I thought you said he didn't test the stock gear strength?Quote:
Originally Posted by 2fnloud
edit:saw above post. Information noted.
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I thought you said he didn't test the stock gear strength?Quote:
Originally Posted by 2fnloud
edit:saw above post. Information noted.
well saying that stronger metal = stronger gears isnt exactly true...
every metal has its own yield strength (the amount of strength before it shears or 'breaks'), it also has a modulus of elasticity (stiffness). on top of those, there is weight, and a lot of other factors that play into it all. my point being, even if the metal is stronger, its not always better. there is a reason why there arent gears made out of diamond... yeah its very strong, but its so hard that its too brittle.
with that being said, im sure shep knows what he is doing with metal selection, i just wanted everyone to take a second thought about saying 'a stronger metal means stronger gears'
Thankfully we can always wait a bit and see how the DSM gears go :)
I have also broken gears in a 6 spd transfer case.
-Chris
Shep has been making DSM gears for years, google his business name, see for yourself.Quote:
Originally Posted by MR2
Actually his upgraded shafts have only been a welded stock gear onto his shaft...Only recently has he started actually making the gears, AND they break the same as welded ones.Quote:
Originally Posted by 2fnloud
If you look at a lot of the failures the edges of the teeth are broken off due to the gears being pushed away from each other. We fixed that problem with blown up DSM rear diffs by upgrading the covers to add in load bolts to keep them from flexing. Which a better cover is probably a better bet of keeping the TC from failing as well.
I was not aware that the new upgraded gears had actually been put to the test yet...
or that is what the emails I have from Shep seem to be saying
IF I read that right you are talking about rear diffs, how can this be applied to the T-case?Quote:
Originally Posted by MeTarzan
and if was thinking you where referring to gears for our car, what do you think his reply would be?Quote:
Originally Posted by MR2
I'm referring to the upgraded gears for the DSM's...
http://www.3sgto.org/f17/billet-gear...tml#post191501
Quote:
Hello,
No I do not have any threads or data that is publicly released as we are still in the testing phase with our latest gears.
OK cool, then we do have time.
:)
I suspect we just need some months for the Economy to clean up a little and the big guys will poke their heads out again!
My friend that I work for is very well known in the DSM community and I guess we could have a bit more information from the people that are running/testing the parts for Shep and hasn't made public since they are the ones that are putting our parts to the test as well.Quote:
Originally Posted by MR2
the external brace with an integrated cover as I posted in my prior post (#48) it will stiffen the house and should not allow the flex and separation of the gears.Quote:
Originally Posted by 2fnloud
I saw that, so what would that cost?
still havent gotten it set yetQuote:
Originally Posted by MeTarzan
At the ballpark that you are figuring, You have my attention.
Any news on these? I would be interested as well
You would make three, long ways to 15
I was more referring to the external brace that MeTarzan posted since those seemed like they were actually going to happen.
I sent him a PM about that just a few hours ago ;)
Quote:
Originally Posted by DK77
I never really got any definite interest in them but if people really want them we can make them.
Overkill or not...INTERESTED.
I even have a good T-case sitting that could be shipped to you if need be to develop the prototype
theres no issue if its overkill if someone will buy them....i mean the dsm one was made on recommendation of a trans builder with a mid 9 sec full weight 2 G eclipse and this season we will have them on a few other Fast dsm's.
i have the tcase already so development isnt a problem...just demand.... i guess i can start another thread to get actual interest on them and we could have the first one ready pretty quick (~2weeks)
before we hop onto the brace idea, do we have any proof that the stock case is flexing? anyone looked at the broken stock housings to see if there is any sign of this?
How about just based on the conversation I had with Ray, when I first started this thread? He suspects that there is just enough flex to pull the T-case gears far enough apart to cause the failure.
HE backed that up by explaining that in all the grenaded 6spd T-cases that he seen it is the main gears that have been stripped just about clear off. Manny even posted pics of his T-case main gear, and it's damage was exactly as Ray explained it.
Has anyone in the DSM family put one of these on with just stock T-case gears and beat on it? Would be curious to know if adding just the brace added to the longevity to the stock gears.
well that is exactly what the dsm tcases do as well and so far im pretty sure the only tcases that these are on are on stock gears.....im going to go ahead and pull my tcase and get this thing rolling
why don't you guys just get the midcase cast in steel then? toy-rific is stilling casting 5 speed cases.
What did the DSM brace and up costing, I remember you guestimated 600 earlier in this thread.Quote:
Originally Posted by MeTarzan
is the DSM brace pre-loaded? did the DSM guys go with a brace or a full replacement?
The DSM on is $450 and I'm guessing unless there is some major roadblocks then ours should fall in right around the same price.Quote:
Originally Posted by 2fnloud
The cover part is to exact dimensions of the stock cover only thicker so it is preloaded with shims the same way. We dont sell a full replacement just the Brace which replaces the cover and attaches via the mounting holes thru to the trans and then to the mid and tail housing to keep the tcase from flexingQuote:
Originally Posted by MR2
Right, this sounds like it'd be worth shipping a test unit to PG to play with :D
while I am cynical I would LOVE for it to be proven that it's just the case flexing
PG? And what does testing like this cost?Quote:
Originally Posted by MR2
in the 450 ballpark works for me.
This guy: My DR1400DBB daily driver build - 3000GT/Stealth International Message CenterQuote:
Originally Posted by 2fnloud
and considering how much it's costing him each time he pop's one, I'd say he'd be happy to pay whatever the normal price is for one
I agree that this is most likely a flex issue. It would be nice if some inspection could be done to the damaged units to see where the flex/failure is happening before creating a solution in the dark.
well like i said in my prior post we developed this in conjunction with a trans builder in the dsm community so we arent going at this blindly. We have inspected many gear sets and housings and most common thing is the teeth are stripped off the gears and the covers have fractured leading us to belive that the problem is the gear is separating. We only got the dsm one out just in time for it to be tested at the DSM Shootout but it will be on multiple 9 sec cars and at least one 8 second car this year. So that will be our major testing bed for the brace. There are other companies that make braces similar to the strap style of Nelson but people have still blown their tcase and actually tend to break them more often with said style of brace.Quote:
Originally Posted by CoopKill
so our solution was to replace the stock cover which is only about 1/4" thick with a piece that is 1" thick at the bearing and also supports the rest if the tcase from flexing/warpping from front to back
Right! lets have one whipped up tested :)
I was just informed of this thread. I am willing to try anything as there is no tested solution rite now. 6speed tcase is only good for 1.6 60ft. Any faster = broke.
how many have you broken?Quote:
Originally Posted by mannavr4