dickytim

Hi All,

I am new to RC and Nitro. I got a Nitro Rustler 2.5R with a few hop-ups. The guy I bought it off didn't know anything about RC and tried to tune it, couldn't get it to idle so sold it to me. I tried to tune it, but failed so sent it off and had it tuned. When I got it back it would sort of idle but as soon as I hit the brakes it would die. I then bought a whole heap of old rustler parts from a guy on Facebook Marketplace. It included a toasted .15 pro engine, so I pulled it apart to see if I could figure out what made it tick, and without destroying my supposedly "good" engine.

Once I had pulled the pro 156 a part and found that it wasn't mystical science behind it (I have rebuild my old LS1 v8 in the past, changed diff to LSD blah blah) I pulled down the 2.5R, which I soon found had a broken skirt on the piston. In NZ the replacement piston and skirt is about $165 and getting a Dynamite .19t Mach2 was about $15 more for more power, and a new motor. Unfortunately while chasing the tuning issue I had fully rebuilt the 2.5 carb, so thrown a bit of money away on that!

So hopefully in a couple of weeks my new engine will arrive so I can get it run in and start thrashing the Rustler again!

In the mean time I have ordered a DumboRC X6 with gyro transmitter (amazing how far technology has come) some hop-up aluminium parts, when I was learning to drive I was bending and breaking bits. All in all I am hoping to have a pretty solid and fast basher when done.

I have no double that I will have hundreds of questions once I get the first engine, the first is probably do most of you have a spare engine sitting around?

Here in NZ shipping is 2-3 weeks for most stuff unless you want to pay as much on shipping as the part costs.

Big Alice

This is from another rc forum. Lots of reading but also lots of information. https://www.rctech.net/forum/onroad-...ing-bible.html

dickytim

Thanks Alice, I'll give it a read. I have learnt heaps by troubleshooting my own engine, and the wrecked one I got with a whole lot of parts!

I learnt that the TRX pro 15 is a mongrel to get the front bearing out of!

I have just bought a second hand Kyosho One-V S3 very cheaply, and found that a piston and sleeve is $40 here in NZ compared to the Traxxas $165 also I can build a whole new engine for it for $120 with brand new parts.

Big Alice

I just put the block in the oven at 300 f for a few minutes. The bearings come out easily once the block expands. There's a lot of stuff on you tube. https://www.youtube.com/results?sear...c+nitro+engine

seedygreenute

Hey mate , Im in Oz . I have found rcboyz on ebay to have cheap shipping . Part might be $1-2 more but you save $10 or more on postage .

MargueriteFord

You are not allowed to post URLs until you have at 3 least posts

1QwkSport2.5r

I think you’re a couple years late to the party..

Big Alice

I posted the url's and I think I have enough posts to do so. Thanks for your concern.