MOKI RADIAL Care and Maintenence
#3402
Is anyone using the new APS 380 RX fuel pump on the Moki 250's? I just replaced my 380HV pump with the newer RX version. Looks like you can set up on a throttle curve. just curious if anyone if setting the pump at a fixed % fuel rate or using a curve mixed with throttle.. if so, what type of settings are you using?
#3406
Is anyone using the new APS 380 RX fuel pump on the Moki 250's? I just replaced my 380HV pump with the newer RX version. Looks like you can set up on a throttle curve. just curious if anyone if setting the pump at a fixed % fuel rate or using a curve mixed with throttle.. if so, what type of settings are you using?
#3407
Thanks for the input Ragz... I had the pump set low and will probably not use a power curve as suggested. I'm planning to fly my Bearcat tomorrow to test it out. Running a Moki 300 and will let you know. Also, please share when you do fly your plane. I'd be interested to hear about it.
#3409
We have almost the same setup. I use the same Powerbox spark switch as well. I flew the plane once with a low setting at around 30%. I plan to test tomorrow with a little higher setting of around 50% and will tune to the rich side of peak RPM. The first flight was really short since i had an aileron flutter issue... long story.. but the lower setting on the pump seemed fine, but not a real good test.. I'll let you know.
#3411
My Feedback: (43)
Joe,
Around Jan, 2009, I was talking to Mike of RCS about an engine for my F4U but he sold the moki franchise to TBM. Around March of that year, I got my first Moki 250 from Gene at TBM. A semi amusing story: I remember talking to Gene and he said they are back ordered and wouldn't be in for 6 weeks and he would call me to see if I still wanted it. I told him, no need to call, here's my MC number, just bill me and send it. There was only one engine that was going into the corsair! It came in about 4 weeks.
Around Jan, 2009, I was talking to Mike of RCS about an engine for my F4U but he sold the moki franchise to TBM. Around March of that year, I got my first Moki 250 from Gene at TBM. A semi amusing story: I remember talking to Gene and he said they are back ordered and wouldn't be in for 6 weeks and he would call me to see if I still wanted it. I told him, no need to call, here's my MC number, just bill me and send it. There was only one engine that was going into the corsair! It came in about 4 weeks.
Last edited by samparfitt; 06-24-2015 at 06:36 AM.
#3412
My Feedback: (62)
About three weeks ago I took my newer Moki 215 to the field and had great trouble starting the engine. It would start then lean out and die at low warmup rpms. It dawned on me that I might have a sticking valve which will allow the crankcase to suck in air through the exhaust. Sure enough I had three gooped up exhaust valves. You can tell by manually with your fingers press a valve and it will be harder to depress and it will return to closed slowly. I took the engine home and used brake cleaner to free up the valves. Spray into the valve stem...wait for the cleaner to dissolve the carbon/oil crud and spray again. I did more runs at home and the valves started to stick again. I have been using Amsoil interceptor oil on my older Moki with no problems. I have some Redline two stroke oil which DA uses so I mixed up a 44 to 1 batch with Phillips 66 premium. Since then I have flown at the field three times. Last Wednesday was a 3 mile/hour wind day and I flew 9 times. The valves are as free as a bird. This is hardly a scientific controlled test. Redline does leave a bit more residue on the plane than the Amsoil suggesting better lubrication. Maybe the newer engine has a tighter fit of the stems to the guides....who knows? Anyway I am pleased with the results. -Tom
#3413
My Feedback: (1)
Join Date: Feb 2007
Location: Gray,
LA
Posts: 80
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I have been using Red Line for some time now, I had a DLE 60 sieze up about a year ago, It was under warranty so I returned it for repair, the service tech asked me what oil I was using and I told him Amsoil, he stated that the majority of the engines returned because of seizure problems were using Amsoil, he said he recommended Red Line, since I have been using it I have had to more overheating issues.
Joe I know some people swear by Amsoil, but I am sold on Red Line
Joe I know some people swear by Amsoil, but I am sold on Red Line
#3416
My Feedback: (9)
Is there relationship between Ser # and build date? I have a couple of friends with S250's that are much newer, but have lower serial #'s than my engine (2508XX, build/test date 11/2011). Anyone out there who's sorted this?
Cheers
Cheers
Last edited by marksp; 07-07-2015 at 09:26 PM.
#3417
Thanks Scott for your valuable info and knowledge today on the Moki 150...for someone I've never met or talked too, you made me feel right at home with our discussion on the phone today....Much much appreciation...your knowledge on these engines is top notch and I wanted to personally thank you here for the time spent with me.....I also talked with Vogelsang about the issues and both of you seem to hint in all the same areas pertaining to the Moki cyl # 3 high-speed misfire...what a great guy to converse with as well...very informative and helpful...great sense of humor...businesses need more of these type people in the wonderful hobby we share...this guy was working his butt off and helping me at the same time...lol....his words of wisdom and knowledge speaks volumes to our success with these engines....I've since talked with the owner, and we are planning a strategy as to what route to take here....I'll post my finding here when the engine is on the pipe and swinging the 3 blade wood in the recommended rpm range....here's a link to a video of her idling and showing no apparent problems at all...never a stumble...all cyl temps well within specs...700 steady...and will hold 600 as well...I even got 500 with out a cough...how can it be....http://youtu.be/nGNdpn52Nlo....again...Thanks to both of you for helping me sort through the issues at hand....I owe you both a good lunch....
REGARDS JOHN
#3422
My Feedback: (62)
Dento, My comment was not at you! You are the poor guy that had to deal with someone else's mistake. (or are you the guy you were referring to?) The directions are in German. Here in the states we have them in English because I sent them to a German friend who is a technical writer for translation. Elsewhere in this thread way back I posted the directions so you may want to look them over. I am glad the problem is solved for you. Well anyway, wishing you many good flights with your engine. -Tom
#3423
IAM The guy that installed it tom I never have a problem putting **** on myself when I stuff up I do realise my reaction was a little sharp so sorry about that your input to this thread has been huge so its me that should be saying sorry REGARDS
JOHN
JOHN
Dento, My comment was not at you! You are the poor guy that had to deal with someone else's mistake. (or are you the guy you were referring to?) The directions are in German. Here in the states we have them in English because I sent them to a German friend who is a technical writer for translation. Elsewhere in this thread way back I posted the directions so you may want to look them over. I am glad the problem is solved for you. Well anyway, wishing you many good flights with your engine. -Tom