carbon fiber driveshaft???
Just got an e-mail from Bryan at ACPT and found that we will need 10 people to get the $1095 price. For 5 people, he can only offer $1195. Reason is that people have been buying them at their asking price of $1395 ($1295 for referrals, ie. from G35 forums).
Based on the price fluctuations, it seems that there is a bit of margin built in. They should just make it a mass produced product to maximize their sales/profit.
Based on the price fluctuations, it seems that there is a bit of margin built in. They should just make it a mass produced product to maximize their sales/profit.
Just got an e-mail from Bryan at ACPT and found that we will need 10 people to get the $1095 price. For 5 people, he can only offer $1195. Reason is that people have been buying them at their asking price of $1395 ($1295 for referrals, ie. from G35 forums).
Based on the price fluctuations, it seems that there is a bit of margin built in. They should just make it a mass produced product to maximize their sales/profit.
Based on the price fluctuations, it seems that there is a bit of margin built in. They should just make it a mass produced product to maximize their sales/profit.
well i want the driveshaft, at $1400 or $1100... i doubt we will get 10 people but we can try. im willing to wait a month. what r u guys wanting to do? try to find two more relatively quick and go ahead and jump on it at $1200? ive got a guy that will probably be down to join the gb but might need a few more weeks to get the rest of the money. u guys know anyone else that might be interested? ill post this up on the v35 facebook board and see if anyone bites...
I also want the driveshaft, but am in no hurry to get it. And given that the previous group buy was at $1095, I feel that it's a matter of principle that I get it at the same price. Let's see how many people we can get and perhaps we may be able to negotiate a better price than $1195 if we get close to 10 people.
Folks, the decision to purchase the ACPT carbon fiber driveshaft versus other aluminum driveshafts should not just be based on cost and weight considerations. Of utmost importance is safety. I recently had a discussion with another member in the linked thread below, and found that using a 1pc aluminum shaft may not be the safest approach to saving weight: https://g35driver.com/forums/engine-...-delete-3.html
A very good point brought up by Dr. Ephil was that during an accident or driveshaft failure, the driveshaft could potentially enter the cabin or exert very large forces on the car causing further damage. A carbon fiber shaft would simply shred, as highlighted on the ACPT website.
We all understand that cost is very important, but never at the expense of safety. There's a reason the 350Z and GTR, both which use a single driveshaft, use carbon fiber as the material.
A very good point brought up by Dr. Ephil was that during an accident or driveshaft failure, the driveshaft could potentially enter the cabin or exert very large forces on the car causing further damage. A carbon fiber shaft would simply shred, as highlighted on the ACPT website.
We all understand that cost is very important, but never at the expense of safety. There's a reason the 350Z and GTR, both which use a single driveshaft, use carbon fiber as the material.
Thanks for your answers, please add me to the list for the next batch. At my local track a ds loop is needed on any car running slicks no matter the et and on cars running quicker than 11.49. Cars running 11.49 or slower on street tires don't need one. Just a thought...an addendum under your ad advising customers to consult track rules if they plan on racing their car so nobody gets surprised when they find out they can't race without a loop. Or...well...you already know.
I also want the driveshaft, but am in no hurry to get it. And given that the previous group buy was at $1095, I feel that it's a matter of principle that I get it at the same price. Let's see how many people we can get and perhaps we may be able to negotiate a better price than $1195 if we get close to 10 people.
dont feel slighted on the price difference, They didnt make much if any money on our order. The reason is the ends. Aluminum vs Steel. One is easier to work with vs the other. We got the Aluminum ones but the work required to balance was far more "hours per part" than originally expected. Steel is much more user friendly and a bit cheaper. (maybe I have this backwards)
Either way they were very clear on giving us that price because we were the frist R&D group since it had been a few years since the last CF DS were made.
after shipping I was just over 1100 so its really not that big of a price diff anyways.
Early Bird always gets the worm. You might get one, but it would be the biggest if you wait. lol
"thats what she said"
Be sure to have a decisive method of payment - if the vendor is not organizing the GB, you might have to make arrangements for payments to funnel through you until terms are met (enough orders, enough deposit, etc).
Once that is done, post a link in this thread and be ready to spend way more time than you intended on facilitating the GB (trust me, I know).
Good luck - let us know when it's ready
i lol'd when i read this, but you brought up a good point. the truth is, its a very real danger, and im sure you already know that, but i think the reason why happens was never really pointed out in this thread. it takes a stupid-crazy non-vq attainable level of torque to shear a metal one piece driveshaft in two pieces. you probably wont ever see this. it does however come flyin through the floorboard whenever the u-joints break. this happens often at dragstrips... usually right as you come out of the burnout box and hit dry pavement. its also the reason why the tracks still require a driveshaft loop on cars with cf shafts. for some time, i was still under the impression that these were safer because they would "thread-out/disintegrate" upon failure, but anything rotating at 7000 rpm is coming through the floorboard if the u-joint breaks. the driveshaft loop is what provides the safety in that circumstance, not the fact that the ds is carbon fiber... this makes the aluminum shaft a lot more attractive if i overlook baller-factor.
A driveshaft itself snapping is practically unheard of and of no worry to me, I'm not planning on turning my G into a fully blown top fuel drag car anytime soon.
Good luck with the GB, if it happens it would be great if a dyno comparison could be done between the CF and Aluminum shafts. Back to back pulls on the same dyno, same mods on cars except for shafts.
edit-just read above post...nice to know you got it and can make an intelligent reply
Last edited by Dr. Ephil; Jun 27, 2012 at 01:01 AM.
I'm a Trucker, I've had u-joints snap and drop a shaft more than once. On this one particular Semi I was driving the front u-joint on the rear ds snapped and dropped the front of the ds on the road, no loop.
It caught a pot-hole and picked up the rear of my truck and 50,000lbs on the trailer half a foot off the ground before it all slammed down, I was only going 30 kmh. Scared me sh!tless but I was unhurt, afterwards found out it destroyed the rear diff from the shaft being jammed into it. At 80kmh it would have f@cked me up good.
It caught a pot-hole and picked up the rear of my truck and 50,000lbs on the trailer half a foot off the ground before it all slammed down, I was only going 30 kmh. Scared me sh!tless but I was unhurt, afterwards found out it destroyed the rear diff from the shaft being jammed into it. At 80kmh it would have f@cked me up good.
Not in the price range I'm looking to spend on a ds for my car and mods. I'm not bashing this C/F shaft but unless you're F/I and looking to get into boost as quick as you can the Z1 or other quality light weight aluminum one-piece shaft is more suitable for you imo.