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@@gregnorton2036 youre welcome. Yes, jd starting fluid. An old top flite 13- 4 i think is what i used for the test run

35 % benol, remainder starting fluid....

Good reason not to do that LOL

Thank you, Mark....

Because i no longer like the smell of fuel oil / kero.... the two part fuel runs well enough for me, and is easy to clean up. I'm sure for better performance, three part fuel is better though....

Yes, the CS built version, mid to late 1990s....

@briancox3691 yes! Friendly wood will be much better :)

Wasn't me, but yes ! A GREAT SAVE !

Hi - i really dont know but i have had no range issues with two models using the same electronics....

@@jeffmac2529 ok thanks for the reply 👍

Cool update , would love to see an ARUP in person....

Thank you Sir.... would be fun to build the GHQ Sportster gas model and give this a flying attempt....

Hi Thomas.... Yes, Maytag Newton Iowa built these....

Very Cool.

Thanks for the story 818, thats kool. I had the Thermic 50 towliner but did not really have successful flights. Still have that plan though....

Sir, i would think a short or long medium heat range plug would work fine. Just compare length to the original one. I do not know if the threads are metric or s.a.e.

@@jeffmac2529 thank you so much!

Hi Marshal.... the Rogers normally runs LH CCW. The plug thread is. 1/4-32 .....

hi Jakob... The throttle was optional i think, In any case, start by turning in the needle gently until it stops, then turn out 3.5 turns. That should give a close start position if the spraybar is aligned and jets clear to pull fuel......

@@jeffmac2529 I have 1 just like haven't tried to start it but it does have compression.. how do I start this engine I have thanks

@@aaronbrown4340 get a good glow plug, test with 1.5 volts to get an orange glow. Install glow plug. Mount engine on a stand or bolted to a hatdwood or ply mount. Secure the mount. Gently turn needle valve in ( clockwise) until it stops, then turn it out 3 to 4 turns. Prime engine in exhaust with a few fuel drops ( at leadt 20 percent oil, castor should be added ) nitro - 5 percent but not critical. Snap flywherl a few times, hook up 1.5 volt battery to plug, snap again. Wl start and run the prime. After that, have a 1 to 2 ounce or so fuel fueled, hook up fuel line. Follow above starting process. Repet until its running,Adjust needle as needed. Be sure to not tun it very long without water cooling,.... have fun....

Hi Marshall... Larry Davidson in the USA has them.. Google his name or check SAM USA website....

@@jeffmac2529 Thank you so much.

Hi Michele - i used the plastic russian propeller supplied with the engine.... Being careful not to be in line with the prop if a failure happened..... jeffMac

@@jeffmac2529 Hi Jeff, the propeller is 8x4 or 8x6? thank you.

@@michelemarchese259 It is the prop supplied from the russian factory... it does appear to be ~ 8-4 or 6.......

@@jeffmac2529 Ok Jeff, well. But do you also use nitromethane in the mixture?Thank you.

@@michelemarchese259 Only a 5% nitro 20% castor oil 75% methanol glow fuel...

Hi Joshua..... I would not dismantle the engine.... It has no ball bearings, so an acetone bath , dry out, and re-oiling with automatic transmission fluid ( for storage ) is what i do with these type of engines.....

@@jeffmac2529 JeffMac ah, thank you for letting me know. I was waiting on doing anything to it till I knew what to do as I have no experience running or caring for these motors. I'll follow your directions as I intend to store it for a while.

saito125 the plan is on outerzone and the n my rcgroups build log. I do not have my redrawn structure published though..

Hi Nick - if i remember it was a 10-6 top flite maple prop......

Well I don't have a tacho but it seems to turn an 11-4 prop well enough :) it started by hand and throttled quite well....

Hi Earl - i'll ad more castor to bring the content up to around 30% before I give it a try on spark ignition.... :)