New ZDZ-80
11-20-2006, 12:45 AM
#527
Senior Member
Join Date: Aug 2005
Location: Odense, DENMARK
Posts: 184
Likes: 0
Received 0 Likes
on
0 Posts
RE: New ZDZ-80
Well why did I not use my tuned piped, first it is stille in use with my second 80RV-J in my Laser 200 33%, second there are not space for it beneath the wing tube ! that the main reason.
Plane comes in at 11 kg's (24 1/4lbs) fully tanked readyto fly.
RPM's 6100 with Mejzlik 26x12.
brgds
Joen
Plane comes in at 11 kg's (24 1/4lbs) fully tanked readyto fly.
RPM's 6100 with Mejzlik 26x12.
brgds
Joen
11-26-2006, 07:12 AM
#528
Member
Join Date: Oct 2004
Location: Stockholm, SWEDEN
Posts: 88
Likes: 0
Received 0 Likes
on
0 Posts
RE: New ZDZ-80
Fired mine up for the first time today. Quite easy to start if you are familiar with the zdz syndrome. Shocked like hell in the beginning, before I leaned the low end. On the second tank I was able to hit 6k on a menz s 26x10, when I bumped the throttle. I'm using the new supersonic pitts, and was expecting a little bit more. But it will hopefully gain some rpm after it has been broken in. One thing that struck me was that it is not as sensitive on the needles as my other zdz's are. Is this a Tiltsson vs Wallbro thing? what's your tach readings with a similar setup? What can i expect?
11-27-2006, 08:38 PM
#531
My Feedback: (5)
Join Date: Nov 2002
Location: MississaugaON, CANADA
Posts: 211
Likes: 0
Received 0 Likes
on
0 Posts
RE: New ZDZ-80
I will be mounting my NIB ZDZ Super 80 in a TOC/AM 33% Yak 54 and was wondering what size of a cannister do I need. I was looking at MTW and KS but will take other suggestions as well.
Also anybody run a 3-blade prop on this yet? Whose and what size? Obviously for breakin I will use a 2 blade but would really like a three blade for the Yak! What 2 blade props are you using for breakin?
Thanking you in advance.
Jim "Yakov" Daly
Also anybody run a 3-blade prop on this yet? Whose and what size? Obviously for breakin I will use a 2 blade but would really like a three blade for the Yak! What 2 blade props are you using for breakin?
Thanking you in advance.
Jim "Yakov" Daly
12-23-2006, 08:11 AM
#532
Junior Member
Join Date: Feb 2006
Location: , SOUTH AFRICA
Posts: 9
Likes: 0
Received 0 Likes
on
0 Posts
RE: New ZDZ-80
hi Guys
Thanks for all 20 pages of info.
Im running a WH giles G-202, with pitts muffler, by the coast.
Ran a mentz 26X10 ran great, and with a small accident broke the prop. got a mentz 27X10 to see how it will perform.
Needles to say i was very disapointed. could only get 5500rpm, looks like you need canisters for that size!!
Now i have one question, what is better??
mentz 26x10 or mejlik 26x10
thanks for all the info.
cheers
Thanks for all 20 pages of info.
Im running a WH giles G-202, with pitts muffler, by the coast.
Ran a mentz 26X10 ran great, and with a small accident broke the prop. got a mentz 27X10 to see how it will perform.
Needles to say i was very disapointed. could only get 5500rpm, looks like you need canisters for that size!!
Now i have one question, what is better??
mentz 26x10 or mejlik 26x10
thanks for all the info.
cheers
12-23-2006, 08:19 AM
#533
Senior Member
Join Date: Dec 2002
Location: ,
QC, CANADA
Posts: 1,083
Likes: 0
Received 0 Likes
on
0 Posts
RE: New ZDZ-80
The Mejzlik will turn 300-400 RPM faster than the MenzS. Throttle response is better with the MenzS but thrust seems better with the Mejzlik. Speed is way better with the Mejzlik (probably only because it turns faster) so it makes for a very good IMAC prop. For strictly 3D, I still prefer the Mejzlik, it just out pulls the MenzS. The only drawback is spool up time with the Mejzlik which is not that bad BTW.
That said, my experience is with the 80 RV, not the super. I understand the super can spin the MenzS with some authority.
That said, my experience is with the 80 RV, not the super. I understand the super can spin the MenzS with some authority.
12-23-2006, 08:36 AM
#534
Senior Member
My Feedback: (17)
Join Date: Jul 2003
Location: Boisbriand,
QC, CANADA
Posts: 1,592
Likes: 0
Received 0 Likes
on
0 Posts
RE: New ZDZ-80
I will be mounting my NIB ZDZ Super 80 in a TOC/AM 33% Yak 54 and was wondering what size of a cannister do I need. I was looking at MTW and KS but will take other suggestions as well.
Also anybody run a 3-blade prop on this yet? Whose and what size? Obviously for breakin I will use a 2 blade but would really like a three blade for the Yak! What 2 blade props are you using for breakin?
Thanking you in advance.
Also anybody run a 3-blade prop on this yet? Whose and what size? Obviously for breakin I will use a 2 blade but would really like a three blade for the Yak! What 2 blade props are you using for breakin?
Thanking you in advance.
Daniel
12-23-2006, 12:49 PM
#537
Senior Member
Join Date: Aug 2005
Location: Odense, DENMARK
Posts: 184
Likes: 0
Received 0 Likes
on
0 Posts
RE: New ZDZ-80
Hi Scou
Your not afraid of having to small canister?
After some fine tuning my reliable super 80 pulls mejzlik 26x12 with clean 6200 static! that's not bad at all, I'm using KS 95 engine runs great nice idling great torque.
merry christmas
Joen
Your not afraid of having to small canister?
After some fine tuning my reliable super 80 pulls mejzlik 26x12 with clean 6200 static! that's not bad at all, I'm using KS 95 engine runs great nice idling great torque.
merry christmas
Joen
01-07-2007, 08:27 AM
#538
Member
Join Date: Oct 2004
Location: Stockholm, SWEDEN
Posts: 88
Likes: 0
Received 0 Likes
on
0 Posts
RE: New ZDZ-80
Got mine airborn today for the first time. After some fine tuning, its spinning a Menz S 26x10 at 6300 cold, and 7430 in the air using the new slimline pitts, which is more noisy then the latest Iron Maiden concert that I attended. Starting it is a breeze, much easier then my zdz50ng. The only problem so far is that it wants to quit in the transition from roll to flat spin. To lean on the low end maybe??
01-12-2007, 03:30 AM
#539
Member
Join Date: Oct 2004
Location: Stockholm, SWEDEN
Posts: 88
Likes: 0
Received 0 Likes
on
0 Posts
RE: New ZDZ-80
My engine is mounted in a GP CAP, which weigh in at 26,2 lbs. The performance is quite good, but not ballistic as you might expect. My question for you (Dick H) is: Approx how much will I gain in performance if I replace my slimline pitts (which is swinging a Menz s 26x10 at 6300 cold) for a KS 1090 tuned pipe?
01-12-2007, 08:11 AM
#540
Senior Member
My Feedback: (17)
Join Date: Jul 2003
Location: Boisbriand,
QC, CANADA
Posts: 1,592
Likes: 0
Received 0 Likes
on
0 Posts
RE: New ZDZ-80
Hi Scou
Your not afraid of having to small canister?
After some fine tuning my reliable super 80 pulls mejzlik 26x12 with clean 6200 static! that's not bad at all, I'm using KS 95 engine runs great nice idling great torque.
merry christmas
Joen
Your not afraid of having to small canister?
After some fine tuning my reliable super 80 pulls mejzlik 26x12 with clean 6200 static! that's not bad at all, I'm using KS 95 engine runs great nice idling great torque.
merry christmas
Joen
The KS-95 is to big to fit into my Yak canister tunnel but if my calculations are not to off, the BMB can has more volume than KS-95.
I already have the KS-95 on my 33 % Extra and i prefer to let the motor spin above 6500 RPM static. Just my personnel preferences and noise is not an issue here.In fact, the BMB 70XL canister has 15% more ''volume'' than KS-95.
The BMB is smaller in diameter but longer and it's tuned for very short header. 13 cm
V=pi*R^2*L
My engine is mounted in a GP CAP, which weigh in at 26,2 lbs. The performance is quite good, but not ballistic as you might expect. My question for you (Dick H) is: Approx how much will I gain in performance if I replace my slimline pitts (which is swinging a Menz s 26x10 at 6300 cold) for a KS 1090 tuned pipe?
Daniel
01-12-2007, 10:09 AM
#541
RE: New ZDZ-80
The Great Planes Paint Splat CAP?
I have both the Cap from H9 and I just did a Great planes Cap -both called 33%
Somebody is using a rubber measuring stick.
The GP is far larger and even with a 100CC is just a average flyer. Up here - a VERY average flyer.
So _ The 1090 pipe is a good idea except that thingis huge _ I have KS 1090/1080 and AMT105.
The 1090 is slated for tests very soon but based on results published by UlrichAmelung - this size type is the way to go for more torque at lower rpms.
I have an 80J in an EDGE 33%
The muffler first run - the new Supersonic - almost zero rpm losses over open stack. On ZM 26x10 7200-8400 prm static and level flight
so this setup unloads easily (no backpressure) and for 33% plane if you don't mind sound level - a great -simple setup
Switching to a quiet tuned full length pipe (the AMT105) and 13" header the weight came up a bit over a pound as I recall. The AMT is very well made and does not dent or burn out.
The entire power band changed-a lot . Torque came way up . allowing 27x10 Mejzlic props to turn 6600 static and 7200 in the air -again in the 33% EDGE.
This is the way I would go in the GPCAP----- increase torque at lower rpms -----
The alternative- setup is to use a canister which will alsoboost power but you should definatly try setup on a bench first .
some work very well -on larger props - some fall flat.
This setup beats most 100 cc engines.
I have both the Cap from H9 and I just did a Great planes Cap -both called 33%
Somebody is using a rubber measuring stick.
The GP is far larger and even with a 100CC is just a average flyer. Up here - a VERY average flyer.
So _ The 1090 pipe is a good idea except that thingis huge _ I have KS 1090/1080 and AMT105.
The 1090 is slated for tests very soon but based on results published by UlrichAmelung - this size type is the way to go for more torque at lower rpms.
I have an 80J in an EDGE 33%
The muffler first run - the new Supersonic - almost zero rpm losses over open stack. On ZM 26x10 7200-8400 prm static and level flight
so this setup unloads easily (no backpressure) and for 33% plane if you don't mind sound level - a great -simple setup
Switching to a quiet tuned full length pipe (the AMT105) and 13" header the weight came up a bit over a pound as I recall. The AMT is very well made and does not dent or burn out.
The entire power band changed-a lot . Torque came way up . allowing 27x10 Mejzlic props to turn 6600 static and 7200 in the air -again in the 33% EDGE.
This is the way I would go in the GPCAP----- increase torque at lower rpms -----
The alternative- setup is to use a canister which will alsoboost power but you should definatly try setup on a bench first .
some work very well -on larger props - some fall flat.
This setup beats most 100 cc engines.
01-12-2007, 01:13 PM
#542
Member
Join Date: Oct 2004
Location: Stockholm, SWEDEN
Posts: 88
Likes: 0
Received 0 Likes
on
0 Posts
RE: New ZDZ-80
ORIGINAL: dick Hanson
The Great Planes Paint Splat CAP?
I have both the Cap from H9 and I just did a Great planes Cap -both called 33%
Somebody is using a rubber measuring stick.
The GP is far larger and even with a 100CC is just a average flyer. Up here - a VERY average flyer.
So _ The 1090 pipe is a good idea except that thingis huge _ I have KS 1090/1080 and AMT105.
The 1090 is slated for tests very soon but based on results published by UlrichAmelung - this size type is the way to go for more torque at lower rpms.
I have an 80J in an EDGE 33%
The muffler first run - the new Supersonic - almost zero rpm losses over open stack. On ZM 26x10 7200-8400 prm static and level flight
so this setup unloads easily (no backpressure) and for 33% plane if you don't mind sound level - a great -simple setup
Switching to a quiet tuned full length pipe (the AMT105) and 13" header the weight came up a bit over a pound as I recall. The AMT is very well made and does not dent or burn out.
The entire power band changed-a lot . Torque came way up . allowing 27x10 Mejzlic props to turn 6600 static and 7200 in the air -again in the 33% EDGE.
This is the way I would go in the GPCAP----- increase torque at lower rpms -----
The alternative- setup is to use a canister which will alsoboost power but you should definatly try setup on a bench first .
some work very well -on larger props - some fall flat.
This setup beats most 100 cc engines.
The Great Planes Paint Splat CAP?
I have both the Cap from H9 and I just did a Great planes Cap -both called 33%
Somebody is using a rubber measuring stick.
The GP is far larger and even with a 100CC is just a average flyer. Up here - a VERY average flyer.
So _ The 1090 pipe is a good idea except that thingis huge _ I have KS 1090/1080 and AMT105.
The 1090 is slated for tests very soon but based on results published by UlrichAmelung - this size type is the way to go for more torque at lower rpms.
I have an 80J in an EDGE 33%
The muffler first run - the new Supersonic - almost zero rpm losses over open stack. On ZM 26x10 7200-8400 prm static and level flight
so this setup unloads easily (no backpressure) and for 33% plane if you don't mind sound level - a great -simple setup
Switching to a quiet tuned full length pipe (the AMT105) and 13" header the weight came up a bit over a pound as I recall. The AMT is very well made and does not dent or burn out.
The entire power band changed-a lot . Torque came way up . allowing 27x10 Mejzlic props to turn 6600 static and 7200 in the air -again in the 33% EDGE.
This is the way I would go in the GPCAP----- increase torque at lower rpms -----
The alternative- setup is to use a canister which will alsoboost power but you should definatly try setup on a bench first .
some work very well -on larger props - some fall flat.
This setup beats most 100 cc engines.
The plane is as you guessed the splat cap. Since I, so far, only have tried the Menz S 26x10, I would like to hear what your AMT setup would turn, using the same prop (an estimation is enough, if you haven't tried it)? It would make it easier for me when trying to determ the gain in "pull out power" using for exampel HP thrust, which I know is way of, but it gives me a hint about the relationship between rpm´s and thrust on the same prop. How do you measure the length of the header?
01-22-2007, 05:42 AM
#543
Senior Member
Join Date: Oct 2005
Location: , EGYPT
Posts: 125
Likes: 0
Received 0 Likes
on
0 Posts
RE: New ZDZ-80
hi Guys
I have DA 50 and 3W 106 and i am going to get a new ZDZ 80 ( the new one ) i am not asking about the power difference which shows 9.5 but i need to know from people who fly it is it a good deal like DA and the 3W or should i wait till the DA release the 85???
Thanks
AHmed
I have DA 50 and 3W 106 and i am going to get a new ZDZ 80 ( the new one ) i am not asking about the power difference which shows 9.5 but i need to know from people who fly it is it a good deal like DA and the 3W or should i wait till the DA release the 85???
Thanks
AHmed
01-22-2007, 11:24 AM
#544
RE: New ZDZ-80
Ahmed
The motor kicks butt. It is as powerful as a DA100 if you factor the weight. It pulls my 24 pound airplane to the moon, and its not even broken in yet. Im running a NX 26x10, and AMSoil at 40:1. Break it in with 32:1. It will pull right with your 3W 106, maybe just a smidgeon less.
My next plane will be a 35% 100cc plane and if you keep under 25 pounds, this thing will pull it with authority.
The motor kicks butt. It is as powerful as a DA100 if you factor the weight. It pulls my 24 pound airplane to the moon, and its not even broken in yet. Im running a NX 26x10, and AMSoil at 40:1. Break it in with 32:1. It will pull right with your 3W 106, maybe just a smidgeon less.
My next plane will be a 35% 100cc plane and if you keep under 25 pounds, this thing will pull it with authority.
01-28-2007, 04:14 AM
#546
Junior Member
Join Date: Jan 2007
Location: Bismarck,
AR
Posts: 6
Likes: 0
Received 0 Likes
on
0 Posts
RE: New ZDZ-80
If you want to know how to build a tuned exaust for your two stroke go to http://microcarproject.tripod.com/ht...ust_system.htm it will give you the equations. your long header might cause engine over heating on the bottom of the pistion. Ouch!
01-28-2007, 04:24 AM
#547
Junior Member
Join Date: Jan 2007
Location: Bismarck,
AR
Posts: 6
Likes: 0
Received 0 Likes
on
0 Posts
RE: New ZDZ-80
I think you should go to http://microcarproject.tripod.com/ht...ust_system.htm that will tell you how to make your own tuned exhaust system. and what it really does.
ORIGINAL: Maudib
Dick,
What exactly makes a tuned can "tuned" and a canister "not"?
I understand the concepts of timing the exhaust "repercussions" so that it come back and is just oging out again to help "draw" exhaust out of the engine... at least I htink that's what I understand...
But wouldn't ANY can have some level of repercussion?
Dick,
What exactly makes a tuned can "tuned" and a canister "not"?
I understand the concepts of timing the exhaust "repercussions" so that it come back and is just oging out again to help "draw" exhaust out of the engine... at least I htink that's what I understand...
But wouldn't ANY can have some level of repercussion?
01-28-2007, 07:52 AM
#548
RE: New ZDZ-80
I read that - it is the same set of ideas repeated in many books - .
The problem is that when you try to apply it -it may not work .
It is like a recipe for a "perfect pie".
Depending on the cook -the result is delicious or "Moose Sh-t Pie".
That entire explanation never mentioned pressure or temperature and how they affect the pipe .
And they really do.
A lot.
Does any can affect the exhaust?
absofukinlutly.
I have done tuned exhausts which are simply paint cans on the end of headers and they boost power . By boost -I mean torque is raised over open header power .
all that is required is for the sonic wave to get in sync with the opening/closing of the exhaust port .
The sonic wave is not the slug of the exhaust runing thru the pipe it is a sound wave
Example -when you speak to someone in a room -he hears you at the speed of sound-but the moving air which reaches you later -tho hopefully you can't feel it or smell it.
Overheating on bottom of piston?
skirt?
under the crown?
That is an idea new to me -please explain.
The problem is that when you try to apply it -it may not work .
It is like a recipe for a "perfect pie".
Depending on the cook -the result is delicious or "Moose Sh-t Pie".
That entire explanation never mentioned pressure or temperature and how they affect the pipe .
And they really do.
A lot.
Does any can affect the exhaust?
absofukinlutly.
I have done tuned exhausts which are simply paint cans on the end of headers and they boost power . By boost -I mean torque is raised over open header power .
all that is required is for the sonic wave to get in sync with the opening/closing of the exhaust port .
The sonic wave is not the slug of the exhaust runing thru the pipe it is a sound wave
Example -when you speak to someone in a room -he hears you at the speed of sound-but the moving air which reaches you later -tho hopefully you can't feel it or smell it.
Overheating on bottom of piston?
skirt?
under the crown?
That is an idea new to me -please explain.
01-31-2007, 05:56 AM
#549
Junior Member
Join Date: Jan 2007
Location: Prague, CZECH REPUBLIC
Posts: 7
Likes: 0
Received 0 Likes
on
0 Posts
RE: New ZDZ-80
I think, that ROTO 70 is a little bit better than ZDZ 80...? (http://www.rotomotor.cz)
01-31-2007, 09:37 AM
#550
Senior Member
Join Date: Jul 2002
Location: MD
Posts: 515
Likes: 0
Received 0 Likes
on
0 Posts
RE: New ZDZ-80
We sell the line of Roto engines here in the USA. The Roto 70 is a bit heavier and does not make the HP of the ZDZ 80RV, which we also distribute.
Please visit our website or call us for more details. Ask for special season pricing on the Roto 70 if you are interested in this engine.
www.rcshowcase.com
Thanks,
Please visit our website or call us for more details. Ask for special season pricing on the Roto 70 if you are interested in this engine.
www.rcshowcase.com
Thanks,