Project: JaxFirefly   -  
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Builder Name:Jax Hammond   -  
Project:   Firefly
Total Hours:217.5
Total Expense:$23313.17
Start/Last Date:Apr 09, 2023 - No Finish Date
Engine:Hirth F33
 
Friendly URL: https://eaabuilderslog.org?s=JaxFirefly

Home or Last Project Picture

Apr 19, 2024     Engine Back From Refresh       Category: Engine
Got engine back from Bill at Oregon Aircraft Design. Cylinder head replaced with a Maximo head and redrive replaced to adapt engine from a tractor to a pusher configuration, as well as just a general refresh.


 
Mar 20, 2024     Engine Mounts - (.5 hour)       Category: Engine
Engine lord mounts received in the last week or so and hardware showed up a couple days ago. Decided to at least loosely mount the mounts with their respective hardware. Makes it look like there is a little bit of progress on the cage at least.


 
Mar 02, 2024     Engine Checkup Category: Engine
Drove about 4 hours down to Oregon Aircraft Design to drop off the engine to get looked at.
When I bought it, I was informed that it had about 5 hours on it when it was removed to upgrade to more HP. I was tentative to believe that but it was confirmed that it did in fact appear to have low hours.
It was reported that some of the seals were beginning to show their age, from sitting for a few years, so they will be getting changed out. It appears that it will also be getting an adapter plate so that it can keep both recoil and the electric start for the pusher configuration; and I also opted to have him acquire the larger cylinder head for better cooling properties. Parts have been ordered.
 
Sep 16, 2023     Engine Purchase       Category: Engine
Had a buddy of mine send me an ad for an engine I want to try to run on this little kite. After asking if it could be done by both engine maker, dealer, and a few others, I decided this was the one for me. No 90lb Rotax 447 but a 40lb Hirth F33. I wanted fuel efficiency and flight time vs 20 minutes before needing to turn around to land and refuel. I also wanted creature comforts, like a windscreen.

It is a used engine but purportedly only has 5 hours on it. Will take it to a shop and have them take a look at it to see if anything needs to be replaced, and how to actually use it. Should have it some time this week.


 


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