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Old 03-11-2014, 03:14 PM   #901
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Serpent Cobra GT did it again!!! Captured the 1st and 2nd place finish at the 2014 Airtronic Grand Prix in the great city of LA.



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Old 03-11-2014, 07:08 PM   #902
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Heck yeah buddy!!! Cobras looked really good! I hear that guy who took your top picture is pretty cool haha Cant wait for next time.
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Old 03-13-2014, 09:47 PM   #903
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Congratulations flyin Hawaiian


My Serpents are ready for first race at local track

I noticed when I tightened the bottom front diff case screws the diff was not free and would be getting stuck
Loosening the bottoms screws made it smoother
Rebuilt the front diff twice and was free but once tightened on chassis it would bind

Anyone know why this is happening?
Thanks
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Old 03-14-2014, 12:53 AM   #904
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Originally Posted by Flyin Hawaiian1 View Post
Serpent Cobra GT did it again!!! Captured the 1st and 2nd place finish at the 2014 Airtronic Grand Prix in the great city of LA.



Congrats Andy and Joaquin Sr....any video links ??
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Old 03-14-2014, 06:52 AM   #905
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Originally Posted by DRRC View Post
Congratulations flyin Hawaiian


My Serpents are ready for first race at local track

I noticed when I tightened the bottom front diff case screws the diff was not free and would be getting stuck
Loosening the bottoms screws made it smoother
Rebuilt the front diff twice and was free but once tightened on chassis it would bind

Anyone know why this is happening?
Thanks
Try to remove the shim(s) that go behind the 13-tooth pinion gear and see if that free up the bind...........
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Old 03-14-2014, 06:54 AM   #906
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Congrats Andy and Joaquin Sr....any video links ??
Here are couple of short video clips of my car and Joaquin's car:

https://www.youtube.com/watch?v=MPGwLgLlmJM

https://www.youtube.com/watch?v=vEsvyzQOjLM

https://www.youtube.com/watch?v=DUH6aW-eMnc
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Old 03-14-2014, 09:45 AM   #907
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Where you two running the same set-ups?
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Old 03-14-2014, 10:24 AM   #908
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Try to remove the shim(s) that go behind the 13-tooth pinion gear and see if that free up the bind...........
Hey Andy nice meeting you in LA! Thank you for coming and also to the GT guys..Hope you guys comeback again and race with us...A lot of Local Guys are asking about your set up..
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Old 03-14-2014, 10:33 AM   #909
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Hey Andy nice meeting you in LA! Thank you for coming and also to the GT guys..Hope you guys comeback again and race with us...A lot of Local Guys are asking about your set up..
Super secret!!! Sweep Racing Tires were the ticket, they worked way better with the track. The more you ran them they tackier they got. A Murnan Modified ISON GT helps a ton too, his infield was where he made the magic.

You can bet we will be back out, that was just too much fun!!! Great track great people and warm sunshine, count me in!
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Old 03-14-2014, 10:37 AM   #910
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Originally Posted by DRRC View Post
Congratulations flyin Hawaiian


My Serpents are ready for first race at local track

I noticed when I tightened the bottom front diff case screws the diff was not free and would be getting stuck
Loosening the bottoms screws made it smoother
Rebuilt the front diff twice and was free but once tightened on chassis it would bind

Anyone know why this is happening?
Thanks
Also you can loosen up the top shock mount screws a half turn or so depending on where you are getting the pinch. These cars take a little to wear in but once they do they are free and perfectly functioning race machines.
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Old 03-14-2014, 11:54 AM   #911
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Angry binding on drivetrain

Quote:
Originally Posted by DRRC View Post
Congratulations flyin Hawaiian


My Serpents are ready for first race at local track

I noticed when I tightened the bottom front diff case screws the diff was not free and would be getting stuck
Loosening the bottoms screws made it smoother
Rebuilt the front diff twice and was free but once tightened on chassis it would bind

Anyone know why this is happening?
Thanks
Hey DRRC......I would check to see if diff. gear is contacting chassis pan. I built a car with 'aftermarket' chassis pan that had that problem and found out the 'recess' in the chassis for the big diff, gear wasn't cut correctly. Found that by spinning wheels by hand at point where the gear just made contact, it made a small mark to indicate 'dremmel target'. (just to clarify, mine was a 'K' car........but the gremlin can be the same)
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Old 03-14-2014, 12:04 PM   #912
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Thanks for the info guys
I think all of the above
I overtightened the diff case at all screws so have to open up by 1/4 and removed one shim too
Still not smooth but with some running should get better
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Old 03-14-2014, 02:58 PM   #913
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Thanks for the links!!
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Old 03-15-2014, 07:56 PM   #914
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First time running the Cobra GT
What a beautiful car
Thank you Serpent
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Old 03-15-2014, 08:26 PM   #915
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First time running the Cobra GT
What a beautiful car
Thank you Serpent
Sounds like we had similar experiences! It only gets better with time. Let us know if you have any questions!
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