Anyone know about the Fuji .05?

1/2A Nut wrote:

Published on May 30, 2015

2nd Bench Test Fuji .050 - topped out at 26,970 rpm

Added 1/4" to the pipe and leaned out a hair bit further
I am using the new mix design Cox Super Power 25%
APC 4.2 x2




Published on Jan 23, 2016

Picco P-0 .06 / .85cc APC 4.2x4
26,570 rpm / 101mph static - Muffler from Mecoa Fuji engine.
AP .09 carb used. 20% nitro / castor / synthetic mix
Run up after 2.5oz break in time. Will be used with a 1/2A Profi tuned pipe.

I am familiar with both of those engines, and I am curious to know what modifications were made to the Fuji to produce those numbers? Thanks, Andy

the 2 pitch prop

Fuji .050 - 26,970 rpm with a tuned pipe and APC 4.2x2 Est. 32k unloaded
23,400 rpm with a 4.2x4 with the pipe / unloaded est. 27k / 102 mph with a pylon plane
should hit 90 mph.

Picco P-0 .06 / 26,570 rpm / APC 4.2x4  / est unloaded 32.5k / plyon plane 112+ mph.
Static APC 4.2x2 / 31k  / prop pitch is too low to use.

Ken Cook wrote:            the 2 pitch prop

Ken, So you are saying, that all I have to do is put a 4X2 prop on my Fuji, and it will hit 27K? Andy

Some updates for this thread:
The Fuji prefers low weigh props with and thin airfoils 3 pitch props should
be the minimum for flying. No mods other than use a different RC carb and
tuned pipe. Key is low mass spinners I like the AP .061 spinner and a thinner
prop thrust plate. Keep the weight off the axle and don't extend it out far.
I spun down the Mecoa spinner to half its weight stock is way too bulky and
sticks out too far just loads the engine with no benefit.



Published on Jul 24, 2016
Fuji .05 with Profi tuned pipe
Best pass 36,747 rpm 157mph HQ Carbon / nylon prop 4x4.5 prop
Per audio tach brief burst rpm past camera.
Per Doppler wave analysis: 238 kmh / 147.89 mph best pass.


Prior to flight testing bench test results:



Published on Jul 16, 2016

HQ Prop 4x4.5 / Idle 9.3k rpm / 28,746 rpm / 122.4 mph
.197hp / 147w / Pipe set up per Bolly Book at {8.8in / 31k}
Awesome set up for a .05 converted car engine standard glow plug
30% Nitro / 72F room temp.

Flight test for more thrust:

Published on Jul 30, 2016
DART -Fuji .05 / Profi Tuned Pipe HQ 5x4.5N
Great top end speed with better climb good compromise.