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Old 05-20-2015, 01:09 PM
  #5761  
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Originally Posted by 2uzferunner03
I asked pretty much the same question a few pages ago and never got an answer. Hopefully someone can chime in to help. The bd7 forum is strange. You can ask a setup question or chassis question and get no answers but an oring question will get pages of response. Go figure.
did it myself



in red 2014,in black 2015.

so bulkhead holes have different spacing.
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Old 05-20-2015, 01:39 PM
  #5762  
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Nice. Thanks
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Old 05-21-2015, 07:47 PM
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Hi all, just about to begin my 2015 build. Any tips on building it? Currently I have:

Shocks: Black bladders (YS-8HD), 2 x blue o-rings (YS-7HG) with thin collar (BD-S2W)
Diff: As kit build specs but soaking o-rings in shock oil for a few hours first. Also sand gears down using 300 grit sandpaper

Is this correct? Much appreciated for any response.
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Old 05-22-2015, 05:47 AM
  #5764  
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Originally Posted by Zhangesh
Hi all, just about to begin my 2015 build. Any tips on building it? Currently I have:

Shocks: Black bladders (YS-8HD), 2 x blue o-rings (YS-7HG) with thin collar (BD-S2W)
Diff: As kit build specs but soaking o-rings in shock oil for a few hours first. Also sand gears down using 300 grit sandpaper

Is this correct? Much appreciated for any response.
Well if you haven't done so already, pick up front DCJ's and a decent servo mount. Stock turnbuckles aren't the best either...
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Old 05-22-2015, 06:14 AM
  #5765  
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Originally Posted by 2uzferunner03
I asked pretty much the same question a few pages ago and never got an answer. Hopefully someone can chime in to help. The bd7 forum is strange. You can ask a setup question or chassis question and get no answers but an oring question will get pages of response. Go figure.
It's not strange, sometimes a questions is ask over and over again and quick search may be the remedy.

The SSS and SLF question.

The SSS shock shaft is for the older 2013 BD7 and below and I believe is similar to the BD5 also. It is a different shock assembly compared to the SLF

The SLF is a hard anodized aluminum body that came with the 2014-2015. There may be a slight increase in volume, I don't remember. I never tried or care to swap parts between the old and new shocks. Two versions of this the standard and short and both can be used with standard touring car springs.
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Old 05-22-2015, 07:01 AM
  #5766  
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I read every page of this forum and exhausted Google search before asking about the chassis.

I have the blue 14 that came with blue alloy parts on the shocks. Does that mean their the sss shocks? Only reason I even care is because I want to get the tini shock shafts for them.
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Old 05-22-2015, 07:59 AM
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Originally Posted by 2uzferunner03
I read every page of this forum and exhausted Google search before asking about the chassis.

I have the blue 14 that came with blue alloy parts on the shocks. Does that mean their the sss shocks? Only reason I even care is because I want to get the tini shock shafts for them.
You have the non SLF shocks, they do make the titanium nitride coated shaft for those also, same ones thats always used on the BD5.

YS-53S-4T is the part number.
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Old 05-22-2015, 08:05 AM
  #5768  
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Originally Posted by Zhangesh
Hi all, just about to begin my 2015 build. Any tips on building it? Currently I have:

Shocks: Black bladders (YS-8HD), 2 x blue o-rings (YS-7HG) with thin collar (BD-S2W)
Diff: As kit build specs but soaking o-rings in shock oil for a few hours first. Also sand gears down using 300 grit sandpaper

Is this correct? Much appreciated for any response.
If you have experience building onroad cars it's fairly easy. Everyone has their own way of doing things. One of the most important things is to make sure everything moves freely...suspensions arms, spool, diff, turnbuckles etc. I usually have to had shims on the bearings at the front spool to take away some free play. Me personally I don't bother soaking the orings and sanding diffs. I don't have issues with leak diffs because I use yokomo sealing grease on the gasket area and dow 55 on the orings. Since we're discussing shocks, just make sure they're symmetric from left to right.
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Old 05-22-2015, 09:07 AM
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Originally Posted by Zhangesh
Hi all, just about to begin my 2015 build. Any tips on building it? Currently I have:

Shocks: Black bladders (YS-8HD), 2 x blue o-rings (YS-7HG) with thin collar (BD-S2W)
Diff: As kit build specs but soaking o-rings in shock oil for a few hours first. Also sand gears down using 300 grit sandpaper

Is this correct? Much appreciated for any response.
The gear diff bearings fit very tightly on the housing. Before you build the diff, you may want to wrap some 600 or so sandpaper around the bearing seat to twist and sand it down a bit. That should prevent any possible binding. Just keep checking and make sure you don't sand it down too much.
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Old 05-22-2015, 09:38 AM
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Originally Posted by 32819toon
I bought the RS version of the BD7. I found there to be a 2mm gap at the front left suspension mount. It looks like the FF mount is slightly bent, causing a gap and therefore play on the suspension arm. Has anyone else come across this problem ?
Anyone had this problem ? Anyone have the RS ?
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Old 05-22-2015, 09:58 AM
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Originally Posted by 32819toon
Anyone had this problem ? Anyone have the RS ?

I don't have the rs but I would think if the ff mount is bent it would be impossible to bolt upto the chassis.
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Old 05-22-2015, 03:49 PM
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Originally Posted by 2uzferunner03
I don't have the rs but I would think if the ff mount is bent it would be impossible to bolt upto the chassis.
The screws go in to the front and rear mounts, but on the left side there is about 2mm movement of the arm on the pivot pin. When you look at the pattern on the carbon fibre chassis, you can see that the mounts aren't straight.
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Old 05-22-2015, 04:26 PM
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Thanks for the tips, I have dcj's, ti turnbuckles and the floating servo mount. Just completed the build though and I noticed the rear diff feels much heavier compared to other diffs. I have 3000 oil in there and it feels like a 5000?? I replaced kit red o-rings with Kyosho ORG05 and removed the smaller outer o-rings.

Also, how to people build the shocks to be zero rebound? I tried a number of different techniques that I used to do on my xray shocks but I still seem to have 10-20% rebound and there is also a tin bit of negative rebound when the shaft is fully extended.

Last edited by Zhangesh; 05-22-2015 at 04:37 PM.
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Old 05-22-2015, 09:09 PM
  #5774  
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Did you sand the dimples off the back of the diff gears as well. Might be a little tight to start with but will free up
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Old 05-23-2015, 12:02 AM
  #5775  
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Originally Posted by evochick
Did you sand the dimples off the back of the diff gears as well. Might be a little tight to start with but will free up
Yeah sanded all the gears down, I think it may be the o-rings, they're a bit tight on the outdrives. First race day tomorrow, i'll see if it breaks in
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