So I was driving my new 599XX over the weekend, and I noticed the technicians securing my wheels with a single, center nut. What I did not notice was any sort of pin/hole arrangement to help transfer the torque to the wheels. Seems to me that just tightening down a nut would not be enough to hold that wheel on there! Anyone else have a 599XX or other car with this arrangement?
Forums » Grassroots Motorsports » Center Lock Wheels
1
2
1
2
-
April 7, 2010 9:55 a.m. pinchvalve SuperDork
-
April 7, 2010 10:13 a.m. Per Schroeder Technical Editor/Advertising Director
Aren't the center hubs splined?
-
April 7, 2010 11:02 a.m. TJ Dork
So you have both a 599XX and a Kia Rondo?
Why are these called signatures when they are not in cursive?
-
April 7, 2010 11:04 a.m. amg_rx7 Reader
TJ wrote: So you have both a 599XX and a Kia Rondo?
Sure. Doesn't everyone have both a 599XX and a Kia Rondo?
-
April 7, 2010 11:41 a.m. mad_machine SuperDork
I am pretty sure they are splined
Non-Sequitor Alert!
-
April 7, 2010 11:50 a.m. DILYSI Dave SuperDork
I know that a lot of the formula car center locks have drive pins. The center nut holds the wheel on, but the pins engage holes in the back of the wheel, and that is what transmits torque.
I know that some old school stuff used splines, but they may have moved away from that, as splines can make it hard to remove the wheel.
-
April 7, 2010 4:35 p.m. TJ Dork
mad_machine wrote: I am pretty sure they are splined
Kia Rondo's or 599XX's?
Why are these called signatures when they are not in cursive?
-
April 7, 2010 5:45 p.m. dyintorace Dork
I wondered the same thing about the GT3 after reading an article about it recently. It did mention that the wheel requires 369lb-ft of torque!
Gainesville, FL
-
April 9, 2010 6:29 a.m. pinchvalve SuperDork
Yeah, the GT3 is another one. I want to see the inside of one of these wheels. And yes, I am totally full of BS. I mean, come on, a cool guy like me? I don't really own a Kia Rondo!
"Don't Sweat the Petty Things." Yes, and Don't Pet the Sweaty Things.
-
April 9, 2010 9:45 a.m. pigeon HalfDork
I did some poking around to try to see the backside of those GT3 wheels or the hub face and came up blank, but I read somwhere that there's 5 studs on the hub that lock into the wheel, right where the standard wheel studs would be. I suppose the nearly 400 ft-lbs helps too. Interesting that Porsche gives owners the special socket to drive the centerlock nut but not a wrench to drive it with.
-
April 9, 2010 10:34 a.m. Matt B Reader
dyintorace wrote: It did mention that the wheel requires 369lb-ft of torque!
That will be one big cheater bar!
-
April 9, 2010 11:54 a.m. sobe_death Reader
I always thought that those things had a taper on the hub and inside the wheel, plus immense torque specs to keep them from spinning.
-
April 9, 2010 2:52 p.m. z31maniac Dork
Matt B wrote:
dyintorace wrote: It did mention that the wheel requires 369lb-ft of torque!
That will be one big cheater bar!
My understanding is they sell a "torque multiplication wrench" for extra.
How that works I've no idea.
-
April 9, 2010 3:33 p.m. njansenv Reader
Most tq multipliers use a planetary drive to multiply tq. (4x, 8x etc.) Handy buggers.
Nathan
-
April 9, 2010 3:38 p.m. skruffy Dork
Yep, unless you're extraordinarily fat or have a really long cheater bar you'll need a torque multiplier to properly tighten the nut. I've got one, they're really handy for not having to kill yourself tightening stuff over 200ft-lbs.
I've never had the wheels off my GT3RS or my 599, but I'll be sure to post pictures when I do
-
April 9, 2010 3:47 p.m. Bumboclot New Reader
I'm curious as well. It would appear that the 599 GTO that I ordered has 5 lugs instead of the center lock.
Link is HOT!
-
April 9, 2010 3:56 p.m. DILYSI Dave SuperDork
Bumboclot wrote: I'm curious as well. It would appear that the 599 GTO that I ordered has 5 lugs instead of the center lock.
Link is HOT!
Those are simulated lug nuts. It has center locks under the face 5 lug...
-
April 9, 2010 4:28 p.m. M030 HalfDork
How would one convert from 5-lug to center locks? I'm guessing no one makes a conversion kit. Center-lock BBS wheels would look bad ass on my Boxster.
- Brian
-
April 9, 2010 6:10 p.m. iceracer HalfDork
alot of the older sports cars had center locks. Had a TR3 that came with a lead hammer that you used to hit the wings on the nut.
-
April 9, 2010 6:11 p.m. JThw8 SuperDork
M030 wrote: How would one convert from 5-lug to center locks? I'm guessing no one makes a conversion kit. Center-lock BBS wheels would look bad ass on my Boxster.
Technically they make conversions for the dayton wire wheels and others like them so I guess its possible there would be one for BBS'
OTTER: "I think that this situation absolutely requires a really futile and stupid gesture be done on somebody's part." BLUTO: "We're just the guys to do it."
-
April 9, 2010 7:00 p.m. njansenv Reader
skruffy wrote: Yep, unless you're extraordinarily fat or have a really long cheater bar you'll need a torque multiplier to properly tighten the nut. I've got one, they're really handy for not having to kill yourself tightening stuff over 200ft-lbs. I've never had the wheels off my GT3RS or my 599, but I'll be sure to post pictures when I do
369 ft lbs isn't "that" much though. 3ft bar= 123lb pull (or push). Quite doable for most.
Nathan
-
April 10, 2010 1:44 a.m. Appleseed SuperDork
Give me a lever long enough, and I can move the world.
-
April 10, 2010 7:47 a.m. maroon92 SuperDork
XBL GamerTag: bcbrownell Current Cylinder Count: 47
-
April 10, 2010 8:38 a.m. Wally SuperDork
skruffy wrote: Yep, unless you're extraordinarily fat or have a really long cheater bar you'll need a torque multiplier to properly tighten the nut. I've got one, they're really handy for not having to kill yourself tightening stuff over 200ft-lbs. I've never had the wheels off my GT3RS or my 599, but I'll be sure to post pictures when I do
It makes loosening wheel bearings alot easier too
A little stupid goes a long way
-
April 10, 2010 7:21 p.m. porksboy Dork
I used to have a hard time tourqeing the crankshaft bolt on Mercedes turbo diesels. I weighed 125# at the time and if I remember the bolt tourqed to 280#. Even alll my weight on the tourqe wrench wouldnt make it click. No room for a tourque multplier behind the radiator. Not a good idea to put a cheater bar on a tourque wrench either.
I worry about reincarnation. What if I’m not hung as well next time around? The Buddha said Not to grasp- life is transitory. Damn it some things a man gets used to grasping.
You'll need to log in to post.
Yes or No
What’s your favorite British sports car?
Triumph
45%
MG
13%
Austin Healey
19%
Aston Martin
3%
Jensen / Jensen Healey
3%
TVR
13%
Morgan
3%
Check back soon for the next poll. View all polls
