Kyosho sandmaster 2.0

[RustyUs]

Just the part sticking out catching dirt. I figured if it didnt work it wouldn't be that hard to get new 1s. Has been no issue

I would have guessed the molding of the plastic shock bodies/pistons were a bit off and at full compression of the shocks, the pistons got stuck at the top of the shock body. That was my experience, years ago, on a set of composite shocks for my Optima mini truggy transformation... very annoying.

I had an RC platform that came with a revision part to add more squish to shock x-rings. The original shocks came with no spacer between x-rings. Just that little piece of plastic (circled below) added enough squish to the x-rings.

Maybe instead of slicing an o-ring that is squished outside of a shock, a person sanding/shaving 0.5mm, or less, material off the spacer between the o-rings would not squish the o-rings as much when the lower shock cap is tightened down all the way.

Anyways, I'm glad you got things up and running.
May you keep the dirt flying.

 

[Ritz413]

I would have guessed the molding of the plastic shock bodies/pistons were a bit off and at full compression of the shocks, the pistons got stuck at the top of the shock body. That was my experience, years ago, on a set of composite shocks for my Optima mini truggy transformation... very annoying.

I had an RC platform that came with a revision part to add more squish to shock x-rings. The original shocks came with no spacer between x-rings. Just that little piece of plastic (circled below) added enough squish to the x-rings.
View attachment 269886
Maybe instead of slicing an o-ring that is squished outside of a shock, a person sanding/shaving 0.5mm, or less, material off the spacer between the o-rings would not squish the o-rings as much when the lower shock cap is tightened down all the way.
View attachment 269887
Anyways, I'm glad you got things up and running.
May you keep the dirt flying.

Fair enough. It's a complete 10th scale for 100 bucks. I was focused on finding tweaks that would increase performance without turning it into a 500 $ car. A spacer to limit the shock from moving far enough to get stuck would also work I'm sure. The way it's currently set up has been a ton of fun. Orings are cheap, and available at the local hardware.

 

[CertifiedMike]

Fair enough. It's a complete 10th scale for 100 bucks. I was focused on finding tweaks that would increase performance without turning it into a 500 $ car. A spacer to limit the shock from moving far enough to get stuck would also work I'm sure. The way it's currently set up has been a ton of fun. Orings are cheap, and available at the local hardware.

I have been watching this thread and the coolness of these cars. They are well worth the $$$ as far as I can see!
I thino I would have a tough time being 'good'.
I would likely turn it into the $500 car in no time. I would have a blast doing it too!

 

[Ritz413]

I have been watching this thread and the coolness of these cars. They are well worth the $$$ as far as I can see!
I thino I would have a tough time being 'good'.
I would likely turn it into the $500 car in no time. I would have a blast doing it too!

Don't let me stop you. Lol. They absolutely are worth the $$ all day. After a trip or 2 with mine down to the lhs they brought them and have sold at least 3 of them. I know no one who is complaining about what they got.

 

[Ritz413]

I started making these youtube videos to be able to share things here on the forum. Today when i open up the studio to upload this video, and youtube wants to have a big celebration about reaching 10 subs....good stuff,lol. Feel free to add to that number. This is just a quick run down of various changes i have made to this car from stock. Enjoy...or dont, but maybe watch it anyway.

 

[Ritz413]

 

[CertifiedMike]

3s next huh???
I hope you make another vid for that!

It looks great running around out on the field!

 

[Ritz413]

3s next huh???
I hope you make another vid for that!

It looks great running around out on the field!

I tossed a 3s in there and tried it out in the yard here when I got home. Tough to keep the front wheels on the ground with that,lol. So I swapped in a 17t 540 and we shall go with 3s for the next run and see if I have found a nice balance between motor and voltage.

 

[CertifiedMike]

I tossed a 3s in there and tried it out in the yard here when I got home. Tough to keep the front wheels on the ground with that,lol. So I swapped in a 17t 540 and we shall go with 3s for the next run and see if I have found a nice balance between motor and voltage.

Sounds like fun! It will put your spur to the test for sure!

 

[Ritz413]

Sounds like fun! It will put your spur to the test for sure!

That's an easy fix if it causes any problems. If cheap cars like this aren't for experimental projects I don't know what is.

 

[Ritz413]

Mechanically the car held up fine yesterday, electrically the esc needs a second update. After the battery gets down about 15% you get 1 good run at full throttle and it hits turtle mode. Off/on 1 good run ...turtle. the low voltage is set at 6.8v for 2s ....and I don't believe is asjustable.

 

[CertifiedMike]

Usually turtle mode is LVC. Have you tried to plug in a programmer card? Sometimes a HW card will work for other brands.

 

[Ritz413]

Usually turtle mode is LVC. Have you tried to plug in a programmer card? Sometimes a HW card will work for other brands.

I have a few program cards I can try

 

[PaPeRo]

So this is what happens to the wheel axle cups when you use really stiff springs in combination with 90mm shocks. Kyosho doesn't sell these separately so you have to buy the whole rear hub assembly. The set costs $20 but I could buy a whole RTR kit for $90.

 

[Ritz413]

So this is what happens to the wheel axle cups when you use really stiff springs in combination with 90mm shocks. Kyosho doesn't sell these separately so you have to buy the whole rear hub assembly. The set costs $20 but I could buy a whole RTR kit for $90.

You still running the stock motor?

 

[PaPeRo]

You still running the stock motor?

Yes but upgraded the ESC to a 3S Hobbywing.

 

[PaPeRo]

Testing out some colored lighting.

 

[CertifiedMike]

So this is what happens to the wheel axle cups when you use really stiff springs in combination with 90mm shocks. Kyosho doesn't sell these separately so you have to buy the whole rear hub assembly. The set costs $20 but I could buy a whole RTR kit for $90.

How long are the dog bones? I wonder if it would be better to run CVDs or universals.

Worn parts means they didn't break and you had fun wearing them out. I suppose this could be worse!

 

[RustyUs]

So this is what happens to the wheel axle cups when you use really stiff springs in combination with 90mm shocks. Kyosho doesn't sell these separately so you have to buy the whole rear hub assembly. The set costs $20 but I could buy a whole RTR kit for $90.

You have a whole other side on those axles to use yet.

 

[PaPeRo]

You have a whole other side on those axles to use yet.

I didn't even think of that! I was going to toss them, but I'm just going to swap the L/R now.