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Tamiya F104 Pro!

Old 05-11-2012, 08:42 PM
  #8251  
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So the RM01 and F104 V2 use a different diff right?
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Old 05-11-2012, 09:59 PM
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Originally Posted by CR0SS View Post
Okay for those that have more experience with link cars, What differences in chassis feel/handling will a chassis like the V2 with the links close together have vs the Exotek with the links spaced farther apart?
The springs will probably have to be pretty stiff. You're going to have more leverage moving the links in....?? I felt like when I switched to rubber from foam, I went stiffer (heavier tire), this may be similar.

I am known to be wrong, however..
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Old 05-11-2012, 10:01 PM
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Originally Posted by Dan View Post
So the RM01 and F104 V2 use a different diff right?
The part numbers they put out make it sound that way, but the left side parts are interchangeable, so you may still be able to use the old stuff. Probably will need to hear from on high if this is true.
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Old 05-13-2012, 01:16 AM
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Originally Posted by robk View Post
The springs will probably have to be pretty stiff. You're going to have more leverage moving the links in....?? I felt like when I switched to rubber from foam, I went stiffer (heavier tire), this may be similar.

I am known to be wrong, however..
Wouldn't it be the other way around? I think of it like a seesaw. The further away from the center pivot the more leverage you get. When you move the links in I think you need softer springs to get the same feel as having the spring further out.
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Old 05-13-2012, 03:12 AM
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hi all i and using ride tires at the moment and i want to know your thoughts...
i am using

H1 medium rear
s1 soft fronts

am using hard front springs with the medium gold rear spring...
i also have the heavy weight pivot post installed...

i am thinking of going either super soft or medium on the front...
i am also thinking of going back to the standard pivot post...

so which combo would give me more steering????
and do ride tires fit on tamiya wheels???

oh and has anyone tried the tamiya tires on their car
thanks in advance
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Old 05-13-2012, 04:00 AM
  #8256  
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http://www.tamiyausa.com/product/ite...oduct-id=54201

i meant to say these wheels for the ride tires...
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Old 05-13-2012, 04:58 AM
  #8257  
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Not sure on what wheels you need for ride tires.

Everyone I know who has used ride tires suffers from understeer. If you want more steering and overall more grip then Shimizu 571 fronts and 572/575 rears depending on temperature.

Tamiya tires only work on hot summer days to my knowledge.

If you want to stick to the rides then obviously change what you have before you buy new tires. I think the heavy weight pivot post is a bit of a waste so scrap that first off. If you find that takes away too much rear grip then go a soft rear spring with minimal pre-load. Should make up what you lost. The center screw in the t-bar would also assist in making up for lost rear grip from the pivot post.

The softer front spring will give you more front grip so that would be the next thing to work on if you still have understeer.

Another thing to look at is your ride height front/rear. Lifting the rear will give you more front grip as well.

Also do check the steering travel. You want the uprights to almost touch that plastic post on the bottom front arms.

Finally toe out is a big thing as well. This may or may not work with the rides but definitely works with the shimizu rubber. You want to be looking at 3-5 degrees toe out either side.

Actually did have one more suggestion. You could also consider moving the battery forward a few mm at a time. This should also improve front grip.

Just change one thing every race. See what happens and go from there.

I don't think I've left my car the same for a single race yet from the start of the year and we race weekly. Theres always something to experiment with and see how it behaves.
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Old 05-13-2012, 05:09 AM
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Originally Posted by Sydewynder View Post
Wouldn't it be the other way around? I think of it like a seesaw. The further away from the center pivot the more leverage you get. When you move the links in I think you need softer springs to get the same feel as having the spring further out.
Definitely stiffer when going further in. Think of it this way. Try tighten a nut with a spanner with your hand on the end. Then try doing it holding the spanner from half way. You will need a lot more force to tighten it the same. So you would need a tougher spring as you move closer to the pivot point
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Old 05-13-2012, 05:41 AM
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so what brand wheels are you using j-pap???
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Old 05-13-2012, 05:51 AM
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Tamiya f104 foam wheels with shimizu rubber.
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Old 05-13-2012, 05:58 AM
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thanks also...i am using ride medium rear tires.....maybe might try the medium rear shimizu with the shimizu 571 fronts
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Old 05-13-2012, 06:07 AM
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The tires are not similar. So ride medium is not similar to shimizu medium. At the moment the weather is cold enough where When I race during the day the morning race or 2 (we start at 10am) I will use 575's. Then for the afternoon I will use 572's. The switch point is around 25 degrees track temperature at my track.
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Old 05-13-2012, 07:36 AM
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Originally Posted by HeliYogi View Post
Oh don't worry we are very discreet at this forum, rarely post at other F1 or non F1 forums.

Right guys?

M

Just in case anyone needs a better view (only for us - not to be divulge)

New F104 V2 JUST OUT!


Hot off the press! New F104V2
My only question(s) is, is my current F104V1 now, able to be upgraded to a V2? Part numbers, manual, etc would be helpful.
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Old 05-13-2012, 08:00 AM
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Originally Posted by RonF View Post
My only question(s) is, is my current F104V1 now, able to be upgraded to a V2? Part numbers, manual, etc would be helpful.
Whatever part number the new kit is, that's your part #....The only thing that looks the same is the front end and wings
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Old 05-13-2012, 09:10 AM
  #8265  
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It'd be too much money to convert over. Your best bet is the Exotek F1R conversion since you'll be able to use the same motor pod rear end. Plus the setup is very similar with the side damper.
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