Hobao GPX4 Pro
05-11-2008, 10:48 PM
#721
Tech Regular
The GPX-4 is a great handling car. But concentrate on loosening up the drivetrain.
05-27-2008, 07:44 PM
#723
07-04-2008, 06:07 AM
#724
Any news on the new car??...............
07-04-2008, 07:41 AM
#725
Heard that it is still a while away.
07-09-2008, 08:19 AM
#726
Slick Track Diff Oils for GPX 4 RTR
I just got this car RTR version and am setrting it up for a medium slick parking lot 75 x 100 with 85 ft straight and tight turns. I have 4 gear diffs in both ends and a couple of questions. Yellow springs front and blue in rear.
Common sense says start with 3,000 in both but after reading some of this post, i'm questioning that decision.
On my CD3, I'm running 3,000 rr & 10,000 frt with 40 wt and yellow springs all around. Power is a Jammin .12 on foams. (38 frt & 45 rr)
1. What weight shock oil is a start point for this condition of track?
2. What Diff oils are reccemmended for frt and rear?
3. Any reccommended starting points on foam tires Track temps are between 85 and 145 F?
Later
Phil
Common sense says start with 3,000 in both but after reading some of this post, i'm questioning that decision.
On my CD3, I'm running 3,000 rr & 10,000 frt with 40 wt and yellow springs all around. Power is a Jammin .12 on foams. (38 frt & 45 rr)
1. What weight shock oil is a start point for this condition of track?
2. What Diff oils are reccemmended for frt and rear?
3. Any reccommended starting points on foam tires Track temps are between 85 and 145 F?
Later
Phil
07-09-2008, 01:18 PM
#727
Hi,
I run this car in RTR (pullstart class) in Oz and I run:
Shocks: 40wt oil in shocks all round
Diffs: 0K rear diff/100K front (acts similar to a spool)
Springs: Hobao/Ofna yellow front/Mugen purple rear
Tires Jaco (Nitro shoes) 38 front/Jaco (Nitro shoes) 40 rears (I true the front tires 2mm smaller than the rears when new as the rears wear much quicker)
Most of the time setup is trial and error and by feel.
I run this car in RTR (pullstart class) in Oz and I run:
Shocks: 40wt oil in shocks all round
Diffs: 0K rear diff/100K front (acts similar to a spool)
Springs: Hobao/Ofna yellow front/Mugen purple rear
Tires Jaco (Nitro shoes) 38 front/Jaco (Nitro shoes) 40 rears (I true the front tires 2mm smaller than the rears when new as the rears wear much quicker)
Most of the time setup is trial and error and by feel.
07-09-2008, 01:44 PM
#728
Hi,
I run this car in RTR (pullstart class) in Oz and I run:
Shocks: 40wt oil in shocks all round
Diffs: 0K rear diff/100K front (acts similar to a spool)
Springs: Hobao/Ofna yellow front/Mugen purple rear
Tires Jaco (Nitro shoes) 38 front/Jaco (Nitro shoes) 40 rears (I true the front tires 2mm smaller than the rears when new as the rears wear much quicker)
Most of the time setup is trial and error and by feel.
I run this car in RTR (pullstart class) in Oz and I run:
Shocks: 40wt oil in shocks all round
Diffs: 0K rear diff/100K front (acts similar to a spool)
Springs: Hobao/Ofna yellow front/Mugen purple rear
Tires Jaco (Nitro shoes) 38 front/Jaco (Nitro shoes) 40 rears (I true the front tires 2mm smaller than the rears when new as the rears wear much quicker)
Most of the time setup is trial and error and by feel.
07-09-2008, 02:24 PM
#729
What size do you need to drill the hole to? Is there different pistons we can purchase?
Phil
Phil
07-09-2008, 02:44 PM
#730
If you back track this thread, the best information on the car came from a guy from France. He has 2 1.2mm holes in each piston. You enlarge the .8mm hole to 1.2mm and then drill another 1.2mm hole. I have not found any aftermarket pistons.
07-10-2008, 04:44 AM
#731
07-10-2008, 05:05 AM
#732
Hi,
I run this car in RTR (pullstart class) in Oz and I run:
Shocks: 40wt oil in shocks all round
Diffs: 0K rear diff/100K front (acts similar to a spool)
Springs: Hobao/Ofna yellow front/Mugen purple rear
Tires Jaco (Nitro shoes) 38 front/Jaco (Nitro shoes) 40 rears (I true the front tires 2mm smaller than the rears when new as the rears wear much quicker)
Most of the time setup is trial and error and by feel.
I run this car in RTR (pullstart class) in Oz and I run:
Shocks: 40wt oil in shocks all round
Diffs: 0K rear diff/100K front (acts similar to a spool)
Springs: Hobao/Ofna yellow front/Mugen purple rear
Tires Jaco (Nitro shoes) 38 front/Jaco (Nitro shoes) 40 rears (I true the front tires 2mm smaller than the rears when new as the rears wear much quicker)
Most of the time setup is trial and error and by feel.
07-10-2008, 09:59 AM
#733
Not sure what I have got I have not had it on the setup station for a while I just adjusted to get even tire wear like you said. I am also looking at testing some Kyosho rear uprights/hubs so I will let you know how that goes.......
07-10-2008, 10:59 AM
#734
THX, I will be waiting to hear how that goes.
07-28-2008, 08:56 AM
#735
Pro
Hi,
I am looking at putting my GPX-4 Pro chassis back together for a run so see how it goes. Don't know what engine to run may source a Murnan to try in it.........
I am looking at putting my GPX-4 Pro chassis back together for a run so see how it goes. Don't know what engine to run may source a Murnan to try in it.........