Sequential/Paddleshift/Flatshift

robfenn · 29 November 2010

Finally, got a video up demonstrating our setup. The car is stock engine wise, although is a bit quicker with short gears and weighs a little over 1000kg.

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http://www.youtube.com/watch?v=fpKFmBmX4vM

AdvansCPAP · 29 November 2010

WOWWW...

Ponyboy · 29 November 2010

Oh...my.

That thing is quick! I wonder how much time that's saving you on track? Man, I really wish they'd mass produce these things.

Dear Santa...

oscar_driver · 30 November 2010

GLORIOUS!

NSX's have the best sounding V6's ever made, PERIOD!

roondogg · 30 November 2010

How much was this set-up? I understand that it took you a while to get it. Simply awesome!!

robfenn · 30 November 2010

Off the top of my head you're looking at £25-30k which is around $40k for everything. Expensive, but the car is being built for endurance racing, so needs to work well!

Our difficulty was the crank case, which are made in batches. There are quite a few second hand gearboxes on the market now as they were widely used by European touring cars (now using Xtrac). Have just snapped up a second Hewland for our Elise too.

Maybe one day the NSX will have a central seat like the Elise too!

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EdinKali · 30 November 2010

The Aston was really holding you up in the corners. Your lap times dropped a good second or so after you got by him. Nice driving!

roondogg · 30 November 2010

robfenn said:
Maybe one day the NSX will have a central seat like the Elise too!

That's what I am talking about!! Center drive FTW! I had this idea but it seemed to difficult to tackle. What steering rack could you use? I think Quaiffe makes one.

The price of the whole set-up seems cost prohibitive to me. I wish it was better. Are the gears really loud? As loud as the exhaust in the midrange?

Good show!!

SFDreamer · 1 December 2010

Nailing those shifts is music to my ears! Very very cool!

scorp965 · 1 December 2010

Ikeya produces a paddleshift conversion for S2000 (which uses solenoids to actuate the shifter position and clutch engagement), not as elegant a solution as a complete replacement gearbox, but an interesting solution.

This is a Honda S2000 with a factory gearbox, running the Ikeya conversion:

http://www.ikeya-f.co.jp/en/mfps.html

robfenn · 1 December 2010

Yeah, you can get the Ikeya for the NSX. You still need a clutch though.

The Hewland is very loud, but then it is never intended as a road 'box so no surprises there. The gearbox whine is just as loud as the engine...

scorp965 · 1 December 2010

robfenn said:
Yeah, you can get the Ikeya for the NSX. You still need a clutch though.

The Hewland is very loud, but then it is never intended as a road 'box so no surprises there. The gearbox whine is just as loud as the engine...

The 'paddleshift' uses a solenoid and computer to actuate the clutch for you, directly above the transmission housing. It's a different product from the Formula Shifter they released a few years ago (which is now out of production).

This new product, which appears to still be under development, has adjustable modes (street, automatic, circuit), and seems relatively sophisticated for a tuner company product. There is even a call on Ikeya's website for OEM applications; perhaps an optimistic goal, but interesting none the less.

FogCityNSX · 2 December 2010

WOW! That exhaust sounds wicked! What are you running?

Those paddles are AWESOME!

docjohn · 2 December 2010

If you don'yt mind me asking ..why paddle shifters over the up/down shift stick I see on most US race cars with a sequential diff.

roondogg · 2 December 2010

scorp965 said:
The 'paddleshift' uses a solenoid and computer to actuate the clutch for you, directly above the transmission housing. It's a different product from the Formula Shifter they released a few years ago (which is now out of production).

This new product, which appears to still be under development, has adjustable modes (street, automatic, circuit), and seems relatively sophisticated for a tuner company product. There is even a call on Ikeya's website for OEM applications; perhaps an optimistic goal, but interesting none the less.

Keep us posted on their development. Is there an application for the NSX?

robfenn · 2 December 2010

docjohn said:
If you don'yt mind me asking ..why paddle shifters over the up/down shift stick I see on most US race cars with a sequential diff.

You will find in a lot of international race series, paddle shift is not permitted in the rules. However, it is fine in our series, so we've done it! As you can imagine, we can have both hands on the wheel at all times, which is advantageous.

We are building the car for 24hr events, so driving comfort is paramount. The geartronics sytem actually performs automatic upchanges, so it's almost like an auto!! :biggrin:

Jetpilot3 · 4 December 2010

From the photos in your blog the NSX looks the bomb!

What happened after the fire? Much damage?

robfenn · 4 December 2010

It looked worse than it was, but the wiring loom was an expensive loss. All back together now ready for next season :biggrin:

Sandro · 4 December 2010

Beautyful,must be enyoing drive it.If only isn't so expencive.:frown:

Sequential/Paddleshift/Flatshift

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