Manco vortex go kart

[Possom Point]

The bearings should poop the bed before the shaft bends.

Even with the shaft sticking out 5-6 inches past the bearing?

 

[Jacka$$withawrench]

Even with the shaft sticking out 5-6 inches past the bearing?

Probably. ill run some numbers and get back to you. How much does the passenger weigh/kart weigh?

Assuming a 300lb corner load you should still be under the modulus for steel at .75" round and 6" past the bearing

 

[Possom Point]

So I did some walking around and more thinking and talked to a guy at my work. He had suggested to see if it was possible to move the sprocket to the other side of engine……….. well at first I didn’t think it would work. So check out what I did today!!!!! . I ended up cutting the engine mount off and had to extend the slots about an 1” 1/4 to make more room for the jackshaft mount, and moved the tube over a 1/2” and re-tacked the motor mount a 1” 1/2 more to the left.
I feel that where I’m at is a good place to make this work l.

 

[Possom Point]

And this is the stick out of the motor, I prefer to have it closer to the inner frame but she a biggin

 

[Master Hack]

Empirical engineering at its finest!

this thing about the shaft overhang, i hope l understand this correctly. always try to avoid putting a load on the end of a shaft like that, unsupported. The shaft will be fine, but ya put an extra load on the bearings.

Even with the shaft sticking out 5-6 inches past the bearing

Thats called "overhung" load. Not to be confused with "hungover"
l don't know how to do the fancy drawings, but picture a lever with support near one end only. Like a diving board...
overhung load is a serious problem to avoid.
lf ya suffer from insomnia....

Dealing with overhung load

Whether input power comes from an electric motor, gasoline or diesel engine, or PTO on a transmission, hydraulic pumps typically are driven through an industry-standard flange...

www.powermotiontech.com

 

[Possom Point]

. This I understand!!!!! That makes sense , I was thinking that having that minch “overhang” would be a problem For either the shaft or the bearings in some way. I’m hoping my current setup would balance things out to a degree. I copied my single seater Dingo setup in a way, with the drive and axle sprocket on the right side of the engine instead of left.

 

[Possom Point]

Parts came in for the kart, 16” x 5/8 jackshaft, 5/8 collars, 3/8” bolts, nuts and coupling nuts for the spacers under the jack mount plate.

I welded the motor mount and welded the tube and reinforced it. Definitely overkill using 1/4” but I didn’t have any 1/8 steel laying around.

For now this is where I’m at but I’ll be able to work on it more this coming week.

 

[panchothedog]

No overkill. Better too strong than too weak.

 

[Possom Point]

Got a couple things done tonight, I rough fit the motor and made the shoulder style bolts that look similar to the originals. Not sure what they’re called but you get the idea. Motor fit well after taking the muffler and air cleaner box off and I still have enough room for the chain. I used red lock tight to keep the bolts from moving out of the nut. I will let them dry overnight and work on it more this weekend.

 

[bullseye670]

Got a couple things done tonight, I rough fit the motor and made the shoulder style bolts that look similar to the originals. Not sure what they’re called but you get the idea. Motor fit well after taking the muffler and air cleaner box off and I still have enough room for the chain. I used red lock tight to keep the bolts from moving out of the nut. I will let them dry overnight and work on it more this weekend.

Looks good. I usually drill a small hole in the middle of those bolts and put a roll pin in it.

 

[Possom Point]

Looks good. I usually drill a small hole in the middle of those bolts and put a roll pin in it.

ill remember that next time. That’s a good idea. Thank you

 

[Possom Point]

Worked on it some more last night and ran into a couple snags, first this big block keeps getting heavier and heavier every time I mess with it. Geeez she a biggin
Anyway I got the torque converter mount and engine bolted down and unfortunately the slots are a little bit to tight to fit 100% and slide freely, not A big deal but not ideal.
2nd when I installed the jack shaft and lined everything up, I initially intended putting the lock collars on to lock everything in place, however once I looked at it and got to thinking that was not going to work, I don’t need all this metal to fly apart behind my head. I ended up threading the ends of the shaft and out lock nuts on there for properly lock down and for “insurance” down the road.
Once I got that straight I accidentally pulled the motor too far back and broke the ignition coil that connects to the spark plug, I will need to get one of those down the road.
So after that fiasco I noticed yet another problem I was hoping very much to avoid……. This cart having a swing Arm and 2x motor size……. Yeap you guessed it, it hits the rear frame/bumper. I really really didn’t want to cut the frame but I will have to to allow for the travel. I have an idea in mind that I want to do, that is make an “A” shape in the middle but make it as to I can take it on and off, so I will need to make small pieces of pipe and run a Bolt through it to make it removable and have enough clearance for the motor.
Here are some pics of current progress, please let me know if any changes or tweaks would need to be done.

 

[Denny]

I was going to mention the clearance issue but figured you knew about it already.

 

[Master Hack]

Worked on it some more last night and ran into a couple snags, first this big block keeps getting heavier and heavier every time I mess with it. Geeez she a biggin

The engine and the necessary mounting hardware are heavy! I think the hardware needed to keep that BB where it was put, weighs as much as the complete engine alone!

 

[Possom Point]

I was going to mention the clearance issue but figured you knew about it already.

I have to be honest. I had forgot about the swing arm moving, I’m used to my dingos having a solid frame, and slipped passed me, but not a big deal I’m going to get some tubing and try to make a few bends in it to make room for it and hope to be able to unbolt it when need be.

 

[Possom Point]

Worked on this for about 3 hours and was not able to the bolt on idea because there was no room for movement once I put the bent pipe and couplings on, so for now it’s welded in place with a small weld in case this doesn’t work.
I made 2 versions of this, 1 with a 45 degree and 1 with a 90 degrees, this was scrap pipe pieces from the dumpster, the bender I used at home kinked it to bad to use. Anyway here are the pics and I’ll post a video to. I had a little more than 3” of Travel before before the frame hit the air filter and muffler. I’m hoping it’s enough if not I’ll add longer shocks down the road.

 

[Possom Point]

Video

 

[Denny]

I approve!

 

[Possom Point]

I approve!

I plan on cleaning all the clay and dirt off of it tmrw. Still need to make a battery mount, weld on light tabs, put seat on and get a test ride in. Super excited but gotta take it easy before I lead foot down the street

 

[Possom Point]

Made some light tabs and a battery box this weekend and she got a good cleaning