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I know I知 an odd duck...

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I know I知 an odd duck...

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Old 03-15-2019, 12:03 PM
  #31  
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Originally Posted by SlowLST2 View Post
I don’t like Saito or OS 4-strokes. They don’t have the rpm capability that Enya has... the Golden Knight paint scheme is sharp looking, but the front camshaft is what makes those engines ugly. Nice running engines, but not as aesthetically pleasing for me.

I like weird stuff though...
I wanted.. 4 stoke torque.. not rpm's,, short take-off's... and doing loops...
and reason for 3 bladed... Bite'.
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Old 03-15-2019, 12:38 PM
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Some 4-strokes put out good torque and horsepower, but can run faster. The Enya 46-4C was the strongest 7.5cc 4-stroke for a long time after it came out and is still tough to beat today. The 60-4C was the top of the heap until the .72 and .82 size 4-strokes came out (still a 10cc sized crankcase).

As with anything in a hobby such as ours, as long as it tickles your fancy... who cares?

YMMV.
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Old 03-15-2019, 12:58 PM
  #33  
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I used what was used at the flying field... proven , dependable.. might not ( is not ) the best...

nothing to prove.. then or now.

< deleted >

purchase what you may.. I was paid to build real engines... ..

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Old 03-15-2019, 01:22 PM
  #34  
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my advice..
build your own.. not something off a shelf... then crow about it.

my stupid opinion.
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Old 03-15-2019, 01:30 PM
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Nevermind.

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Old 03-16-2019, 12:13 AM
  #36  
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I have like 4 or 5 zenoah heads laying around. Maybe 3 crank cases.

I was hoping to run fuel injection on mine, but my source for throttle body fell through.
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Old 03-16-2019, 08:02 AM
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I ran a Zenoah 260... on 110 octane... with AMSoil 2 cycle oil.. in my 1/4 scale nascar ( Pro1) stock car... raced about 5 years...

1/10 mile blacktop banked oval... stopped in 2015..

rebuild every 2 months... with a complete vacuum block leak down test....
14,000 rpm's.. are hard on piston rings.. and crankshaft seals..
yes car had a digital rpm recorder...
and the race was 30 minutes to 1 hour each. with refueling stops...
1/4 scale has drive thru pit lanes.... for fuel refilling and tire changes.. mostly right rear.
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Old 03-16-2019, 10:14 AM
  #38  
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I get about 17,000 rpm on my 34cc. People always argue about correct oil for these high rpm engines.

I mostly use amsoil to mix. Some people clean synthetic is too slippery at those high rpms.
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Old 03-16-2019, 10:28 AM
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The oil used is only critical for breaking in. Synthetic oil in ringed engines makes it take longer for the ring to seat. For gasoline fueled model engines, it’s best to use mineral oil for the first gallon or two for the rings to seat and wear in to the cylinder. After that, synthetic tends to be better as it helps keep carbon deposits to a minimum - provided a quality synthetic oil is used.

And FWIW - the types of synthetic oils used for mixing with gasoline specifically are very different than the synthetic oils specifically formulated for methanol (alcohol) engines or synthetics capable of mixing with gas AND alcohols. Just because an oil is marked as “synthetic” doesn’t mean it’s the best. All synthetic oils are either based on plant based oil esters (POE), petroleum stocks, or glycols (PAG).
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Old 03-16-2019, 12:04 PM
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remember my 1/4 scale car... is 30 pounds ... large frontal area... and a tall rear spoiler....
welded steel tube frame.. solid rear axle.. lots of stagger in rear tires..

and the banking will bog-down the engine so torque is needed.. not max rpm's..

synthetic oils... I have used them since 1977.... in everything.
in fact for many years .. I was an AMZOIL dealer..
before they changed there name to AMSOIL..
history...
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Old 03-16-2019, 12:17 PM
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My 1/5 buggy is around 30 lbs, 5ive-t is near 45 pounds.
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Old 03-16-2019, 12:20 PM
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Originally Posted by Dave_S View Post
My 1/5 buggy is around 30 lbs, 5ive-t is near 45 pounds.
I had no idea they were that heavy.....

our rules were 30 pounds minimum... so 33 was a tank
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Old 03-16-2019, 12:27 PM
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Ever hear of this guy?
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Old 03-16-2019, 12:34 PM
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Originally Posted by chuck_thehammer View Post
I had no idea they were that heavy.....

our rules were 30 pounds minimum... so 33 was a tank
heavy motor, thick big aluminum chassis, big wheels and tires.

There is a lot more material than the tube frame chassis.

I run 1/4 scale slicks on my trucks sometimes. Only place I know to get those is Bishop Racing Products.
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Old 03-16-2019, 12:51 PM
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Originally Posted by Dave_S View Post
heavy motor, thick big aluminum chassis, big wheels and tires.

There is a lot more material than the tube frame chassis.

I run 1/4 scale slicks on my trucks sometimes. Only place I know to get those is Bishop Racing Products.
only place that makes them.. $50.. and up.. each.. even custom sizes if needed...

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