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Old 07-08-2015, 05:44 PM   #796
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Car arrived today any build tips or do we already have them in the thread?

Rod
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Old 07-09-2015, 12:27 AM   #797
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not sure if the front Aluminium Bulkhead is the same for rear XI Sport ?
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Old 07-09-2015, 02:45 AM   #798
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Rod: they are the same. The original Xi had a different rear bulkhead. But the sport uses the same front to back. So if you would like to bling it up, just buy a pair of front aluminum bulkheads.
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Old 07-09-2015, 06:12 AM   #799
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do you use the same setup as zero?
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Old 07-11-2015, 04:40 PM   #800
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Default Drive shaft

Hello,

I managed to tear up my drive shafts today. Is there any advantages to using the double jointed shafts? I bought the car used and it had the double joint shafts already installed, just wanted to know if it is worth the extra cash compared to the typical universal shafts. If it is an advantage to have the double joint has anyone rebuilt one before with success? I see the parts are on tqracing.

Thanks,
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Old 07-12-2015, 02:40 PM   #801
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any one here uses the xi sport for wcics? besides Chuck
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Old 07-14-2015, 12:57 AM   #802
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Ive tebuilt them but they are on ebay cheep enough in pairs so i just buy the hole thing now. You get front end chattering with standard one so thats why i changes to double joint one's.
Hope that helps
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Old 07-14-2015, 07:15 PM   #803
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Default Gearing help

Hello,
I am heading to a big race this weekend and I am really unsure of my gearing. I have attached a video of the track. Any info is greatly appreciated.

https://youtu.be/MdOia-Z9SMs

Thanks,
matt
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Old 07-15-2015, 04:55 AM   #804
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I ran 3.47 with 17.5 Reedy mach II at a medium sized nitro track (160 ft straight) last month.
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Old 07-17-2015, 07:47 AM   #805
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Any tips for improving speed? I recently bought a second hand Sakura that had run mod a few times. I want to run it in stock 21.5. I bought a Speed Passion Reventon with a sp 21.5 3.0 motor but my car is seriously lacking speed. The last race I was well off the leaders and was getting blown away on the straights. I was running a FDR of 3.5. I changed the gearing to a 66 spur and a 36 pinion but still no poke, I then tried a big 44 pinion and it gave it better top speed but it lost a lot of torque. Really stumped on how to improve it. Is my motor defective? I thought stock motors had to be similar power? The fast guys seem to be another class=(
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Old 07-17-2015, 08:22 AM   #806
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Quote:
Originally Posted by RKeasler View Post
Car arrived today any build tips or do we already have them in the thread?

Rod
http://www.petitrc.com/reglages/3rac...port_Assembly/
http://os.3racing.hk/articles.php?articles_key=133
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Old 07-17-2015, 09:27 PM   #807
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Thanks for the help!!!!
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Old 07-18-2015, 08:16 PM   #808
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Mobile 1 synthetic grease for the diff built, good idea ? Tube should last forever if it is good for this.
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Old 07-19-2015, 09:14 AM   #809
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Quote:
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Mobile 1 synthetic grease for the diff built, good idea ? Tube should last forever if it is good for this.


How thin is it compared too the kit supplied 3000 cst?

I preffer to use the rc stuff, simply for pairity. If i miss-place my 3000, i know that associated or xray 3000 is similar.

If you happen to lose your tube of mobile1, and you need to rebuild your diff to similar properties, what has the equivalent thickness?
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Old 07-19-2015, 09:16 AM   #810
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Quote:
Originally Posted by WallRocket View Post
Any tips for improving speed? I recently bought a second hand Sakura that had run mod a few times. I want to run it in stock 21.5. I bought a Speed Passion Reventon with a sp 21.5 3.0 motor but my car is seriously lacking speed. The last race I was well off the leaders and was getting blown away on the straights. I was running a FDR of 3.5. I changed the gearing to a 66 spur and a 36 pinion but still no poke, I then tried a big 44 pinion and it gave it better top speed but it lost a lot of torque. Really stumped on how to improve it. Is my motor defective? I thought stock motors had to be similar power? The fast guys seem to be another class=(

Is your timing correct? Also, are you using the same tiress as the other guys? I noticed that Sweeps give me a different rollout than Sorex.
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