New Tremec transmission

[olddog]

A member for 8 years and only 74 posts suggests a quiet fellow.

With the plague, people dying, and political crap happening, and not knowing any personal circumstances, I vote to drop it and let it pass.

No point in piling on when someone has already blown a gasket. Just let them know they are still loved.

[patrickt]

Originally Posted by olddog

Just let them know they are still loved.

Uhhhh, what if they're not?

[hauss]

Great all you guys can talk about is banning people instead of machining a new rail for the5th gear reverse.

[patrickt]

Originally Posted by hauss

Great all you guys can talk about is banning people instead of machining a new rail for the5th gear reverse.

Naaah, you've got to work really, really, really hard to get banned from here. Otherwise, Jamo would have banned me years ago.

[eschaider]

Originally Posted by patrickt

Naaah, you've got to work really, really, really hard to get banned from here. Otherwise, Jamo would have banned me years ago.

Patrick, God knows your factual, literal responses to various posts and posters have provided me (many of us?) with good information and ideas along with an unbridled and entertaining relief over the years, but this one, I think, needs some healing time, as Rick suggested. I took the cheap shot out of the end of my previous post because it added nothing positive and only served to stir the pot (I know, I know).

BTW I believe you are right about Jamo and what it takes to get banned. That is an achievement few are capable of. Look how long it took Evan.


Ed

[hauss]

So as I was saying I am about to talk to a machinist friend of mine but before I do anyone interested in a 5th gear reverse rail for a tko 600 ? It is new and improved no more roll pin removing to much material from the rail making it weak.

[eschaider]

Originally Posted by hauss

So as I was saying I am about to talk to a machinist friend of mine but before I do anyone interested in a 5th gear reverse rail for a tko 600 ? It is new and improved no more roll pin removing to much material from the rail making it weak.

Do you have a design drawing and price?


Ed

[hauss]

Originally Posted by eschaider

Do you have a design drawing and price?


Ed

Not yet, basically it will be a exact replacement with a clip holding the finger to the rail. { Just like the new tkx} Instead of the roll pin. The new design will allow more material to remain in the rail; hence making it stronger. I am open to suggestions trying to keep it simple and low cost.Just want to make it worth my friends time and seeing what type of interest.Maybe even sell to silver sport or hanlon or some of the other premiere Tremec dealers . I do not know if this will fix the problem honestly but it seems a step in the right direction. Unlike the left direction everyone seems to be going

[olddog]

Originally Posted by hauss

Not yet, basically it will be a exact replacement with a clip holding the finger to the rail. { Just like the new tkx} Instead of the roll pin. The new design will allow more material to remain in the rail; hence making it stronger. I am open to suggestions trying to keep it simple and low cost.Just want to make it worth my friends time and seeing what type of interest.Maybe even sell to silver sport or hanlon or some of the other premiere Tremec dealers . I do not know if this will fix the problem honestly but it seems a step in the right direction. Unlike the left direction everyone seems to be going

Hauss,

A good machine shop or machinist should understand better than me what I'm about to say.

You have to do more than just grab a piece of steel and make it the same size and shape of the original piece. It can be done and engineers reverse design parts, for equipment that is no longer made, every day. I'm not trying to discourage you, rather trying to save you from having to do this 3 or four times to get it right.

There are many grades or types of steel. Any steel can be hardened by heat treating or ion nitride hardening. Harder is usually stronger, but more brittle. Hard steel is difficult and costly to machine, so a milder steel is preferred to machine and then harden it for strength and wear resistance. Heat treating causes shape changes, especially if not properly stress relieved. Nitride only heats the metal to 900 deg so dimensions are more stable. Heat treating can harden deeper than Nitride hardening.

When tooling is used to cut steel it leaves sharp micro cracks on the surface. Normally not a problem for soft mild steel that will not be hardened and not repeatedly cycled in heavy load conditions. These micro cracks are crack propagation points - kind of like a stone ship in a windshield. Machined areas should have the finish ground to remove the micro cracks. Polishing is needed for harder steels. Also there should never be a sharp corner - perfect 90 deg change in direction. These should be radiused. The corner should have a minimum of 1/16" radius for most stuff. Some applications 3/16" or more.

Start by doing a hardness test of an existing broken shaft. Also try to identify what the steel is.

[Anthony]

Interesting thread on TKO problems

https://www.corral.net/threads/probl...tranny.678765/

[eschaider]

Originally Posted by Anthony

Interesting thread on TKO problems

https://www.corral.net/threads/probl...tranny.678765/

The sad story that Tallimeca (and 11 pages of other owners) tells is just one of many similar types of encounters TKO owners have had with Tremec Customer Service over the years. In the FWIW bucket his story was near the beginning of the TKO era almost 20 years ago now. Time not withstanding, the experience he had with the TKO and Tremec Customer Service has not changed apprecibly today.

It is only because buyers wanted to believe their treatment was not the norm that Tremec got away with this kind of customer service for so long and has been able to prosper despite the poor customer service. Buyers today have choices, more so than in the past and it is to their advantage to explore them.

The strongest message you can send to manufacturers like this is delivered with your money and shoe leather — especially in times like these.


Ed

[Azhinoon]

Very informative and entertaining. I wound up cryo gears and updating internals on a T-5 because 2 to 3rd gears failing. It was close to speed shift but a hard shift. Eight years ago. Seriously wanted to put in tko 600 but saw all the issues people were having so went the route i did.
What about the Richmond Street 5 speed instead of the tko? What would the drawbacks be? Not enough knowledge of both to determine. Thanks

[Azhinoon]

Very informative and entertaining. I wound up cryo gears and updating internals on a T-5 because 2 to 3rd gears failing. It was close to speed shift but a hard shift. Eight years ago. Seriously wanted to put in tko 600 but saw all the issues people were having so went the route i did.
What about the Richmond Street 5 speed instead of the tko? What would the drawbacks be? Not enough knowledge of both to determine. Thanks

[hauss]

Well I was thinking those of us who already have the tko 600 and maybe even your t-5 .not sure if it has the same rail as the 600. All I am saying is it would be a low cost alternative for a chance on a better transmission. It would certainly be a big middle finger to Tremec for not fixing the issue. Trying to drum up some interest here starting to think maybe this is why tremec just chose another direction.

[eschaider]

+1 on everything Rick just said Hauss.

If you still have any of the broken shafts could you post a picture of the pieces. I am interested in what the broken parts look like. If possible a reasonably close picture of the fracture surface would be nice.

Thanks.

Ed

[hauss]

I am not the best at sending pics. I will say I do believe the pin is over hardened causing it to crack.

[hauss]

Found the problem I have another post labeled TKO 600 with pictures already.

[eschaider]

There are a number of high strength steels like 4330 /4340 / 8620 /9310 that you can use. Probably any will work. Get it centerless ground and cut the o-ring groove and you should be done. I took a quick look at one of the online metals suppliers and a centerless ground 36 inch long ¾" diameter bar of W1 tool steel costs about $24.

I don't know the length of the Tremec shaft but lets say 6 inches. That means the raw material for 6 shafts would come to about $4 per shaft. Cut an o-ring groove on one end, send it out for heat treat and you would probably be around $10 or $15 cost per replacement shaft. If you wanted you could get exotic with 9310 or 4330 and have a super piece.


Ed

[hauss]

You forgot the man doing the work part. If I could drum up some interest who among you will shell out $100.00 per rail. If I can get 10 of you then I will proceed.

[eschaider]

I think the challenge you are going to run into here, Hauss, is that the average guy can buy the steel cheap, machine a snap ring groove on his buddies lathe, buy the snap ring for less than a dollar at McMaster and get the shaft heat treated, with some luck and talking for way less than the $100 target you are looking at.

That makes it a bad business proposition for a for profit business because as you said the guy doing the work was left out / forgot. Just some of the sad economics associated with this type of business ...


Ed