ZDZ180B2-J champion

[Spats]

Strength is not an issue as Terry say's as long as you use fender washers. I also drill a 1/8" hole next to the engine bolt hole and epoxy a dowel in it to keep the wood from crushing under pressure from tightening the bolts. I have also found the engine has a better atmospheric pressure with the carb in the fuse so transition is smooth.

 

[Flyrcjoe]

I have some questions about the rear carb. An engine this size does it weaken the firewall cutting a hole that size for the carb? Are you guys cutting holes in the fuselage for needle adjustment?

Yes you do have to cut a hole in the firewall. Yes @Terryscustoms and @Spats are right on with using the fender washers and the dowl trick. In my opinion you should be doing that to any motor. My wife was out back helping me toon and she actually commented on how nice it is that I am very clear of the prop as I am tooning it. Unlike bottom carbs where your hand has to be right next to the prop, with the rear carb your hand is at a safer distance from the prop.

 

[Flyrcjoe]

There was a guy on the other site years ago when the Super 80 came out and he tested pipes and the power output was incredible on that particular size engine.
I had one on a Pitts muffler in a Wildhare 40% Giles and it was also unreal power.

I bet that was **** Hansen out of Utah. He was the person that first introduced me to ZDZ and he did a ton of testing. These motors have incredible power with both tuned pipes and Pitts mufflers.

 

[bigblueswope]

Yes you do have to cut a hole in the firewall. Yes @Terryscustoms and @Spats Unlike bottom carbs where your hand has to be right next to the prop, with the rear carb your hand is at a safer distance from the prop.

Still way to close for me. I shut it down any time I need to turn a needle.


BJ Swope

 

[Terryscustom]

Still way to close for me. I shut it down any time I need to turn a needle.
BJ Swope

It's actually quite different. With the 112 you are 8-10" from the prop. I hated the thought of drilling holes in the top of the cowl but I installed staws that aim the screwdriver at the needles which makes it stuper easy.

 

[dhal22]

It's actually quite different. With the 112 you are 8-10" from the prop. I hated the thought of drilling holes in the top of the cowl but I installed staws that aim the screwdriver at the needles which makes it stuper easy.

Photos please.

 

[Jetpainter]

Second flight of the ZDZ 180 in the Comp Arf yak

Nice!
A lot of people don't like the skin hinge squeal that the non center hinged Comp ARF's make. I always thought it sounded kind of cool myself. I do wish I had a dollar for all the times someone has told me that there is something wrong with my airplane after a flight because of it.

 

[Flyrcjoe]

Nice!
A lot of people don't like the skin hinge squeal that the non center hinged Comp ARF's make. I always thought it sounded kind of cool myself. I do wish I had a dollar for all the times someone has told me that there is something wrong with my airplane after a flight because of it.

The reason I love the old comp-arf. It is funny how many people come up and say what was that.

 

[Terryscustom]

If I could make all my planes do air burnouts, I would!

Started cutting form for my new 180cc bird, I have high expectations for this perdy little monster (the ZDZ180, no my plane or @thelaw)

 

[dhal22]

Nice work shop.