Tamiya TRF503 announced with picture - Page 15

SiR_Dave · #**281** 20-04-2014

Quote:

Originally Posted by guinness

Guys we all should keep an eye on the TRF blog were the tamiya team driver are already playing around with the 503 setup .
For carpet setups I think we all have to help each other.
Here is the link http://www.teamtrf.com/index.php/drivers/blogs

Good info there I didn't even see that before....

patez · #**282** 21-04-2014

Good tip from teamtrf thanks! I also have pretty much Jimmy Wright setup on 201xr as well.

I also noticed there's much less ackermann on the kit setup than what i've had in my 501. And I really liked how 501 cornered.. So i've flipped the steering rack now. (Moving the ball "back" gives you more ackermann right?)

Also the rear was surprisingly soft in big jumps. I had little trouble slammin the rear on take off. Without the ballast and lightest batteries it still slammed the rear. It was kinda strange, because i hadn't that problem with normal bores at all. (on 201xr the big bores worked beautifully on the same track altought with 1.6mm piston) So the 1.6mm piston could be the solution for 4wd too. Oils we're UR 40 front and 35 rear.

Here's a comparison of the steering racks (503 up as in the kit setup). U also see it was a bit wet because the snow just has melted up here.

SiR_Dave · #**283** 21-04-2014

Looks like you already flipped the steering rack on the 501x so that might be why you liked the steering from it

...
Anyways I tried the flipped rack this past weekend and it does make the car a bit more on edge for entry steering..

Now I have not run into the issue with the rear slapping on big jumps

... but I have switched over to a red rear spring and I like it a lot better

....
I will be putting the TRF503 on scales today to see how the weight is balanced out

and compare it to the TRF511 and TRF502x as well

Also patez... clean your car its dUrty

SiR_Dave · #**284** 21-04-2014

Did a little corner balancing with the TRF503... comes out very good!!

guinness · #**285** 22-04-2014

Quote:

Originally Posted by SiR_Dave

Sure... I tried the 10* but I switched outer to the 12* front hub and have done more testing with the 12*...

I might try the 10* next week when I have more time at the track

Mi right in saying that going with a lighter diff oil in the front should help with the turn in ?I'm 99%sure that it will.

SiR_Dave · #**286** 22-04-2014

It's worth a try

.. I have a spare Diff I can put 5000k into and try it out

guinness · #**287** 22-04-2014

Quote:

Originally Posted by SiR_Dave

It's worth a try

.. I have a spare Diff I can put 5000k into and try it out

I would just go for 3k all around and taking it from there .

SiR_Dave · #**288** 22-04-2014

I have tried 5k in both and did not like it ... so thats when I went to the 7kF, 3kR...Going to test the 10* hubs tonight and have another 5k diff ready to try out... but the 511 body is still very neutral

.. Might try the Bulldog one I have tried out the other stuff... but it's getting pretty good now ... just making it drive neutral and safe... I have a pretty good set up thats close for a starting point on Clay.. so.. might have to post it up soon

guinness · #**289** 22-04-2014

My kit is coming tomorrow, I'm looking forward to the build and to test it ,I only race on carpet so I will share my opinions as soon as possible.
I will definitely start with the 3k all around and going up on the front only if I have plenty of turn in in the first place

SiR_Dave · #**290** 22-04-2014

You might want to start with a 511 carpet set up or base it somewhat closely to it

.. . Also any info on carpet would be good as well...

.. but the 503 seems to have a lot more flex built into it than the TRF511...

pugs · #**291** 22-04-2014

I used ball diffs on carpet/slippy floor and liked it better than the gear diffs, also on grass and again found it better to drive and that was after trying several different oils in both front and rear. the car had loads of turn in and no "snappyness" you tend to get with the gear diffs....just to throw some more options in the mix....

kentech · #**292** 23-04-2014

From the latest RC World mag of Satoshi Maezumi's TRF503 including setup.

For the rest check http://kentech.blogs.se/

fastinfastout · #**293** 23-04-2014

Quote:

Originally Posted by pugs

I used ball diffs on carpet/slippy floor and liked it better than the gear diffs, also on grass and again found it better to drive and that was after trying several different oils in both front and rear. the car had loads of turn in and no "snappyness" you tend to get with the gear diffs....just to throw some more options in the mix....

I also liked ball diffs over gear diffs too, but on my 511. There was just some inconsistencies with the gear diffs on medium traction dirt tracks, and just was not sure what the car would do from corner to corner.

I would gather the only area where the gear diff 'may' be better would be on high grip astro.

do you know the part number for the ball diffs by any chance?

SiR_Dave · #**294** 23-04-2014

Here are the 39T ball diff part#'s

13700123 39T Ball diff gear
19804676 Diff joints L&R
51442 trf 417 diff plates

guinness · #**295** 23-04-2014

Trying hard to read that setup sheet lol

SiR_Dave · #**296** 23-04-2014

I can read Japanese... what are you trying to figure out ..

guinness · #**297** 23-04-2014

Everything lol ,can you make a new PDF with all the translations ?

pugs · #**298** 23-04-2014

Quote:

Originally Posted by fastinfastout

I also liked ball diffs over gear diffs too, but on my 511. There was just some inconsistencies with the gear diffs on medium traction dirt tracks, and just was not sure what the car would do from corner to corner.

I would gather the only area where the gear diff 'may' be better would be on high grip astro.

do you know the part number for the ball diffs by any chance?

Then you will like the 503 with ball diffs

just imagine a better and more balanced 511 and thats what you get....Sir dave has kindly given you the part numbers

SiR_Dave · #**299** 23-04-2014

Sure... PM my your e-mail address and I can send it your way..

SiR_Dave · #**300** 24-04-2014

OK from what I could read and understand on the RC World Article on Satoshi's 503 setting advice... he was just basically talking about basic roll center adjustments and some of the new features like the upper and lower decks with being able to feel small adjustments made to the TRF503 vice the past TRF511 with other things that will increase cornering speed.. . Stuff most of us should know already

but what I did pull from it that was interesting.. was that he was recommending using a lighter weight oil in the front compared to the rear if you wanted more steering..??

so say using 3000K in the front and 5000K in the rear if you want more steering.. and there was a few things for the diffs on Astroturf and Carpet... recommending going to 7000K~10000K in the front and a somewhere in between for the rear diff

Now he also said that if the rear feels too locked in and your not getting enough cornering speed to try out the 1* deg rear hubs and flip them around to make 2.3* rear toe in..