Build Thread Warby's Traxxas Nitro Sport Pro restoration

[Warby]

Bought more traxxas bling

 

[Warby]

I'm back again.

Another pile of packages waiting for me when I got home.

Which contained:

And the heart of the build. The little donk:

 

[Warby]

So shiny and new

 

[Warby]

I decided to start at the rear end. The gearbox, diff and rear tower.

Disassemble of gearbox:

 

[Warby]

I don't think I mentioned that I found an optional Pro-style ball bearing diff 4420 kit. It's adjustable. I'm not going to race this rig, obviously, but thought why not.

Assembly of pro diff:

The kit came with these 2 screws. I have no idea what their for. They're not mentioned in the instructions or in the diagrams. They are not even the same.

Pro and standard diff:

 

[Warby]

Assembling gearbox with new bearings, shims, diff and idler gear:

Fitted the optional hardened steel output yokes 4628X and half shafts:

I didn't use the supplied grub screws. Instead used the threaded pins shown above.

 

[Warby]

Gearbox installed with support, shock tower, upper links and new screws. I'm fitting new screw wherever possible on this build.

 

[Warby]

Time for the brake and slipper clutch.

The spur and pegs have had minimal run time. Still like new. I replaced them before the engine dead years ago. It's a 72t spur. Og was 70t. I had been running the larger tyres so 72t more suited for them. I'm going to fit it anyway as that's all I got at the moment.

Brake:

Slipper clutch/spur:

 

[WickedFog]

This is going to look so cool seeing this brought back to life!

 

[Warby]

This is going to look so cool seeing this brought back the life!

I'll feel a lot better knowing its back in good condition. I felt bad having it sat on the shelf for so long in poor, neglected condition.

I've just done a few more parts orders for it. Found more of the optional parts.

I'm actually looking forward to the second, spare parts build too. And running it.

 

[WickedFog]

I'll feel a lot better knowing its back in good condition. I felt bad having it sat on the shelf for so long in poor, neglected condition.

I've just done a few more parts orders for it. Found more of the optional parts.

I'm actually looking forward to the second, spare parts build too. And running it.

I have restored just a few RC's over the years. They were all the most rewarding when finished. Especially after gathering all the parts for a long time.

 

[Warby]

New flywheel fitted to the new motor. Reusing the old clutch shoes. Waiting for new clutch bell as the old one is rusty.

Removed pull start. I'll use that on the second build.

 

[CertifiedMike]

Looking good!!! Be sure to keep that ball diff adjusted right and you'll love it!!! Awesome find!!!

 

[Warby]

The rear suspension arms next. Although, I don't have all the new parts needed.

Exploded:

The old inner hinge pins were bent and rusted. Had to use a hammer and punch to remove them.

Cleaning the pin holes with the wife's straw brush

The arms are still in great condition. Not bent and pin holes still round.

New Aluminium axle carriers, bearings and pins:

I'm waiting for the stub axles and aluminium suspension arm mounts.

 

[Warby]

I'm having fun with these small e-clips. NOT.

 

[Warby]

And I apologise for all the bad lighting in all the photos.

 

[Warby]

I'm a bit confused with this one. Hopefully one of you old traxxas guru's can enlighten me.

I started assembling the new optional aluminium shocks I purchased.

TRAXXAS 4760: Shocks, Long, front (hard-anodized & PTFE-coated T6 aluminum) w/o spring
TRAXXAS 4761: Shocks, X-long rear (hard-anodized & PTFE-coated T6 aluminum) w/o spring

Note that they don't come with springs.

The original standard Shocks are the "Ultra shocks" which are the plastic housing shocks:

3760 front shocks, 2458 front springs
3762 rear shocks, 4457 rear springs


There is no listing for springs for the optional aluminium shocks, so I presumed the Ultra plastic shock springs would fit the aluminium shocks. I was wrong. They don't. They are too big in inside diameter. But I can't see what springs to use on the aluminium shocks.

So my questions are:

• What springs fit the aluminium shocks?
• Should I have purchased the other optional shocks, the Pro-level Big-bore shocks instead?
• Or do I use the spring and retainers(perch) from the plastic shocks, on the aluminium shocks?

Here's the listings:

@WickedFog @Chubaka @Beer_Goggles_RC
@9x19

 

[CertifiedMike]

They look like the smaller diameter springs on my Optima Mid or an old school RC10 . I have the springs you're talking about too and yeah, too big.

 

[WickedFog]

I'm a bit confused with this one. Hopefully one of you old traxxas guru's can enlighten me.

I started assembling the new optional aluminium shocks I purchased.

TRAXXAS 4760: Shocks, Long, front (hard-anodized & PTFE-coated T6 aluminum) w/o spring
TRAXXAS 4761: Shocks, X-long rear (hard-anodized & PTFE-coated T6 aluminum) w/o spring

Note that they don't come with springs.
View attachment 226753


The original standard Shocks are the "Ultra shocks" which are the plastic housing shocks:

3760 front shocks, 2458 front springs
3762 rear shocks, 4457 rear springs


There is no listing for springs for the optional aluminium shocks, so I presumed the Ultra plastic shock springs would fit the aluminium shocks. I was wrong. They don't. They are too big in inside diameter. But I can't see what springs to use on the aluminium shocks.

So my questions are:

• What springs fit the aluminium shocks?
• Should I have purchased the other optional shocks, the Pro-level Big-bore shocks instead?
• Or do I use the spring and retainers(perch) from the plastic shocks, on the aluminium shocks?

Here's the listings:
View attachment 226764
View attachment 226757


@WickedFog @Chubaka @Beer_Goggles_RC
@9x19

That appears to be a complete mystery. I put the question to Traxxas. Will let you know if I hear back anything.

 

[Warby]

That appears to be a complete mystery. I put the question to Traxxas. Will let you know if I hear back anything.

Why, thank you sir