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Brat 350 .21 NEED INFO

Old 12-21-2008, 02:36 PM
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jikkuria
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Default Brat 350 .21 NEED INFO

anybody know this motor? it is an old .21 from the late 80's or early 90's, and i've never heard of it. this one has an aluminium carb, 6 head screws, and a 9 fin head. any info is useful.

Paul
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Old 12-22-2008, 07:58 AM
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helivaguy
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Default RE: Brat 350 .21 NEED INFO

i had one that came in my 1/8 robbe buggy back in '92,i believe these engines were manuafctured in france then sent to canada for assembly,the onroad version had the name srt on the head.
Old 12-22-2008, 10:36 AM
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jikkuria
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Default RE: Brat 350 .21 NEED INFO

good to finally find som one who knows something about these. i have yet to fire this one up, but it has good compression and the piston/sleeve are in great shape. what kind of performance did that motor give?
Old 12-22-2008, 06:25 PM
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helivaguy
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Default RE: Brat 350 .21 NEED INFO

it was fast as hell back in the day for what it was,i also had it in a old pancar and it was insane in that.
gearing and pipe choice are a big factor also.
i still have the motor but it has a hairline crack inside the lower case.
Old 12-22-2008, 10:15 PM
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jikkuria
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Default RE: Brat 350 .21 NEED INFO

that sucks about the crack in the case, but it's great to hear that it has deacent power. i'll be running the motor in an ofna lx1, till spring and i can break in a vintage ron paris motor of mine. do you think that a dynamite 086 pipe and trinity 30% should work well for this motor?
Old 12-23-2008, 07:28 AM
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Default RE: Brat 350 .21 NEED INFO

the pipe should be great,not sure about 30%.
back in the day all we had was 10-15% nitro,guess you could try it even if you have to add 1 shim.
Old 12-23-2008, 11:25 AM
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jikkuria
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Default RE: Brat 350 .21 NEED INFO

i think it may have been run on 20-30% nitro, because i found it with 2 Rex 350's, 3 Ron Pairs Picco's, and this thing. the owner went to the nationals years ago and took 5th, so he may have been running a high nitro fuel. I got 2 of the Ron Paris Motors for $50 one isn't broken in yer, and the other is used with good compression.
Old 12-23-2008, 07:15 PM
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Default RE: Brat 350 .21 NEED INFO

I suspect this is what was originally called a Bluebird but sold in America as a Brat. I have a Bluebird .51 (an excellent ABC engine) and am waiting on the arrival of a Bluebird .28 aircraft engine (brand new off ebay). There's also a .25 and both the 25 and 28 used an AAC construction which is superior to ABC so your car engine may be AAC as well.
Old 12-23-2008, 09:48 PM
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jikkuria
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Default RE: Brat 350 .21 NEED INFO

what does AAC stand for?
Old 12-23-2008, 10:27 PM
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Default RE: Brat 350 .21 NEED INFO

AAC, Aluminum piston (high silicon ) running in an aluminum chrome cylinder.
Old 12-23-2008, 10:35 PM
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jikkuria
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Default RE: Brat 350 .21 NEED INFO

what are the benefits of AAC?
Old 12-23-2008, 10:40 PM
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Default RE: Brat 350 .21 NEED INFO

Better heat transfer (cooler running engine) longer lasting. Also a lighter engine.
Old 12-23-2008, 10:43 PM
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jikkuria
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Default RE: Brat 350 .21 NEED INFO

so, does any one have any data on this motor, like rpm, or part numbers if i can find some old parts.
Old 12-23-2008, 10:52 PM
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Default RE: Brat 350 .21 NEED INFO

I hate to sound negative but, you may not find parts for this engine. The Brat line was sold by World engines (Indy R/C) in Indiana in the 1980's. You may have luck by going through www.mecoa.com/ these guys accept used engines as trade in for new engines. I don't know what they do with the used trade ins.
Old 12-23-2008, 11:04 PM
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jikkuria
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Default RE: Brat 350 .21 NEED INFO

i just mean find some old used parts in good shape, but this one is in great shape. il''s post pics of the internals soon.
Old 12-24-2008, 12:02 AM
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jikkuria
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Default RE: Brat 350 .21 NEED INFO

here they are, pretty good shape, i notice the piston doesn't have the skirt like thing removed on one side like it usually does, any reasons?






Old 12-24-2008, 07:45 AM
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Default RE: Brat 350 .21 NEED INFO

Well at least now we know it's not AAC .
Old 12-24-2008, 10:35 AM
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jikkuria
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Default RE: Brat 350 .21 NEED INFO

i've never seen a circular port like that, but then again im only 16. are ports like that common?

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