Zongshen engine replacement in a Tecnam Bravo

[Thruster88]

20 hours ago, Kiwi55 said:

Hi,

 

2 Freak failure. We had a Rotax carb heat system fitted on the engine (original factory fit). It uses a extra assy fitted to the outside of the muffler which has circular spacer rings separating the outside of the muffler from the inside  of the heater sleeve.

One of the these ring collapsed and a piece found it's way  right through the carb system into the no.1 cylinder. Not good.

 

Now the Zongshen looks attractive.

 

Are you sure that carburetor heat muff is a genuine Rotax part? The parts books I have looked at do not show one. 

 

The last Rotax 912 annual I did was a Foxbat A22. It had air cleaners inside the air box so no dirt or shrapnel can ever enter the engine regardless of hot or cold selected. Good engineering.  

 

Edited January 17, 2023 by Thruster88

[jackc]

8 hours ago, Kyle Communications said:

I think you will find a new 912ULS is around 36 to 37k here now

 

And IF you want to fly with the best reliability and confidence, then just suck it up and pay the money. 

[RFguy]

Mark- depends if you are pricing a new core, or pricing a core with accessories...

[facthunter]

Anyhow re the original question, I feel it's unlikely to inherit Certification and your plane may not be able to fly legally with it fitted unless you go EXP GA.  Nev

[RFguy]

Or swap the rocker covers over - as long as any prospective future buyer is aware....

Edited January 18, 2023 by RFguy

[facthunter]

See you  at the Court. ALL that has to be in the A/C log book. In a 19-xxxx in might be OK.  Tecnams are factory built.  Nev

[RFguy]

Even as a 19- you would need to be the original builder. But it wouldnt be quite as blatently flouting the rules.

Or as a 24-, you could get an AP ( approved person ) to sign it off and the aircraft goes Exp24. However, I dunno whether an AP would sign it off ....

 

Nev- can't go GA experimental - there is no paperwork  path for a 24- airplane to go GA experimental. I have enquired....

so- consider you may have no insurance if it gets sticky. 
Rotaxes are fine I suggest the root of the problem be found. It is possible that you are just good at winning the lottery. (chance)

Edited January 18, 2023 by RFguy

[facthunter]

Can't a Techam be registered GA.?   Anyhow my view is why go there?.  and I certainly wouldn't want to be the first to test the idea. There's enough challenges without going looking for them.

[Lucky01]

Zongshen 145hp 915 Copy?

[RFguy]

yeah they have  all the sizes 80,100,115,145..

[Blueadventures]

26 minutes ago, RFguy said:

yeah they have  all the sizes 80,100,115,145..

Drone power plants only need short life.

[jackc]

I would have to check, but CASA gave a special permit to fit a Pawnee glider tug at Benalla with a Commodore LS1 V8, permit was for 500 hours, not sure of final outcome but I was launched several times by this aircraft and it went like a rocket 🙂 

[Blueadventures]

4 minutes ago, jackc said:

I would have to check, but CASA gave a special permit to fit a Pawnee glider tug at Benalla with a Commodore LS1 V8, permit was for 500 hours, not sure of final outcome but I was launched several times by this aircraft and it went like a rocket 🙂 

Kingaroy has similar.

[facthunter]

That IS one car engine that might well be able to be put in a plane. That's been my view since it was proposed especially for tug planes or chutists.  Nev

[jackc]

Here is the info regarding LS1 V8 conversions, obviously purpose converted for glider tug use, not General Aviation.   VH-CUR was the relevant aircraft I was involved with.

 

https://www.etug.com.au/about

[johnm]

joining the coversations:

 

a tecnam bravo with a V8 ............. that'll attract some ulcers

[facthunter]

A Nice small one would be cool. Smooooth.  Nev

[Kyle Communications]

Kingaroy did the first LS1 conversion in the Pawneee..that was a long time ago too

 

[Bruce Tuncks]

I think I saw one and saw struck by how the toothed reduction rubber belt was destroying itself by running into a flange...  was this the Kingaroy Pawnee?

[facthunter]

Big job for a toothed Kevlar belt. About 250 REAL horsepower (detuned). Some drag nitro supercharger drives would be dealing with that amount, but not for long. Nev

[Bruce Tuncks]

It is the alignment of the 2 pulleys that matters. I this is not always perfect, then the belt will want to creep sideways. The old flat-belt drives had domed pulleys for this reason. They rarely stayed dead center.

[facthunter]

All true. I don't like the concept much myself but it's used in a lot of modified big bikes when dragging.  Nev

[onetrack]

The multi-ribbed V-belt has been determined to be the most satisfactory performer of all the belts to date - moving on from the old single or multiple V-belt. Multi-ribbed V-belts are thinner, take up less room, generate less heat, and offer more flexibility. The toothed belt offers the potential to reduce slippage, but the teeth often pull out of the belt under heavy load.

[facthunter]

Toothed is essential where timing is involved.  Nev

[danny_galaga]

Is it possible to fit an 'on condition' engine on a 24 rego plane?