Banner Ad 1

Converting gas system to.....

R/C Submarine modelers

Converting gas system to.....

Postby subkraft » Tue Sep 11, 2012 12:05 am

.....rcabs or snort and blower arrangement. Read on another board that shall remain nameless that this has been done. I've got a couple of propel systems tubes lying around, can't get gas for them, considered trying butane...can anyone advise on the conversion?

Thanks
“The difference between genius and stupidity is that genius has its limits.” ~ Albert Einstein.
subkraft
SubCommittee Member
 
Posts: 52
Joined: Mon Jan 19, 2009 1:53 am
Location: Australia

Re: Converting gas system to.....

Postby Sub culture » Tue Sep 11, 2012 3:26 am

Isn't propel largely made up of butane?

You could get some blower pumps and plumb them in to your tanks to blow your tank like the snort system. Inexpensive and dead simple.
'Why are you staring at an empty pond?'

Want to dive your boat in crystal clear water? Then you had better Dive-in- http://www.diveintomodelsubmarines.co.uk
User avatar
Sub culture
SubCommittee Member
 
Posts: 2865
Joined: Fri Feb 21, 2003 6:55 am
Location: London, UK

Re: Converting gas system to.....

Postby Boss subfixer » Tue Sep 11, 2012 1:13 pm

Mine started out it's life as a propel system, now it's RCABS. the only thing I kept from the original setup was the motor housing.

Image
Don Evans
SCM# 2733



Put your heart into it, well done is better than well said... Ben Franklin
User avatar
Boss subfixer
Registered User
 
Posts: 673
Joined: Sat Aug 07, 2004 11:29 am
Location: Rhode Island, USA

Re: Converting gas system to.....

Postby redboat219 » Thu Sep 13, 2012 5:38 am

RCABS great but it's not a "one size fits all" approach. Due to the limited amount of air within the WTC it hard to achieve a high freeboard. Great for nukes not WWII boats.
"Make it simple, make it strong-and make it work!" - Mikhail Mil
User avatar
redboat219
Registered User
 
Posts: 407
Joined: Fri Jan 14, 2005 4:07 am
Location: Philippines

Re: Converting gas system to.....

Postby JWLaRue » Thu Sep 13, 2012 9:40 am

redboat219 wrote:RCABS great but it's not a "one size fits all" approach. Due to the limited amount of air within the WTC it hard to achieve a high freeboard. Great for nukes not WWII boats.

Easy to fix for large(er) boats....add one or more air flasks.

-Jeff
Rohr 1.....Los!
User avatar
JWLaRue
SubCommittee Member
 
Posts: 3882
Joined: Wed Aug 31, 1994 6:00 pm
Location: Annapolis, MD

Re: Converting gas system to.....

Postby Sub culture » Thu Sep 13, 2012 5:01 pm

The majority of ballast systems I encounter recirculate the air. Piston tank systems, water pump systems with sealed tanks, including the OTW system which compresses the air into the fore and aft compartments. They all work on boats with low and high waterlines.

However they require fairly large cylinders, as the systems run at modest pressures, and the displaced air has to go somewhere.

For boats with very high freeboard, a dual stage system has a lot going for it. Either a snort type, or vented water pump, main tank, with a smaller trim tank based either on a small piston tank or a sealed tank water pump system. With those you get the advantages of each system, and it follows fullsize practice more closely.
'Why are you staring at an empty pond?'

Want to dive your boat in crystal clear water? Then you had better Dive-in- http://www.diveintomodelsubmarines.co.uk
User avatar
Sub culture
SubCommittee Member
 
Posts: 2865
Joined: Fri Feb 21, 2003 6:55 am
Location: London, UK


Return to R/C Modeler

Who is online

Users browsing this forum: Bing [Bot], Google [Bot]

cron