V3 Upgrade
 

I am upgrading a Version 3 mechbox with a Prometheus Non-Liner MS120SP spring. I have upgraded the entire top end of the mechbox (piston, cylinder, piston head, cylinder head, and nozzle) and added new bearing bushings for the gears. I am running a 9.6V 1500 Mah battery or a 9.6V 1800 Mah battery depending on which battery I pick that day.

The question is do I need to upgrade the motor or the gears to handle the spring?

Thanks in advance.

That spring will eat your gears for breakfast. You'd better get upgraded gears.

I'd be more concerned about your bearings - if they're 6mm, they're not made to handle anything stronger than a Prometheus MS100SP spring. Maybe MS110SP if you're lucky.

That is unless, you have the Guarder "bearing bushings", which are standard non-moving metal bushings.

ILLusion

I am looking at putting Deep fire 6mm Hardened Oiless Metal Bushings in if that will help.

Thanks

Okay, those are fine. As long as they're not moving bearings in 6mm size.

Personally, I would also recommend upgrading the gears. Upgrading the motor is not a necessity, but would be gravy if you're looking for a boost in ROF and/or torque.

I have two extra sets of stock gears. If I have a problem with one set I can always switch them out.

Thanks for the info

Later

Outrider

Lol, well I meant that too, but I thought metal bushings was kind of implied.

so, bushings are preferred over bearings? do the gears wear out faster if the bushings are used, or is it the issue of the whole gearbox getting rogered if bearings blow up?

It's the latter, the gearbox getting messed up if the bearings blow up. If you want to use a bearing bushing with an upgraded spring, you'll need to use a gearbox with bigger bushing size, like 7mm.

The concern isn't really the gears wearing out.

Yes, they'll wear out, but chances are, they'll strip the piston teeth sooner rather than later.

Your motor will also experience excessive wear when running standard ratio gears on a spring this heavy.

Bushings? No, that has nothing to do with it at all. Do you mean Bearings?

Yes, bushings are preferred over bearings for high velocity setups. You can get larger sized bearings to handle heavier springs, but that also requires a modified/custom gearbox to handle the larger bearings.
The main issue with 6mm bearings is once you surpass 360fps or so, the pressure is enough to cause the bearings to blow up. once that happens, you'll mess up all your gears and possibly the pinion gear as well.



General rules of thumb on bearing limits:
6mm: Systema M100 equivalent
7mm: PDI 190% equivalent

Thanks ILLusion!
Your answers are very helpful

So if I install a Prometheus Torque Gear Set I will have less wear on my motor. What will be ROF end up being. Will it be like running an 8.4V battery if I am using a 9.6V battery?

What do you think of the Classic Army High Torque Short Motor?

Yup, a torque up gear set will have less wear on the motor.

That depends on the size of your battery, but generally, you won't notice a drop off. I don't even notice a difference between genuine torque ratios and Prometheus triple torque up gears when using an 8.4v 2400mAh Ni-Cad sub-C large pack shooting a 400fps spring..


I couldn't say. I have minimal experience with CA motors.