Reliver

@Frankster This is amazing. Thanks so much for the ideas. The shocks are the next on my hit list so will look at this.

Thanks. CC-01 looks v cool. When I have the 13.t brushless, the car does tend to take off.

Here are a couple of pics below. In essence where we are, more ground clearance is a must and the TT02b's are great builds with the kids. Big wheels give it more clearance. Unfortunately big wheels put too much strain on the drive train. This if you enlarge the wheels, there are a couple of things that really help with the car: 1. Upgrade the differential gear sets to metal. Leave the large spur plastic as a point of failure if needed as there is no slip clutch for the tt02b. Plenty of threads on this 2. Upgrade the motor to brushless if using the standard esc 3. Metal racing motor mount 4. Metal Shock towers!! Other upgrades which help {only that I have done, the guys on this forum are much better experts than me} - Turnbuckle set, better bearings, change pinion to look at different gear ratios, change dogbones [a stock plastic one broke] {see above thread}, metal driveshaft, metal cups {although one metal one broke as I moved to a 13.5 turn brushless motor, most likely due to chinesium, pay for good parts!}.

The answer was....nope. Took the cars out and the shafts/ dogbones still popped out, easily. However, I did find the cause and solution. Hats off to @TurnipJF 'Shock Towers' I had monsterised the car and this put even more stress on the towers. Initially, as the cars were quite new, this wasn't an issue. As time has passed, the stress has caused these to become weaker. Once I analysed the cars closely, I could see how they flex and thus allow for the pieces to pop out on just a tight corner. I have updated all my towers to metal and no dogbone/ shaft has dropped out since. I am still pleased to have upgraded the shafts although if you read this thread and want to stop dogbones popping out, 'Shock Towers'.

soooo....what happened. I tried 3 solutions. DF02 universals: DF03 Swing shaft: Also I tried using double O rings. Did it work?

Thanks Frankster, much appreciated. Jonathan - Thank you. I have monsterised both the tt02bs and the additional weight of the wheels in motion on the stock parts might be part of the issue, although with one I have also a turnbuckle kit which I have now shortened more to see if that helps. I have had the dogbones pop out on all areas. The DF02 cvds will be a solution on one of the cars although equally I might look at the universals you mentioned if the o ring/ washer solution doesnt work out on the other car. I will make sure I update this post with the findings as many posts dont seem to follow through with a conclusion. Thanks for the advice on the makes of parts.

Would you mind explaining this comment please?

Thanks Frankster. With one car I am going to try DF02 CVD's and the other I will try two o rings/ or the spacer advice you have given. Juggler also mentioned about shortening the shocks so will also look at that.

Thanks both. I might try a few ideas with the two cars and see what works.

Anyone have an opinion on these? {YEAH RACING G45 UNIVERSAL STEEL SWING SHAFT FOR TAMIYA DF03 TT02B - seems like a good price and potential popping dogbone soln}

Good to know. I was on Tony's store on ebay and could only find CVDs for the DF02 but at £30 for a pair. However I have bought cheap cups before and they snapped so I have also had that lesson.

Thank you. Would you recommend them? Or would the DF02 stock dogbones be a nicer alternative (if the double o ring trick doesnt work)

Thanks. I had a look around and I had a question ref: DF02 In the instructions for the DF02, the dogbones seem to both slot into grooves in the cups, but I have also seen some dogbones, that are fixed into the wheel side cup, such as here Which ones/ types are you referring to? Cheers Alun

Good to know. I seem to have a nice upgrade path now from this thread.

"I found more DF-02 parts to be the solution to the dogbone issue. The DF-02 has longer dogbones and deeper cups on the outdrives and axles, all of which makes sure the dogbones stay put, and they are a direct fit for the TT-02B." I did not know that. Brilliant. Would you recommend any particular brand or website? I have had a look and the Tamiya stock parts seem hard to come by.

Perfect. Thanks. I have the df02 gears and steering linkages. The other stock parts do seem good.

Thanks Juggular. I have ordered a bunch of o-rings and will give it a try. Currently I have stock suspension. If I was to upgrade the suspension, where is the best place to start? Simply the suspension arms? Do you have any recommended brands? Thanks Alun

Thank you. I can try that. Unfortunately it won't push the dogbone further into the cup though.

Thanks. I have one o ring on the inner cup as per the build instruction. Do you mean having another on the outer cup too?

Hi All, I was wondering if any one had any tips on this. I have seen a few other posts such as here. Nothing of a concrete solution. My kids have two tt02b's. On any kind of bump off road they seem to pop out a dogbone even if it is a very minor bump. Between the cars, I have from completely stock, to metal dog bones and a Tamiya turnbuckle kit. Both cars have issues. Is there any recommendation on a spacer to enable the dog bones to sit more comfortably? Thanks in advance Alun

Thats a very helpful reply. I might go for another tt02b then for my daughter. That also might stop arguing until one car goes faster! I will try a bigger pinion as well and see. Grest idea. I believe with stock spur I can try a 19t. Thank you.

Hi Guys I have a build that I completed with my son a few years back and you all were super helpful. Essentially it is a neo scorcher with monster wheels. I have upgraded the differentials with the DF02 metal gears and I have a tble02s esc with a Speed Passion V3.0 Competition BL 21.5T. I am looking to increase the speed now my son is very competent with it. So the questions are: If I move to a 17.5t or 13.t turn brushless motor, should I upgrade the ESC or just get a cooling fan on the current tble02s? Should I also upgrade the driveshaft to a metal one and metal spur gear? As a further question, I am looking for a next build for my daughter (5). I am thinking either another tt02b, or another build with a lot of cross over parts (DF02?) or just something else entirely, any recommendations? Thanks!

Bought my son a neo scorcher and had a hope to restore the RC car from my youth, my Marui Galaxy RS. Unfortunately I have seen parts are really hard to come by so I have decided to sell it. Hopefully will be able to use the funds to get a car for my daughter. I have posted it on ebay but I thought I would make a post here as someone might be interested in it to restore or for parts. Just give me a buzz if I can help anyone.

Great idea!

I saw the rc4's on ebay but only the rc6's on banggood. Manual was useful. Tnx.