Recent content by Amp Eater

My lanky / wide stance 4 stroke rigger had no issues with prop walk / pure 3 point no ramp. Given the hull design I had to try a few prop sizes before getting a handle on what the OS Alpha .52a does well with. Once the needed thrust was obtained the rest of the power went to pitch. The fuel...

Saito 180 has a 8x1.25 mm thread This is steel and heavy made for the OS 81VR, should allow the engine to idle, given the additional mass of the drive line and prop. You have to be prepared to buy worldwide for certain parts desired. OS ENGINES FLYWHEEL NO 7 81VR-M ABC - 71805400 6.5oz mass...

Saito 180 - 11k will need as an example ABC 3418 / 3.4"x1.8" for 6.12" total pitch. 55 - 60 mph

Craig, a 180 project is doable, Part of the fun is paving your way to make it happen. Tyler, the flywheel I used is aluminum see pic. of parts / data. Also did not go with the venturi extension. Look forward to your results / vid if able. I am subscribed to your YouTube. My rigger has no...

No flow measurements Tyler, is this for a boat / what is the game plan? I did the break in with the engine in the boat - flywheel / drive line / prop mass - AC set at 67F 4 - 4.5 turns out with a low throttle start will be a safe bet given the load. In the last vid the engine was within 4...

OS Alpha .56a / 44 mph per radar

Android app settings for 2 and 4 stroke engines. https://play.google.com/store/apps/details?id=com.javiery.rpmgauge&hl=en Readings taken only from right to left as it passed by the camera. Note most of your passes started off with lower rpm midway in the run went up 25k to 26.5k range. Last...

Best pass at the end 27,858 rpm

Do you have a photo of the Blade Runner? The other post is not showing the photo anymore .

Since we make right turns put the header / pipe on the left side. The oil spray clears the hull more often  such as in turns the centrifugal force will sling it away. 

That checks out as early in the vid I noted peak rpm. If 15% slip 86.8 mph / total pitch 3.42" / average Doppler before and after camera mic 34,358 rpm. Many passes all in the 33.6k + range.

Any radar on this one? Best pass: 34,560 coming at the camera and 34,157 rpm going away per Doppler App.

Could try a FM radio as option B.

Here are the two side by side for reference.

Yes it's good that you can document the run with a video a rare chance to see this vintage design run in 2018. Those are old servos the wiper blade style pots get corrosion over the years may give you trouble did you change them out?