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Old 06-05-2003, 02:26 AM   #4816
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Default Re: Re: Re: Re: Re: Re: Re: Re: Re: QUESTION

Quote:
Originally posted by Novarossi
And Lam must be Darth Vader?
and I'm always the fish!
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Old 06-05-2003, 03:12 AM   #4817
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This one is for you Manti, read this....

This is this cat
This is is cat
This is how cat
This is to cat
This is keep cat
This is a cat
This is retard cat
This is busy cat
This is for cat
This is forty cat
This is seconds cat

Now go back and read the THIRD word in each line from the top.
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Old 06-05-2003, 03:17 AM   #4818
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Quote:
Originally posted by Novarossi
This one is for you Manti, read this....

This is this cat
This is is cat
This is how cat
This is to cat
This is keep cat
This is a cat
This is retard cat
This is busy cat
This is for cat
This is forty cat
This is seconds cat

Now go back and read the THIRD word in each line from the top.
no your trick didnt work mike ! i usually read the first and last and skip the busy part !!

you took me 10 seconds only !
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Old 06-05-2003, 03:32 AM   #4819
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Quote:
Originally posted by Manticore
no your trick didnt work mike ! i usually read the first and last and skip the busy part !!

you took me 10 seconds only !
Your too good. I sat there reading it all
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Old 06-05-2003, 03:36 AM   #4820
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Quote:
Originally posted by Novarossi
Your too good. I sat there reading it all
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Old 06-05-2003, 04:18 AM   #4821
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Quote:
Originally posted by Novarossi
This one is for you Manti, read this....

This is this cat
This is is cat
This is how cat
This is to cat
This is keep cat
This is a cat
This is retard cat
This is busy cat
This is for cat
This is forty cat
This is seconds cat

Now go back and read the THIRD word in each line from the top.
I was entertained
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Old 06-05-2003, 05:03 AM   #4822
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Quote:
Originally posted by Jonathan
?

Sparsky

Yeah....He was born on Chinese New Year's Day!!!

Thanks guys
me too...
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Old 06-05-2003, 05:27 AM   #4823
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Default Re: Re: Re: Re: Re: Re: Re: QUESTION

Quote:
Originally posted by Novarossi
What do you do for work anyway? Im expecting you say doctor/lawyer/engineer with the amount of money you spend
if he's a doctor - he would be wearing a pair of surgical glove at the track..fixing his car!
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Old 06-05-2003, 09:02 AM   #4824
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Default Re: More Overdrive talk!

Quote:
Originally posted by kevink2
Recently had a small chat with another member of this thread (here's a hint: his handle starts with a P and ends with a T)regarding overdrive for an MRX-3. I thought I might post his reply because it applies also to the MTX-3:

My q:
Recently I began using the overdrive 25T pulley . . .

<Big SNIP of interesting stuff>

I've been schooled...
PMT, kevink2,

Speaking of 25T pulleys and the like, I've often wondered about their impact on suspension geometry.

For instance, if you change to the 25T pulley and use, say, a 6mm split front to rear, you must then raise the front of the chassis by 3mm to maintain (for example) an equal ride height F/R.
You have now altered the front geometry with respect to the rear as originally designed by the manufacturer, yeah?

Maybe this is generally a good idea, and possibly the effect on the manufacturers geometry balance F/R is inconsequential.
I'm also wondering that maybe a MRX-3, not being a Touring Car chassis, "requires" the use of smaller front wheels to "maintain" it's correct geometry balance F/R.
That is: Can you transfer what works on a MRX-3, directly to the MTX-3?

Oh, and I just had to go and check the contents of my tyre box. I am ashamed to say there only about 65 pairs in there - none with paint markings. I dunno how anyone could get by with only 3 or 4 pairs.
On a practical note, I'm stingy. I'd prefer to invest extra $$$ in tyres and do next to zero truing, than continually buzz off that expensive rubber in order to maintain a small number of tyres - maybe that's just me.
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Old 06-05-2003, 05:46 PM   #4825
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Default Re: Re: More Overdrive talk!

[QUOTE]Originally posted by Taylor-Racing
[B]PMT, kevink2,

Speaking of 25T pulleys and the like, I've often wondered about their impact on suspension geometry.

For instance, if you change to the 25T pulley and use, say, a 6mm split front to rear, you must then raise the front of the chassis by 3mm to maintain (for example) an equal ride height F/R.
You have now altered the front geometry with respect to the rear as originally designed by the manufacturer, yeah?

Maybe this is generally a good idea, and possibly the effect on the manufacturers geometry balance F/R is inconsequential.


Hello Taylor, you hit the nail on the head. I touched on this in the post to kevink2 and will copy it below. But you are correct that when you start altering tire diameters while keeping the ride height or level of the chassis equal you are changing the angles of the suspension arms. This in essence changes your geomety and how the forces are applied to your suspension/car, how it react and where the different planes intersect. To viasualize this simply in your mind extend a line that is level with each of the suspension arms and see where they intersect. Now lower the suspension arms i.e. increase the ride height and you will see that all of the angles have changed and the points where the line intersect are in different positions than before. This is how you can see how your alterations to settings can affect your roll axis, roll center etc. An interesting thing is that your roll center can actualy bebelow the car (in the ground) and when cornering and the car is leaning can actualy be next to the car. This stuff gets realy complex but take some graph paper and draw your front suspension on it under different conditions i.e. accelerating, breaking cornering etc, intersect the lines and you will start to see what I mean. This stuff borders on a black art that I'm have spent a lot of time trying to learn (it's not fun). What I have found is that even full size race car designers sometimes know that having a certain geomety has a certain affect but they just don't know why! Pick up a couple of race car suspension design books, this is the best way to start learning about this.


Quote from previous post to Kevink2
Running the 25T pulley allows you to run smaller front tires i.e. larger splits (@9mm) while still maintaining an overdrive ratio of 1 (aproximate numbers here). The reason that you would do this is primarily that it raises your roll axis on the front end. Raising the roll axis means the car stays flatter through corners puts more weight on the inside front tire when cornering which is not necessarily bad as the outside tire is being loaded by the G's of cornering so it argubly makes the car corner more efficiently. Having said this, when you start talking about roll axis things are getting realy complex and it's difficult to do without drawing out diagrams to show the geometry of the suspension and how the pivot points intersect.







I'm also wondering that maybe a MRX-3, not being a Touring Car chassis, "requires" the use of smaller front wheels to "maintain" it's correct geometry balance F/R.

1/8th scale cars are designed from the start to run stagger so I would think that this was taken into account by the designers when they were developing it. Having said that though they must realise the importance of being able to alter the geometry which is why I belive they included the 25T pulley. Basicaly allows you to cahnge from a 6-7mm split to a 9mm+ split which as mentioned above changes your roll axis.


That is: Can you transfer what works on a MRX-3, directly to the MTX-3?

The geomety of the cars are different so I would lean towards saying no. However all of what we have been discussing regaridng suspension angles, roll axis, roll center etc. applies to each and every model, full size, race car etc that has suspension arms and as such the theories can be applied to each of them. Hope this helps.
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Old 06-05-2003, 06:02 PM   #4826
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Quote:
Originally posted by PMT
quote:
Originally posted by Jonathan

Manticore.

While it's true info is out there...PMT seem to have a way to make basic info basic...




Yaaaawwwwnnnnnn....... are we starting again?
bah!!, stop baiting dude!!! manti has been around longer than you and is respected alot more than u and actually gives straight answers and not a friggin thesis to every question...

why did u come and attack him straight up anyways ? ? cause he knows more than you ? ?
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Old 06-05-2003, 06:10 PM   #4827
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Default Re: Re: QUESTION

Quote:
Originally posted by Manticore
there are different calculations about the conversion.

personally I use the following formula for conversion

(#/10)-5

e.g. #600 = (600/10)-5 = 55WT.
Is this calculation true for all types I heard that 600mugen oil isnt the same as 600 kyosho oil and 60AE oil wasnt the saime as 60 losi oil etc
I think I will stick to the Mugen oil to save coffusion
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Old 06-05-2003, 06:11 PM   #4828
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Manti we know that you love your RC cars what type of controller do you use to controll these beasts?
Have you had different types?
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Old 06-05-2003, 07:23 PM   #4829
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started getting boring with this board not as interesting before...wake up..anybody out there?
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Old 06-05-2003, 07:30 PM   #4830
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TBR...

I think the easiest thing to do with shock and diff oils is to stick to the same brand. Less confusing. lol

Oh, and there is only one controller worthy of Manti's touch.

3PK baby
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