Real world RPM

[pe reivers]

	Quote: Originally Posted by ROBNBAY
	Pe, I am running an EVO 26GX with the Karl Mueller header and the 26cc tuned pipe from Horizon. Karl includes a small piece of pipe for tuning the engine. I have no experience with doing so. Can you help or point me to some information that might be of assistance. Thanks, Rob

Look here for a quick reference
http://www.mvvs.cz/docMVVS/EN_Brief%2026-35%20info.pdf
The header length (physical size) is 6" (15 cm) If you want to run small props at rpm 9000 or higher, a shorter header of 5" will do.

[WrongWayRC]

Regarding my post #217... the guys at DA questioned those numbers and I wondered....so we got another.....more expensive tach on it yesterday and same results. I must have something working for me in the exhaust setup.

[WrongWayRC]

Torch 90cc single cylinder, AMT 105 pipe, 2.5 gallons now just switched from Lawnboy to Amsoil 50 to 1.
15 foot ASL, 80 degrees;

Vess 26A- 6900 hot
Skorepa 26x10- 7200 hot
PT carbon 26x8- 7400 hot
JC (Brazil) 26x10 7000 hot
Will try JC 27x8 next, Vess prop is ripping on uplines

Here is a recent vid when only 1.5 gallons thru.

YouTube - WrongWay Cam at the Huckfest WrongWay...

[krayzc]

7260 on a 22 x 8 Mejzlik today

Brison 3.2 and a J & H peacekeeper muffler

[WrongWayRC]

Torch 90 on 4th gallon, AMT-105 pipe,
AMSOIL in regular gas at 70-1,
60 degrees sea level,
JC Prop 27x8 at 6500 static.

To me it is enough to make the 35% plane a rag doll.

I just found out that these engines will be hitting the USA market this month... Smooth.

YouTube - WrongWay Cam on the Torch 90 Beast

[crash-n-burn]

Damn WrongWay, A bit over powered .. I like it, I like it alot, whats the weight of your bird ?

[WrongWayRC]

It was at 24 3/4 dry on maiden day and I made some changes, added a battery, put CF gear on so I am not sure right now, maybe just under 24 3/4. I will try to weigh it next time I get it out of the trailer. This plane was coming in at 26.5 with DA-100 so I am close to two pounds less. I am having a blast with it.

Richard

[Stu_D]

3W 210 CS TS
Caltex 2T minerai @ 30:1
Prop :- 31 x 12S x 3 blade , Mej

2 hours of ground running :-No fig

3 hours :- 5500 with 31 x 12 S Mej "NUTS"
:- 5450 with 31 x 12 (stantard type) Mej "STILL NUTS"

Stu .

PS I will be keeping this post up dated until 15 hours is on the clock .

[aerowiz]

zdz210 that has been tweaked.
castrol tts 50:1
31x12 3 blade mej _ 5500 on jmb cans. as above,,,,,nuts

[Alexander Cui]

Motor:3w55i
Prop:23-8
RPM:6700
Canister:MT-57
Oil mixture:1/40

[RTK]

How about you guys with these new Chinese engines post some of your numbers?????

[2robinhood]

( #1 )
DL-100
into gallon number four
40:1 Pennzoil aircooled
Stock mufflers
Mejzlik 27 X 10
6500 rpm

( #2 )
DL-100
Brand new ( 32 oz )
40:1 Pennzoil aircooled
Slimline smoke mufflers
Mejzlik 27 X 10TH
6350 rpm

CRRC Pro GF26I
Well run ( gallons ? )
40:1 Pennzoil aircooled
CRRC pitts muffler
APC 17 X 6
9500 rpm

CRRC GP50R
Brand new ( not run )
Prototype engine for testing sent to me by CRRC Pro ( China )
Will start runs and testing numbers in about a week.

[RTK]

I finally did some prop testing today. First off, these numbers will not seem very high, I am at least 2+ inches too long on my header. Most people running the 58 with an ES composite pipe are at 11 or less, and a friend of mine says I should be around or below 10 inches.
You would not believe how quiet this pipe is, almost like an electric in the air. The throttle response and feel is no different than on a stock muffler, awesome.
Time permitting, I will start cutting 1/2 of an inch at a time until I hit max rpm or feel peakiness.
At this point I really do not need any more power from this engine, as it flies my EF Yak very well, and pulls it out of hover with authority. I am sure with tuning I can pull many more hundred rpm out of each of these props with no sweat.

This is a new 58 with less than 3 tanks through it. Karl Mueller header at 12.5 inches.
Edit:- Engine set rich d/t first run on a new engine with a pipe I have not experimented with before, better safe than sorry.

Vess 23a
stock muffler-7300+
Es composite-7600

Mejz 22x10
ES composite-7400

Menz-s 23x8
ES composite-7100

Nx 23x8
ES composite-7000+/-

[tomyrcmodels]

MT-57 & 24-8 ZDZ prop

ES composite pipe 7000 +/-

YouTube - MT 57

[Bdegan]

	Quote: Originally Posted by 2robinhood
	CRRC GP50R Brand new ( not run ) Prototype engine for testing sent to me by CRRC Pro ( China ) Will start runs and testing numbers in about a week.

Is this photo the CRRC GP50R ??
If so, it looks like a DA with an evolution prop hub.