BMI's DB12R
#7156
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#7157
It seems to me the long alloy ball stud was replaced with a medium ball stud in the latest kit. At least in my DB12RR kit what I just bought 2 weeks ago there was a medium size in the kit.
In my first race last weekend I had two heavy crashes at fullspeed on the long mainstraight and there was absolutely nothing broken or twisted on the car beside one of the GRP wheels.
In my first race last weekend I had two heavy crashes at fullspeed on the long mainstraight and there was absolutely nothing broken or twisted on the car beside one of the GRP wheels.
#7158
Tech Rookie
Corally long ball stud
InspGadgt do you know the part number of the Corally long ball stud?
Thanks
Thanks
#7159
Tech Fanatic
iTrader: (2)
so a friend and I both run DB12RR's and have had the same failure of the front shock mount ball stud. When using the long alloy stud, we have found they tweak or snap in collisions. Now I know we shouldnt hit stuff... but it happens.
Both of us recently have fallen out of mains and qualifiers from failure of that front ball. Now we know this is a legacy associated bit from the 12L3 series of cars, so its not a BMI design failure. But I went and found a solid solution.
After seeing the new 12R5 center shock mount position and then looking at the 1/10th offerings out there, I picked up a Darkside Motorsports Adjustible center shock mount (#140). I rocks. In the same position as the AE mount it takes a lil more distance on the shock to give the same geometry, but overall its perfect. I used a small Ti ball stud in it and its rock solid. It has a pre threaded delrin base that fits fine.
Its probably a few gm's heavier than the AE setup, but I have no fear of busting those long ball studs anymore. And it complements the cars looks rather nicely.
I did also... somehow... bust the Silvia shock cap. I snapped the threaded portion right off. so I put an aluminum 4x40 scew through the hole with a small Oring on it, and a thin nut on the other side, and its good as new and longer which works for the darkside setup.
Both of us recently have fallen out of mains and qualifiers from failure of that front ball. Now we know this is a legacy associated bit from the 12L3 series of cars, so its not a BMI design failure. But I went and found a solid solution.
After seeing the new 12R5 center shock mount position and then looking at the 1/10th offerings out there, I picked up a Darkside Motorsports Adjustible center shock mount (#140). I rocks. In the same position as the AE mount it takes a lil more distance on the shock to give the same geometry, but overall its perfect. I used a small Ti ball stud in it and its rock solid. It has a pre threaded delrin base that fits fine.
Its probably a few gm's heavier than the AE setup, but I have no fear of busting those long ball studs anymore. And it complements the cars looks rather nicely.
I did also... somehow... bust the Silvia shock cap. I snapped the threaded portion right off. so I put an aluminum 4x40 scew through the hole with a small Oring on it, and a thin nut on the other side, and its good as new and longer which works for the darkside setup.
#7160
I have the older DB12. The problem I am having is upon acceleration it pulls to the left. I can't get it corrected. I am using the damper disk, and .20 springs. Bearings seems fine. Are there any obvious things to look for I am missing?
#7161
Hey,
check front tire diameter is the same both sided, also for rear. If the camber is different left to right the car will pull a bit to one side. Also check ride height left to right and make sure its the same. Also under low traction conditions if the diff is too tight the back end will lose traction and swing out.
Good luck
check front tire diameter is the same both sided, also for rear. If the camber is different left to right the car will pull a bit to one side. Also check ride height left to right and make sure its the same. Also under low traction conditions if the diff is too tight the back end will lose traction and swing out.
Good luck
Also make sure your axle is centered properly. It needs to be centered almost perfect. If you face the shorter boss on the clamping hub towards the bearing in the pod plate, you will need 3mm of shims per side and you will be at 172 mm and perfectly centered. This is with the offset of jaco and the new parma black wheel.
#7162
#7163
Tech Champion
hey clegg thats a sweet shock mount im gonna have to pick one of them up. the long irs ball stud always snaps and the corally is like 9 bucks and its metric so you need a different ball cup. thats why we run a medium height ball stud with 2mm spacers under the stock mount. same height as long ball stud without the snappage hey jason looks like you need to make an adjustable mount now buddy
I also saw guys use the older style AE/CRC mount, which is higer, with a shorter ball stud then use spacers underneath the shock mount to raise it.
#7164
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Join Date: Jan 2004
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hey clegg thats a sweet shock mount im gonna have to pick one of them up. the long irs ball stud always snaps and the corally is like 9 bucks and its metric so you need a different ball cup. thats why we run a medium height ball stud with 2mm spacers under the stock mount. same height as long ball stud without the snappage hey jason looks like you need to make an adjustable mount now buddy
and it just looks bad ass
#7165
Tech Champion
definitely a cool mount...I was looking at the aluminum one from CRC because it has a clamp for the roll over antenna but would have to space the heck out of it as it is super low.
#7166
Tech Elite
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Join Date: Jun 2008
Location: Conducting aggressive board meetings at my local track
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Anyhoo. Had another good night with the DB12RR. Unfortunately I had a bad solder connection do me in during the main. Here's a question for everyone. How often do you reapply lube to the kingpins and damper tubes? I do them once a week.
Jason,
Wanted you to know the pink tires in the rear are holding up great. No where close to the amount of tire wear I had with the yellow tires.
#7167
Tech Adept
Hi guis I just assembly my DB12RR and in the step5 I have stack because the upper suspension hinge pin it's very dificult to pass throu to the oter side of the reactive caster block.
Any ideas or tips?
Any ideas or tips?
#7169
Tech Adept
#7170
Tech Elite
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Jason YGPM.