Ofna Ultra GTP2e

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Old 09-12-2011, 09:47 AM
  #1066  
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Originally Posted by rpompeu View Post
You won't need this, it doesn't come with a center diff, it has a spool;
Awesome! Thanks for the heads up.
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Old 09-13-2011, 11:09 AM
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Default Front Tire Wear

Trying out a new tire manufacture running 45 shore (front/rear). The rears look spotless but the fronts do not have an even wear pattern and the outside of the tire looks like I am overheating it.

Do I need more camber in the front end?

Softer spring (currently running yellow)?

Harder Front Tire 50 shore?
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Old 09-13-2011, 11:46 AM
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Getting warm yes, but that's when they get sticky. How's the traction?
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Old 09-13-2011, 01:29 PM
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Originally Posted by mtrsprt View Post
Getting warm yes, but that's when they get sticky. How's the traction?
The rears are hooked but the front end is pushing like a dump truck if I am on the throttle or off.

Normally for bashing I do not mind the car handling this way as it prevents roll overs and makes it very predictable for speed runs.
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Old 09-13-2011, 01:45 PM
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Originally Posted by Capt'N_Slow View Post
The rears are hooked but the front end is pushing like a dump truck if I am on the throttle or off.

Normally for bashing I do not mind the car handling this way as it prevents roll overs and makes it very predictable for speed runs.
SNR recommends black stock front springs and no swaybar
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Old 09-13-2011, 04:00 PM
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Originally Posted by Capt'N_Slow View Post
The rears are hooked but the front end is pushing like a dump truck if I am on the throttle or off.
Was the picture of the tire you posted from the front or rear? You might need a slightly softer spring in the front for weight transfer under braking.
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Old 09-15-2011, 02:34 PM
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Originally Posted by mtrsprt View Post
Was the picture of the tire you posted from the front or rear? You might need a slightly softer spring in the front for weight transfer under braking.
Front Tire.

Found the front spring had collapsed by 4mm compared to a new in package one. The front ride height was less than 7mm which would transfer the majority of the weight permanently to the back tires.

I didn't have another yellow to put back in so I went with a new white spring. Increased the front droop by .5mm, and softened the front sway bar.

Will give it a test and see if the front end slides as much and how the tires wear.

Last edited by Capt'N_Slow; 09-16-2011 at 06:40 AM.
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Old 09-18-2011, 06:32 PM
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HERES A NEW VIDEO
some new sweep 55 shore slicks bashing !
THANKS igt hobbies !!

http://www.youtube.com/watch?v=ozlkYRLgz5A
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Old 09-19-2011, 07:55 AM
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Originally Posted by bronc4now View Post
HERES A NEW VIDEO
some new sweep 55 shore slicks bashing !
THANKS igt hobbies !!

http://www.youtube.com/watch?v=ozlkYRLgz5A

No Problem, Thanks.

Those tire marks on the pavement are bad ass!
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Old 09-19-2011, 08:11 AM
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Default Need another GTP2

Hit something square and concrete at 85mph. I have never seen a 6S lipo accordion before or a drive shaft bent this badly .

My need for speed has died down a bit. Will have to pick through the carcass to find anything not broken.
Attached Thumbnails Ofna Ultra GTP2e-side-profile.jpg   Ofna Ultra GTP2e-screen-shot-2011-09-19-8.52.04-pm.jpg  

Last edited by Capt'N_Slow; 09-19-2011 at 07:59 PM.
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Old 09-19-2011, 10:38 AM
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Originally Posted by Capt'N_Slow View Post
Hit something square and concrete at 85mph. I have never seen a 6S lipo accordion before .

Don't have a need for speed so much anymore.
That's going to leave a mark.....

I have assigned speed runs to better and better locations over time. A 9lb object @ 85mph needs a ton of width length to be safe from objects that just JUMP out at you! lol
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Old 09-19-2011, 08:15 PM
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Default Force

Weight of car = 7 lb = 31.1281 N

Mass = W / g = 7 lb / 32 ft/s^2 = 0.21875 slugs

Velocity = 85 mi/hr = 124.67 feet per second

Initial Kenetic Energy

Kenetic Energy = 1/2 ( 0.21875 slugs ) ( 124.67 ft/s )^2

KE = 1699.9728 ft lb

Stopping Distance = 8 inches

Work Required to stop the car:

Favg (d) = -1/2mv^2

Favg = 1.268875 tons (2537.75 lbs)

My 7 lbs car became 2537.75 lbs when it hit concrete? Is this right?

Last edited by Capt'N_Slow; 09-21-2011 at 10:28 AM.
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Old 09-19-2011, 11:12 PM
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Thumbs up Transformers...

+ YouTube Video
ERROR: If you can see this, then YouTube is down or you don't have Flash installed.




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Old 09-20-2011, 11:44 AM
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Originally Posted by MambaPower87 View Post
+ YouTube Video
ERROR: If you can see this, then YouTube is down or you don't have Flash installed.




I take it that you are a Transformer fan.

ME TOO.
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Old 09-20-2011, 11:50 AM
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Hey Transformers!!! Great looking lid. I recommend you apply a little shoe goo under the leading edge of your front end of your lid. It will make it last a little longer. Just my. 02.
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