Archive for January, 2012

Geartronics Air-shift system in place!

The first of the engine bay accessories to go onto the car! The Geartronics electronic air shifter system is now in place!

The air actuator used for the pulling and pushing of the Sadev gear box’s input shaft, was integrated into the rear bell housing mount. It’s made from 4mm thick laser cut steel plate and has been webbed with reinforcement plates to provide plenty of rigidity for when the actuator is under load.

A small mounting plate was fabricated and TIG welded onto the chassis to retain the air valves used to control the air between the pump, reservoir tank, and air actuator. Small rubber grommets where used between the Valve bodies and the mount so that harmful chassis vibrations will be dampened.

The reservoir canister has been rigidly mounted to the chassis via a fabricated aluminium mount. Small tabs where welded onto the rear subframe of the lotus to accommodate the mount, then small and light riv-nut threads where inserted for quick release. The tank is held in place with 2 large jubilee clips wrapped in shrink wrap so that the canister won’t be scratched.

All 3 accessories have been located as close as possible to each other to maintain a constant pressure for quicker, crisper shifts.

For any more information on the Geartronics air shifter system, check out their website.

Engine mounted!

It’s been quite some time since our last update. Project N2 is back on it’s feet and getting nearer and nearer to tearing around all the famous race tracks the world has to offer.

In order for any drive train related accessories to be put in place (ie: air shifter system, oil/ coolant tanks, drive shafts, etc.), the engine and gearbox needed to be mounted. Using a series of levels, scales, and inclinometers, numerous surfaces of the engine where picked and related to the chassis to locate the engine in the optimal location.
Once the engine was set in it’s final orientation, engine mounts where designed using the latest 3D Computer Aided Design software, laser cut, then TIG welded together.
Rubber bushing inserts where chosen to support the engine as they will allow for the stiffness the engine will require under load, but will also offer some “give” so that the vibrations of the chassis and drive train don’t effect the inner workings of the engine and related equipment. The standard S2 Exige engine mount has been left in place for now as it’s a hydraulic dampening mount which will also allow the engine some “give” under vibration. This isn’t to say that it won’t be replaced in the future by a superior design.