live axle vs. dual swing arms

[keep33]

Hey, all. I'm in the tear-down process of my 480 Phazer motor mount onto my Tomberlin crossfire 150R, and have been wondering if it is worth trying to create a chain-drive spool and swing arms and run IRS, or just stick with the single swing arm and live axle on it now. Simplicity and expense are always a hurdle, but I want to make the best kart I can. What do you think? Is it worth it, or should I modify the existing swing arm and live with it?

 

[redsox985]

Well, IRS will be very nice, but will also be a lot more work and cost. How has it done so far with the swing arm? Are you satisfied with it?

 

[keep33]

I have only driven the kart with the original 150cc engine mounted to the swing arm... Not the greatest ride. Lots of unsprung weight. Either way I plan on mounting the motor to the cockpit and having the swing arm free from bearing the motor's weight. Some money and time is acceptable. I just don't want to have to borrow money (joking) to complete it.

 

[Bluethunder3320]

softer spring?

 

[Doc Sprocket]

Since both options will have the same basic starting point, why not go ahead with the single, dependent system, and if you're not thrilled with it change it later?

 

[redsox985]

When I almost bought a Crossfire, I was researching and found the stock shocks are poo. They are incredibly hard and should be replaced. I would try the swing arm mount for simplicity of chain tension with some good shocks in there.

 

[keep33]

All food for thought. I'm not sure which way I will go. Just bought a camera to start pics, though. Hopefully I can figure it out. Im a lot better with steel than I am with electronic technology.

 

[keep33]

And, yes. The crossfire's original shocks are poo... to put it nicely.

 

[Doc Sprocket]

the stock shocks are poo.

So- Too mushy???

 

[devino246]

So- Too mushy???

Umm:

They are incredibly hard and should be replaced.

 

[Doc Sprocket]

Well, yeah. I see your point. Hard poo is a problem.

 

[redsox985]

Actually, either isn't good. Too hard and every bump hurts. Too soft and it's like there's nothing there!

 

[Doc Sprocket]

Okay, I'm gonna stop with the poo jokes, they're clearly not working.

 

[keep33]

I got them. And I laughed. Well done.