40 replies to this topic

[scottmasterton]

Hi Everyone 

 

As it says in the title I'm wondering if its possible to get an N/A under 800kg and what parts/modifications it would take?

Also does anyone know the weight of the Z22SE and Box?

 

Thanks Scott

[Steffe]

Hello! Mine is reduced 820kg now and theres more that can be done. 1) wheels, originals are very heavy, go for some light weight variant, I have 15" front and 16" at back. 2) aftermarket exhaust system, will reduce weight 3) race battery eg odyssey 680 4) light weight flywheel 5) balance shaft removal 6) light weight aluminium fuel tank 7) stereo delete 8) fog light delete 9) headrest delete 10) egr delete, light weight alternator and other small fixes This would take you below 800kg

[rob999]

Couple of links.... http://www.vx220.org...ight-reduction/ http://www.vx220.org...ight-reduction/ There's links within those as well....enjoy.

[Bargi]

If you require a roll cage I'd say you'd be hard up to drop it below 800kg

[jonnyboy]

7kg front clam saves 7-8 kg

[scottmasterton]

Thanks everyone 

Plan so far is to track the car initial weight is around 870kg and the parts listed below and others will be added/removed over time

 

VX220 Parts Endurance alloy tank -5.5kg

Heater Unit Removal -3.5kg

Speakers + Stock Airbox Removal -3.5kg

Tank Cover tray Removal -2kg

Carpets removal -2kg

metal/plastic headrest removal -2.2kg

engine/cockpit insulator -1.1kg

original seats replaced with reverie -15kg

Lightweight Front Clam -7kg

Insulation Behind Seats removal -3.5kg

Race Battery -6kg

Stock wheels replaced by Team Dynamics 15x8 pro race 1.2  -16.5kg

Single skin Hardtop -8kg

Carbon bootlid -6kg

T45 wishbones -8kg

 

Potential weight reduction total= 89.8kg

Potential Car weight= 780.2kg

 

Can you think of any other potential weight reductions?

 

[CHILL Gone DUTCH]

Windows for plastic

[fiveoclock]

VX220 Parts Endurance alloy tank -5.5kg Done

Heater Unit Removal -3.5kg Done

Speakers + Stock Airbox Removal -3.5kg Done

Tank Cover tray Removal -2kg Done

Carpets removal -2kg Done

metal/plastic headrest removal -2.2kg Done

engine/cockpit insulator -1.1kg Done

original seats replaced with reverie -15kg Done

Lightweight Front Clam -7kg Done

Insulation Behind Seats removal -3.5kg Done

Race Battery -6kg Not done as wanted to keep weight over the front wheels

Stock wheels replaced by Team Dynamics 15x8 pro race 1.2  -16.5kg Done

Single skin Hardtop -8kg Done

Carbon bootlid -6kg Sprint lid fitted

T45 wishbones - Not done

 

With most of what you intend and a balancer delete, doors cut out, door beams cut out, single seat, no headlights, no interior apart from dashtop, rear clam floor cut out and with the addition of a cage and fire extinguisher system our car is at 850kg no driver, no fuel. Dont ask me how much the cage weighs

[scottmasterton]

Windows for plastic

Any idea how much of a weight reduction polycarbonates would be? as thats something Ive been thinking of as well

[fiveoclock]

 

Windows for plastic

Any idea how much of a weight reduction polycarbonates would be? as thats something Ive been thinking of as well

 

We've got Lexan side windows and rear windows but dont know the weight difference. I would estimate around 4 - 5kg. Just checked and Safety Devices say the cage is 38kg

[scottmasterton]

 

VX220 Parts Endurance alloy tank -5.5kg Done

Heater Unit Removal -3.5kg Done

Speakers + Stock Airbox Removal -3.5kg Done

Tank Cover tray Removal -2kg Done

Carpets removal -2kg Done

metal/plastic headrest removal -2.2kg Done

engine/cockpit insulator -1.1kg Done

original seats replaced with reverie -15kg Done

Lightweight Front Clam -7kg Done

Insulation Behind Seats removal -3.5kg Done

Race Battery -6kg Not done as wanted to keep weight over the front wheels

Stock wheels replaced by Team Dynamics 15x8 pro race 1.2  -16.5kg Done

Single skin Hardtop -8kg Done

Carbon bootlid -6kg Sprint lid fitted

T45 wishbones - Not done

 

With most of what you intend and a balancer delete, doors cut out, door beams cut out, single seat, no headlights, no interior apart from dashtop, rear clam floor cut out and with the addition of a cage and fire extinguisher system our car is at 850kg no driver, no fuel. Dont ask me how much the cage weighs

 

one other thing that I'm going to look at is making carbon doors as have a lot of experience in making composite parts, just depends whether the calculated weight difference is worth it and a cage will be going in at some point. Also a lightweight rear clam would be nice I think someone already makes them?

[fiveoclock]

So without the cage ours would be around 812kg. getting that last 12kg out would be hard. I guess I would start with unsprung weight and change the TD's for Oz. I wouldnt put a poly front screen in. 

[scottmasterton]

So without the cage ours would be around 812kg. getting that last 12kg out would be hard. I guess I would start with unsprung weight and change the TD's for Oz. I wouldnt put a poly front screen in. 

The TD's aren't final might end up going with something different and would never go with a poly windscreen, is the cage you're using made from T45?

Edited by scottmasterton, 26 May 2014 - 05:37 PM.

[fiveoclock]

 

 

VX220 Parts Endurance alloy tank -5.5kg Done

Heater Unit Removal -3.5kg Done

Speakers + Stock Airbox Removal -3.5kg Done

Tank Cover tray Removal -2kg Done

Carpets removal -2kg Done

metal/plastic headrest removal -2.2kg Done

engine/cockpit insulator -1.1kg Done

original seats replaced with reverie -15kg Done

Lightweight Front Clam -7kg Done

Insulation Behind Seats removal -3.5kg Done

Race Battery -6kg Not done as wanted to keep weight over the front wheels

Stock wheels replaced by Team Dynamics 15x8 pro race 1.2  -16.5kg Done

Single skin Hardtop -8kg Done

Carbon bootlid -6kg Sprint lid fitted

T45 wishbones - Not done

 

With most of what you intend and a balancer delete, doors cut out, door beams cut out, single seat, no headlights, no interior apart from dashtop, rear clam floor cut out and with the addition of a cage and fire extinguisher system our car is at 850kg no driver, no fuel. Dont ask me how much the cage weighs

 

one other thing that I'm going to look at is making carbon doors as have a lot of experience in making composite parts, just depends whether the calculated weight difference is worth it and a cage will be going in at some point. Also a lightweight rear clam would be nice I think someone already makes them?

 

Lots of grief making CF doors when you can just cut the originals down and take out the int door handles and put a cable in to get the weight down. Also if you're going to race it and someone whacks your CF doors it'll spoil your week!!!

[fiveoclock]

 

So without the cage ours would be around 812kg. getting that last 12kg out would be hard. I guess I would start with unsprung weight and change the TD's for Oz. I wouldnt put a poly front screen in. 

The TD's aren't final might end up going with something different and would never go with a poly windscreen, is the cage you're using made from T45?

 

No

[fezzasus]

doors weigh nothing, now you've got the cage in the best thing to do is remove the aluminium bar inside the door.

[Claws]

2kg worth of carpets? Were they wet?

[scottmasterton]

2kg worth of carpets? Were they wet?

Thats a bit of an exaggeration to balance the overall weight loss total out

[scottmasterton]

doors weigh nothing, now you've got the cage in the best thing to do is remove the aluminium bar inside the door.

yeah that was just one of many ideas I have to reduce weight further

[turbotoaster]

its amazing how heavy the vx220 is compared to the s1 elise when they share a very similar ali tub, the NA engine is ali so its not like your carrying around a boat anchor in the back.

 

When you can get a s1 with a cage down to 630kg it just shows the difference(simonp, supercharged s1 with a cage is 640kg so lose about 10kg if you went to NA) you can save weight on the rear brakes

 

850kg vs 630kg, both with a cage, be interesting to see how they compare on track.