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Schumacher Eclipse 2 1:12 chassis

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Old 11-15-2018, 12:25 PM
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Originally Posted by DavidNERODease View Post
View the suspension from the back of the car, draw a line through the aft side link ball joints and the centre pivot. That's it. Done.
Well - no, the direction of the side links must be considered too. To illustrate this, think of tilting the sidelinks up by 90į. Then it is only possible to do a "roll motion" also along the 90į tilted direction. (It would still be a kind of trailing arm, allowing a suspension movement)

What else can I say. I looked into my reference literature "RC-Car Fahrwerkstechnik" by Dr. Achim Schulz.
Amazon Amazon
He explains the same as I wrote. Unfortunately its written in german language.

BR Erhard

P.S.: Achim Schulz is a chassis designer at Porsche Motorsport and RC Car enthusiast. He designed the Hatzenbach Cars with some regional success due to not beeing commercially available. The rear axis concept is quite interesting:
http://www.rc-car-museum.de/1_12_Mod...chsprinzip.jpg

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Old 11-15-2018, 02:33 PM
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Umm the Ascari ( The car that used the Suspension in the pic you provided) didn't use a fixed pivot for the pod. If the Pod is floating and located by links the roll center will be located by all of the links.
In a Link style pan car, where the pod is attached to a fixed pivot the roll center is half the distance from the center of the pivot to the pod attachment point.
That is why when you run 2.5mm of spacers under the pod plate on the Eclipse the roll center comes up to the same as "Normal" pan cars.
I run Schumacher cars, I have 2 Eclipses, I run on high grip black carpet and I am running 3.75mm under my pod. I also tune the side links for rear steer when running a spool.
Playing with the links on a fixed pivot pan car won't move the roll center.
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Old 11-15-2018, 10:26 PM
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Originally Posted by patorz31 View Post
Umm the Ascari ( The car that used the Suspension in the pic you provided) didn't use a fixed pivot for the pod. If the Pod is floating and located by links the roll center will be located by all of the links..
Yes, in the mentioned book it is explained in detail how to find the roll center of Ascari or Hatzenbach link rear design.

Originally Posted by patorz31 View Post
Playing with the links on a fixed pivot pan car won't move the roll center.
No, in the same book it is clearly explained what a tilted link does.

Whom should I trust, you guys, or a Porsche Motorsports and RC-car chassis designer?

BG Erhard

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Old 11-16-2018, 05:19 AM
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Go what ever way you want, but i know the Eclipse doesn't have the Hatzenbach link rear design.
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Old 11-16-2018, 11:19 AM
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Originally Posted by patorz31 View Post
........... i know the Eclipse doesn't have the Hatzenbach link rear design.
me too, but thats not the point.
Maybe you read with more care ;-)
The mentioned book about RC Cars has a chapter about pancars, describing how to derive its roll center. Definitely for link and pivot design.
Clear?
BR Erhard

Last edited by Erhard; 11-17-2018 at 07:08 AM.
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Old 11-16-2018, 02:57 PM
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anyone watching IIC, Andy and the Eclipse 2 are doing pretty great!
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Old 11-18-2018, 12:28 AM
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Originally Posted by jetnjme View Post
anyone watching IIC, Andy and the Eclipse 2 are doing pretty great!
Thanks for the hint! Do you have a link to complete, detailed results?

++++++++++++++++++++++++++++++++
qualifying results found at:
https://www.facebook.com/internation...championships/
++++++++++++++++++++++++++++++++

IIC 2018 Las Vegas: Qualifying is Done at the 2018 IIC!

Qualifying at the 2018 IIC has come and gone. Racers today gave it all and though some desired results werenít achieved; itís not over until itís over. One round of lower mains were ran tonight giving racers a chance to bump up to the next main and possibly all the way to the A-Main with any luck. Mains will continue on Sunday, the last day of the IIC starting with the remainder of the lower mains moving onto the Triple A-Mains. Be sure to check out all the action!

....

1/12th Modified Presented by Tekin
1 Ė Alexander Hagberg
2 Ė Keven Hebert
3 Ė Andrew Knapp
4 Ė Andy Murray
5 Ė Monti Panzica

...........
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Old 11-19-2018, 05:50 AM
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Great result as 3rd in A-main 1! The car certainly is competitive.
Does anyone know what happened to Andy Murray in A-main 2 and 3?

BR Erhard
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Old 11-21-2018, 04:46 PM
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Default Kingpin lube???

Even with polished kingpins, My steering blocks donít slide as smoothly on the kingpins as I would like. For lubes Iíve tried shock oil, black grease, and dampener tube lube. None work very well. All feel a little scratchy. Has anybody come across some sort of lube that yields nice smooth sliding of the steering blocks on the kingpins?
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Old 11-21-2018, 05:20 PM
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Did you polish the inside sleeve on the block also?
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Old 11-21-2018, 05:46 PM
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Nope. The steering blocks have some sort of hardcoat finish on them that looks almost like anodizing, only smoother and shinier. Didnít want to risk screwing that up.
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Old 11-21-2018, 05:50 PM
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With kingpin polished it only leaves one thing.. Might bevel edges on steering blocks a tiny bit with a countersink bit first tho, if its not that way already.
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Old 11-21-2018, 06:13 PM
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Steering Blocks have beautifully chamfered edges from the factory. Some of the nicest looking RC pieces that iíve seen.
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Old 11-22-2018, 07:24 AM
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I'm still wondering what is best to do with the steering blocks/kingpin friction myself. All the parts are so beautiful but there is a lot friction there.
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Old 11-22-2018, 07:59 AM
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Ream and polish.. Or keep having this conversation lol
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