Lamborghini Forum - View Single Post - Gallardo 2004 clutch problem egear
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Old 11-30-2019, 09:50 PM
Drew Zee's Avatar
Drew Zee Drew Zee is online now
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Quote:
Originally Posted by Hi Tech Exotic View Post
There is absolutely a lot of data to support our claims that our clutches last more than 300%. At the thread below, there is a data that was verified by Lamborghini San Francisco. Our customer drove 9k miles on our HT300 and only used 0.1 mm that means he has 98% left after 9k miles. His stock clutch only lasted about 8k miles. The customer was nice enough to give us a copy of the invoices from Lamborghini San Francisco that shows an E-gear snap when he installed the clutch and an E-gear snap after 9k miles where only 0.1 mm was used. It looks like he will get over 100K miles from our clutch.

https://www.lamborghini-talk.com/vbf...-ht300-186154/

Drew, you have tried to bash our clutches a few times. I didn't want to start an argument with you so I didn't say anything. Unfortunately you leave me no choice but to respond to your false information. We have sold over 2,000 clutches and we have never ever had any high rpm vibration or any vibration at any rpm range. If anything, all of our customers tell us that our clutches are actually smoother than a stock clutch. The take off is also smoother without the usual bucking that you get from a stock clutch. Please stop spreading false information.

Here are a few videos from our customers with high rpm revs.

This customer in Dubai in a 100 degree F doing 8k rpm. Zero vibration


Here is an R8 customer of ours racing at Bahrain Formula 1 race track. Many high rpm revs and no vibration. He has 80k miles on our clutch. Our clutch is holding perfectly even after 80k miles.

LOL Sean - you must be confusing me with others whom have also challenged your claims. This is my very first post on this topic. No need to take this personally as I am merely seeking facts.

I am simply asking for a report that clearly outlines the analysis that was done (Kevlar vs. OEM) in order to derive that 300% life increase that you continually tout.

As a mechanical engineer with close to 40 years of experience in the aerospace field that is deeply involved in the satellite design and manufacturing business, and as an expert in control moment gyroscopes and reaction wheel assemblies that also require balancing operations prior to integration into space hardware, I love data that supports conclusions. Yep...patents and all that really neat stuff to back it up too.

Bottom line is that ring gear balancing is a very involved process. You cannot simply slap the existing gear from the old clutch to your new Kevlar clutch (as you recommend) and expect it to operate properly over time. The resulting imbalance, even at low “imperceptible” levels, can result in a destroyed drive train over time. Ask me how I know.

Let me educate you a bit. For high RPM applications (I.e., reaction wheel assemblies, control momentum gyroscopes, and the like), several critical balancing stages are needed (rough balance, fine balance and lastly, P-balance) to ensure that adequate balance is attained. At the very least, the ring gear needs to be matched and balanced to the rest of the clutch assembly via drill corrections (or similar material removing operations to achieve proper balance). Yours are not.

Do you have any data at all that will allow a potential buyer to fully expect a 300% greater clutch life over OEM? Am not really interested in the “happy customer” reports, testimonials or dealership experiences that you’ve offered up so far.

This is intended to be a positive, open discussion about the facts. It is not in any way intended to be an attack, as you have unfortunately perceived it to be. I welcome any information that you can provide to help us understand the data behind your claims.
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Last edited by Drew Zee; 12-01-2019 at 01:10 AM.