2LikesXray T3 2011
03-09-2011, 06:20 PM
#1681
Here are my thoughts on the subject, just an opinion.
Hypothetical situation:
High speed, constant radius left hand sweeper. Rolling torque above what the springs and/or rollbars can counter, therefore the right side is against the upstops. You have no more uptravel left so essentially you have a rigid suspension on the right side of the car while in the turn. A slight bump comes along (even a very slight bump). The bump would cause both right side tires to lose contact with the ground (ignoring tire decompression, A arm flex and other things that I didn't think of). Even with zero damping, inertia would not allow the suspension to accelerate instantly to maintain tire contact. Right tire traction goes to zero.
While a chassis dragging would reduce traction it would not quite eliminate all of it and the suspension would drop (maybe?) as the chassis lifts and maintain some tire contact.
The tires leaving the ground would be a very rapid change while losing traction then again when when either the rolling torque pushes the tires back down or the suspension drops, while the chassis dragging would not have such a violent affect.
Just an opinion, no facts were involved in this post.
Not exactly an answer to your question but a possible solution to chassis dragging with possibly less affect on handling would be 2 stage springs or a more narrow chassis.
Hypothetical situation:
High speed, constant radius left hand sweeper. Rolling torque above what the springs and/or rollbars can counter, therefore the right side is against the upstops. You have no more uptravel left so essentially you have a rigid suspension on the right side of the car while in the turn. A slight bump comes along (even a very slight bump). The bump would cause both right side tires to lose contact with the ground (ignoring tire decompression, A arm flex and other things that I didn't think of). Even with zero damping, inertia would not allow the suspension to accelerate instantly to maintain tire contact. Right tire traction goes to zero.
While a chassis dragging would reduce traction it would not quite eliminate all of it and the suspension would drop (maybe?) as the chassis lifts and maintain some tire contact.
The tires leaving the ground would be a very rapid change while losing traction then again when when either the rolling torque pushes the tires back down or the suspension drops, while the chassis dragging would not have such a violent affect.
Just an opinion, no facts were involved in this post.
Not exactly an answer to your question but a possible solution to chassis dragging with possibly less affect on handling would be 2 stage springs or a more narrow chassis.
03-09-2011, 06:40 PM
#1682
i agree. i just don't have experience on the track with these things which is why I am asking for all this info. It is precisely because the 1/10 scale cars are scaled in size but not in weight that I am so confused about. I am mostly thinking of the aluminium chassis on my nitro cars. It is very stiff and barely flexes at all unlike a real chassis that carries 1000kg. That's why I am led to believe that hitting the ground will just make the whole car jump as opposed to a big car which would flex due to the weight and inertia.
I am not an expert in the real thing by any means. I am not an automotive engineer, I just go by a few things I know and experienced. That's why I asked for an explanation and some people provided very nicely. I am not 100% convinced but I am starting to see the logic behind it. I would love to experiment a bit on the matter if i get the chance and share my findings.
Many thanks to the guys who tried to clarify things. We shouldn't take the thread more off the topic though.
I am not an expert in the real thing by any means. I am not an automotive engineer, I just go by a few things I know and experienced. That's why I asked for an explanation and some people provided very nicely. I am not 100% convinced but I am starting to see the logic behind it. I would love to experiment a bit on the matter if i get the chance and share my findings.
Many thanks to the guys who tried to clarify things. We shouldn't take the thread more off the topic though.
1.5Kg *10 =150Kg *10 =1500Kg (typical car) and the grip we have available is far higher than anything for real.
03-09-2011, 07:21 PM
#1685
Tech Addict
I'm thinking to use fix pistons in shocks. What is good selection? 2 or 3 holes? What thickness for the shock oil? For running outdoor with good traction. thanks
03-09-2011, 07:42 PM
#1686
Tech Master
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03-09-2011, 07:53 PM
#1687
Tech Elite
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First of all i am not driving a train. if that's what you do for a living, that's your own problem go look at your face in the mirror and laugh but otherwise you can stick your sarcasm up your own rear. Maybe you should have considered a mechanical engineering degree like me.
Second, yes, on rare occasions the chassis can hit the ground even in real race cars. You cannot prevent it 100% of the time and there are many reasons why it can hit the ground but the general idea is to use suspension travel to prevent that.
I love how touchy some of you are on the subject. What's wrong? Someone pointed out a flaw in your precious little toy cars?
Second, yes, on rare occasions the chassis can hit the ground even in real race cars. You cannot prevent it 100% of the time and there are many reasons why it can hit the ground but the general idea is to use suspension travel to prevent that.
I love how touchy some of you are on the subject. What's wrong? Someone pointed out a flaw in your precious little toy cars?
This is the Xray T3 2011 forum. that is final. Period.
again kindly move your discussions to the general talk threads, AKA Chat Lounge
back to the T3 2011.
what tires is everyone having luck with.
Tried Solaris Mediums on carpet but Jacos Blues felt way better.
any suggestions
03-09-2011, 07:54 PM
#1688
Tech Adept
03-09-2011, 08:08 PM
#1689
springs
can associated springs be used on the t3? I have an entire set and wanted to know...
03-09-2011, 08:14 PM
#1691
03-09-2011, 08:24 PM
#1692
Please take this super self-diagnosed intelligence to the discussion forum.
This is the Xray T3 2011 forum. that is final. Period.
again kindly move your discussions to the general talk threads, AKA Chat Lounge
back to the T3 2011.
what tires is everyone having luck with.
Tried Solaris Mediums on carpet but Jacos Blues felt way better.any suggestions
This is the Xray T3 2011 forum. that is final. Period.
again kindly move your discussions to the general talk threads, AKA Chat Lounge
back to the T3 2011.
what tires is everyone having luck with.
Tried Solaris Mediums on carpet but Jacos Blues felt way better.any suggestions
Just Kidding!
On that question, JACO is all I'll run, unless I have to run another pending track regulations.
03-09-2011, 08:35 PM
#1694
Tech Elite
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Location: Far away from Covid19 but close to 20
Posts: 4,129
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lol
too funny
..
2011 Kit setup worked very well with Jacos..
but the minute I put on new Solaris setup went to shizz...
Anyone have any suggestions on what to change setup wise to adapt to the tires.
..
2011 Kit setup worked very well with Jacos..
but the minute I put on new Solaris setup went to shizz...
Anyone have any suggestions on what to change setup wise to adapt to the tires.
03-09-2011, 09:04 PM
#1695
I run Paul's Cleveland setup mostly but when running Solaris I add 0.5 degrees of -camber to the front and rear during the break-in period and sometimes even a little more rear toe in + 0.5 depending on track conditions.
I also find that I dope the rear tires a little longer when using Solaris untill the traction comes up.
Let me know how it turns out.
