sulqatar

Dear gasoline user


I have ZDZ 100 twin engine I have strange problem!

the power is too low but if start the smoke it give good power !! I don't know whey?

i use 2 long toned pipe for50 cc each I test 26x10 and 27x10

Can I found any solutions ?


One more thing, I See one Slender more dark blue than the other one, but I thnik this is normal in ZDZ 100

Diablo-RCU

My Feedback: (1)

Adding the smoke fluid cools the pipes and changes the tuning effect of the pipes on exhaust scavenging. So, either you have to change header length, prop, needle setting on the carb, or get more airflow over the pipes to keep them cool without having to add smoke fluid.

krayzc-RCU

My Feedback: (31)

were or who gave u the specs for the header lenght?

any pics?

sulqatar

Thanks for replay Mr.Diablo, I do every thing , change needel setting , change props , give mre air airflow , I think I should add steel net inside the tunepipe , do you thing this will give same smoke effict ?


Hi Mr. krayzc

I taked some pictures for you :

krayzc-RCU

My Feedback: (31)

what kind of rpm numbers are you getting?

what is your idle RPM?

were did you get the headers and tune pipe?

how many gallons of fuel have you burned on the motor?

what is the weight of the plane AUW?

sulqatar

The airplane in the workshop now , I well ask them to give me the weight and prop RPM .
I finish around 3 gallons , I purchase the engine and headers and tuned pipe from espritemodel.com as them recommendation .

Mike Dooley/RCS

I recommend adding at 3-4 inch section of 25mm pipe to increase header length. We like to see 12-14" header lengths for 27" props and shorter headers for 26" props with higher operating RPM. Introducing smoke fluid with increased performance usually indicates too short of a header or severly overheating tuned pipes from a lack of adequate ventilation....

sulqatar

Dear Mr.mark and krayzc-RCU and Diablo-RCU

Can you chick the following and tell me :

http://www.rcuniverse.com/forum/m_60...tm.htm#6011897

Mike Dooley/RCS

Yes, We can service your engine. We are the importer for ZDZ in the United States and do all reapir work here at our facility in Maryland. You say the engine was purchased from Esprit Model. Was there no information included with the engine with our instructions, warranty or contact information ? Please fill out the Service Request Form on our "FAQ" section.
www.rcshowcase.com

sulqatar

Hi mr.Mike

I sent the engine to you , please re toned the engine power , I think we need connection to extend the muffler


Thanks
Sultan