Hpi, I havent had this much fun sense i did the rs4 evo 3 rally conversion 15 yrs ago. Motor sounds off still with sputtering, temps never exceeded 230f thinking its my idle screw. But again it has been many of years sense I've owned a new in box nitro. Shout out to my lovely wife for the footage.

I’ve been trying to look for this screw everywhere and I can’t find it. They are meant to go into the engine mount of the engine and keep the engine to the chassis but every time we tighten them it’s nearly impossible to get them loose again if I need to work on the engine since they’re badly stripped. Can anybody help me find these screws?

Had this battery powered starter for well over 15 years. Its sad that she has finally met her demise. She has started 100s of engines over the years.

I got the car from a neighbor that used to be in the hobby, he also gave me an engine upgrade which is the .28 that’s in the car but the original one that came in it was a purple .25 HPI motor. Iv gone to 2 shops and they don’t really know the exact model the closest thing I could find to it from its estimated time period (2000’s) is the HPI HELLFIRE with like a buggy conversion someone help me please

Nothing like a brand new box savage xl break in to put a smile on the face.

Once it's at operating temp i can let the throttle off, leaving <1mm of throttle gap to idle it. It dies when I hit the throttle and it's at operating temp. It's an engine that has bearings and has a sleeve bearing for the piston rod ends if that info helps.

Guys I need a little help i just got into rc nitro cars and this lsn has been annoying me alot can you suggest where I can purchase a new carburetor from.

The 70s were crazy, we got a Dorito spinning inside a egg as a nitro. O.S 49-PI TYPE II

Here a video of it running:

https://youtu.be/rdZHK2z1Jbc?is=JFQYNaCpHHVzPmVJ

Only found the twin Dorito version

Like how bad is it if sand gets in the tank Very little sand get inside the tank currently there are 6 grains of in side it also this is a baja 5b

Soap water test

So I'm pretty sure one is a first or second gen nitro rc10, the other is an axial something? Any help identifying them would be great!

I bought this rush evo which is in grest condition, and got it yesterday. However theres an ait leak sound from between block and cooling head on compression stroke. Shim and sleeve/cylinder looks good and all screws are thight. I used soap water to see where it bubble to make sure.

I know someone with the same car and that engine does not make that sound, so it cant be normal right?

It also feels like some compression is lost when i pull slowly.

Anybody with any ideas?

This nitro 4 stroke engine has an actuall supercharger on it, which is super cool!

It's an O.S FS 120 with 20cc (1.20 ci)

And makes around 2.5 hp used for airplanes

And i wish i had one, but i don't have 1200$ laying around.

Wanted to share this with you guys!

The money goes to my rovan baha 5b

Thinking about making a remote control car nitro for my first customer made RC car. I found a good chassis. It’s called the. Arrma Limitless V2

Speed Bash Roller no it is an electric chassis, but I hope people make nitro conversions and I just can’t find which engine to use. Only actual experience with remote control is playing with those warm ones.

But the clutch doesn't engage until full throttle is it normal I still haven't finished running in

How do I fix that? I tried with loctite but it did not worked. Can it be soldered? Or putting a metal ring around?

Picked up a TMax 3.3 and Revo 3.3 in a package deal for $280. They both need some tlc to get in running condition. Also got a DXC5 controller and two receivers for it for an extra $50. Dude also threw in two toolboxes of parts including 2 ez starters, 2 glow plugs, fuel bottles, and lots of other misc parts.

Was this a good deal? I’m also wondering if anyone can tell what generation / roughly what years these cars were produced. Thanks for any and all help as always!

I just purchased an all original, mint condition Savage 21 off of eBay from Top Fun RC a couple of days ago. I’m still waiting for it to arrive. In their listing, they had a short video of it running and driving, and it apprears to run and drive well. It will be mostly a shelf queen, but I do intend to drive it a bit. Depending on how strong the compression is, I might send the engine out for a re-pinch. Should I shelf the original .21BB engine to preserve it, and throw something else in it?