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Old 04-27-2014, 03:45 PM   #4006
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I never run less than -1 deg of front camber
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Old 04-27-2014, 10:06 PM   #4007
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I never run less than -1 deg of front camber
I run it to get rid of rills in the front tire.
It worked pretty good in the other layout of the track.
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Old 04-27-2014, 11:46 PM   #4008
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Wow thank you for so many tips. I noticed all and will try them in the next week.

My front arm is with 1.5 and 1mm really smooth.
There is only room for 1mm shims total in the front wheelbase, so you can either have 1mm in front, 1mm behind or 0.5 each side (kit)
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Old 04-28-2014, 07:26 AM   #4009
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what are guys doing to compensate for the brittle front c-hubs and steering knuckles.
I seem to break these very easily in any wall clip or minor crash....

thx!
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Old 04-28-2014, 08:19 AM   #4010
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what are guys doing to compensate for the brittle front c-hubs and steering knuckles.
I seem to break these very easily in any wall clip or minor crash....

thx!
Plastic Chubs
Hard Knuckles

Trimming extra axle length helps if your're in the walls often

I've only cracked one chub in a year sor far, and it wasn't a "minor crash"
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Old 04-28-2014, 09:05 AM   #4011
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Plastic Chubs
Hard Knuckles

Trimming extra axle length helps if your're in the walls often

I've only cracked one chub in a year sor far, and it wasn't a "minor crash"
awesome thx!
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Old 04-28-2014, 11:01 AM   #4012
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Originally Posted by 5tylez View Post
what are guys doing to compensate for the brittle front c-hubs and steering knuckles.
I seem to break these very easily in any wall clip or minor crash....

thx!
For the first few weeks of ownership I was breaking 2 or 3 c-hubs a day. 3 weeks ago I finally trimmed off the front axle ends so that they flush with the wheel nut. Since then, I haven't broken a single c-hub on either of my BD7s. I also use the Xray T3 hard bumper (XRA301223 ).
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Old 04-28-2014, 07:33 PM   #4013
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If you run the Yokomo double jointed front axles, they are already trimmed for you. At least the new style ones are. I don't think I've broken a chub since I made the switch. As others have stated, I used to break chubs when I ran the Spec R axles because they stuck out and would randomly catch a pvc pipe joint.

I also boiled my chubs. Not sure if that helped with durability or not.
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Old 04-28-2014, 11:49 PM   #4014
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Originally Posted by CraigM View Post
There is only room for 1mm shims total in the front wheelbase, so you can either have 1mm in front, 1mm behind or 0.5 each side (kit)
Sorry you are right. It is 0.5 in the front and 0.7 in the back.
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Old 04-30-2014, 12:27 PM   #4015
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Today I tried a lot of your tips and it worked great.

I changed the shock positions to 3 at front and 4 at rear. Also used pink springs in the front. Car felt really good and the lap time dropped 2 tenth to 10.2.

It is still 1-2 tenth slower than the fastest guy but much better than before.
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Old 04-30-2014, 01:52 PM   #4016
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Originally Posted by Colbynobo View Post
For the first few weeks of ownership I was breaking 2 or 3 c-hubs a day. 3 weeks ago I finally trimmed off the front axle ends so that they flush with the wheel nut. Since then, I haven't broken a single c-hub on either of my BD7s. I also use the Xray T3 hard bumper (XRA301223 ).

Here is what I'm working on for front durability.
Left side: xray arm, xray c-hub, xray lower collar and screw, yokomo top collar, yokomo CVD and steering knuckle. As you can see, geometry is very similar.

Right side: all yokomo.



Here is the full transplant.

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Old 04-30-2014, 02:03 PM   #4017
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I put X ray knuckles on and have had zero issues with breakage. They are a direct bolt on. I broke a lot of knuckles and c-hubs when running anything over 1 mm of bump steer shims.

It seems to put a lot of tension on the knuckles and breaks them. When I ran 2mm shims I was eating them up.

I race on a track with boards for barriers and my car is just as durable as the rest, and I am running mod with a heavy trigger finger lol.
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Old 04-30-2014, 02:14 PM   #4018
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Quote:
Originally Posted by 5tylez View Post
Here is what I'm working on for front durability.
Left side: xray arm, xray c-hub, xray lower collar and screw, yokomo top collar, yokomo CVD and steering knuckle. As you can see, geometry is very similar.

Right side: all yokomo.



Here is the full transplant.

I don't want to be mean, but i see a few things that are not at the right places, and you're basically setting yourself up for other problems. The turning point of the hub of the steering looks different, as well as the location of the lower shock point. If you wanted x-ray arms, why not sell the Yokomo and get the Xray.

Not to be mean - IMHO - switch back to Yokomo parts, trim the axles like everyone posted, make sure the bumper is protecting the front of the car, and you'll see it will not break.
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Old 04-30-2014, 02:36 PM   #4019
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Originally Posted by Cadman1981 View Post
I don't want to be mean, but i see a few things that are not at the right places, and you're basically setting yourself up for other problems. The turning point of the hub of the steering looks different, as well as the location of the lower shock point. If you wanted x-ray arms, why not sell the Yokomo and get the Xray.

Not to be mean - IMHO - switch back to Yokomo parts, trim the axles like everyone posted, make sure the bumper is protecting the front of the car, and you'll see it will not break.
Maybe so, but I'm gonna give it shot and decide for myself.
Id rather experiment than DNF.

Not to be mean either but why did you sell your BD7?

Last edited by 5tylez; 04-30-2014 at 04:20 PM.
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Old 04-30-2014, 04:44 PM   #4020
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For what it is worth I have a 2014 blue with all graphite parts except the C hubs. I have found the car to be very strong. I have broken 1 rear upright when being hit by another car. My car was on its lid on the straight and was cleaned up by another car at high speed.

I would be interested to hear why the bump steer shims cause the knuckles to break.

Where are they breaking? 2mm is a lot of shim for bump steer and the ball studs are not a excessively long, did you use a longer ball stud so there is enough thread screwed into the knuckle.

Last edited by frozenpod; 04-30-2014 at 04:57 PM.
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