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Old 01-30-2009, 09:11 AM   #15181
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Originally Posted by Lonestar View Post
Hi guys

always a lot of people to talk fdr but not that many to talk true setup changes impact... (just being a bit provocative here, but as usual this "technical" forum has a low S/N ratio...).

Anyone knowledgeable wants to take a crack at it? rc-pete? Korey?

thanks guys,
Paul
Sorry Paul, I've been slammed with school haha. This is the first tim eI've been able to relax and breathe for over a week. Anyway, I'm sure I can help out.

Front wheelbase changes:

So usually if I shorten the wheelbase in the front end (move the arms back) it makes the car sit on the nose more. Now, it;s been hard for me to be able to tell how it changes the car in the three main parts of a corner (entry, mid and exit). But I do know it will generally make the car have more steering and be more aggressive off power, and have more rear grip on power (more available weight to transfer to the rear from the front). If you lengthen the wheel base in the front (move the arms forward) it will smooth out the car and make it feel like a Cadillac .

Rear wheelbase changes:

Generally when I lengthen the rear wheelbase on a car, I notice it tends to make the car have a little more on power steering, and be very smooth at the same time. I can't really explain why, but that is what I've felt before. Shortening the wheelbase will give really good low speed steering in those tight 180's and such, but have less on power steering.

That's about as detailed I can get. Other tha the obvious when you change the front and rear wheelbase together: Longer is smoother, and shorter is more aggressive.

-Korey
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Old 01-30-2009, 09:27 AM   #15182
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Glad yoy liked it. Sorry I put everything in zip lock bags. I wanted to keep my parts box. I haven't been able to find the same style again Call me cheap
not a problem...i got a few boxes already and (honestly) didn't need anymore now I just gotta merge all the parts
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Old 01-30-2009, 09:32 AM   #15183
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Originally Posted by Lonestar View Post
Hi guys

always a lot of people to talk fdr but not that many to talk true setup changes impact... (just being a bit provocative here, but as usual this "technical" forum has a low S/N ratio...).

Anyone knowledgeable wants to take a crack at it? rc-pete? Korey?

thanks guys,
Paul
My $0.02, as well:

I concur with your conclusion, Lonestar, that altered weight distribution is the primary result of a wheelbase change. The geometry change... even a 1 or 2mm wheelbase change over a distance of 258mm, I've never considered significant.

With the wheelbase at full length on both ends, you would have more weight around the center of the car and therefore the lowest polar moment of inertia (the ability to turn/rotate the car). This will allow you to turn it in with less effort and also straighten it out coming out of a turn with less effort. I find this to be the most responsive setup, like a mid-engined full sized race car.

Shortening the front end puts more weight towards the front. Turn in is smoother and more progressive. I find this works well on longer corners with decreasing radius, like a sweeper into a hairpin.

Shortening the rear end puts more weight towards the rear. The 'backpack effect' is a good way to put it. It allows you to swing the rear end and rotate the car more on power. This is again handy for longer corners... you can get on the power sooner and not have the car straighten out right away.

With both adjustments, you also have a slight side effect to the other end of the car. Shortening the front mostly affects the front weight distribution, but it also takes a slight amount of weight off the rear. The reverse would go for the rear adjustment.

Edit: Ha... just read Korey's post... different drivers look for and feel different things. I was doing a driving/tuning seminar for the guys at my track this week, and that's one of the things I told them... you have to tune for you.
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Last edited by rc pete; 01-30-2009 at 10:26 AM.
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Old 01-30-2009, 02:52 PM   #15184
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thanks k_bojar very helpful
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Old 01-30-2009, 03:07 PM   #15185
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Originally Posted by Lonestar View Post
Hi guys

always a lot of people to talk fdr but not that many to talk true setup changes impact... (just being a bit provocative here, but as usual this "technical" forum has a low S/N ratio...).

Anyone knowledgeable wants to take a crack at it? rc-pete? Korey?

thanks guys,
Paul
Going off your original question....is the grip going from low to high?
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Old 01-30-2009, 05:14 PM   #15186
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I have a question about layout changes and what should you do when your local track changes the layout? I think it is basically this. The setup before had wider turns than shown here form what I am thinking. What would be a good setup for tighter turns than I am used to,or is that a wierd question? thihttp://www.rctech.net/forum/attachments/racing-forum/407075d1232097138-360-rc-speedway-
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Old 01-30-2009, 08:42 PM   #15187
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please contact me if you or know anybody with a Surikarn Ed. Cyclone
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Old 01-30-2009, 11:45 PM   #15188
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While were talking about weelbase , if i reduce the front or even rear weelbase , wouldnt it afect the shock angle as they are screwed to the arms wich will move ?
Corect me if im wrong.
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Old 01-31-2009, 04:56 AM   #15189
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check this out:http://www.redrc.net/2009/01/fxf-cyc...now-available/

what is the maker of this convertion?any comments on this new convertion?
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Old 01-31-2009, 06:24 AM   #15190
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Hi ,

I have moved the battery position in my car ( 5 cell ) , before the pack was in the front of the car , and know i have moved it to the rear . I run a 6 cell chasis with 5 cell pack .
What is the efect of the pack being in the rear instead of the front ?
Is there a noticeable difference ?

Last edited by cyclone speed; 01-31-2009 at 06:50 AM.
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Old 01-31-2009, 07:08 AM   #15191
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please contact me if you or know anybody with a Surikarn Ed. Cyclone
I have one I race.
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Old 01-31-2009, 08:13 AM   #15192
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Originally Posted by RMF-888 View Post
check this out:http://www.redrc.net/2009/01/fxf-cyc...now-available/

what is the maker of this convertion?any comments on this new convertion?
Anyone tried one of these out yet?? Also, anyone know the price??
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Old 01-31-2009, 02:36 PM   #15193
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Ronald Völker's Cyclone at the Indoor Euros this weekend...


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Old 01-31-2009, 04:56 PM   #15194
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anybody have a used TC for sale?
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Old 01-31-2009, 06:11 PM   #15195
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Anyone tried one of these out yet?? Also, anyone know the price??
i saw some photo in the last world championship...so its been race test already....
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