Info about Fuji .099SR BB ABC

An open forum for questions about any radio control engines

Moderators: Frank Klenk, SteveM

Info about Fuji .099SR BB ABC

Postby jocondor » Thu Feb 04, 2010 9:02 am

Hi to everyone, i need the help of real experts, i just bought on the bay this motor NIB, i know that BB means Ball Bearings but what about ABC?
I have more than one .099SR but no BB ones, and even if they are airplane engines i use them on my vintage buggies, they are very popular on small nitro buggies in the 80s.

Any info or tech sheet would be appreciated.

Thanks a lot for your help

jc
jocondor
 
Posts: 8
Joined: Mon Feb 11, 2008 7:26 am

Postby ron bennett » Thu Feb 04, 2010 1:15 pm

ABC is an Aluminum piston running is a Bronze (or in the case of high performance engines, Beryllium), Chrome-plated liner. AAC is an Aluminum piston rinning in a Aluminum Chromed-plated liner. The idea is to more closely match the expansions at running temperature. The aluminum liner saves about an ounce in weight.

Ron Bennett
Monouth, OR
ron bennett
 
Posts: 57
Joined: Sat Jun 26, 2004 7:11 am
Location: Monmouth, OR

Postby chiefss » Fri Feb 05, 2010 11:44 am

Not quite correct. ABC is an aluminum piston running in a chromed BRASS cylinder. Not bronze or beryllium.
chiefss
 
Posts: 611
Joined: Sun Sep 30, 2007 1:22 pm
Location: Bremerton, WA

Postby dennis » Fri Feb 05, 2010 8:25 pm

chiefss wrote:Not quite correct. ABC is an aluminum piston running in a chromed BRASS cylinder. Not bronze or beryllium.


I agree, and I'd never want to be near a machine doing work on Beryllium, talk about poisonous fumes. we have areas where it was mined where nothing will ever grow again.
dennis
dennis
 
Posts: 93
Joined: Wed Jan 08, 2003 5:27 am

Postby chiefss » Fri Feb 05, 2010 10:35 pm

Yup, that's why Dumas quit making boat propellers out of the stuff.
chiefss
 
Posts: 611
Joined: Sun Sep 30, 2007 1:22 pm
Location: Bremerton, WA

Postby ron bennett » Sat Feb 06, 2010 10:45 am

If you contact engine makers, you will hear that brass alloys are way to soft for liners and most all makers used a bronze alloy, not brass. And, like I posted, high performance engines like Cyclon and Profi et.al., use beryllium liners on their better engines.
ron bennett
 
Posts: 57
Joined: Sat Jun 26, 2004 7:11 am
Location: Monmouth, OR

Postby chiefss » Sat Feb 06, 2010 12:37 pm

You better check your manufacturers again. None use bronze and beryllium is a no no now as it is a known carcinogen. Has been for years. Dumas quit using in in boat props 25 years ago.

No one has ever used beryllium in engine cylinders. I think if it was used guys like Clarence Lee, Dave Gierke, and the other engine guys might have mentioned it. They would have also mentioned it if bronze was used. Brass is the metal of choice becuase of its coefficient of expansion.

Brone and brass are two completely different alloys. Bronze is copper and tin, Brass is copper and zinc.

I have two Profi engines and neither one uses beryllium.
chiefss
 
Posts: 611
Joined: Sun Sep 30, 2007 1:22 pm
Location: Bremerton, WA

Postby jocondor » Mon Feb 08, 2010 6:23 am

Thanks a lot for your replies!

Can someone suggest me the best mix % methanol, % oil (what kind, Castor, Syntetic...) , and % nitro methane, to run this small engines? Consider that i don't use them to fly, but on vintage rc cars that were made for them.
jocondor
 
Posts: 8
Joined: Mon Feb 11, 2008 7:26 am

Postby chiefss » Mon Feb 08, 2010 12:00 pm

Small engines like higher nitro as they give their heat of faster. I would use at least 15% nitro. That said, the engine you are using never was meant to be used as a car engine so I would not get weird with the nitro content. I would use at least 20% oil and I use 100% castor in all my engines. 2 or 4 cycle.
chiefss
 
Posts: 611
Joined: Sun Sep 30, 2007 1:22 pm
Location: Bremerton, WA

Postby Frank Klenk » Mon Feb 08, 2010 6:46 pm

Good advice Chief, easy on the nitro and use good ole 20% castor.
Frank Klenk
 
Posts: 427
Joined: Sun Jan 05, 2003 7:03 pm
Location: Tillsonburg, Ontario, Canada

Postby playtimeover » Tue Nov 02, 2010 11:59 pm

Hi Klenk, yeah right. That's nice information. I think I can use some of that 20% castor in mine. :D
playtimeover
 
Posts: 3
Joined: Tue Nov 02, 2010 5:23 am
Location: Minneapolis


Return to Radio Control Glow Engines for Airplanes

Who is online

Users browsing this forum: No registered users and 9 guests

cron