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I’ve got a spyder rs inbound and am interested in the gb . What’s the expected timing?
The web page description confuses me a bit. Do you need a second person to apply brakes or not? The description says no, but then yes. —- Never mind. Saw the demo video at the head of the thread. Answered the question.
Quick question here, how do you keep from having the steering turning? I’m doing one wheel at a time and jacking from the front jacking point my steering turns while I add torque to the Renntorq.
When I’ve done it with a 4’ breaker bar, I’ve never had an issue. I always apply downward pressure and that seems to make it easier for me. Looking forward to a GB so I can try this tool out.
another option is to have someone in the car holding the wheel.
If you are very careful to align your body so that you are pushing on the breaker bar parallel to the axis of the wheel when it is aimed straight forward, it will not cause the wheel to turn. If I am just a little off, I rest my knee against the wheel as I push down on the breaker bar, it will stabilize the wheel enough so that it will prevent the wheel from changing its position. I change my wheels often, and what you describe was an issue at first, but is no longer.
Hope that helps.
HI Adrift, it looks like the video helped answer your question. If you have any others just let me know.
Should we add you to the list?
Thanks,
John
Originally Posted by Adrift
I’ve got a spyder rs inbound and am interested in the gb . What’s the expected timing?
The web page description confuses me a bit. Do you need a second person to apply brakes or not? The description says no, but then yes. —- Never mind. Saw the demo video at the head of the thread. Answered the question.
Great unit and John is always available to answer any questions.
Although i got 5 bolts on my new GTS still a lot of drama with the center locks but the tool really helps.
Discount will be
$125 for >5 participants
$150 for >10 participants
$175 for >15 participants
We'll plan on closing it this friday 1/19. This is a good opportunity to get in at a discount to our current pricing. This will get you ahead of an inflation related increase coming on Feb 1st this year.
After purchased my dream car last fall, a 991.1 GT3, I quickly fell in love with every aspect of it except one thing - wheel removal. Using the conventional long breaker bar/torque wrench combo, along with the need to have the car running and a 2nd person inside to assist, left something to be desired. I needed to find a better way.
As a number of youtube videos show, the Porsche factory uses a more elegant, quicker and safer method to mount the wheels on the GT3 assembly line. Their system uses a electrically driven torque multiplier along with a custom reaction arm to apply torque to the nut.
A similar concept was used to develop the new tool shown in the video below called the RENNtorq Center Lock Removal Tool. The tool greatly simplifies the wheel removal and installation process for 991.1/.2 GT3/GT3RS/GT2RS models, and fits 997.2 GT3/GT3RS models as well. A motorsport grade torque multiplier is used the convert 95 lb-ft of manual input torque to 443 lb-ft of output torque. The torque multiplier has a 1/2" drive input, and a 3/4" drive output which allows for a direct connection to the factory supplied socket. Each multiplier is tested and certified to a specific multiplication factor (roughly 4.7:1) which allows you to precisely calculate the input torque required to secure the center lock nut. A custom reaction arm counteracts the torque applied to the nut by applying a counter force to the spoke of the wheel. The reaction arm is covered with a polymer material strong enough to apply the required force, but soft enough to eliminate any risk of wheel damage. The system allows you to easily remove the center lock nut with just a conventional 20" long, 1/2" drive breaker bar/torque wrench with an amount of force similar to what is required to remove a lug on a car with a regular five lug bolt system. The RENNtorq tool requires only moderate pressure be applied to the brake pedal inside the car, meaning the car does NOT need to be running, and you do not require the assistance of a second person to either press the brake hard or hold the steering wheel steady.
The prototype for the tool has been beta tested at a Porsche dealership for about a month and a half and they have decided to purchase it. The service manager liked that the tool turned wheel removal into a straight forward one man job, and that he didn't need to pull anyone off other work to assist with wheel removal or installation. I will be manufacturing more units for myself and for a few others, and there will be a few additional units available if anyone else on Rennlist would like one. The price of the unit is driven by the motorsport grade torque multiplier (light weight, certified, capable of 700 lb-ft+ if needed to break lose stuck nuts) and the custom nature of the reaction arm. For those interested in getting one of these tools during my next manufacturing run the price will be $2,200 which will include a case, certification, and the tool. No more dreading the removal of your center locks - it's now as simple as working on a 5-lug Porsche.
01-07-2024, 09:13 PM
