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Search: Posts Made By: Boboeing
Showing results 1 to 22 of 22
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Forum: Gas Engines
09-07-2018, 08:10 AM
Replies: 1,678
Views: 461,362
Posted By Boboeing

Thanks tyor, Did the following and it seemed...

Thanks tyor,

Did the following and it seemed to help reduce vibration and the shakes at idle:

Smaller diameter prop. Reduced size from 20-8 to 19-8.
Retarded ignition a little which lowered...
Forum: Gas Engines
09-05-2018, 11:12 AM
Replies: 1,678
Views: 461,362
Posted By Boboeing

Thinking about putting one of these on a 86 inch...

Thinking about putting one of these on a 86 inch Phoenix Stinson Reliant. I get good top end power. Xoar 18-8 7400 RPM. Valley View 19-8 7000 RPM. Valley View 20-8 6700RPM.( I think the Valley View...
Forum: Gas Engines
09-07-2017, 05:14 PM
Replies: 1,678
Views: 461,362
Posted By Boboeing

Hey Dave, Mine runs really well and is still...

Hey Dave,

Mine runs really well and is still sitting on my test stand. Just can't seem to settle on which airplane to put it on. Four strokers really lend themselves to scale models but the new...
Forum: Gas Engines
08-12-2017, 08:52 PM
Replies: 1,678
Views: 461,362
Posted By Boboeing

I would say the engine is not broken in yet....

I would say the engine is not broken in yet. Perhaps half a gallon of fuel through it.
Forum: Gas Engines
08-09-2017, 08:50 PM
Replies: 1,678
Views: 461,362
Posted By Boboeing

Gentlemen, No complaints about this engine....

Gentlemen,

No complaints about this engine. Starts easily, runs smoothly and power equal to my 35 cc two stroke engines. Following RPM results with 28:1 Redline oil in 92 octane gasoline at 400 ft...
Forum: Gas Engines
10-01-2016, 06:24 PM
Replies: 1,678
Views: 461,362
Posted By Boboeing

One or two degrees one way or the other won't...

One or two degrees one way or the other won't make much difference in how the engine runs. To be consistent just turn the hub the same direction up against the key each time before tightening the...
Forum: Gas Engines
09-27-2016, 07:57 PM
Replies: 1,678
Views: 461,362
Posted By Boboeing

To facilitate longer engine life I would suggest...

To facilitate longer engine life I would suggest 25:1 oil to gas ratio.
Forum: Gas Engines
09-27-2016, 07:52 PM
Replies: 1,678
Views: 461,362
Posted By Boboeing

Yes....It needs to be wet for a cold start. For a...

Yes....It needs to be wet for a cold start. For a warm start just close throttle to a fast idle and flip briskly. No choke required unless you allowed it to cool down before restarting.
Forum: Gas Engines
09-26-2016, 03:56 PM
Replies: 1,678
Views: 461,362
Posted By Boboeing

Mine runs quite well out of the box with 25:1 Rd...

Mine runs quite well out of the box with 25:1 Rd Line oil. Very little exhaust residue with the needles set just a tad on the rich side. Power output somewhere between a 30 and 35 cc two stroker....
Forum: Gas Engines
09-25-2016, 04:09 PM
Replies: 1,678
Views: 461,362
Posted By Boboeing

Try hand start as follows for cold...

Try hand start as follows for cold start.....Ignition off... open throttle all the way and close choke. Flip until you see fuel in line just entering carburetor. Ignition on....flip until it pops....
Forum: Gas Engines
09-21-2016, 05:17 PM
Replies: 1,678
Views: 461,362
Posted By Boboeing

Not sure...look for both valves to be closed at...

Not sure...look for both valves to be closed at TDC on compression stroke. Turn crankshaft by hand and observe valves. If both not closed at TDC... reverse direction of the camshaft mark.
Forum: Gas Engines
09-20-2016, 07:11 AM
Replies: 1,678
Views: 461,362
Posted By Boboeing

ernestino......looks like mark in cam lobe was...

ernestino......looks like mark in cam lobe was caused by a valve pushrod. If you had pre ignition while running or starting , prop back lash and exhaust thru carburator, then mark may have been...
Forum: Gas Engines
08-18-2016, 01:19 PM
Replies: 1,678
Views: 461,362
Posted By Boboeing

3/8-24 thread

3/8-24 thread
Forum: Gas Engines
08-17-2016, 01:29 PM
Replies: 1,678
Views: 461,362
Posted By Boboeing

AC2 Nice project..... My NGH 38 cc is a...

AC2

Nice project..... My NGH 38 cc is a recent purchase and has about a half hour of break in running time on it. With a Zoar 18-8 prop and the recommended 20:1 synthetic oil ratio for break in...
Forum: Gas Engines
08-14-2016, 03:01 PM
Replies: 1,678
Views: 461,362
Posted By Boboeing

Lots of work but nice fit. What model plane is...

Lots of work but nice fit. What model plane is that?........I could do the same with the J3 Cub or maybe put in a new fire wall. Would have to cut away most of the original firewall and cut an access...
Forum: Gas Engines
08-13-2016, 01:54 PM
Replies: 1,678
Views: 461,362
Posted By Boboeing

Will this engine fit in a Hangar 9 J3 CUB without...

Will this engine fit in a Hangar 9 J3 CUB without having to move the firewall back ? Manual shows 6 inches from firewall to front of prop hub.
Forum: Gas Engines
07-17-2016, 05:08 PM
Replies: 1,678
Views: 461,362
Posted By Boboeing

Thanks....I've been looking at the Top RC Model...

Thanks....I've been looking at the Top RC Model Spitfire MK IX or the Great Planes Waco.....The Val looks really nice too but way more work and experience required to complete than I'm capable of. ...
Forum: Gas Engines
07-17-2016, 07:10 AM
Replies: 1,678
Views: 461,362
Posted By Boboeing

Would this NGH 38 CC engine be powerful enough...

Would this NGH 38 CC engine be powerful enough for an 81 inch Spitfire with an all up weight of 18 pounds ? I've seen it on an ESM VAL with an 81 inch wing span but have no idea how much that model...
Forum: Gas Engines
07-05-2016, 08:38 PM
Replies: 1,678
Views: 461,362
Posted By Boboeing

You could also try thin high durometer rubber...

You could also try thin high durometer rubber washers, maybe 1/16 inch thick, between the fender washers and fire wall. Tightened down the compresive force of the rubber helps keep bolts from...
Forum: Gas Engines
07-02-2016, 04:27 PM
Replies: 1,678
Views: 461,362
Posted By Boboeing

Thanks. Very nice. I have some 5/16 inch thick...

Thanks. Very nice. I have some 5/16 inch thick aluminum and brass and a 14x.75 tap ready to go.
Forum: Gas Engines
06-30-2016, 08:18 AM
Replies: 1,678
Views: 461,362
Posted By Boboeing

Would an ASP 180 muffler reduce RPMs too much? ...

Would an ASP 180 muffler reduce RPMs too much? Would need to make a 14 x .75 mm adapter to screw onto the exhaust port. Anybody tried it and have RPM numbers?
Forum: Gas Engines
06-29-2016, 06:01 PM
Replies: 1,678
Views: 461,362
Posted By Boboeing

Seems like Hobby King now stocks parts at a...

Seems like Hobby King now stocks parts at a reasonable price.
Showing results 1 to 22 of 22


 
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