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Old 01-16-2006, 04:49 AM   #151
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Originally Posted by Francis M.
Although this car has less adjustments than the RRR. It seems to be more in the ball park set up wise when i go from track to track. the main difference i use from stock is i use hong nor spring wich is the same as associated springs. I always start with yellow front and red rear or copper rear and just mess around with the droop. I haven't done anything to the bulk head. another thing I changed on the car is I used mugen aluminum hexes that locks and tamiya shims same size as the 10x15 bearing behind the hubs to get rid of side play. As for saving money this car has saved me a lot of money since making the switch. I really liked the RRR but could not afford to replace the pinions along with the out drives every two meets.
Francis M:

Thank you for your prompt response. I bought my RRR second hand off a friend and as yet have not raced it, i have just been practicing for the start of the season. I fully agree with you about the pinions & the rear diff outdrives...

My biggest fear with the GPX4 is parts availabilty, i usually shop online in HK, but no body seems to have Hobao parts from what i can see. If i order from the US i will have to pay duty when it gets into the country

H_O
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Old 01-16-2006, 08:59 AM   #152
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Here's a HK sites that carries a full line of parts including the hop up parts.

http://www.rc-union.com/index.php?cPath=35_77_339
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Old 01-16-2006, 07:17 PM   #153
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Default Spare Part

The car look like a beef up MTX3. I would really like to try it , but get spare part seem like it going to be hard. The other day I was trying to order the pro kit and spare part and the front belt was out at rc union. The car need more place to carry their parts.
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Old 01-16-2006, 10:58 PM   #154
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Quote:
Originally Posted by Quietroit
The car look like a beef up MTX3. I would really like to try it , but get spare part seem like it going to be hard. The other day I was trying to order the pro kit and spare part and the front belt was out at rc union. The car need more place to carry their parts.
Nitrohouse has all the spares. Give them a call at 800 928 0304.
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Old 01-17-2006, 02:53 AM   #155
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Quote:
Originally Posted by three50zx
Here's a HK sites that carries a full line of parts including the hop up parts.

http://www.rc-union.com/index.php?cPath=35_77_339
three50zx:

Thank you... the is very tempting i just need to sort ot my finances

H_O
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Old 01-17-2006, 04:02 AM   #156
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Quote:
Originally Posted by hooked_on
three50zx:

Thank you... the is very tempting i just need to sort ot my finances

H_O
hi! you could also try www.rcmart.com
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Old 01-18-2006, 01:21 PM   #157
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Thumbs up

Hi there all you gpx 4 pro fans.
Does any one have a set-up that has worked them.
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Old 01-18-2006, 07:01 PM   #158
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The book setup is good for starters. I run camber 3 and toe 3 in the rear and book setting for the front. This car drives very well.
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Old 01-18-2006, 07:49 PM   #159
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Default battery

What battery do the car hold.
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Old 01-18-2006, 08:05 PM   #160
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2/3A 5 cell 6v flat pack.
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Old 01-19-2006, 04:00 PM   #161
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Thumbs up GPX4 PRO

OK im from townsville in north queensland australia and my old man has the only gpx4 pro racing in our club and from what i can see is that is a brilliant car it handels just as well as the mugen mtx3 pro spec and down the straight is s just as good as well this is his first year racing for 12 years and won the nitro class he runs a os enginge. i work in the local toy store up here and im in the hobbie section the gp4 pro is just as good as a mugen and i am investing in 1 this week end they are a brillant car and there should be more of them i will be running a os tz 12
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Old 01-19-2006, 04:19 PM   #162
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Thumbs up 1 more thing

the only problem we have had with the gpx4 pro is doing the reag bellts all the time but that is easly fixed buy using a v-one rr rear belt they are exactly the same but the v-one rr belt is witer and tougher for the rockes to get in to and the other thing we do to stop rocks from doing rear belts is buy putting 100mph tape over the rear hole where the belt is since doing this we have not done 1 rear belt
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Old 01-20-2006, 12:29 PM   #163
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Quote:
Originally Posted by Alfa Sprout
the only problem we have had with the gpx4 pro is doing the reag bellts all the time but that is easly fixed buy using a v-one rr rear belt they are exactly the same but the v-one rr belt is witer and tougher for the rockes to get in to and the other thing we do to stop rocks from doing rear belts is buy putting 100mph tape over the rear hole where the belt is since doing this we have not done 1 rear belt
how did you solve the problem with the front and rear belts being sooooo tight
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Old 01-20-2006, 12:48 PM   #164
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You can put 1mm shims in the rear section of the mid block so that the mid is slightly tilted forward and this should loosen the front belt just a little. The rear is not as tight as the front and the belt should break in just right after 20 - 30 min. of running it in.
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Old 01-20-2006, 12:54 PM   #165
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Default Spring Sets

Do Associated spring work fine with the car or what springs should I use for the gpx4 pro.
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