BTW...that slider in the center is also why the carbon fiber driveshaft is only 2 lbs lighter than stock. That slider has to be made out of steel in order to not break.
Found out why we can't really get a lightweight driveshaft as of now.
I called the driveshaft shop and talked with Frank out there, he seemed very knowledgeable. He said that since Supra driveshafts don't break very often
he has not gotten a tremendous amount done in that car.
He has tested out the strongest aluminum available and has done testing on it but it broke after about 50 cycles. The problem lies where the Supra has a direct bolt on to the transmission instead of the driveshaft sliding into the tranny. That means that the slide deal has to be built in the driveshaft and that is where all the weight comes from.
His next project is going to be trying to build a 3.25 inch aluminum driveshaft for the Supra and if he can get it done we will have a driveshaft that will only be about 11lbs compared to the stock weight of 20lbs!!! That would be very cool. Everyone needs to call them and say that they need one so it will motivate him more to do one....if not really that many people want one than he really has no reason to hurry up and design it.
What he has right now is a chromoly driveshaft that will hold all the power and is only a couple lbs lighter but also eliminates the carrier bearing in the center, which will transfer more power after eliminating this piece. He also has a replacement for the rear rubber piece that bolts to the rear end...you don't have to replace this but he says that if you are making over 1000hp that stock piece won't last very long. Also, I think this replacement piece will transfer more power because it won't be moving back all the time during load transfers.
I am still not exactly sure what I am going to do but the chromoly driveshaft is $400 and the end piece is $200. He said that the end piece is so high because of the time that is in building one of those. He said also that he can have a driveshaft made within 2 days.
Just thought that everyone might like to know that about their Supra driveshaft system.
he has not gotten a tremendous amount done in that car.He has tested out the strongest aluminum available and has done testing on it but it broke after about 50 cycles. The problem lies where the Supra has a direct bolt on to the transmission instead of the driveshaft sliding into the tranny. That means that the slide deal has to be built in the driveshaft and that is where all the weight comes from.
His next project is going to be trying to build a 3.25 inch aluminum driveshaft for the Supra and if he can get it done we will have a driveshaft that will only be about 11lbs compared to the stock weight of 20lbs!!! That would be very cool. Everyone needs to call them and say that they need one so it will motivate him more to do one....if not really that many people want one than he really has no reason to hurry up and design it.
What he has right now is a chromoly driveshaft that will hold all the power and is only a couple lbs lighter but also eliminates the carrier bearing in the center, which will transfer more power after eliminating this piece. He also has a replacement for the rear rubber piece that bolts to the rear end...you don't have to replace this but he says that if you are making over 1000hp that stock piece won't last very long. Also, I think this replacement piece will transfer more power because it won't be moving back all the time during load transfers.
I am still not exactly sure what I am going to do but the chromoly driveshaft is $400 and the end piece is $200. He said that the end piece is so high because of the time that is in building one of those. He said also that he can have a driveshaft made within 2 days.
Just thought that everyone might like to know that about their Supra driveshaft system.
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G
sounds very promising!!! if this guy could make a driveshaft that saves 9 lbs and still have the same strength and durability of the stock unit, i would be really interested in buying one. i'm sure many other people would be interested also, keep us posted
Yea, I think if like 7 or 8 of us all bought them the price would be lowered and he would actually get on it and do the design since he will know there is a market for them.jeremy haakonso said:sounds very promising!!! if this guy could make a driveshaft that saves 9 lbs and still have the same strength and durability of the stock unit, i would be really interested in buying one. i'm sure many other people would be interested also, keep us posted
How many people are actually interested in this sort of thing on here?
I've always wondered...... what exactly is the purpose for that universal joint in the center of the driveshaft?
-Mike
-Mike
TT_6SPD_95 said:I called the driveshaft shop and talked with Frank out there, he seemed very knowledgeable. He said that since Supra driveshafts don't break very often
He has tested out the strongest aluminum available and has done testing on it but it broke after about 50 cycles. The problem lies where the Supra has a direct bolt on to the transmission instead of the driveshaft sliding into the tranny. That means that the slide deal has to be built in the driveshaft and that is where all the weight comes from.
His next project is going to be trying to build a 3.25 inch aluminum driveshaft for the Supra and if he can get it done we will have a driveshaft that will only be about 11lbs compared to the stock weight of 20lbs!!! That would be very cool. Everyone needs to call them and say that they need one so it will motivate him more to do one....if not really that many people want one than he really has no reason to hurry up and design it.
What he has right now is a chromoly driveshaft that will hold all the power and is only a couple lbs lighter but also eliminates the carrier bearing in the center, which will transfer more power after eliminating this piece. He also has a replacement for the rear rubber piece that bolts to the rear end...you don't have to replace this but he says that if you are making over 1000hp that stock piece won't last very long. Also, I think this replacement piece will transfer more power because it won't be moving back all the time during load transfers.
I am still not exactly sure what I am going to do but the chromoly driveshaft is $400 and the end piece is $200. He said that the end piece is so high because of the time that is in building one of those. He said also that he can have a driveshaft made within 2 days.
Just thought that everyone might like to know that about their Supra driveshaft system.
G
For the record (and i'm sure you all know this but...)
Replacing your drive shaft with a lighter one doesn't physically produce more HP.
It does, however, reduce the rotational mass of the drive train.
This reduces the parasitic loss (power robbed since more weight = more work to turn) and lets you use more of the power you already have.
It's letting you keep more of what's already yours.
Just a friendly heads up incase those damn LS1 guys start trolling around.
Alan
Replacing your drive shaft with a lighter one doesn't physically produce more HP.
It does, however, reduce the rotational mass of the drive train.
This reduces the parasitic loss (power robbed since more weight = more work to turn) and lets you use more of the power you already have.
It's letting you keep more of what's already yours.
Just a friendly heads up incase those damn LS1 guys start trolling around.
Alan
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