Turboprop BD5 1st Start-Up!

[@joshuabradshaw5270]

That is one of the coolest things I have seen in a while. Im an old C130 crew chief getting ready to build a BD5 and I have to give you a lot of respect for doing that so well!

[@oholyp]

Engine wasn't originally designed to run anywhere other than 100% RPM. It's been modified to run between 80% and 100% RPM adjustable in the cockpit. @ 80% it's burning about 16 gph, @ 100% it's around 22gph at Sea Level. Both wings are full wet wing integral fuel tanks, holds 36 gallons of JetA. Flight time will depend on taxi to take off time and altitude. Flight time estimates are between 1.5h and 3h pending altitude and burn rate...TBD...

[@timstarks1468]

It's quite a pleasure to see so Many BD'5 S flying. I worked at BEDE MICRO IN SAN JOSE In the late 70's As a airframe builder and later Chief of the TURBO HONDA WADE JAMES DRIVE VERSION. owned 2 ...finished 1 with 140 hp. Turbo Honda. It still exists rotting out At Livermore airport over an Unpaid hangar rent. With Rich Perkins...it legally belongs to STEVE CASTLE. I wanted it to go to the HILLER 5 IN OAKLAND CA. NEXT TO SETH ANDERSONS TURBO PROP.

[@SteveWrightNZ]

Turbo honda is a great engine for a plane. KZbin search boostedboiz

[@TheFordrt]

Excellent work guys. It's nice to see another 5 taking to the skies soon.

[@ronrobinson1799]

a quick question please..... did this ever get airborne??

[@MrPolczech]

Sounds Good Like a ALLISON C 20 Starting

[@txkflier]

The builder died in a car accident in 2015. The BD5T was donated to the Bede Family Foundation.

[@troymolitor3968]

Such a great video but a tragic read to find out the builder died in an auto accident.

[@brianjensen8798]

Hey man! Don't go flying that thing around without any wings on it! I heard that messes with the handling or something!

[@thomasrivers185]

hey man! please, no more doosh comments!

[@marklchristensen]

This is Fantastic, how can i learn about your set up for mine?? thanks for venturing here with Turbo prop.

[@pheenix42]

Would love to know how well she ended up performing, as I rather like the propellor versions myself!

[@inekemateman273]

Keep us updated please?

[@billbiggs8834]

What dash number APU is it based on? Solar t62T-??

[@stealhty1]

Being Turbo prop Is it going to be more Fuel efficient ? Is it going to be able to sustain 300 Mph ?

[@JasonJ400]

Nice! Were did you get the T62?

[@OzParkPilot]

Very cool mate ! Whats your thoughts on powering one with the new HKS Turbo charged motor ? Thankyou

[@prsedlac]

Wow, impressive test run. Get some hearing protection though!

[@tazaxx21]

So what engine are you using? Would love to have one of these, but wish it was 50% bigger, and 2 place. Just don't have time to spend a thousand hours building....

[@joshuabradshaw5270]

What is your estimated burn rate and range going to be? With the extra power will you be installing any extra fuel bladders/tanks?

[@61kwt]

Did you bought the plane ready to fly? or you built it as a kit by yourself?

[@oholyp]

The HKS engine looks too big and heavy for the BD5. Not to mention the power output location...would be very difficult to adapt IMO.

[@2600rOOt]

Is there a condition lever for ground and flight idle? Is it supposed to be a constant speed prop? Just curious , I didnt get a good look at the rear or cockpit. For such a small TP it seems it might be as busy as a Caravan in the cockpit. Thumbs up.

[@oholyp]

Constant speed variable pitch. Prop pitch lever inside. Speed is adjustable only from 80% to 100% N1. I'd really love to get it down to around 30% for ground operations and fuel burn...maybe one day when I can put some real R&D into it. :)

[@2600rOOt]

The other thing I was wondering, is there a need for a % shaft torque gauge with your prop and engine setup or is more just a matter of not overspeeding due to the small diameter of the prop? I will assume the engine governor has been tweaked a bit. Again good job, im just curious about your project.

[@oholyp]

It's a converted APU, fixed output speed @ 100% N1 is 6k RPM. Prop RPM is reduced by a cog belt and pulley system to around 3800~4200 RPM (I haven't put a tach on the prop to find out). No need for torque gauge, monitor EGT according to load and set %RPM target which will be 90~100% N1 during normal flying. If I could compare it to anything it'd be kinda like flying a helicopter...just for thrust instead of lift.

[@2600rOOt]

oholyp Thank you sir. I read it was a Solar 6X-XX series so it peaked my interest with the range of %N1 you were able to accomplish. I don't believe it will sustain itself much lower than what your idle is (~80%) as its simple single stage centrifugal compressor section was optimised for a particular flow rate (100%RP N1). You also took my words when comparing it to a helicopter...I can imagine you adjusting the power as you are advancing the prop to maintain prop speed, which is the origin of the torque gauge question. Sorry to take your time ...just a too cool a project. I look forward to seeing more. ;)

[@ATLRCFlyer]

Allison C-250?

[@oholyp]

Solar T62-2A1