Workshop Blog November 2024

More performance testing of goodies for the Royal Enfield Hunter 350.

Still busy trying to optimise the performance of the little Hunter 350.
So far I've found that the DNA air filter and cover gives a nice performance boost and the Delkevic down pipes also add a tiny little extra when paired with the standard silencer.
This month's task is to find out which silencer works best with the Delkevic pipe. (Because I know from testing that adding different silencers to the standard down pipe only affects the sound output! There's very little performance difference. See last month's blog for details.)

Today I've been attempting some metal spinning in the lathe to make some different end caps to test on the Supertrapp silencer.

The results of that metal spinning and part two of silencer testing on the Hunter is now available on video!
This time we're testing the silencers on the Delkevic down pipe.

Visited the garage today to find an unwelcome visitor in the form of a light coating of rust over the lathe chuck. It's been caused by our changeable weather conditions; freezing cold for 3 days followed quickly by much warmer, humid weather. As a result, condensation has formed on the chuck, which has then lead to some rust forming.
Thankfully, it's nothing more than a brisk scrub and application of ACF50 can't sort out, but it's a reminder that I need to 'winter proof' the stuff stored in the garage and shed as best I can.

Once the rust issue was sorted, it was time to get on with testing of the FuelX Pro+ on the Royal Enfield Hunter.
The unit has been installed on the bike (under the seat) connected up to the lambda sensor and the map switch located on the handlebars. It's worth noting that the clamp design requires a nice straight bit of handlebar to sit on, something that is in short supply on the Hunter's bars...
Next up was an adjustable throttle stop. The makers of FuelX claim that the biggest performance gains are at part throttle openings, so, in an attempt to test this, I've cobbled together a 3D printed adjustable stop which I'm hoping will then allow me to devise a test that the Dragy GPS performance meter can measure.