On-Point Racing

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Old 10-09-2011, 03:19 AM
  #166  
CFR
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Originally Posted by pinky13 View Post
im new to 1/12th and wanna no what the damper cause the car to do comparing them to the stock shocks
posted on a UK forum by a seasoned 12th racer


The oil-filled damper (to give it the correct term - the shock absorber is actually the spring, and the damper dissipates the energy in the spring in a controlled (damped) manner to avoid oscillations that give poor handling and roadholding) will need an amount of energy to start moving that is more than energy required to start a damper tube moving.

In pan cars, they are usually light and so the energy that is imparted to the damper is quite low. If the design of the oil-filled damper is not well thought through, then that energy won't be enough for a smooth movement - it has to build up until there is enough to overcome the viscosity of the oil - and the car lurches into the corners. Additionally, there is a friction force between the o-rings and the piston rod that has to be overcome throughout the stroke.

A damper tube relies on the very low shear force in the (silicon-based) oil between the piston and cylinder, and is much easier to start moving, as well as keep moving. As this oil is not only the damping medium but also the sealing medium, it has very low static friction as well.

Having said all that, one might conclude that the damper tube is the preferred choice. It is, if the oil-filled damper is not the right design, and the friction in the o-ring seals is high due to poor design or poor build. Additionally, it is easier to build a good pair of damper tubes than it is to build a good oil-filled damper.

The Associated Micro-shocks are good items, they work well and give good performance. However, and it's a big however, they only work well if you understand how much damping is needed, and how to build them so they have minimal static friction from the o-ring seals. New drivers to 12th and GT10 will have more success with tube dampers than oil-filled dampers, but teaching someone to build a proper oil-filled damper is part of the fun of pan car racing!! HTH (but if not, come back with more questions!)

Last edited by CFR; 10-09-2011 at 12:46 PM.
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Old 10-09-2011, 08:43 AM
  #167  
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Great find CFR. Best explanation I've seen yet.
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Old 10-10-2011, 01:54 PM
  #168  
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Originally Posted by LonnyJ1950 View Post
Great find CFR. Best explanation I've seen yet.
Ditto. Fantastic explanation of the physics behind the lateral damping on 12th scale pan cars...
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Old 10-13-2011, 03:17 PM
  #169  
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My car from vegas!
Attached Thumbnails On-Point Racing-img_1360.jpg  
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Old 10-13-2011, 05:04 PM
  #170  
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Nice ride !

Your car was dialed in vegas.
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Old 10-16-2011, 10:50 PM
  #171  
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Originally Posted by chicky03 View Post
Here is a list of parts you will need to complete the kit. If you have had a 12th scale before you might have some or most of it already.

1. Complete 12th rear axle and diff. Recommended IRS2132BK or IRS2136 for CRC and Xceed tires.
2. 12th center shock, AE, Hotbodies, IRS, CRC, Silva
3. ASC6274 ball cups, for damper tubes, steering and shock
4. Ride height adjusters Recommended IRS1167
5. 3mm flat head screws 3x6
6. Servo mounts
7. ASC31284 for top of shock and 1mm shim under ball stud.
8. ASC4635 side links and football
9. ASC4637 link pivot balls (5)
10. Body mounts
11. ASC4686 R5 front end or just plastic parts and camber turnbuckles
12. ACS31280 Short ball stud for bottom center shock mount, and servo saver
13. turnbuckles for steering
14. 3mm low profile nuts
15. Kimbrough Medium servo saver


The turnbuckles and body post in the picture are from Serpent. The tubes come with the kit.

Let me know if you have any more questions.
What would you suggest as a similiar list for the OP105 serpent conversion? so far i have:

1. ASC6274 ball cups, for damper tubes, steering and shock
2. ASC4635 football
3. ASC4637 link pivot balls (5)
4. Kimbrough Medium servo saver
5. SER411201 (2) to make 4 total rear standoffs
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Old 10-17-2011, 08:11 AM
  #172  
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Originally Posted by avs View Post
What would you suggest as a similiar list for the OP105 serpent conversion? so far i have:

1. ASC6274 ball cups, for damper tubes, steering and shock
2. ASC4635 football
3. ASC4637 link pivot balls (5)
4. Kimbrough Medium servo saver
5. SER411201 (2) to make 4 total rear standoffs
Looks right! Also add ae servo mounts and if you want to get Orange standoffs for the rear.
https://www.ssl-stormerhobbies.com/c...=ns&pn=AXA1396
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Old 10-20-2011, 07:21 PM
  #173  
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Originally Posted by sdunnmcp View Post
Here is my setup from the Hurricane series this past weekend. My car was fast and corner speed was very quick (See attachment from Main). In the main I had a fast car but had back luck with dead car in a turn that ended my day. Oh well, we showed the car is good in both Mod and Stock.



Middle:
Blue Associated Center Spring
Blue Associated Side Springs pre-loaded with 1 turn
Kyosho 15,000 lube on tubes
3.7mm Ride Height

Steve Dunn
Indianapolis, IN USA
just curious about what shock you use, is it a hotbodies or?

maybe its my clumsy fingers, but i can never get the silva shock to minimal rebound without air.

i have only seen pictures of a hotbodies shock, and it appears to be similiar to the silva shock, is there much difference?
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Old 10-24-2011, 03:18 PM
  #174  
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Steve Dunn,

You have PM.
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Old 10-24-2011, 04:19 PM
  #175  
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Originally Posted by chicky03 View Post
My car from vegas!
It's great I haven't seen a 12th I don't like yet.

This is amazing so many 12th cars

And the On-point looks awesome
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Old 11-04-2011, 08:01 AM
  #176  
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Thanks to On-Point Racing for coming on board as the sponsor for the 1/12th Mod Class at the US Indoor Champs!!!
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Old 11-11-2011, 12:02 AM
  #177  
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Looking forward to seeing the On-Point guys strut their stuff at the 32nd US Indoor Champs Thanksgiving Week. Good luck Paul C., Steve D. Mikey P. etc.
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Old 11-11-2011, 04:44 PM
  #178  
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Originally Posted by CypressMidWest View Post
Thanks to On-Point Racing for coming on board as the sponsor for the 1/12th Mod Class at the US Indoor Champs!!!
Originally Posted by CypressMidWest View Post
Looking forward to seeing the On-Point guys strut their stuff at the 32nd US Indoor Champs Thanksgiving Week. Good luck Paul C., Steve D. Mikey P. etc.
We can't wait as well!! Will be a good time!
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Old 11-11-2011, 05:19 PM
  #179  
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Restocking Stormer any time soon? Good luck at the race.
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Old 11-11-2011, 05:21 PM
  #180  
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Originally Posted by LonnyJ1950 View Post
Restocking Stormer any time soon? Good luck at the race.
Yes, sending them out Monday!
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