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Tamiya F104 Pro!

Old 10-16-2011, 01:08 AM
  #6631  
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complete opposite ,when you get on the throttle the diff slips badly and if you tighten it to not slip then you have no steering. So basically you have to be very smooth on the throttle.
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Old 10-16-2011, 01:13 AM
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What type of trustbearing do you use?
The original setup or the F103 setup?
Are the diff rings polished or just sanded?
What motor are you running?

regards Roy
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Old 10-16-2011, 01:17 AM
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I don't have a thrust bearing ,i put the diff together like the manual said but i did sand the rings.Original setup and I'm running 21.5 no timing for motor.
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Old 10-16-2011, 01:31 AM
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Had the same problem with a superstock 21T brushed.
When exiting the corner you could here the diff slipping.
I put in a F103 set in there and it works like a charm
Super smooth but good traction even with a 17.5 LRP with no timing
Pack the trust bearing(one piece) with silicon diff grease or black grease and the thrust springs)( like in the F103 manual
Sand the diff rings with 600 wet paper not a higher grade.
Sand them wet.
This will give a rougher finish and a better working diff.
I presumme you use ceramic balls in there?

regards Roy



Originally Posted by 303slowdown
I don't have a thrust bearing ,i put the diff together like the manual said but i did sand the rings.Original setup and I'm running 21.5 no timing for motor.
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Old 10-16-2011, 02:54 AM
  #6635  
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Default Tamiya F104 Pro Black Special for Sale

Check it out here:

http://www.rctech.net/forum/r-c-item...cial-sale.html
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Old 10-16-2011, 03:35 AM
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Originally Posted by 303slowdown
complete opposite ,when you get on the throttle the diff slips badly and if you tighten it to not slip then you have no steering. So basically you have to be very smooth on the throttle.
The other thing i'd suggest is try the sring washer like () as opposed to the manual which probably says )(. Then also install the silver spacer like |] instead of like [| ... so bearing then springs liek so() then spacer like so |].

I've tried all sorts of diffs that this works great on... some just work best when you ignore the manual
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Old 10-16-2011, 08:06 AM
  #6637  
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Beside the Tamiya spur, what other barand of spur I can use in F104? I think the stock spur does not hold enough balls for fast motor.
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Old 10-16-2011, 08:23 AM
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Originally Posted by ioxqq
Beside the Tamiya spur, what other barand of spur I can use in F104? I think the stock spur does not hold enough balls for fast motor.
You need the Tamiya spur gear adaptor 54215, the PRS spur gear hold 12 balls.
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Old 10-16-2011, 08:31 AM
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Originally Posted by E-clip
Hey Calvin
What brand is the front end ??
Or is it a home made job ?

Cheers Mike
Mike,
Yes! It's home R&D
The machinist makes the aluminum parts and he will sells later
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Old 10-16-2011, 10:13 AM
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Originally Posted by MaxSp97
Mike,
Yes! It's home R&D
The machinist makes the aluminum parts and he will sells later
I'm very interested please let me know when available.

And how did you connect the upright to the ball end ?
Looks like you drilled a hole though the ball end but you would need a ball for the cup to connect to. if that makes sense ?

Thanks
Mike
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Old 10-16-2011, 11:06 AM
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Originally Posted by MaxSp97
Mike,
Yes! It's home R&D
The machinist makes the aluminum parts and he will sells later
Interested also
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Old 10-16-2011, 11:10 AM
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Originally Posted by BP SHADOW
I ran both my 104 and my X1 at the TCS finals, I ran the fully hopped up 104 first and then the X1, and once I put the X1 on track the other 104 never turned a wheel the rest of the weekend. The X1 is much more settled, I could clip the curbing on the TAMIYA track and it wouldn't get all out of shape. I am not sure about the X1 on carpet though, I think it will need to be freed up a bit to be fast. On carpet it may have too much side bite and lose some of its ability to rotate properly.

Originally Posted by BP SHADOW
I ran both my 104 and my X1 at the TCS finals, I ran the fully hopped up 104 first and then the X1, and once I put the X1 on track the other 104 never turned a wheel the rest of the weekend. The X1 is much more settled, I could clip the curbing on the TAMIYA track and it wouldn't get all out of shape. I am not sure about the X1 on carpet though, I think it will need to be freed up a bit to be fast. On carpet it may have too much side bite and lose some of its ability to rotate properly.
So the overall conclusion is: dump all the standard, w and pro kits and buy a X1? Or is the is the gap of performance of each car not so big?

regards
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Old 10-16-2011, 12:56 PM
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Originally Posted by ioxqq
Beside the Tamiya spur, what other barand of spur I can use in F104? I think the stock spur does not hold enough balls for fast motor.
I just use standard touring car spurs. The holes are just a little small for the ball bearings so I have a drill piece that takes the holes out a poof-tenth, just enough for the ball bearings to fit properly. Also I use my dremel to take some width from where the ball bearings go through to make them work properly. Then you can just use standard setup. Plus these spur gears are cheap as chips and easy to come by. Doing this works exactly the same to.
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Old 10-16-2011, 02:52 PM
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I think the only difference between the Pro and X1 is weight balance and chassis flex. Add a steel axle to the Pro, some lead weights near the battery, and you will have an X1. Plus no ugly damper sticking out of the body
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Old 10-16-2011, 07:43 PM
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the pro is great F1 if i had my choice and starting again i would have got the X1 for rubber racing. i think eather way you go you will find the car good for asphalt get the soft T bar and go from there..
and the spur adaptor so you can run more balls in the diff
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