I have a go kart I am hoping someone on here can build a jackshaft for it also I will need a way to adjust chain tension this kart the chain has to be tight or it will make a noise as if the chain is slipping in the jackshaft sprocket...
Can anyone fabricate a jackshaft for my kart
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2SlickNick
American Minibikes @ FB
If you can weld, you can build a jack shaft. If you can not weld then you will have to buy a Torque converter unit like this http://www.bmikarts.com/Torque-Converter-for-35-Chain-1-Bore-TAV2-Replacement_p_2527.html
I made mine and used this http://www.bmikarts.com/Tube-Bearing-Hub-Weldment_p_1897.html
Here is my link to my build
See post 28 and 30
http://www.diygokarts.com/vb/showthread.php?t=25416&page=2
I made mine and used this http://www.bmikarts.com/Tube-Bearing-Hub-Weldment_p_1897.html
Here is my link to my build
See post 28 and 30
http://www.diygokarts.com/vb/showthread.php?t=25416&page=2
2SlickNick
American Minibikes @ FB
Ok here is the deal my engine is a predator 420 cc so I can not use the first jackshaft setup you showed me.i have never welded before so there is a no there I guess my only option is to find a jackshaft engine plate however my torque converter has to be a 40 series and the engine plate at the bottom post I do not know if it will fit my engine footprint
Poboy kartman
Senior Moments Member
Ummmm....yeah....hmmmm....I'm sittting here thinking.....uh.....have you even thought about option #3....Hiring a welder?
2SlickNick
American Minibikes @ FB
Go ahead and do the footwork.
Meaning collect the necessary parts, guestimate the distance you want for the jack shaft, decide and research where it will be mounted ( do mock ups ), after mock up get back with us on ideas and critiqueing, take it to your welder all your specs and info.
After welding- precisely measure the distance of jack shaft to motor shaft.
Order belt, then enjoy the kart.
The rest is up to you.
Does this help? If I forget anything someone chime in.
Meaning collect the necessary parts, guestimate the distance you want for the jack shaft, decide and research where it will be mounted ( do mock ups ), after mock up get back with us on ideas and critiqueing, take it to your welder all your specs and info.
After welding- precisely measure the distance of jack shaft to motor shaft.
Order belt, then enjoy the kart.
The rest is up to you.
Does this help? If I forget anything someone chime in.
mckutzy
Well-known member
Well I wasn't too sure if mentioned, why not 2 sprockets of desired pitch, and 2 pillow blocks of a given shaft diameter(for that engine is say go for 1").
That's what I did, mind you I also incorporated a tensioner in this aswell.
That's what I did, mind you I also incorporated a tensioner in this aswell.
qtband
Well-known member
I needed to make a jackshaft for my Polaris 295 transplant. I can weld, but many people can do this for you.
If you get the bearings you want to use (I used 3/4" ID x 1 3/4" OD), go to a metal supply and get the plate cut AND bent and a tube/pipe with a 1 3/4" ID, then take it somewhere to get welded. An exhaust shop or anywhere they do welding would probably do it cheap, especially if you have everything laid out and the parts cleaned.
I also got a piece of pipe with a 1 3/4" OD for the inside of the jackshaft. Measured and cut correctly, it will allow for a "seat" for the bearings 5/8" from each end. I plug welded mine so it will stay put.
The picture shows a bottom plate. You wouldn't necessarily need this for your application.
If you get the bearings you want to use (I used 3/4" ID x 1 3/4" OD), go to a metal supply and get the plate cut AND bent and a tube/pipe with a 1 3/4" ID, then take it somewhere to get welded. An exhaust shop or anywhere they do welding would probably do it cheap, especially if you have everything laid out and the parts cleaned.
I also got a piece of pipe with a 1 3/4" OD for the inside of the jackshaft. Measured and cut correctly, it will allow for a "seat" for the bearings 5/8" from each end. I plug welded mine so it will stay put.
The picture shows a bottom plate. You wouldn't necessarily need this for your application.
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2SlickNick
American Minibikes @ FB
Sounds and looks exactly what he needs.
well i have a jackshaft on it but the chain tension os not adjustable so my chain is loose if i take out a link,well im forced to remove 2 links then the chain will not go on the sprocket i guess i will try a half link but i do not see how they work
Poboy kartman
Senior Moments Member
Other members have solved that problem by shimming the motor up with washers.....
Poboy kartman
Senior Moments Member
No....it will get a teeny bit looser....IF!!!-the whole chain is new...otherwise. ...no- not for a long time. .....
You are probably better off with a full link and washers for now......
I can not use washers encase my jackshaft sits on a plate under the engine so where would washers go.i know normally they would go under the engine to raise engine and tighten the chain but my setup is different.i have always had to have my chain tight though if not it makes this sound as if my sprocket is slipping it the chain when under a very heavy load or very fast take off, however it has never been this tight
mckutzy
Well-known member
lets see some pics of this. Im having a little hard time Picturing this.
2SlickNick
American Minibikes @ FB
jackshaft for 420 cc predator engine
Has anyone used this jackshaft engine mount with a big block engine and can confirm that it will work I have the predator 420 cc engine.this engine had a bigger foot print than the predator 212..If so please confirm or point me in the direction where a jackshaft can be bought that will work with this engine...Thank you
Has anyone used this jackshaft engine mount with a big block engine and can confirm that it will work I have the predator 420 cc engine.this engine had a bigger foot print than the predator 212..If so please confirm or point me in the direction where a jackshaft can be bought that will work with this engine...Thank you
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2SlickNick
American Minibikes @ FB
2SlickNick
American Minibikes @ FB
http://www.diygokarts.com/vb/showthread.php?t=21711&highlight=predator+mount
here you go.....
You just have to look. Use the search button at the top.
here you go.....
You just have to look. Use the search button at the top.
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