Experience with twisted inputs needed

Ran a 9.48@143mph this weekend on a 1.43x 60' input shaft still holding strong.
 
dvst8r said:
Ran a 9.48@143mph this weekend on a 1.43x 60' input shaft still holding strong.
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That's pretty amazing I can't believe that material is that much better. The last TCS shaft that I had in my truck was just the standard billet and I got 5 passes out of it. Your 60' s are pretty incredible too and with that much weight. Just a side note here. How fast has your truck gone just on fuel and not spraying it?
 
Toolman said:
That's pretty amazing I can't believe that material is that much better. The last TCS shaft that I had in my truck was just the standard billet and I got 5 passes out of it. Your 60' s are pretty incredible too and with that much weight. Just a side note here. How fast has your truck gone just on fuel and not spraying it?
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I'm going to preface this by saying we have never really tuned it (as much as you can tune anything with the ssr) to run fuel only, as we never really run fuel only (other then sled pulling which we obviously setup very differently for). At the beginning of the year, our stand in driver Jade did a few fuel only passes to get his feet wet driving the truck and the best iirc was 10.11@135mph.

It really is amazing how much better that material is, and Torrey will tell you we had many many discussions and brain storms of how to keep the fat shaft before we tried it, as I was very skeptical.

Next spring we plan to do a lot more fuel only passes once we have the weight down, and some ability to actually tune it.
 
So I finished up a suncoast input shaft a couple weeks ago and going the aermet route. These still holding up?

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i hate to bring this to another direction... but when are you guys seeing stock intermediates, and outputs breaking? my truck should be ~900 hp and I'm planning to launch it decently hard at around 6k lbs, traction will probably be limited.

half of what i hear is that at my level intermediates and outputs are decently strong in stock form... RH output atleast...
 
Nitrouskix said:
So I finished up a suncoast input shaft a couple weeks ago and going the aermet route. These still holding up?

Sent from my SCH-I545 using Tapatalk 2
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Yup, don't have many passes yet this season, just a couple low 10's and one high 9.

The 9 was a 1.48 60'
 
ahale2772 said:
i hate to bring this to another direction... but when are you guys seeing stock intermediates, and outputs breaking? my truck should be ~900 hp and I'm planning to launch it decently hard at around 6k lbs, traction will probably be limited.

half of what i hear is that at my level intermediates and outputs are decently strong in stock form... RH output atleast...
Click to expand...

An RH shaft will be toast at ~900rwhp. Didn't last long at all for me once I stepped the power up.
 
I started with a billet intermediate. Coonsmile on here broke a stock intermediate with ~650hp in a vp truck.
 
Once I got a input that would hold the int shaft didn't stand a chance. The A100 input looked good after 6 pass's on it when I pulled it. That's 4 pass's more than any other shaft under full power.
 
I went with the tcs maraging intermediate. The stock one held up fine at 700-800 hp for me though

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IdahoRob said:
I spoke with Paul today at TCS, very knowledgeable guy and put up with my stupid questions. I have gone through 3 this year (twisting not breaking) but not sure what shaft we had. Anyway he gave specs on when they twist (torque), how far they can twist, and when to replace. He also went over the three different shafts and their material and ratings. Also some tips on how to make them live. We will be trying the Aermet shafts asap.
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Well the Aermet turned out to be worse, twisted after two passes. Tried another and lasted one day (photo). They never broke, but twisted so badly that they went on the shelf of sorrow and broken parts. No warranty, TCS said they can replace it for list price.

I went to Suncoasts Omega shaft and converter since and have had no problems at all this season on Max'd Out.
 
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IdahoRob said:
Well the Aermet turned out to be worse, twisted after two passes. Tried another and lasted one day (photo). They never broke, but twisted so badly that they went on the shelf of sorrow and broken parts. No warranty, TCS said they can replace it for list price.

I went to Suncoasts Omega shaft and converter since and have had no problems at all this season on Max'd Out.
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Were you breaking 300M shafts before?
 
IdahoRob said:
Well the Aermet turned out to be worse, twisted after two passes. Tried another and lasted one day (photo). They never broke, but twisted so badly that they went on the shelf of sorrow and broken parts. No warranty, TCS said they can replace it for list price.

I went to Suncoasts Omega shaft and converter since and have had no problems at all this season on Max'd Out.
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We twisted one like that last year after a hard launch that got that back tires right off the track when they unloaded. We left it in and went sled pulling right after we discovered it and then finished up the season on it. Wasn't anymore twisted when we tore it down after the season. They seem to twist a bit, but never break.
 
Well i ran the twisted sonnax shaft all winter, but the truck didnt get drove a lot. Dyno'd it, and made a lot of WOT runs on the street but never trusted it enough to do a 4wd launch on. Swapped it out this spring for a TCS Aeremet shaft and so far so good. Just got a higher stall TC(v10 stator) from phil so that will put a little more strain on it but i dont think il have any issues at my power level.

I ran a 11.51@119 saturday with a soft 1.76 60ft. Still running a stock output and im sure that will be next to go. Thinking about keying the output into the input on the tcase like MPM does...
 
ahale2772 said:
i hate to bring this to another direction... but when are you guys seeing stock intermediates, and outputs breaking? my truck should be ~900 hp and I'm planning to launch it decently hard at around 6k lbs, traction will probably be limited.

half of what i hear is that at my level intermediates and outputs are decently strong in stock form... RH output atleast...
Click to expand...

I broke a stock output last year at around 750hp. Got a used replacement off of ebay for $50, (actually bought 2 and 1 intermediate for $150). It's seen more than 50 passes at 20psi launches, as I've ramped the power to just over 800hp.
But..... The truck is only 6100lbs, and I'm still running street tires.
 
Here's another twisted TCS aermet input one to add.
5 track passes on it, without launching hard at all. Best 60' time was a 2.2
What's next? What are you guys having good luck with now?
 

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If your twisting these stock sized shafts, then there is something going on in the tranny that shouldnt be. All the top trucks in pro street are running stock sized inputs and none of us have had any problems. Ours is three years old. We run a stock intermediate as well. I think Phil Taylor said his was 2 years old. As well as Darren Morrisons. We are all in the 1.30-.140s 60ft and WAYYYYYYYYYYY over 1000p. Even in my 4wd race truck, over 400 passes on a sonnax input and its still going strong today at 100hp.

I am tempted to start doing a guarantee on our trannies for twisting or breaking inputs, because we just dont ever see it. Most of the secret is in the vb setup. But there are other things that contribute to the failures as well. Big shafts are just a bandaid for an underlying problem.
 
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