- Post added at 03:13 PM ---------- Previous post was at 02:56 PM ----------
Bwdeaton
New member
Yes that is a 2:1 reduction with a wet clutch. It makes the output shaft speed half of the crank speed and loses some power to friction.
212 predators do not have any reduction, the crank directly drives whatever you connect to it.
212 predators do not have any reduction, the crank directly drives whatever you connect to it.
so if i wanted to get rid of the 2:1 reduction, i would need to buy a whole new clutch?
Bwdeaton
New member
The reduction gearbox is part of the engine, however, it may be removable. You would need to find a cover that does not have the reduction on it and swap them out, as long as the crank output isn't tapered.
no the reduction isn't part of the engine, it's bolted on. i'm in the process of taking the governor off and i had to take the case of the reduction apart to get to the bolts that hold it on to the clone
---------- Post added at 03:38 PM ---------- Previous post was at 03:35 PM ----------
i'm pretty sure it can be totally removed but i'll let you know when i get to that point. assuming it is removable, is buying a whole new clutch the only option? it's a 428 chain and the centrifugal clutches are kind of expensive for that size
Bwdeaton
New member
If you remove the reduction, you will need to replace the clutch
would it be a bad idea to switch to a 420 chain rather than a 428? i'm really just looking for a temporary solution until i can afford to buy that honda clone shifter engine and have it shipped
- Status