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Old 02-18-2020, 10:26 AM
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Default Jack shaft

I have an American sportworks go kart that had a Subaru 6.5 hp on it and Iím changing it out with a predator 212 with a tav already on it. The current set up has a jackshaft on it. Can I use that with the new engine and tav set up?
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Old 02-18-2020, 03:27 PM
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The go kart police are gunna confiscate your China engine and write you a ticket for non-American made modifications.
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Old 02-18-2020, 05:07 PM
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LOL... it had a Subaru engine on it, the Go-Kart police may let him slide.

I have a neighbor that was working in a Chinese kart for a friend. It had a jackshaft CVT setup that was bypassed so it was running on a centrifugal clutch.

I scratched my head and looked twice to figure out why they did that, but anyhow - it shows you can have driveline components hanging out doing nothing if everything else lines up.

See if the drive clutch on the subaru will fit on the predator shaft and use the original JS setup. The TAV is easy to remove ... just 4 bolts.

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Old 02-18-2020, 05:45 PM
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Ok great I think that is what Iíll try to do. Iíll keep you posted. Itís an American Sportswork Hornet BTW. Just needed some upgrades since itís being passed down from older brother to little brother. I bought the predator and put exhaust, new air intake, new TAV, and changed the springs out to 18lb springs. That was all in a ďstage 1 kitĒ from OMB. I was trying to just swap it out but Iím a newbie to karts or honestly engineís / Karts so of course Iím running into ďscratch my head moments. Thank you for your response and ANY future help with this project
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Old 02-18-2020, 06:30 PM
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Quote:
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Iím a newbie to karts or honestly engineís / Karts so of course Iím running into ďscratch my head moments.
Welcome to an expensive and time consuming hobby. At least it's easy though! And fun!
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Old 02-18-2020, 07:29 PM
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very expensive. especial if you aren't old enough to get a job, which i am. at only 13 yrs
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Old 02-18-2020, 07:53 PM
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very expensive. especial if you aren't old enough to get a job, which i am. at only 13 yrs
Consider yourself a lucky soul. I got my first kart when I was 15. The earlier you start, the more you'll know at the same age as others that know less... If you know what I mean.
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Old 02-19-2020, 08:00 AM
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very expensive. especial if you aren't old enough to get a job, which i am. at only 13 yrs
Same here. I've got 4 projects and about $20 total......

I'm just waiting for the lawn mowing season to pick up again.
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Old 02-19-2020, 08:22 AM
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I'm just waiting for the lawn mowing season to pick up again.
And you probally have the fastest mower on the block
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Old 02-19-2020, 08:31 AM
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Nope, just a plain Honda GCV160 self propelled. I wish I had a riding mower to hop up. Maybe even add a road gear somehow to cruise around at 30 MPH!

Hmmmm, a kart-towable mower trailer..........Or a vert shaft/mower setup to bolt to the kart........hmmmmmm.......

One of my customers has a rear engined Cub Cadet riding mower she lets me use for her yard(it's big), and every once in a while when I'm bored, I'll start on the driveway, put the engine at full throttle, reverse it a bit, then hit the gas HARD! It'll consistently pop wheelies!
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Old 02-19-2020, 08:33 AM
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Just tie the mower to the back of your kart and raise ****
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Old 02-19-2020, 08:34 AM
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Hehe, my kart's louder than the mower!!
At any rate I'd kill my clutch real fast with the current gearing.
But if I could, you know I would!!!
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Old 02-22-2020, 07:07 AM
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Default Hornet engine swapping help!!

I have a American sportworks hornet that I am doing some upgrades on. I bought a predator 212 and a tc for it. The hornet had a Jackshaft set up on it. How in the world do I make this match up!! The new tc wonít match up with the jackshaft so Iím wondering do I have to have a certain tc to make it match up? Please any help would be awesome!!! Newbie here by the way
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Old 02-22-2020, 08:20 AM
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by hornet you mean 3170, right?
ah too bad, that's a chinese made manual
far from the quality of previous Manco manuals
Still pretty straight forward actually.

Anyways when you say you bought a TC I assume you bought a TaVKit replica, correct?
well first stepp: take both pulleys off the backplate the Tavkit came with

mount the sprocket and the driven pulley to the jackshaft,
and the driver pulley to the engine..
those should line up, if they don't we need pictures.

maybe you installed the jackshaft incorrectly (either the plate or the actual shaft)

keep in mind that the Manco 5959 belt (as used on your kart originally)
is a hair longer than the 203589A belt the original TaV2 Kit came with,
so you might have a problem with the belt being a bit tight;

you might be able to adjust that by moving the jackshaft plate a bit
(if it's slotted that is) else you might need a new belt.


And don't ask the same question twice in different threads.
reuse the old thread instead.
[MERGED]


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Old 02-22-2020, 09:13 AM
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Sorry for posting twice. Iím learning! Lol Yes it is a 3170 Iím assuming. I google that image and it looks exactly like what I have. Iím going to include a pic of the tc I bought.
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Old 02-22-2020, 10:59 AM
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Yepp, as I said...
remove that stupid backplate from your TAV..

and mount the Pulley to the jackshaft (you hopefully still have) on your JS-plate instead

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Old 02-22-2020, 12:16 PM
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Ok so I took the pulleys off that back plate. Does this plate Iíve circled come off of the jack shaft and then Iíll be able to slide the new one on? Maybe itís just tight on there but it doesnít seem to be able to come off.
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Old 02-22-2020, 09:04 PM
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it does come off of course

why it's stuck I can't tell from that angle,
but since the only thing that fixes the pulley (or your case the fixed sheave of said pulley)
to the shaft is the nut that you already removed..
I'd say penetrating oil, a few licks with the propane torch,
maybe a few taps with the decision making mallet..
and -what comes in handy at all times when working with penetrating oil- some patience.

it's essentially the exact same idea as the jackshaft you removed the new one from.

if you have a bench vise, open it up, so the sprocket behind the sheave lays on the vise,
thread the nut back on a few turns so you don't mushroom the threads
then after some soaking with penetrating oil (overnight or so)
and after you tried to be gentle for long enough
give it a nice sharp blow dead center on the nut
(remember to NOT have the thread protruding the nut or you'll never get tat nut off ever again.)

And if that too fails, a new shaft costs 20 bucks
https://americanlandmaster.com/WebSt...0g0s944rne47u0

yes 14691 is the correct one according to the manual
https://americanlandmaster.com/pdfs/...nual_14771.pdf
(page 13 I think)

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Old 02-24-2020, 06:14 AM
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You were right!! It came off after some soaking and everything so far has gone back together just you suggested. I truly want to thank you for your help on this. Iím a novice, with a little help From you and others I actually think I might get this thing running! Iíve got a lot more to do and will be, Iím sure, calling on your expertise again. Thanks for helping out this ole novice! Iím sure itís frustrating at some points when dumb questions come across
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Old 02-24-2020, 09:23 AM
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you're welcome..

if you feel like you're getting stuck,
don't hesitate to ask, we're here.

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