Kyosho RB6 thread

[Neil Skull]

Try it without drag brake!
Springs seem ok to me!

[RogerM]

Drag brake is almost certainly the issue however your rear springs are very soft and if it's old fashioned wooden jumps you could find the rear of the chassis is bottoming out as it crosses the edge of the ramp kicking the back end up in the air.
Can also happen if ride height is too low.

Try taking the drag brake off first, then play with springs and ride heights.

[cornishboy176]

Originally Posted by RogerM

Drag brake is almost certainly the issue however your rear springs are very soft and if it's old fashioned wooden jumps you could find the rear of the chassis is bottoming out as it crosses the edge of the ramp kicking the back end up in the air.
Can also happen if ride height is too low.

Try taking the drag brake off first, then play with springs and ride heights.

Ideal, thanks I will try that, maybe x gear gold springs or going up to 30wt rear instead of 27.5, ride height is 20mm all round

[MHeadling]

Quick question, do AE big bore pistons fit in the kyosho BB shocks??

[discothesnake]

Hi Mark, the kyosho pistons are thicker than AE ones and wouldn't be a good fit on on the shaft. As far as I know, it's only kyosho pistons that fit. You can buy blank pistons tho if you are wanting to make
your own.

Dave

[Gayo]

They fit but you have to use a thin washer (0.1 or 0.2) to stop any play.

[MHeadling]

Thanks for the info guys, I'll get some more kyosho ones on order but needed to use the AE ones to get me by till the shops re open

[Chris-S]

Losi ones are a direct fit

[MHeadling]

I'v got a gear diff with my RB6, it's going great with the ball diff in it at the mo

Do many people run the gear diff in the RB6??

Any good starting points on oil?

[Gayo]

I tried 3000, 5000, now I have 10 000 on our high-grip astro carpet. I like the planted feel of the thicker oil, really smooth. I didn't tried any harder oil yet, will do it soon.

[MHeadling]

Thanks for the info Gayo, I normal diff oil ok in these diffs (stays in the diff!) or is better to go for a grease??

[bigt]

It'll stay in for one meet for me I use putoline racing grease most feels about 5k but lasts months

[Gayo]

Disclaimer: I am not engineer so you may find some BS on the text below

I think that you miss something when using grease on a gear diff. Oil gets kinda stiffer as the diff works harder and friction increases (this is what gives pack to the shocks), but grease stays more or less the same. You get too much diffing out and you get a bad handling car with grease on the diff, as well as too thin of an oil.

Another issue is that the Kyosho gear diff is not very well made. I have two of them and they leak like crazy! So I used some some black gasket sealant and the leaking is gone. Not very handy but Id' rather mess with sealant than get oil everywhere on the gear box but on the diff itself.

Edit: I didn't knew there were CST rated greases. I was only commenting on "normal" greases such as graphite grease.

[discostu]

mark

stick to the ball diff it is proving faster at our club just put a good set of balls and good diff grease in built it with care and attection to detail and it will last pretty well

stu

[MHeadling]

Thanks again for the feedback, when I did take a look at the diff I did think it looked a bit rtr.

I was thinking the cst rated kyosho diff greases may work in this diff.

Well my ball diff is brand new now with ceramic balls etc so will leave it in the car

[discostu]

Originally Posted by MHeadling

Thanks again for the feedback, when I did take a look at the diff I did think it looked a bit rtr.

I was thinking the cst rated kyosho diff greases may work in this diff.

Well my ball diff is brand new now with ceramic balls etc so will leave it in the car

Good call buddy

it doesnt matter too much k domination is about to end at marritime lol

[Andywoods]

Hi just wondering if anyone has tried shortys and saddles back to back in wet slippy conditions and which were best?

[RogerM]

Andy, the answer is I have yes but it's not as simple a question as that. It's about how the shorty is used too.

In the dry shorty in a RudeBits tray, no extra weight on smooth tracks, 34g under the shorty if bumpy. Car is more agile and direct than with saddles, far nicer to drive.

In the wet saddles would be better due to the weight being slightly further off the centre line and thus creating more roll which helps generate grip. You have to remember the saddles cases are empty at the last 5mm or so of each end so to get the same balance side-side you need to run them with the terminals on opposite sides to each other.

Now having said all that I don't have saddles any more and don't intend to get any more either.
This means in the wet I have to mimic their effect so to do this I use the 23g RudeBits side weights on the RudeBits tray with the weights in the rear position. I also add a 2nd 34g weight under the cells if really slippery. This makes the car feel even better than with saddles as not only is the balance side-side spot on the overall weight is slightly up and the weight bias is slightly more rearward.

I'll normally run the car identical in the wet to the dry other than resetting ride heights +1mm both ends and removing 1-2mm from under the inner ball studs front and rear.

Final point is if you want the absolute best in slippery conditions the lightweight chassis is of benefit I'm told, yet to try one myself but definitely will be getting one soon.

[danmurphy]

Is there a longer cvd bone available that will fit the rb6? With a wider rear track, the drive pin sits right at the end of the diff outdrives.

[RogerM]

65.5mm bone is the longest available from Kyosho.

Why do you want to run the rear of the car at it's widest? I normally run it slightly narrower than kit to aid rear traction.