2LikesTekno RC EB48 Thread
05-10-2013 | 07:49 AM
#6316
Tech Master
Joined: Oct 2011
Posts: 1,025
From: The 561
Had the same problem, used a different screw and thread lock.
05-10-2013 | 08:00 AM
#6317
Just going to post this on next page so it hopefully will answer some questions
This page is full of conflicting piston info . lol
What is the O.D. of the pistons ?
So I did some math ..
1.2 x 8 hole =9.03mm³
1.1x 10 hole =9.49mm³
1.3 x 8 holes =10.61mm³
1.2 x 10 holes =11.30mm³
The formula is πr² (3.14 x [1/2 of hole x 1/2 of hole ]x # of holes
1.2 mm with 10 holes ::
3.14 x [ .6 x .6] x 10 holes =
3.14 x .36 x 10=
3.14 x .36 x 10 = 11.30
Hope this helps
This will only apply to strait hole pistons
The angles hole pistons when moving slow will act just like (or close enough) to a strait drilled piston but wonce speed of compression increases it will block some of the hole , kind of like crimping a water hose .
Hope it helps
What is the O.D. of the pistons ?
So I did some math ..
1.2 x 8 hole =9.03mm³
1.1x 10 hole =9.49mm³
1.3 x 8 holes =10.61mm³
1.2 x 10 holes =11.30mm³
The formula is πr² (3.14 x [1/2 of hole x 1/2 of hole ]x # of holes
1.2 mm with 10 holes ::
3.14 x [ .6 x .6] x 10 holes =
3.14 x .36 x 10=
3.14 x .36 x 10 = 11.30
Hope this helps
This will only apply to strait hole pistons
The angles hole pistons when moving slow will act just like (or close enough) to a strait drilled piston but wonce speed of compression increases it will block some of the hole , kind of like crimping a water hose .
Hope it helps
05-10-2013 | 08:45 AM
#6319
Tech Adept
Joined: Apr 2009
Posts: 104
From: Joliet IL
Servo dimensions also vary like beaven said. The horn in post #6306 also looks like a nice low profile option.
05-10-2013 | 09:03 AM
#6321
My plan when I get my horn in is to run a button head down from the top with a nut on the bottom (hopefully it will fit). Then I will probably shoe goo a piece of scrap lexan to the body in the location where it might rub to hopefully preserve my paint job.
05-10-2013 | 09:13 AM
#6322
The original 10x1.1s had too much low speed dampening, so Tekno advised to drill them to 1.2. Those had too little pack, so people started trying 8x1.3. That seems to be the sweet spot for this car.
05-10-2013 | 09:17 AM
#6323
wonder how the 10 holes would feel with 5 1.1s and 5 1.2s similar to the pistons that Avid offers in this configuration ...
05-10-2013 | 09:34 AM
#6324
05-10-2013 | 09:40 AM
#6326
All you have taken into account is hole area. Smaller holes will pack up sooner than larger holes. The 8x1.3s are a little more plush and give better traction over rough rough surfaces, but still give you decent pack. The 10x1.1 or 5x1.1+5x1.2 will pack up sooner and may bounce over rough surfaces.
05-10-2013 | 10:13 AM
#6327
To add to all of the discussion and throw another HUGE variable into the mix - the height of the holes (thickness of the piston) will have drastic affects on damping characteristics. Unless the pistons are identical in thickness, they can't be directly compared. For example, thicker pistons need larger holes for the same effective damping with the same weight oil. The jury is still out as far as whether a thinner or thicker piston is better.
Carry on...
Carry on...
05-10-2013 | 10:13 AM
#6328
All you have taken into account is hole area. Smaller holes will pack up sooner than larger holes. The 8x1.3s are a little more plush and give better traction over rough rough surfaces, but still give you decent pack. The 10x1.1 or 5x1.1+5x1.2 will pack up sooner and may bounce over rough surfaces.
05-10-2013 | 10:14 AM
#6329
wouldn't the 10 1.1 with 50wt vs 8 1.3 with 40 wt be pretty much the same? I need lots of pack for large flat landing jumps but its bumpy to. What would be my best bet? Im running front 50wt yellow 10 1.1 rear 45wt orange 10 1.1 The pack feels really good but little to bouncy in bumpy section.
05-10-2013 | 10:17 AM
#6330
wouldn't the 10 1.1 with 50wt vs 8 1.3 with 40 wt be pretty much the same? I need lots of pack for large flat landing jumps but its bumpy to. What would be my best bet? Im running front 50wt yellow 10 1.1 rear 45wt orange 10 1.1 The pack feels really good but little to bouncy in bumpy section.