Kanai Buggy Owners!!!

[Maskale]

I have a K3 and when ever I come off a jump that gives me around 4 or more feet of air and I land on one front wheel particularly the left, the suspension compresses so far that it pulls the dog bone end out of the diff. out drive. I have set my shocks up so that the shock will run out of upward travel as soon as possible but it still does it. It is ticking me off, so what to do?

Also today I was just going to do a check up on my rear diff. cause something seemed a little stiff when I would just roll the buggy on the ground, so I decided to go with the rear, as it is the easiest to get to. The diff. housing was almost full of some kind of gray powder, it kind of looked like graphite, there was no grease left, just very dry powder. I took some pics. but for the life of me I could not figure out how to put the pics. in my gallery, so that I could post them, so I could use some help with that also. The pinion gear was a little worn but still usable and the bevel gear had no wear, so where could all the powder have come from, I was using the grease that came with the kit.

 

[Team 17]

Put a small piece of fuel tubing inside the drives and on the other side and it will stay in place.

Go to upload photos in the gallery and hit browse and open the file and hit upload and it should go from there.

 

[BSchorr]

Maskale - I had the same problem with the powdery stuff in my dif, i think maybe alittle water got in the dif housing and kinda driedup the grease, i took my difs apart and rebuilt them with oil, you should do the same before your replacing the bevel gears, it gets expensive.. as far as your dogbones, lol this is a wierd thing happening to them.... maybe your springs are to loos and your a-arm is coming up to far, but right now, I'm looking at my freinds k3 here and there is like.. no way for the dog bone to come out.. we have his shocks off, he is rebuilding them right now.. and its some wierd stuff..

 

[Maskale]

Fuel tubing in the drives? what will that do? the dog bone pulls out, i dont get the connection with the fuel tube.

I did the whole up load thing and i just could not get it to work so i ran a search here to see how others do it and i got some info, well i found that my pic was 1.2mb so i got it down to 49k and it still would not work.

 

[Team 17]

The tubing tightens the fitting of the dog bones instaed of them pushing to one side and falling out.

PM Woodie with the loading problem.

 

[BSchorr]

maskale, AIM me, name is Uber133t86 , ill post it for you, or email it to me [email protected]

 

[Maskale]

BSchorr i agree my suspension is coming up to far an pulling the dog bone out, but no matter how stiff a spring i put, if i land hard enough it will still compress to far and pull it out. right now i have blue springs on. I dont know how water could have got in, but the powder was not in the diff it self it was around it. I did take the diff apart and it was fine, but i did go ahead and clean out the old oil and replace it.

 

[GaInGrEEn]

Take the KIII shocks off and put on the KII, that is what everone is doing...

 

[BSchorr]

i think the kII is better then the kIII...lol AIM me maskale...Uber133t86

 

[Maskale]

great so for 200 less i could have got a better buggy, the k2.

what the difference between the k2 and 3 shocks.

 

[BSchorr]

Umm wow dude, my dif housing wasn't this bad, mine was like a pinch full, yours is like a hole shot glass full...lmao

 

[Maskale]

k3 diff. powder included.

hoped that worked.

hey i worked on it some more and i was abel to upload it, but how come the pic does not show, only the link.

yeah bschorr i am lol now to but it was not funny then. i was like wtf.

now that i know how to post i pick, kind of, i will take the camera to the track and take a pic when it does it again.

And if it dont do it i will "JUMP HIGHER AND DRIVE FASTER" till it does.

 

[BSchorr]

good thinkin, I'm installing titanium parts a got, shock towers, braces, etc that i got today in the mail, its lookin sexy, i need to get a nice shiny pipe to make it better, mabye the .063 or something

 

[Maskale]

Hardcore racing? for the titanium

 

[BSchorr]

yup, i think so

 

[uDi_MP7.5]

Jesus christ Maskale, what is that stuff in the diff? i'm completely lost as to what that might be, if it's the main gears grinding up, then you mustn't have shimmed them right. I don't think you would get that much dust even if you ground each of the gears fully to powder, and those gears are some of the hardest in the business, so I'm lost.

Maybe something else got grinded up, or you used some really weird crappy grease? dunno.

I suggest you replace any gears that are worn, SHIM them correctly, and use a healthy amount of Tamiya molybdenum grease to lube the main gears.

If you are signed up on rcca forums, read the last post here:
http://www.radiocontrolzone.com/forums/showthread.php?p=1475373#post1475373

As for the suspension/universal thing, it's a K3 issue, I think the solution is to limit the uptravel somehow, to stop the shock from compressing further just before the point where the universal gets pulled out. I'm sure someone with a K3 has the method on here, should be a simple fix.

Oh yeah - Team17 - fuel tubing in outdrives will do nothing, because we are talking about universals here, you can't push them more into one cup by using fueltubing since it will always be a set length from the wheel hub. That trick would only work if we had normal dogbones. Fuel tube in the uni's dogbone end's drivecup wouldn't do anything to stop the end from pulling -out-...

 

[Maskale]

u DI i read the link you posted and like you said i did have the gears a tiny tiny bit tight, cause like you said they will wear in any you will get the perfect mesh. the mesh was good on the gears, and i used the grease that came with the kit when i bought it, so it is that kyosho grease that kyosho is so proud of. but what the powder is i have no clue, the pinion gear is a bit worn, i think from running it with powder in there, that stuff was really packed in between the cogs. were do you get the grease you use. thanks for clearing up the fuel line thing, it was really throwing me for a loop i just did not get it, but yes i see how it could work on a regular dog bone, just not this type.

oh i did bag and tag the powder and took it to the lab and it did have very small traces of metal, which is understandable, but for that much powder i would not have any grears left if the powder was ground up grears

 

[uDi_MP7.5]

Yeah that dust is not from the gears, man chase it up. It's not just like dirt mixed with grease or something is it? That'd be my first suspicion. And the metal mixed into it would have been whatever it wore off the gears while it was in there.

that stock Kyosho grease is fine, I used it on my first 7.5 for the first gallon or so before i picked up a tube of the molybdenum stuff. I found the grease at my LHS, here's a link to tower if you need it.

http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXGS04&P=7

If the large ring gear is in good condition, and the bevel is a bit worn, if you think its worn enough to damage the ring gear it might be an idea to just go ahead and replace it, so you save yourself buying a ring gear later down the track.

FYI, i've never replaced a single gear in my life in either of the 7.5's I've had, so unlesss something messes with them they dont do anything funny.

Make sure all the diff case and gear box screws are tightened down well too, so nothing can get in anywhere. Even use some silicone to seal things together if you think its neccessary.

And looking at your pic, somethings been rubbing on the outer edge of the large gear too because its shiney, might want to look into what did that too, might have just been that powder whatever it was.

But yeah basically, just clean everything out, start afresh, and make sure nothing can get in next time.

 

[FlyinRazorback]

Maskale,
Here's the best way to keep your universal from popping out. Take 3-4 mm of fuel tubing or some type of plastic washer (I used little washers that came with my kit) and place them on the shock shaft. Just unscrew the mount off of the shaft, slide them on, then screw the mount back on.

Also, make sure your diff isn't shimmed to far to one side or the other.

 

[Maskale]

FlyingRB i get what your saying about the little plastic washers and i have some left over from the kit so i will put those in, thanks for that tip. About the powder I dont think anything got in there, like dirt, cause when i did take the whole rear end off it was clean where the plastic was touching the chassis, so there was a good seal there.

In general how often do you guys check/rebuid your diffs. Please dont say every gallon cause i dont want to have to be trearing my k3 down every week.