RCMK RZ254 EVO

Scott created the topic: RCMK RZ254 EVO

This thread discusses the Content article: RCMK RZ254 EVO

Figured it would be time to include a few things to change up / address for those who may find the factory set-up a tad lacking.
Simple enough adjustments or alterations so the final use is a bit more user friendly.


Before you mount carb and install the mounts .... twist the fuel fitting, notch the cases a tad and if needed trim a bit of plastic on the starter housing.


2 stroke Engine Tech of 30+ years, Prop tweeker, Chronic tinkerholic, Home of Motor Heads RC Racing Engines ...
8 time NAMBA National 6 lap heat racing record holder.
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Scott replied the topic: Re:RCMK RZ254 EVO

Next which is preventative having trapped water causing unwanted corrosion .... drill a water drain hole in the bottom case area under starter.


2 stroke Engine Tech of 30+ years, Prop tweeker, Chronic tinkerholic, Home of Motor Heads RC Racing Engines ...
8 time NAMBA National 6 lap heat racing record holder.
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Scott replied the topic: Re:RCMK RZ254 EVO

Bottom view ...

2 stroke Engine Tech of 30+ years, Prop tweeker, Chronic tinkerholic, Home of Motor Heads RC Racing Engines ...
8 time NAMBA National 6 lap heat racing record holder.
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andym replied the topic: Re:RCMK RZ254 EVO

Good idea, I have just fitted a modded piston and modded 257 carb from Gizmo as well as a NFS 2 stage 1" band steel pipe. Different motor by far spins up so quick and can take a 1475 modded to well over 19000 rpm
#9060

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rebar replied the topic: Re:RCMK RZ254 EVO

Good tips. And a well written review. Thanks Scott.

Hows the rigger lookin?
#9154

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marc replied the topic: RCMK RZ254 EVO

Product Review Article... by Scott Schneider
Our review of the new RCMK RZ254 Evo - Rear Exhaust engine...
http://www.modelgasboats.com/Magazine_Content/Engines_and_Accessories/RCMK_RZ254_EVO/

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Scott replied the topic: RE: RCMK RZ254 EVO

rebar wrote: Good tips. And a well written review. Thanks Scott.

Hows the rigger lookin?


Getting there ... stalled out now with the Holidays

2 stroke Engine Tech of 30+ years, Prop tweeker, Chronic tinkerholic, Home of Motor Heads RC Racing Engines ...
8 time NAMBA National 6 lap heat racing record holder.
#9356

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marc replied the topic: RE: RCMK RZ254 EVO

Looking good Scott! What are you thoughts on the pipe running over top the radio box? To me that seems like the only downside as opposed to a 90 deg header on side exhaust for a rigger. On a positive note though, it should reduce aerodynamic drag considerably. Keep us posted!

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#9363

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Scott replied the topic: RE: RCMK RZ254 EVO

Pipe heat if from a side or rear exhaust engine is really no different.
Most likely will be making a radio box cover out of G-10 laminate so it does not melt under the closeness of pipe / header.

You are right tho, Aerodynamics is a LOT cleaner as this photo shows ;)

2 stroke Engine Tech of 30+ years, Prop tweeker, Chronic tinkerholic, Home of Motor Heads RC Racing Engines ...
8 time NAMBA National 6 lap heat racing record holder.
#9372

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marc replied the topic: RE: RCMK RZ254 EVO

I was not really talking about pipe heat, so much as the fact that you have to raise the pipe every time you want to go into the box. But that's something we live with already with most 100 and 105 degree setups anyway. :) I think the cleaner aerodynamics is really worth it.

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