Suzuki Quadracer HQ
Suzuki Quadracer HQ Discussion => Suzuki Quadracer HQ - General Discussion => Topic started by: All American on November 03, 2015, 03:37:35 am
-
Thank you guys. Those was good pics. Now I understand. What all in the motor can you have cryod' and what would you gain from it?
If you have parts that are NEW and have not experienced any usage or stress, that is the best time to finish the heat treating process with cryo treating. Cryo treatment is not magic, but a place where a lot of uninformed guys spend a lot of money for a process that is over rated for the kid of parts we use on the LT 250 and LT 500 Suzuki and the metal the Suzukis are made of. If you are building space shuttle parts or parts for formula one race cars where the ultimate strength and minimal weight are the prime objective then the cost of cryo treating can be justified.
Cryo treating is not going to add life to the corners or edges of the dogs or sockets that get rounded off due to mileage or abuse. Cryo treating is not going to add life to the surface of the gear teeth that ware due to mileage or lack of lubrication. If you have components that others have had a history of breaking due to being used for purposes that they were not designed for, then cryo treating might be used as a last resort to nudge the strength to a very slightly higher level. Cryo treating MIGHT add a little strength to the core of the gear and prevent a gear from splitting in half or a tooth on a gear from breaking off due to being overloaded.
I can think of many other area where my customers should first spend their money and do not recommend cryo treating their parts.
-
Thank you guys. Those was good pics. Now I understand. What all in the motor can you have cryod' and what would you gain from it?
-
.................... The cutting process does take away some of the hardened material but some guys do a cryo and a micro polish to regain some of the rockwell hardness on the dog face that is lost when cutting them ...
http://(http://i875.photobucket.com/albums/ab320/quadracer007/WCR%20Trans/CIMG7897.jpg) (http://s875.photobucket.com/user/quadracer007/media/WCR%20Trans/CIMG7897.jpg.html)
http://(http://i875.photobucket.com/albums/ab320/quadracer007/WCR%20Trans/CIMG7894.jpg) (http://s875.photobucket.com/user/quadracer007/media/WCR%20Trans/CIMG7894.jpg.html)
http://(http://i875.photobucket.com/albums/ab320/quadracer007/WCR%20Trans/CIMG7898.jpg) (http://s875.photobucket.com/user/quadracer007/media/WCR%20Trans/CIMG7898.jpg.html)
Cryo treating affects the core material of the gear. Cryo will not regain any of the case hardening that is lost when it is machined away during the back cutting process.
Carburizing (case hardening) is a process where the gear is in a carbon rich environment at a high temp (usually 1500 to 2000 deg F) for many hours. The length of time in the oven determines the depth of the case hardening.
Gears cannot be re-casehardened after they are back cut. Carbon infuses in the the surface of the gear as well as building up, changing the dimension of the gear. Compensation for the case hardening has to be made in the design and machining of the gear so that the gear will have the correct dimensions after case hardening.
-
It's actually front cutting the engaging faces of the dogs on the gear so they interlock with each other and stay engaged under load better.
Usually you wait until you start to have problems with your stock dogs slipping then you have them cut. The cutting process does take away some of the hardened material but some guys do a cryo and a micro polish to regain some of the rockwell hardness on the dog face that is lost when cutting them (this set was cryo'd and micro polished = AKA stuck in a barrel of vibrating material, walnut shell or something?) .
This one was done by Whittier Custom Racing (Greg) who I've heard is now out of business
http://(http://i875.photobucket.com/albums/ab320/quadracer007/WCR%20Trans/CIMG7897.jpg) (http://s875.photobucket.com/user/quadracer007/media/WCR%20Trans/CIMG7897.jpg.html)
http://(http://i875.photobucket.com/albums/ab320/quadracer007/WCR%20Trans/CIMG7894.jpg) (http://s875.photobucket.com/user/quadracer007/media/WCR%20Trans/CIMG7894.jpg.html)
http://(http://i875.photobucket.com/albums/ab320/quadracer007/WCR%20Trans/CIMG7898.jpg) (http://s875.photobucket.com/user/quadracer007/media/WCR%20Trans/CIMG7898.jpg.html)
-
What is back cutting a gear? What do you guys actually do to the gears? And why do you do it? <1> [|]