Launching with a twin disc clutch... (Mcleod RXT) - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

xjer22x · 06-19-2013, 01:52 PM

I just wanted to share my experience of what i gathered from several discussions into one.

Hopefully this would help someone out that might be new to the Twin Disc clutch upgrade.

I am speaking from my experience using the McLeod RXT Twin Disc setup.

When i first got the clutch i was unaware of how to launch the car. When i was stock i would launch around 2500rpm at the most. So i thought, well this clutch can handle more power so why not take it up to 3500rpm.

Well needless to say it would bog all the time. The clutch was doing its job and gripping so it made feathering very very difficult.

So then i got a little gutsy and brought the RPM up to about 4000rpm. This was netting me a little bit better 60fts around the 1.83-1.78 range. Which was a big jump for me. So i looked around and heard of a bunch of people saying these clutches like RPM. So i was always cautious being i had almost a full stock driveline and suspension. Didnt wanna break anyting.

But i figured you gotta take a risk to seek a reward, so i said screw it... Brought my RPM to 5000rpm. and swiftly started letting the clutch out.

To my surprise it felt like a stock clutch again and i basically held the RPM at ~5000rpm and was able to really modulate the clutch much better this time.

So to say the least, dont be afraid to bring the RPM with a twin disc clutch and use the clutch pedal to control the launch vs the gas pedal. It was so much easier and i am confident now that i can pull consistant low 1.7's and soon 1.6's with this setup.

So hopefully this helps someone struggling with the launch that might have a similiar clutch setup. Dont be afraid to give it RPM's

linehand7 · 06-20-2013, 09:13 AM

just wondering- what are you useing for tires?

xjer22x · 06-20-2013, 10:11 AM

I have nitto NT05r's 305/45/18 - on a zo6 rim

sent from my galaxy s3. that would explain the errors.

Pro Stock John · 06-20-2013, 10:40 AM

They should call it the slipper clutch because it's impressive how long you can slip it during your passes.

xjer22x · 06-20-2013, 10:59 AM

Quote:

Originally Posted by Pro Stock John

They should call it the slipper clutch because it's impressive how long you can slip it during your passes.

haha, yeah its amazing. If i did that on a stuck clutch... i dont know if i would be able to make it home.

But with this one it actually feels better and stronger after i slip it. The ceramic on them like the heat.

cdawg705 · 07-13-2013, 05:13 PM

Ceramic clutches definitely like the heat, they will crystalize and make a squealing sound if you don't get them hot every so often. I had a south bend DD in my 07 Cummins that I had to heat up every 4-5 days of street driving.

AngelSpeedFreak · 07-15-2013, 03:08 PM

Agreed that I needed to launch a little higher once I put the RXT in.

Stock clutch was around 3500rpms. RXT likes it better around 4800rpms. (1.56 60' on Hoosier slicks)

06-19-2013, 01:52 PM	#1
xjer22x Drives: 2010 rs/ss black # 10,308 Join Date: Mar 2009 Location: hoffman estates, il Posts: 914 View My Garage	Launching with a twin disc clutch... (Mcleod RXT) I just wanted to share my experience of what i gathered from several discussions into one. Hopefully this would help someone out that might be new to the Twin Disc clutch upgrade. I am speaking from my experience using the McLeod RXT Twin Disc setup. When i first got the clutch i was unaware of how to launch the car. When i was stock i would launch around 2500rpm at the most. So i thought, well this clutch can handle more power so why not take it up to 3500rpm. Well needless to say it would bog all the time. The clutch was doing its job and gripping so it made feathering very very difficult. So then i got a little gutsy and brought the RPM up to about 4000rpm. This was netting me a little bit better 60fts around the 1.83-1.78 range. Which was a big jump for me. So i looked around and heard of a bunch of people saying these clutches like RPM. So i was always cautious being i had almost a full stock driveline and suspension. Didnt wanna break anyting. But i figured you gotta take a risk to seek a reward, so i said screw it... Brought my RPM to 5000rpm. and swiftly started letting the clutch out. To my surprise it felt like a stock clutch again and i basically held the RPM at ~5000rpm and was able to really modulate the clutch much better this time. So to say the least, dont be afraid to bring the RPM with a twin disc clutch and use the clutch pedal to control the launch vs the gas pedal. It was so much easier and i am confident now that i can pull consistant low 1.7's and soon 1.6's with this setup. So hopefully this helps someone struggling with the launch that might have a similiar clutch setup. Dont be afraid to give it RPM's __________________ SYCK SS BUILD JOURNAL- Click here

06-20-2013, 10:11 AM	#3
xjer22x Drives: 2010 rs/ss black # 10,308 Join Date: Mar 2009 Location: hoffman estates, il Posts: 914 View My Garage	I have nitto NT05r's 305/45/18 - on a zo6 rim sent from my galaxy s3. that would explain the errors. __________________ SYCK SS BUILD JOURNAL- Click here

06-20-2013, 10:40 AM	#4
Pro Stock John Writer Drives: 2010 SS / 1967 Camaro Join Date: May 2009 Location: Chicago, IL Posts: 7,221	They should call it the slipper clutch because it's impressive how long you can slip it during your passes. __________________ PROJECT HEAVY CHEVY Camaro Now: Mods for the Masses Part I \| Part II 13.15@106 1.95 \| 100% Stock 12.37@112 1.85 \| + Kooks Headers/Cats + 20" 555R + CAI + BW TB + UDP + Tune 12.06@113 1.70 \| + CD 3200 + 18" NT05R + RCR Intake + NE OTR + GPI Tune 11.84@115 1.59 \| + 3.91s + Race Star 17x7 Fronts 10.90@125 1.47 \| + GPI VVT Cam + BW Ported Heads + CD 3800

07-13-2013, 05:13 PM	#6
cdawg705 Drives: 2010 Camaro 1SS M6 LS3 Join Date: Jan 2012 Location: Texas Posts: 182	Ceramic clutches definitely like the heat, they will crystalize and make a squealing sound if you don't get them hot every so often. I had a south bend DD in my 07 Cummins that I had to heat up every 4-5 days of street driving. __________________ 2010 1SS, TR6060, TSP Forged LS3 418 Stroker Tuned by Blue Thunder Racing. (stock heads, intake, TB and rockers), Brian Tooley platinum springs, Mantic 9000, Barton shifter , BMR 1" drop, Siebon TS2

07-15-2013, 03:08 PM	#7
AngelSpeedFreak Most hated in NM.... Drives: Sold the 6POINT2, went to a 50THZ06 Join Date: Sep 2011 Location: New Mexico Posts: 2,904	Agreed that I needed to launch a little higher once I put the RXT in. Stock clutch was around 3500rpms. RXT likes it better around 4800rpms. (1.56 60' on Hoosier slicks) __________________

06-20-2013, 09:13 AM	#2
linehand7 Drives: 03 duramax 01impala 2010 2ssrs Join Date: Feb 2009 Location: lead sd Posts: 142	just wondering- what are you useing for tires?