Chain questions

[schmidtye30]

I bought a 'hyper'? go kart as a Christmas present for my boys. Had to put on a new carb, spark plug and needs an oil change but otherwise engine seems to be running good.
Other problem is I need to install new chains. It has a torque converter and I have the chain from the converter to the axel installed. I have a long chain that I'll need to shorten for the engine to converter.
My question is how tight should these chains be and what's the best method for installing?

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[itsid]

well the kart you showed us has NO torque converter..

Am I right to assume that you swapped the two stage for a TC ?
if so please post a pic of that as well

since you need to adjust your gear ratio if you intent to skip the jackshaft
otherwise it won't work too well.

All the sprockets in the pic are worn out badly btw..
so you need a new set of sprocket anyways.
(either all and keeping the ratio you had or one larger axle sprocket.

chain slack depends on sprocket size and shaft distance..
but generally if you wiggle on the chain and have much more than half an inch of slack,
you might want to consider to install a half-link

'sid

 

[schmidtye30]

Sid,

Thanks. I wasn't sure what to call the sprocket at the back but the pics are the current setup so I guess the jackshaft is what I'm talking about.
What's the purpose of the jackshaft? Just to change the gearing?
I'll look at getting some new sprockets... any recommendations on where to buy online?

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[BigWes]

What the.... I ain't never seen nothing like that...

And why does it have that blower motor fan on that centrifugal clutch? I can only guess the clutch was overheating and glowing red because it ain't geared right being set up like that.

Wow! Sid is right about one thing, those sprockets are done...if I was you though I would look at a more user-friendly drive set up if possible. I would certainly recommend installing a torque converter if you can find a way to pull it off especially with that small of a an engine on such a big kart too...good luck!

---------- Post added at 08:57 PM ---------- Previous post was at 08:38 PM ----------

Ok, did some quick research....

That kart came that way....

It is a Manco Fox Hyper...

So, I have still not ever seen anything like that before, except for yours... however, it must be that way by design...so, my initial conclusion about it was wrong....

Replace worn parts...and drive it like it is!

My understanding is Manco built good stuff.

If it came that way, why not give it a shot, just keep the kids out of that fan please...you too!

I imagine it would have no prob taking a finger off.

---------- Post added at 09:06 PM ---------- Previous post was at 08:57 PM ----------

BMI Karts has Manco parts and some manuals. They might be able to help you. Some of the manuals are online and if not for your kart specific may be close enough to get you going.

 

[itsid]

it's a Manco 3005

and the manual is here:
https://americanlandmaster.com/pdfs/gokarts-minibikes/model-3005-3006/30053006_partslist.pdf

(americanlandmaster used to be called many things in the past.. one of that was "Manco" another "master of Motion")

Sprocket sizes are luckily in said manual and even
the exact link-count for the chains you need (convenient, aint it?)
allow me to ease things up a bit further:

pic#	order#	description

30	13738	Chain 420 x 44 (incl masterlink 2037)
31 	13900	Chain 420 x 55 (incl masterlink 2037)
32	 2037	Masterlink 420 Chain
35	13679	Dual Sprocket 12T / 23T 420 chain [5/8" shaft]
73	12884	Clutch 10T 
87	13680	Sprocket 40Tooth [420 chain]

that dual sprocket is the hardest part on the list
but gopowersports should have one, and if you google the order#
you might find a few sources for that

a fresh clutch is also not too bad (it's sprocket likely looks very much alike!)
I suggest a maxtorque 10T for #41 chain (100% 420 compatible)
it's rather cheap and high quality.

'sid

PS hmm..
http://amsportworks.com/pdfs/partlist.pdf
still lists the sprocket .. maybe they have it still stocked??
and yes.. americansportworks is now americanlandmaster..
new years new names I guess... ah well...

 

[BigWes]

Nice...I would suggest getting the chain cover too in the process...keep the fan from gettin little fingers cut off

 

[schmidtye30]

Just wanted to say thanks for all the info guys.
I'll be getting some new sprockets and a chain cover. That fan definitely looks like an accident waiting to happen.