501X setup discussion
 

Please discuss your 501X setups / questions in here! :)

I posted this on one of the other Tamiya threads, but it seems more appropriate here.

Has anyone tried Losi springs on the 501?

My kit rear springs rub slightly on the shock bodies, and as AE springs are basically the same i assume they would too. I'd prefer to use a slightly larger diameter spring like the Losi ones but I don't know how well they'd fit on the bottom spring retainer or the adjusting collars.

Can anyone test this?

my 501x kit rear springs rub on the df03 hopup bodies they are on at the moment. and my AE ones don't rub on the 501X shocks. I will see if I can test the losi springs out for you.

did anyone go to Batley today? the reason i ask is that I believe that a 501x TQ'd.

yeah whoever was driving that 501X was on fire. I think it was their first time driving the car too, not bad. Quickest in the final too - shame the guy rolled it and only got 2nd. Awesome.

I heard that it was you Jim?

haha no it wasn't me mate. I was in the bottom 2WD final struggling! haha

It looked like your colours?

It might have been that newspaper reporter girlie? I saw her driving around with jimmys colours.

Hi Jimmy,
I noticed on rctech forums the comments you made about the inner wishbone wheelbase mod.
Was there any other setup changes to the car today?

No, no other changes yet. The secret unnamed driver did notice the lack of - I guess you'd call it pack or pressure?? in the shocks - basically landing from the big jump on the flat, the car would bounce.

This is because I used the bleed screws and took ALL the air out - meaning there was no pressure at all on full compression (the shaft would barely push its self out) so instead of the shaft slowing down at the end of the travel it would hit hard at the bottom of the body and the car would bounce.
A little bit of pressure would have slowed it down enough to stop this I think and I noticed the car got unsettled from that big jump a couple of times where richard lowes car didn't.

So - we'll fix that for next time. Other than that, it was pretty awesome.

I think that this driver who ever they are, did very well as it was the first time out and they sort of gave Richard lowe a run inside where Rich is very fast.;)

So what you are saying is the driver was good, but not the car? ;)

Cheers Chris but I ment we a little track time I think that car would do better than it did. I have not raced 4wd for a while now so I was really happy with it. Its a shame there will be not UK TEAM.

:confused: Any one got ideas on a basic set up for Tiverton? Haven't raced there in years, especially not a TAMIYA!!!! lol

Stick the kit setup on it maybe - there aren't many tracks like tiverton in the world (horse poo tracks) but the kit dirt setup should be a start. For me I'd probably use the same setup I used indoors and maybe go to the kit (slightly softer) springs, probably would work well.

Cheers, my missus has got horses, so maybe i can make a practice track!! ha ha

Jimmy,
Are you goint to update your setup sheets to include the new anti roll bars and caster block parts as discussed at kiddy?
Also....Did your mystery driver make any alterations to the setup when he kicked ass at Bury last weekend?
P.S
Photos of Kiddy look amazing....as usual :)

Yeah I am going to change the setup sheet to include the three antiroll bars - and the new hubs. Might do it tonight if I get time :)

Mystery driver changed to shortest possible wheelbase and went to next hole from inside on the shock towers (to reduce roll) - I heard it was awesome around there :)

Only because I couldn't be bothered to put my one-way diff in hehe :D

The Tamiya does seem to suit the super secret mystery driver very nicely :)

Regarding soaking up landings, it's probably a case of fine tuning the oil/piston combo. I build the shocks for my BJ4 with as little rebound as possible.

The mystery driver is........;)
Jimmy told me on Sunday who it is, but i'm not going to spoil the fun for everyone else.

My Dad has just finished an over hall on oople 501x and I have told him I had a problem with the rear dif coming loose every run. I have not stripped it down untill now but the only thing he could fine is that the spring in the thrust bearing had not been squashed like the B4 should of been. On the track I was tightening the dif every run so hopefully this will sort it out.

Woody, what do you mean by "the spring in the thrust bearing"? They are separate items, and should be on opposite sides of the differential assembly.

I've not experienced the differential working loose so quickly and I didn't squash the spring before installing it. Although, I may well give it a go now that you've mentioned it, just to be safe.

Haven't experienced the diff coming loose (squashed the spring first though), but the diff starts sounding (and feeling) like a coffee grinder after a few runs. I think it's a diff bal quality problem, same problem as the ZX5 had. Does anyone know if the Associated carbide diff balls are a direct fit ?

Sorry Jimmy, move me to the setup discussion thread !

Yes I know, I was just trying to point out what I was talking about. Yes I also think its a ball problem now due to the balls are knackered. I have put shumi ones straight in.

Okay, Woody. I'm a picky bugger at the best of times :D:rolleyes:

You could well be right about the diff. balls being the problem. I've not been using the kit ones, and as I said haven't experienced the diff. working loose....

What have you been using? This may be the hole problem.

Some ceramic (Silicon Nitride) ones from http://www.bocabearings.com.

They do metric, so you can get the correct size (3mm, I think).

Check out our site sponsor Kanzen racing also - they have some balls listed here:

http://www.kanzen-bearings.com/shop_...d&productId=23

Seamless, Jimmy, seamless.... :D ;)

lol
Just thought I would drop that in, since Kanzen approached me about helping with the 501X - so all being well Stu will be racing with some Kanzen products on his car in the near future, putting them to the test.

I've just been playing with using the shock bladders from the TRF TC shocks, in the offroad shocks and the initial results look to be quite promising, will let you guys know tomorrow how I get on.

Digging in
 

OK then guys question time here.

Raced the 501 today with a number of different drive options on it.

Oneway Standard shocks 35f AE blue spring med hole piston. 30r Ae Silver spring large hole piston. Car seemed to "dig in" on entry to corner, fine on exit jumped well. Any thoughts???

Same setup with Diff no problems with the front of the car at all.

Setup with the shock bladders used and diff awesome difference to stock shocks car was much more responsive!!

Didnt get to try the car with the shock bladders and the one-way.

Any thoughts on the issues with the front of the car.

Hmmmm, what were your shock locations ? was it a high grip track? was the car tipping or just digging right down?
on high grip I like to put the shocks in on the tower and out on the arms (to a degree - do it a step at a time) it just tends to make the car feel more settled on high grip tracks to me.

can anybody find out the 501x setup from hupo or josh numan from the cactus classic?:confused:

I'll get hupos off him after he is back

:D That will be great!! More setups the better(for me anyway!! lol)

Shock locations were front 3rd hole from outside on tower, and middle hole on the wishbones, the same for the rear of the car.

The grip was up there all day, even when it snowed for a while.

The car was defo digging in on corner entry, off power with the one way, fine on the highspeed corners with the power still on.

Just ordered 2 sets of ceramic diff balls from them. 10 minutes later I received an email that they were shipped !!! :o Talking about swift service !!! Sponsor approved Jimmy ! :D

Another question : are these the Yokomo shock shafts that fit the TRF ? :

https://www.ssl-stormerhobbies.com/c....pl?pn=YYS5S2T
and
https://www.ssl-stormerhobbies.com/c....pl?pn=YYS5M2T