Trowelfaz
Senior Heliman
Location: USA
| My dad used to own a hobby shop, so we 'experimented' a lot with different things when slow (like a .21 inboard in a 16 inch dumas boat or rocket engines on r/c cars & r/c electric boats). We did a nitrous conversion on an 1/8 scale .21 powered car about 17 years ago. Basically, we created a fogger over the carb, and had a servo channel to richen the mixture when activated. It was really wild, but was never able to get the engine to continue running after the burst. It would scream, the servo would richen the engine, it would take off, then die whist blowing the glow plug. After about 8 attempts, the engine was toasted.
We used parts from a small airplane CO2 engine. This has a refillable metal cylinder (like from a CO2 BB gun). We simply rigged up reducers to our Nitrous tank to refill the cylinder and had a servo press the trigger to release. We bent a brass tube around the card opening and drilled a few spray holes. What we really needed was a regulator.
The other cool thing we did was a simple supercharger. I machined a small enclosure with straight veins on 2 lobes and an input gear. This was driven from the spur gear from the R/C car. I can't say for sure if it really worked or not (it seemed like it worked a tiny bit), but it looked cool, especially with the functional butterfly blower scoop. |
