80 singles all of em

[dick hanson]

Lots of interest in these - EVO/ ZDZ/ 3W/FPE also
So if you have one of these -or all of these -or some of these -stick in yer two bits worth.
Here is a bit of info to start:
all of em are less expensive than any of the twin cyl engines
vibration levels are very low on those I have run (both early and current ZDZ) and feed back I get on th 3W says it is also very smooth (anybody?)
The EVO -so far- no feedback
All of em are intended as choices for 20-25lb scale type aerobats (33% stuff.)
OK--- anybody else?
Questions?
Feedback?

[Neogenesis]

I will say this,

Lets please keep this thread civil and keep it on topic. That being said....I'm mounting the new ZDZ 80 Super on my 33% Am Yak. I'm impressed so far, and hope to have it up and running in a few weeks if the weather lets me. I also having a friend doing the same plane, but doing the 3W 80i. So soon enough we will have a head to head comparison using same props, and the tests will be run on the same day as to keep all weather realted variables the same. It's going to be interesting to compare the 2 side by side. We plan on watching which one breaks in faster....what props they like/dislike, and of course power/RPM data off the combinations we try.


As for my ZDZ 80. I love it so far. It's extremely light, looks good and was easy to mount up. I think it's slightly larger than the 3W....but other than that I don't have any other concrete information. I'm not sure what I'm going to do for exhaust for it yet, seeing the ZDZ canister won't play nicely with my Yak, so I'm still looking in to my options. I just can't wait to fire it up!!!

As for my buddies 3W 80i.....it should be here this week if he doesn't have it already. He's going to run it on the 3W LL canister which should help it gain a few RPM's. I'll get him to post on here when it arrives.


I also own a FRE 5.8 95cc swinging a Bolly 26x10, which I think is comparabe to the old ZDZ 80. Possibly a little less on power. I have it on a H9 Sukhoi, it's a hell of a engine. I haven't tached it to get any RPM's off it "I only put 20 or so flight on it", but it'll yank that Suk something unreal. It is VERY smooth and if you want to save a couple of bucks, it is a GREAT alternative to the other 80cc class engines. It's easy starting and very reliable. I'm running their standard exhaust which can be a bit loud at WOT, but since we don't have any noise restrictions, and nobody complains, I don't worry about it.



Neo Out!!!!

[rcflyguy]

Yes, My 33% Yak and my 3W80xi will be here on tuesday! yes Valetines day! I best get some flowers for the wife, if I want to build this thing!

Any how... Neo and I are really looking foward to the DUEL OF THE 80'S. I'm thinking that they are going to be so close that we may only see slight diff in both... with each besting the other in certain areas.

Bobby at cactus gave me some numbers on props that I will need to see to belive... so I will not repeat them, untill we have tested them.

Now, any Ideas on how we can test a bunch props with out spending a alot of cash? I would love to try masses of props... but... well you all know the story. Right now props are my biggest issue... I have a bolly 26-10 comming for break-in.

What about bench running them? any ideas on a stand?


later, Scott

[dick hanson]

bench running is a bit of a waste of time money and really the worst way to break in the engine
It will tho give you a shot at the best basic needle adj for the muffler you pick
We just got thru setting up a 157 -which is a twin of your single - easy starting easy to adjust - good power
best prop for power is going to be a 26 x10 -of some brand -there are huge differences in the brands -don't be too influenced by suggestions of how much prop the engine will pull- you can do all of that later - for now use something that easily runs in mid 6000 rpm range
The 3W 26x10 is likely as good a choice as any .
Make darn sure you setup some kind of soda straws or guides to allow you to adjust the carb -on the plane and with the engine running -
getting this right - doing some touch n goes and re adjusting and listening - is the best shot at getting it exactly right - just rich enough that full power on a vertical line is strongest power. The rear induction makes this easy to setup - as opposed to engines where th needles are under the engine or up front.
If you got to have a stand make it and the support very solid -I use a setup made of angle iron

[rcflyguy]

Ok,
Here are the two side by side, the 3w is 5oz more

[aerografixs]

	Quote: Originally Posted by dick hanson
	Lots of interest in these - EVO/ ZDZ/ 3W/FPE also So if you have one of these -or all of these -or some of these -stick in yer two bits worth. Here is a bit of info to start: all of em are less expensive than any of the twin cyl engines vibration levels are very low on those I have run (both early and current ZDZ) and feed back I get on th 3W says it is also very smooth (anybody?) The EVO -so far- no feedback All of em are intended as choices for 20-25lb scale type aerobats (33% stuff.) OK--- anybody else? Questions? Feedback?

Here Dick is an unbiased response from BMP Mufflers in Germany testing our EVO 80 for the mufflers they are designing for us.

Hello Jose,
i think Andreas Engel has talk about us and our new BMB exhaust system.

But before we are talk about this:
Congratulation! Your engines work very well and i have never seen an engine so smouth running with lowest vibrations. Good job!
We check your engine very short and simple:
- on ground with testequipment
- -3 degrees temperatur (but the sun was shining..)
- round about 75% water in air (hope you can understand it)
- 1050 h.p. air press
- checked max RPM after 5-7 seconds
- gasoline 1:25 (!!!)

The power from the 75ccm engine was very, very good. With 27 x 14 two blade from Andreas Engel round about 5.700 RPM and with 28 x 14 two blade a little bit over 5.300 RPM. And this with an brand new engine, where the "braek in" was not finished. This results are very good and it's mirroring exact the same from the new ZDZ 80RV J....whow!
The throttle response was perfect too, we would like to say these are "electrical engines". You feel every mm on the throttle, no hole, no hysterese or negative result.
This is for flying 3D very important and many, many engines and muffler manufacturs have big problems about that....!

[Dennis C]

	Quote: Originally Posted by rcflyguy
	Ok, Here are the two side by side, the 3w is 5oz more

Flyguy where did you get that header from thats on the 3w 80. also what plane are you putting itin.

i got my 80 yesterday also and the header bobby sent me..i dont think its going to work in my 34% chp 300. i needed a header with a kick up like you have i think.

Is it possible for you to measure the drop for me.

say like from the middle of the flange to the out let.

Thanks dennis

[JPrc]

Is the 5oz difference with or without the header? What was the total weight of the each engine and what was included. Everyone has different weights for all of these motor, just wondering which one is correct.

[Neogenesis]

That was bare motors. Engine, carb, spark plug only. No prop bolts or anything. I'm the one who actually did the weights, the ZDZ came in right on the advertised bare weight. The 3W doesn't specify, and I'm guessing their advertised weight is with ignition. So.....

ZDZ 80 RV-J - 4lbs 6oz
3W 80i - 4lbs 11oz.


I was in the same boat as you wondering who weighed what....so the fist thing rcflyguy and myself did was put them on the scales.






Neo

[JPrc]

Finally some accurate info especially since you can weigh them back to back on the same scale. I should have my 3W 80 here next week to go on the front of my 33% yak. I have plans to wear this little plane out. I have two friends that are foaming at the mouth to get some and we have affectionally named it the community bitch!

[Dennis C]

Here's the weight i got on my 3-w 80 with ign.

[rcflyguy]

Dennis,

Sorry, I didn't see you post right away... I have already bent it to fit the AM 33% yak, and I don't know how much I moved it. I got this one from Bobby also... Again sorry.

Scott