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Bladder tanks Guys
Page 1 of 1
Bladder tanks Guys
As above Gents, I'm liking the extra run time.
Any other pros?
Are there any cons?
Any other pros?
Are there any cons?
John Goddard- Diamond Member
- Posts : 2447
Join date : 2011-11-24
Age : 59
Location : Leyton North East London
Re: Bladder tanks Guys
no one ever used one?
John Goddard- Diamond Member
- Posts : 2447
Join date : 2011-11-24
Age : 59
Location : Leyton North East London
Re: Bladder tanks Guys
John Goddard wrote:no one ever used one?
I think rusty had one on a CL plane.
Indra
Re: Bladder tanks Guys
Rusty used a balloon of some sorts and a cigar tube. I believe it was on his chopped stuntman. Ask him when he comes online.
Godsey3.0- Platinum Member
- Posts : 970
Join date : 2011-09-21
Age : 28
Location : Metamora, Indiana
Re: Bladder tanks Guys
I have used a pressure-less bladder and a pressure bladder. I answered in the thread in the general questions forum about the pressure bladder. It works great, just makes fueling a little more of a pain, but not much once you get your routine down. If anyone is interested I can answer more about the pressure-less balloon too.
Here is a video demo of the balloon tank. Fast forward when I start cranking it, but be sure and catch the first and last couple of minutes of the video:
https://www.youtube.com/user/rastus10?feature=guide#p/u/7/VMPlgF81fgc
I have refined it since I made the video.
Here is a video demo of the balloon tank. Fast forward when I start cranking it, but be sure and catch the first and last couple of minutes of the video:
https://www.youtube.com/user/rastus10?feature=guide#p/u/7/VMPlgF81fgc
I have refined it since I made the video.
_________________
Don't Panic!
...and never Ever think about how good you are at something...
while you're doing it!
My Hot Rock & Blues Playlist
...and never Ever think about how good you are at something...
while you're doing it!
My Hot Rock & Blues Playlist
RknRusty- Rest In Peace
- Posts : 10869
Join date : 2011-08-10
Age : 67
Location : South Carolina, USA
Re: Bladder tanks Guys
Thanks Rusty
Just one question, do they only work with balls out full throttle
Or could one be utilised with a r/c throttle?
J
Just one question, do they only work with balls out full throttle
Or could one be utilised with a r/c throttle?
J
John Goddard- Diamond Member
- Posts : 2447
Join date : 2011-11-24
Age : 59
Location : Leyton North East London
Re: Bladder tanks Guys
The pressurized bladder has to run wide open screaming. When the needle is set, fuel is forced through the NV at a constant rate regardless of the engine speed. So if you throttle down, the same amount of fuel is still being forced into the engine. If you stop the engine with fuel in the bladder, you have to clamp it off quickly or it can fill up the crankcase.
With pressure bladders, a bored venturi can help performance because it lets more air in, and vacuum is not needed to get the fuel to flow. The bladder does all the work.
Though I have never used a throttle, the pressure-less balloon bladder should work well with one because you only fill it full without stretching the rubber, and there is no forced feed. You just have to make sure you evacuate all of the air before pushing the fuel in with your syringe. It's all engine vacuum that pulls the fuel in. I tried it with my TD .049 and it worked pretty well, but I bet a Medallion is probably the best engine for this system since it has larger less finicky orifices than a Tee Dee. If you use a pressure-less bladder on a Tee Dee, be sure and use a stock venturi, not bored, because you want the best vacuum you can get so it pulls the fuel in efficiently.
With pressure bladders, a bored venturi can help performance because it lets more air in, and vacuum is not needed to get the fuel to flow. The bladder does all the work.
Though I have never used a throttle, the pressure-less balloon bladder should work well with one because you only fill it full without stretching the rubber, and there is no forced feed. You just have to make sure you evacuate all of the air before pushing the fuel in with your syringe. It's all engine vacuum that pulls the fuel in. I tried it with my TD .049 and it worked pretty well, but I bet a Medallion is probably the best engine for this system since it has larger less finicky orifices than a Tee Dee. If you use a pressure-less bladder on a Tee Dee, be sure and use a stock venturi, not bored, because you want the best vacuum you can get so it pulls the fuel in efficiently.
_________________
Don't Panic!
...and never Ever think about how good you are at something...
while you're doing it!
My Hot Rock & Blues Playlist
...and never Ever think about how good you are at something...
while you're doing it!
My Hot Rock & Blues Playlist
RknRusty- Rest In Peace
- Posts : 10869
Join date : 2011-08-10
Age : 67
Location : South Carolina, USA
Re: Bladder tanks Guys
Top Man Rusty
Many thanks
J
Love the vid BTW
Many thanks
J
Love the vid BTW
John Goddard- Diamond Member
- Posts : 2447
Join date : 2011-11-24
Age : 59
Location : Leyton North East London
Bladder Tanks Guys
Just discovered this excellent video, Thanks Rusty if you don't
mind me getting personal on such short aquaintance.
So that,s what the medallion is, excellent!
Always love peeks at other guys workshops too and their models.
John
Oops! couldn't find spell check, shouldn't use big words!
mind me getting personal on such short aquaintance.
So that,s what the medallion is, excellent!
Always love peeks at other guys workshops too and their models.
John
Oops! couldn't find spell check, shouldn't use big words!
proctor- Gold Member
- Posts : 199
Join date : 2012-01-31
Location : Scottish Highlands
Re: Bladder tanks Guys
That's okay, I called a cylinder a piston twice in the video.proctor wrote: Just discovered this excellent video, Thanks Rusty if you don't
mind me getting personal on such short aquaintance.
So that,s what the medallion is, excellent!
Always love peeks at other guys workshops too and their models.
John
Oops! couldn't find spell check, shouldn't use big words!
_________________
Don't Panic!
...and never Ever think about how good you are at something...
while you're doing it!
My Hot Rock & Blues Playlist
...and never Ever think about how good you are at something...
while you're doing it!
My Hot Rock & Blues Playlist
RknRusty- Rest In Peace
- Posts : 10869
Join date : 2011-08-10
Age : 67
Location : South Carolina, USA
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