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HomeRC & PowerAircraftHelicopterEngines Plugs Mufflers Fuel › filling the header tank....
09-09-2018 03:20 AM  67 days agoPost 1
UKhelinoob

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Michigan USA

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Guys...What parts do I need so I can fill this header tank (Easy) using a fuel pump and the part that pinches the tubing (that goes to the carb), as I do know what I need.. But don't know the names to find them...

Oh I think a clamp with the plug. Which is part of it..

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09-09-2018 03:48 AM  67 days agoPost 2
KJH

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Interlochen, MI

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I like to keep things simple. No "T" connections.

Attach a filter a short distance from the carb. When fueling, detach the fuel line from the filter (closest to header) and fill the tanks. This way, you're not pumping crap into the filter that would end up in the carb as soon as your start the engine.

Put a shut off clamp between the filter and header tank. I use this or others like it: https://www.amainhobbies.com/k-s-fu...-ksj975b/p12631

After filling, close the clamp. This way the engine doesn't flood before you start it.

When you want to start it, open the clamp just before applying your starter. After your flight, close the clamp, again.

This is just one way to accomplish the task. Find what works for you.

-Kevin

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09-09-2018 04:09 AM  67 days agoPost 3
UKhelinoob

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Michigan USA

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KJH
I like to keep things simple. No "T" connections.

Attach a filter a short distance from the carb. When fueling, detach the fuel line from the filter (closest to header) and fill the tanks. This way, you're not pumping crap into the filter that would end up in the carb as soon as your start the engine.

Put a shut off clamp between the filter and header tank. I use this or others like it: https://www.amainhobbies.com/k-s-fu...-ksj975b/p12631

After filling, close the clamp. This way the engine doesn't flood before you start it.

When you want to start it, open the clamp just before applying your starter. After your flight, close the clamp, again.

This is just one way to accomplish the task. Find what works for you.
Ok But what do I need to plug the header tank after filling. Oh the Tank is not in a heli....

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09-09-2018 12:29 PM  67 days agoPost 4
KJH

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Interlochen, MI

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Based on your setup, you probably don't need anything. When you fuel up, remove the line between the header tank and carb at the carb. Attach your fuel pump line and start filling. The header tank fills first and then your main tank.

Have you seen this? It may help you:

Watch at YouTube

-Kevin

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09-09-2018 09:07 PM  67 days agoPost 5
UKhelinoob

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Michigan USA

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KJH
Based on your setup, you probably don't need anything. When you fuel up, remove the line between the header tank and carb at the carb. Attach your fuel pump line and start filling. The header tank fills first and then your main tank.

Have you seen this? It may help you:

Watch at YouTube

Nope But thank's. I did find this to try out "Du-Bro 334 Kwik-Fill Fueling Valve" (I have to make a mounting bracket though). However there's no dust cap for it (The large scale ones does come with one) Oh, Can I use a 11.1v 3-cell lipo instead of that battery (To power the fuel pump), as the lipo is much lighter....

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09-09-2018 09:40 PM  67 days agoPost 6
JuanRodriguez

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The Villages, Florida

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No reason why you couldn't use a lipo for your fuel pump...

Regarding your fuel valve.... Honestly, I don't think it's necessary as the approach shown on the video is the cleanest and easiest and foolproof.

AND, that fuel valve is prone to creating air leaks over time which could potentially lead to lean runs..... I definitely WOULD NOT use it on any aircraft......my personal opinion....

Been there, done that and old enough to know better.....

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09-09-2018 10:08 PM  67 days agoPost 7
JLF92677

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Southern California

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UKhelinoob
I did find this to try out "Du-Bro 334 Kwik-Fill Fueling Valve" (I have to make a mounting bracket though).
Juan brings up a good point about the “Fueling Valve” leaking, they eventually do. So if you decide to use it, you better practice your auto’s... you will most likely end up with a flame out in mid air...

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09-09-2018 10:21 PM  67 days agoPost 8
JLF92677

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Southern California

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Another option to consider is a 3-way fuel filter such as:

https://www.amainhobbies.com/align-...gnhn6022/p23196

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09-09-2018 11:22 PM  67 days agoPost 9
JuanRodriguez

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The Villages, Florida

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JLF92677
Juan brings up a good point about the “Fueling Valve” leaking, they eventually do. So if you decide to use it, you better practice your auto’s...
The good thing is that his setup is on a truck, not heli...... I would never use that on ANY aircraft....

Been there, done that and old enough to know better.....

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09-10-2018 02:54 AM  66 days agoPost 10
ICUR1-2

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Ottawa, Ontario

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JLF92677
Another option to consider is a 3-way fuel filter such as:

https://www.amainhobbies.com/align-...gnhn6022/p23196

That's what I use

spending time, paying attention

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09-10-2018 03:45 AM  66 days agoPost 11
UKhelinoob

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Michigan USA

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JLF92677
Another option to consider is a 3-way fuel filter such as:

https://www.amainhobbies.com/align-...gnhn6022/p23196

Thanks. I have just ordered one, and it don't cost much...

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09-10-2018 03:49 AM  66 days agoPost 12
UKhelinoob

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Michigan USA

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JuanRodriguez
JLF92677
Juan brings up a good point about the “Fueling Valve” leaking, they eventually do. So if you decide to use it, you better practice your auto’s...
The good thing is that his setup is on a truck, not heli...... I would never use that on ANY aircraft....
Yep it's on my extended truck.. You see I don't have any nitro heli's..Just electric ones IE: 3 E-Razor's (Boxed and will be up for for sale) and 2 Aligns (450, and 470)..The Aligns are still not built yet.. But anyway, is there a dust cap for the fuel valve (Just wondering)...

Oh.. What fuel should I use in this motor (Thunder Tiger .70).. Heli or plane fuel, and how should I break it in....

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09-10-2018 05:31 AM  66 days agoPost 13
JLF92677

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Southern California

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UKhelinoob
Oh.. What fuel should I use in this motor (Thunder Tiger .70).. Heli or plane fuel, and how should I break it in....
The engine manual should answer both questions. If not, I would suggest 30% nitro heli fuel and run the engine rich for the first 3 to 4 tanks before leaning out.

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09-11-2018 01:19 AM  65 days agoPost 14
UKhelinoob

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Michigan USA

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JLF92677
UKhelinoob
Oh.. What fuel should I use in this motor (Thunder Tiger .70).. Heli or plane fuel, and how should I break it in....
The engine manual should answer both questions. If not, I would suggest 30% nitro heli fuel and run the engine rich for the first 3 to 4 tanks before leaning out.
Ok Thanks.. But I do have another question... I fitted new bearings to the motor and to this spare crankcase. But I left one cover on the main bearing because.. The motors that I have bought (Used) in the past have had the bearing destroyed (Bearing cage failed), so the crown of the piston was marked full of pot holes, and the head too (Some of the steel balls got up there and got crushed)... I found out by removing the back plate first, and removing the head too... That's why I left one side of the bearing cover on. Will it be Ok to run the motor leaving it on...

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09-11-2018 02:16 AM  65 days agoPost 15
JuanRodriguez

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The Villages, Florida

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That “bearing cover” is called a shield. Actually , a dust shield..... and No.... that bearing should not be shielded. Leaving that shield in place will prevent proper lubrication from reaching the bearings and will cause the bearing to fail sooner .... leaving the shield on will not prevent the damage you described....

The only bearing that needs the shield is the front bearing. And that shield should face the front of the engine.......

Been there, done that and old enough to know better.....

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09-11-2018 01:53 PM  65 days agoPost 16
UKhelinoob

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Michigan USA

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JuanRodriguez
hat “bearing cover” is called a shield. Actually , a dust shield..... and No.... that bearing should not be shielded. Leaving that shield in place will prevent proper lubrication from reaching the bearings and will cause the bearing to fail sooner .... leaving the shield on will not prevent the damage you described....

The only bearing that needs the shield is the front bearing. And that shield should face the front of the engine.......
Thanks for letting me know. I have now removed the shield. But it took me 2 hours.. Because I had to remove the motor and strip it down.. Now it's all back together.... But as I said I bought 2 car motors in the past and both had main bearing failure's (Ball cage broke)...

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09-11-2018 02:51 PM  65 days agoPost 17
JuanRodriguez

rrProfessor

The Villages, Florida

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UKhelinoob
But as I said I bought 2 car motors in the past and both had main bearing failure's (Ball cage broke)...
Understood.... but having a shield on that bearing will prevent the fuel / oil mix used for lubrication from adequately reaching the bearings. The result would be premature failure.

You need to find out why your bearings keep failing.

Is it lack of lubricaton ? Improper oil in the fuel ?? Too much high end RPM ?? Combination of the above ??

My guess is that you’re running the motor too lean .....

Been there, done that and old enough to know better.....

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09-11-2018 05:13 PM  65 days agoPost 18
UKhelinoob

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Michigan USA

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JuanRodriguez
UKhelinoob
But as I said I bought 2 car motors in the past and both had main bearing failure's (Ball cage broke)...
Understood.... but having a shield on that bearing will prevent the fuel / oil mix used for lubrication from adequately reaching the bearings. The result would be premature failure.

You need to find out why your bearings keep failing.

Is it lack of lubricaton ? Improper oil in the fuel ?? Too much high end RPM ?? Combination of the above ??

My guess is that you’re running the motor too lean ....
Nooo (Never did run them)... I bought the 2 motors in that condition.. You see I found out by removing the heads (After I buying them off eBay), and they were shot..

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