PDA

View Full Version : 94mm or 98mm


mitchy2759
2011.09.05, 01:21 PM
Dear all, can anyone share their opinion regarding their preference either 94mm(430gt, 360gtc,, lexus430) or 98mm(599xx, gtr gt500) body better in terms of handling and driveability with x speed motor in medium/large track?
thank you.

color01
2011.09.05, 08:16 PM
Size of the track doesn't matter as much as the type of turns on the track. 94mm pivots better around tight turns but 98mm handles sweepers better, so if you have a large wide oval around the outside of the track, 98mm is likely to be faster, and if conversely most of the turns are low- or medium-speed, 94mm is likely to be faster.

This is exactly the reason why we have 96mm nowadays, it's a straight compromise between the two. :)

yasuji
2011.09.05, 09:07 PM
Size of the track doesn't matter as much as the type of turns on the track. 94mm pivots better around tight turns but 98mm handles sweepers better, so if you have a large wide oval around the outside of the track, 98mm is likely to be faster, and if conversely most of the turns are low- or medium-speed, 94mm is likely to be faster.

This is exactly the reason why we have 96mm nowadays, it's a straight compromise between the two. :)

SO.... ur saying i could be faster if i ran 94?:eek:.... i better try that....;)
me personaly i am a 98mm wide kinda guy... my primary is the mosler then the 599 and just recently the HSV... cant wait till i can get my hands on a wht body

color01
2011.09.06, 12:13 AM
You've never tried it Grant?! :eek: Yes, 94mm pivots faster for sure, the only trouble being you don't have many options for your +3N/+3W fetish. :p

I like 98mm wide for Mod as it makes the car forgiving, but I do also think that the extra width and length of the cars forces you to take a wider line than smaller cars, such as F430, SC430, etc. I'm preparing one of each to tackle Inside Line Racing with at this moment. :)

mitchy2759
2011.09.06, 12:23 AM
how about the gtr gt500 2008 in 98mm? is this a good body to run for race? which one more driveable for race compare to 599xx?

color01
2011.09.06, 12:54 AM
The GT-R and 599 are both very good 98mm bodies. Both have a lot of weight in the rear due to their elaborate rear diffusers, good for low-grip tracks, but you can cut these out to make the car lighter and more agile on high-grip tracks (helps with aero too).

I wrote about this comparison a little while ago, actually, you might find it helpful. :)

http://tinyrc.com/forums/blog.php?b=263

unearthed name
2011.09.06, 01:18 AM
mosler in 96 mm FTW.

hrdrvr
2011.09.06, 07:45 AM
Grant, Why do you think Chad and Philip have been running the small Ferraris for so long? Its because they are good :D

mitchy2759
2011.09.06, 11:50 AM
thx brian and everyone for the input.
i'll try with the gtr gt 500 2008 white body series first before the 599xx.

outlaw-star
2011.09.06, 11:53 AM
For 96mm which bodies support this? I have a F360 I believe in 94mm at the mo.

color01
2011.09.06, 06:38 PM
A lot of bodies work at 96mm. :) Generally, if you take a 98mm body and convert it to 96mm it will work well at low-grip tracks, and if you take a 94mm (or shorter!) body and convert it to 96mm it will work well at high-grip tracks.

Examples:

599XX/HSV/Mosler -- 98mm for medium/high grip, 96mm for low grip, 94mm for ice racing :p

Shorttail McLaren F1 -- 98mm for high-grip, 96mm for medium grip, 94mm for low grip

F360/F430 -- 94mm for low/medium grip, 96mm for high grip

F40/911 GT1 -- 90mm for ice racing, 94mm for low/medium grip, 96mm for high grip (96mm F40 will lose the rear bumper, definitely high grip only)

EMU
2011.09.06, 08:52 PM
Brian, you can keep the rear bumper for 96/98mm on the F40, you just have to glue it in place and cut off the screw posts ;)

Ancient Artist
2011.09.07, 01:35 AM
I've never ran a 96mm car before but have been kicking around the idea lately. The body issue has always concerned me. Exactly how do you convert a 98mm body to 96mm? Or in the McLaren F1 case how do you convert it to a 94mm as well?

A lot of bodies work at 96mm. :) Generally, if you take a 98mm body and convert it to 96mm it will work well at low-grip tracks, and if you take a 94mm (or shorter!) body and convert it to 96mm it will work well at high-grip tracks.

Examples:

599XX/HSV/Mosler -- 98mm for medium/high grip, 96mm for low grip, 94mm for ice racing :p

Shorttail McLaren F1 -- 98mm for high-grip, 96mm for medium grip, 94mm for low grip

F360/F430 -- 94mm for low/medium grip, 96mm for high grip

F40/911 GT1 -- 90mm for ice racing, 94mm for low/medium grip, 96mm for high grip (96mm F40 will lose the rear bumper, definitely high grip only)

blt456
2011.09.07, 01:37 AM
I've never ran a 96mm car before but have been kicking around the idea lately. The body issue has always concerned me. Exactly how do you convert a 98mm body to 96mm? Or in the McLaren F1 case how do you convert it to a 94mm as well?

I've done 94mm bodies to 96mm and 98mm bodies all the way to 94mm. All you have to do is generally shave the wheel wells in the rear to allow proper tire clearance. Some bodies may require extra cutting of the insides.

color01
2011.09.07, 01:53 AM
Brian, you can keep the rear bumper for 96/98mm on the F40, you just have to glue it in place and cut off the screw posts ;)
Bleh, I hate using glue for structural parts of the body, the stuff I have breaks waay too easily.


Artist, to "convert" a body to a certain wheelbase you generally just trim the wheelwells forward or backward, as BLT says. :) Sometimes you can get away with not cutting anything (I've run a 94mm Mosler before without cutting anything!) but it looks awkward, so most of us will end up cutting wheelwells lol.

Ancient Artist
2011.09.07, 02:22 AM
Thanks for the tips. I know it's only a few mm's but for some reason conceptually I had this idea your wheel wells would be ridicoulosly big in the rear so I just kind of dismissed the idea.I'm really am interested in trying a 96mm car though and will have give that a shot.

outlaw-star
2011.09.07, 03:27 AM
I am also gonna give 96mm a try, although I did not associate wheelbase to track grip in my mind :)

color01
2011.09.07, 06:42 AM
It makes sense after a little consideration -- by moving the rear wheels forward or backward, using the same bodyshell, you end up putting more or less (respectively) of the car's static weight over the rear wheels, resulting in more or less forward traction for the rear wheels.

Lateral traction is a different story altogether: moving the rear wheels forward will give you an effectively longer rear overhang, which will basically make your car pivot harder (more turn-in) when off-power or braking. (This is exactly the reason why I say 94mm pivots harder than 98mm.) For many bodies this will cause off-power drifting, which is acceptable for low-grip but no good for high-grip tracks. So you can see that moving the rear wheels back benefits high-grip performance, and moving the rear wheels forward benefits low-grip performance. :)

mitchy2759
2011.09.07, 11:41 AM
how about if i changing the gtr gt500 2008 to 94mm? is this acceptable or will be hard to handle? anyone try this? if possible picture please. thx.

outlaw-star
2011.09.07, 02:45 PM
With respect to grip, I run mainly on RCP so I am guessing this is considered high grip. Will let you know how it goes after running 96mm for the next hfay.

outlaw-star
2011.09.07, 03:08 PM
Sorry another question, is there a pic of where the t-plate has to connect for the 96mm setting on the chassis?

lfisminiz
2011.09.07, 04:10 PM
Like the others said, you need to dremel wheelwells to fit bodies to different wheelbases. Heres some examples of what you can do if you want to have them look better......

lfisminiz
2011.09.07, 04:13 PM
First ....to hide dremeled wheelwell, have the rear area of body a darker color.
This 599XX is dremeled for 96 from original 98. Cant really tell.
http://i998.photobucket.com/albums/af104/lfisminiz/P2240553.jpg

lfisminiz
2011.09.07, 04:17 PM
Next...you can make your own rear side panel. Heres a 98 Mclaren and a 98 Honda. Both re-done to 94M. Davey G (my painter) and i have done this for many bodies. More pics on my gallery.
http://i998.photobucket.com/albums/af104/lfisminiz/P8250298.jpg
http://i998.photobucket.com/albums/af104/lfisminiz/P8140779.jpg

lfisminiz
2011.09.07, 04:20 PM
Sorry another question, is there a pic of where the t-plate has to connect for the 96mm setting on the chassis?

You will have to let us know what motorpod you have. If you have the PN re-configure or Reflex pod, you keep the T plate the same place on chassis. The change happens on the pod instead.

outlaw-star
2011.09.07, 05:43 PM
Cool, I have the reflex racing pod, I have been reading the 03 manual, and I think I have my t-plate attached on the wrong spot for even 94 mm. Would be good to see a pic of this. My current mm t-plate is all the way in, ie right up to the switch. I believe this is the 94MM position but the 03 manual shows a space. Thanks for the help guys.

outlaw-star
2011.09.07, 05:43 PM
to be honest, I think I have the t-plate correct as my 94mm body lines up.

color01
2011.09.07, 07:16 PM
Kyosho's 94mm is actually RM, remember, so that's why there's a space. ;)

On the Reflex pod, to get to 96mm you unbolt the T-plate adapter off the main mount, reverse it (180 degrees) and bolt everything back together. You will probably have to reconfigure your top damper/disk damper/tri-shock/etc. to reflect the extra 2mm you've moved the rear wheels.

mitchy2759
2011.09.07, 08:59 PM
Next...you can make your own rear side panel. Heres a 98 Mclaren and a 98 Honda. Both re-done to 94M. Davey G (my painter) and i have done this for many bodies. More pics on my gallery.

@ifisminiz:
how do you make the rear side panel? what material do you use for the new rear panel? have you done one for gtr? can you show me the pict if you already have one? thx.

lfisminiz
2011.09.07, 09:14 PM
@ifisminiz:
how do you make the rear side panel? what material do you use for the new rear panel? have you done one for gtr? can you show me the pict if you already have one? thx.

I have not done one for the GTR. I/WE use sheets of styrene plastic. Its usually white in color and hobby shops should have them in sheets. Theres different thicknesses. The thicness is more up to you. Just not real thin. What i remember ive done the Mclaren, new Honda, Mazda LM, Sauber LM, Nissan LM.

mitchy2759
2011.09.09, 11:46 AM
You will have to let us know what motorpod you have. If you have the PN re-configure or Reflex pod, you keep the T plate the same place on chassis. The change happens on the pod instead.

i'm using the PN V3 motor mount, can you tell me which area need to be change to achive 96 mm?
the other motor mount is atomic 94mm, can this be done to 96 mm as well?
one more question, if i move back the motor pod to 96, this mean the three shock won't be in a straight line to each other? thx.

unearthed name
2011.09.09, 12:12 PM
Reflex tri shock has 3 holes. The middle hole is for the 96 mm setting.

94 mm atomic afaik can only be changed to the 98 by moving the t-plate. I don't know bout pn one

EMU
2011.09.09, 12:56 PM
The PN v3 is a 94mm mount and does not have the adjustability to do 96mm without changing to a 96mm t-plate. Currently Reflex Racing has the only 96mm t-plates on the market, in order to do 96mm with your motormount, you must use one of these t-plates, and adapt your rear suspension if you use a top shock. Most disc dampers work fine without any modifications at 96mm.

lfisminiz
2011.09.09, 03:56 PM
The PN v3 is a 94mm mount and does not have the adjustability to do 96mm without changing to a 96mm t-plate. Currently Reflex Racing has the only 96mm t-plates on the market, in order to do 96mm with your motormount, you must use one of these t-plates, and adapt your rear suspension if you use a top shock. Most disc dampers work fine without any modifications at 96mm.

mitchy......EMU covered it pretty well.;):)