Most Important Flux Upgrades?

[Bmr4life]

Originally Posted by _dV

For bashing i prefer to do the following to improve the stock Flux handling

1. Use 1/2 offset wheel or Savage XL extended axles
2. Do the tube shock mod and use a stiffer spring with heavier oil (white spring, 45-50 centistoke oil). Put an extra spacer in the rear shock, they need to be a little stiffer than the front
3. Use a lower profile tire than stock or mount a high profile tire on the inner bead of a larger wheel
4. Tape the tires
5. Use a heavy diff fluid in the front and rear diffs (30K-100K) instead of having just the grease.

Those 5 things make a huge difference to the stock flux handling without compromising ground clearance.

Other base stuff for a stock Flux

• Move the ESC forward on it's plate as far as possible (avoids shock damage)
• Do zip tie mod on front bumper arms to prevent them moving aside and letting the top hinge pin out
• Get some velcro ties to secure the battery boxes
• Get BP diffs if it didn't come with them
• The drive gear will start to wear badly after about 10 runs, get the HD replacement
• The pinion needs to be loctited, put some loctite on the shaft as well. it will look like it's hardly wearing for the first 15 or so runs then it will fall to pieces rapidly. Get a decent harded one like a Novak or RC Monster
• Get bearings for the steering rack. the HPI ones are stupidly $ just get cheap ones from ebay or somewhere
• Tighten steering servo saver spring further than advised(still leave room for servo saver to work) or get the HD spring
• Rear tie rod eliminators, better steering servo and 2.4Ghz are nice to have.

What is the shock tube mod?

[thzero]

This should mostly be a ride height adjustment. If you want to change the stiffness of the spring, go to a heavier one.

Put an extra spacer in the rear shock, they need to be a little stiffer than the front

Interesting. The point of the dual-spring system is it acts as a dual-rate spring system so that you can run a slightly softer spring in general, but on really big jolts to the system the heavier second spring absorbs some of the energy in a more controlled manner. By swapping out the heavier spring for the plastic collar you are effectively swapping the elasticity of the spring for the elasticity of the plastic.

Use the optional tube that comes with the kit above the big spring, and take away the little spring

[_dV]

The extra spacer doesn't fill a gap between the spring and the end of the shocks as the tube will have filled virtually all of that. It should actually precompress the spring a little adjusting both ride height and stiffness. There is a fairly big diff between the stock pink springs and the white springs so if you want a stiffness in between the spacers are the only way to get it.

The stock short spring actually seems to be slightly less stiff than the pink spring. You can see this if you hold them end to end and try to compress. So there is some small amount of dual rate happening. What i'm not keen on is the plastic collar that joins them. It rubs a lot on the shock body when things get dirty. What would be nice is a single dual rate spring not two separate springs. I used to run Raven dual rate springs when i had the LST shocks on and they were worked quite well.