Antique

My Feedback: (4)

why not take the cylinders off to flush it out ? Super Tech carb cleaner and a strong blast of air...

captinjohn

whats the rest of the story? Flush what out & why? ...........

av8tor1977

My Feedback: (6)

Ha ha, that's the way to do it Ralph!! Every time I go to the states I stop at the "Family Dollar" store and buy 4 or 5 more cans of carb cleaner spray... Great stuff for cleaning!

AV8TOR

jedijody

My Feedback: (1)

Come on Ralph, you know the skill sets we're working with here.

Tired Old Man

My Feedback: (1)

His or yours?

jedijody

My Feedback: (1)

I stayed at a Holiday Inn Hotel so I'm good to go.

Switch_639

CM8 version or CM6 version? is there power difference? the CM8 version gives me 30mm more clearance because its angled on the head... the CM6 is 270mm from plug to plug with the leads on them... 240 for the CM8 version... will there be performance difference?

kochj

plenty of inline twins offered from ZDZ and 3w...

Work very well in the c-arf spitfire, and mustang....

Here is some work, that I consider state of the art ...
http://www.rcmovie.de/video/a9f15dc5...it-dem-RR-258-

http://www.vimeo.com/10217329

not sure who said that inline engines are not practicle...but they sure bring out the best tech wiz bangs....
engineers to view...

jedijody

My Feedback: (1)

Yes, there is a slight power advantage to the CM-6 cylinders, it's of little significance though on a 50cc sized plane as either one will fly it like it's a rag doll.Mine with theM-8 cylinders spins a 23x8 Xoar at 7220 RPM, a 24x8 at 6470, and a 22x8 Xoar 3 blade at 6450. The CM-6 cylinder version spins the 23x8 at 7450, 24x8 at 6690, and the 22x8 3 blade at 6640. They are new, have very little time on them and every time I run them I tach them and they are spinning faster every time.

The only factors I see in choosing which one to use is cowl fit and the spark plugs. The CM-6 plugs are a no brainer,inexpensive, long lasting,and easy to get almost anywhere. There are 3 makers of the M-8 style plugs, NGK, Rcexl in China and Paul Knapp, sold by Roland Morrison at Rimfire in Washington St. USA. The NGK version does not have a good reputation for reliability, the Rcexl plugs are very good and should last most flyers a season if they can tune the engine properly, the best ones are the Rimfire plugs but they are a little expensive at $17 each.

Tired Old Man

My Feedback: (1)

Another state of the art. 88cc, injected, heavy fuel. This one has the ability to enjoy a large production run, reducing the manufacturing cost per unit, and has a potentially wide application venue. Unfortunately that venue is unlikely to ever include the hobby population and remain unaffordable for us mere mortals.

Antique

My Feedback: (4)

Morrison sells, but I think Paul Knapp still makes the Rimfires...
CM-8 ????
Paul started making 1/4-32 plugs because the NGKs were so bad...

By the way, moderators, I see you're at it again...
Gonna moderate this one too ???

jedijody

My Feedback: (1)

Sorry, I stand corrected, post edited. It was a late night.

av8tor1977

My Feedback: (6)

Very cool engine T.O.M.

Two questions, why the crankcase viewport, and where could a fellow source that filter material in the cute little air filter?

AV8TOR

Tired Old Man

My Feedback: (1)

The filter is just basic foam air filter material. 3w sells pre-made filters but you have to fit them. Not like the one in the picture. Viewport pretty much explains it. There's stuff that goes on top.

av8tor1977

My Feedback: (6)

Looks like a very "open celled" free breathing foam in that filter, as opposed to the dense foam used in most two stroke air filters. That's why I was interested in that particular material.

AV8TOR

Tired Old Man

My Feedback: (1)

A fair amount of what is used on some "exotic" engines is off the shelf performance stuff found at motorcycle and kart shops. It just gets reshaped to fit the desired size. A lot of stuff that looks to be "one off" is again an off the shelf item from another product and adapted to fit the needed application. Some things just get shrunk a little and look different in the final form.

SlickZERO

I just received the Gold Wing 30% Sbach 242 50cc. Bought a CRRC 55ii twin and it fits in the cowl without cutting anything except 2 exhaust pipes and rear exit air hole.

earlwb

There are several inline engines to choose from. Supertigre 60cc twin, many people converted them to gasoline spark ignition. MARK or MOKI 360 inline twin. Valach has a 120 inline twin too. ZDZ has a inline 210 and a 80. The ZDZ 80 might be what you are looking for. Kolm makes a twin and a triple inline engine and maybe a inline four now too. Of course OS makes a nice inline four cylinder engine. Enya,Saito and Laser make V-Twins, but you would have to convert them to spark ignition though.