ESE's works engine tuner

[F5 Dave]

Don't worry Scott's not usually moonshined of a Sunday.

[peewee]

but relied heavily on a closed cabal of trusted "tuners" for his advice on 2T technical detail, and none of them had any idea about actually calculating the blowdown
capability of a design.
.

slowly but surely a few are catching on. still every now and then youll see a main exh ten miles wide below the transfers. and plenty are still convinced the exh floor must be flush with piston top at bdc.

[seymour14]

Don't worry Scott's not usually moonshined of a Sunday.

He's away racing, opposite of talking...

[jasonu]

He's away racing, opposite of talking...

Bazinga!!!!!

[FastFred]

Scott was riding a borrowed bike at Mt Wellington. Jason Hearn riding a GPR bike made a touch down in the 28's and with bursts of brilliance was keeping Nathaniel very very honest, great racing. In the end it was smooth consistency that won the day for Nathaniel. Nathaniel later took the GPR for a ride and he was very impressed with it.

[seymour14]

Scott was riding a borrowed bike at Mt Wellington. Jason Hearn riding a GPR bike made a touch down in the 28's and with bursts of brilliance was keeping Nathaniel very very honest, great racing. In the end it was smooth consistency that won the day for Nathaniel. Nathaniel later took the GPR for a ride and he was very impressed with it.

The racing looks fantastic on the Auckland facebook, lots going on midpack as well.

[oldjohnno]

Does that model have brass floats ? Punctured ?

Rig the carbs up, off the bike, with a test tank and see if they dribble in running attitude.

Floats were OK. Turns out I'd failed to notice that in 2 of the carbs the little pin that registers in the keyway of the needle jet was missing. Fuel was travelling through the hole, up the annulus around the needle jet and out via the emulsion hole. Like an extra main jet.

Time for new glasses, obviously.

[Nath88]

Update to the redesign of my build, made some radiator guards that include mounting points for the fuel system, which is held in place with 3D printed rubber parts and zip ties. Fuel system now has a pressure damper, 20cc of air in a CO2 canister. Turns out CO2 canister threads are the same as some brake lines. Just need to bend the hard line around the front of the frame between pump and filter. Will be making noise again this week, hopefully more reliably.

Also added a pressure take off in the pipe near the exhaust port, should give a better signal for tuning than from the PV vent hose.

[husaberg]

Update to the redesign of my build, made some radiator guards that include mounting points for the fuel system, which is held in place with 3D printed rubber parts and zip ties. Fuel system now has a pressure damper, 20cc of air in a CO2 canister. Turns out CO2 canister threads are the same as some brake lines. Just need to bend the hard line around the front of the frame between pump and filter. Will be making noise again this week, hopefully more reliably.

Also added a pressure take off in the pipe near the exhaust port, should give a better signal for tuning than from the PV vent hose.

Likely BSP ,is what a lot of Industry thread are.
British Standard Pipe.

[mr bucketracer]

Scott was riding a borrowed bike at Mt Wellington. Jason Hearn riding a GPR bike made a touch down in the 28's and with bursts of brilliance was keeping Nathaniel very very honest, great racing. In the end it was smooth consistency that won the day for Nathaniel. Nathaniel later took the GPR for a ride and he was very impressed with it.

it was won on the start but race 2 jase realy was all over nat , great race from both

[TZ350]

My engine runs a 20mm alloy spacer in the header. Encouraged by 1948rod and Jamathi's comments about a water cooling an extended exhaust duct this spacer looks like a good prospect for a water cooling jacket.

[adegnes]

My engine runs a 20mm alloy spacer in the header. Encouraged by 1948rod and Jamathi's comments about a water cooling an extended exhaust duct this spacer looks like a good prospect for a water cooling jacket.

Gas engine rc boat.

[wobbly]

Getting water up to the back of the spigot works very well, I have since made the slots full depth to cool the whole duct to the end.
Having the water inlet/outlet arranged on a spigot with a pressure differential would promote flow and make the setup work even better, if you can
do this in your project.

[SwePatrick]

Just have to show you what a friend of mine is building for me.
My 212cc project needs a new crankshaft as mine is leaving things to wish for.
There will be inserts to fill up the voids.
The lower 'small' hole is for fineadjusting the balancefactor easier later on.

[mr bucketracer]

Just have to show you what a friend of mine is building for me.
My 212cc project needs a new crankshaft as mine is leaving things to wish for.
There will be inserts to fill up the voids.
The lower 'small' hole is for fineadjusting the balancefactor easier later on.

nice work! looks like you have a good mate