Thanks, I'm going to get the rev 3.

Re: Re: YRX 12 hard chassis
 

Thanks for your reply.

Switch Blade: I ran the Hitec 225BB on mine for a while ~$24 stormers. Now I am running the Airtronics 94145Z. Look at the 4.8v ratting not the 6.0v as the cars are 4 cell. Mine works in the futaba R123 reciever and the XXXtra that I have. They will not work in the Futaba HRS receiver. The HRS requires digital servo's and 6.0v.

BigTbone- DaveL gave excellent advice and you may also want to see if your diff is slipping (usually the rings on the diff are slipping). The IRS big ring pinned diff will definately solve this if yours is slipping if you don't have one you would really like it.

I'm building a YRX-12WE right now, and I'm having trouble building the diff. I can't figure out how to make it smooth. I followed the directions closely. I can't put my finger on it.

-Leon

ok guys maybe you can help me....
i was at the track sunday running 12th...i have an old ae rc12lw.
it was running great, won 12th the other night, but i decided it could be better and i bought an IRS pinned diff and axle assembly and a new vcs shock kit. now the thing traction rolls in every corner! we worked on it the whole day at the track, and maybe just got slightly better but if pushed to anything beyond lazy swooping slow corners, it flips. we (as in 12th guys at the track) have tried front springs, rear springs, diff tightness, and all that, but it still flips. i would like to know your guys thoughts on how i could fix this...
one thing i noticed was that the rear axle is now a bit narrower from the old axle...about a few (3-4) mm one each side as an estimate. now that makes the whole rear 6-8 mm narrower than what it was:eek: ! could that be doin it? i put an extra axle shim on both sides to get it spaced so its back where it was but i havnt had any time to run it yet. lemme know what you guys think.

Large diff ring
 

Hi,All

Today, I found new diff ring on IRS page. IRS will release the
Large size diff ring. Someone know the difference between
existing(small) ring and large ring?

bab00n14, is it only flipping one way? (i.e. turning right) ...if so you might have your tweek screws "tweeked"

Big Diff vs. Small Diff rings
 

In my opinion, the smaller diff ring set-up is lighter, but the large diff rings build a smoother feeling diff. I prefer the large diff ring over the small diff rings anyday!!! Escpecially if they are pinned or are a D-ring so diff rings cannot slip!!!

Kiyano - good question about the new large ring differential offered by IRS. The power in 4 cell modified 1.12 scale is insane. The small ring differentials are not showing reliable, consistant ability to hold that power. Depending on the spur gear, the small rings are using either 6 or 8 balls. The large ring differential, when used with a Kimbrough spur gear, offers 12 balls on the outer ring. This combination has done very well in containing the insane power 4 cell modified is applying to the carpet. At least 7 of the A main modified drivers in Cleveland were using the IRS large ring differential. Again at the Snowbirds, I think 7 were using the IRS large ring differential. This combination lasts through the entire event on one build, not counting a crash that messes up the outer bearing. IRS products are offered in your area. Just check around and you can find them.

Darnold & David,

The axel set I have does say big diff ring. ( I got something good and don't know it) However, I am not sure how to pin it. The rings have a little notch/hole in it and the kit came with a yellow stick about 1-2 inches long but no little pin. The yellow stick is too long to place inthe diff.. What am i missing..

Thanks for the help fellas..

Mr. Bone - The yellow rod is a piece of nylon that is to be your pin. Insert it into the hub until there is some sticking out both sides and cut it off. Then do the same thing with the hub on the axle. Now place the ring on the hub or axle and trim the nylon rod to a length that is slightly shorter than the thickness of the rig, but still engages the ring so it won't rotate around the flange or the hub. Your done. Now, assemble the differential, install in the bearings of the car, install the wheels and you are ready to go. After you apply traction to the tires and wipe it off cleanly so it doesn't leave a mark on the carpet, that is.

You'll notice the diff hubs have little holes that will line up with the notches in your rings. You cut the little "stick" in half, insert half into each hub, and secure carefully with a drop of CA (from the non-ring side of the hub).

Once the CA is dry, trim the pins flush with the ring on one side and flush with the back of the hub on the other. Your rings are now pinned.

T

ummm ok. I think I got it.. I'll try it tonight..THanks so that stick can last a while huh? I think I got messed up when I looked at pin hole and saw that it could not go straight through to the other side because of the sput gear.. also now I realize that I should have put the balls in the outer ring of the gear.. or am I still confused?


dang maybe I should have stuck with sedan... Never knet such a simple looking car could be *********

ok I figures ome more thing out the yellow thing should not go all the way through should be cut flush.. Now I got it... Yeah call me slow..... :cry: