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RB Light Weight Flywheels $375


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4340 is perhaps the highest grade high tensile steel that most machine shops can machine!!! THe japanese ones that are below 5 kgs are a totally different kettle of fish they are billet cast then machined (very expensive)... Also all you guys wanting to go below 5 kg have you thought of the effect on MAIN bearingS when doing this and not haveing the crank balanced; as you would in a rebuild.... Word of warning!! Going to light would be detramentle...

free bump!!!they sound good pity i have a tripple plate!!

nice price on the flywheel.

The comment about going below 5kg on a balanced flywheel causing any kind of damage to bearings is rubbish however. You should retract the statement for fear of scare mongering for business, a tactic I'm sure you are not advocating.

I'd like to point out that 6kg odd is still alot lighter than factory stock and for those who don't have $500+ to spend on a lighter unit it offers a cheap but, very significant performance increase.

the flywheels are CNC machined but are they also balanced at a significant rpm?

Guest darrinspencer
If you can't get 10 people, are we still able to get them even if its a bit more?

Ok

We can buy 6 now for $375 each at the same price as before

The group buy will remain open to try and sell the other 4.

The company is getting 20 made at the moment and they will be ready in 2 weeks

I will PM all people who wanted one and arrange payment once they are ready to ship.

Sky30: It depends on who you listen to. From my understanding, after fitting the flywheel the following is true:

- Torque will decrease, thanks to less inertia , due to less mass on the moving flywheel.

- The engine will rev faster, thus generating exhaust gas more quickly, thus spooling up the turbo faster. (This is faster in time, not faster as in lower rpm point) Unknown exactly how faster it'll rev... depends on load and enviroment, etc.

Guest Robo's

Ive been Reading abit about these, apparently its like dropping the weight by about 100kg in first gear, so you could imagine the accelaration. It takes less effort to run. The motor will spin freer, but noticeably idle a little rougher if you go too light.

Theres a couple of good reads on the net on these. Do a search!!

They're a wee bit of a trade off... lose a bit of torque down low, but who the hell cares because you're into the meaty power/torque zones faster, so it's all good. :)

If you really care about torque (as we all really should), do a 3L conversion or put some cams in.

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