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Search: Posts Made By: PARDAL
Showing results 1 to 25 of 63
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Forum: Gas Engines
11-14-2015, 06:35 PM
Replies: 1,678
Views: 462,082
Posted By PARDAL

Just numbers

Just numbers
Forum: Gas Engines
11-12-2015, 05:39 AM
Replies: 1,678
Views: 462,082
Posted By PARDAL

I said 'specific gravity of air AT SEA LEVEL'...

I said 'specific gravity of air AT SEA LEVEL' meaning air density at sea lavel. I understand environmental conditions as the fators temperature, air pressure, relative umidity... these factors...
Forum: Gas Engines
11-11-2015, 06:43 PM
Replies: 1,678
Views: 462,082
Posted By PARDAL

Air specific gravit play an important hole but we...

Air specific gravit play an important hole but we must remember the propeller design, resulting i higher or lower coeficients of power and thrust. These coeficients may make more diference than...
Forum: Gas Engines
07-23-2015, 09:01 PM
Replies: 1,678
Views: 462,082
Posted By PARDAL

ole.foll, I hope this aproach be usefull for You....

ole.foll, I hope this aproach be usefull for You.

The engine must be operated within a speed limit for you to get decente power from it.
For this engine they recomend 18x8 => 19x10 two blade...
Forum: Gas Engines
07-19-2015, 07:12 PM
Replies: 1,678
Views: 462,082
Posted By PARDAL

The gaskets were so sticked to each other I...

The gaskets were so sticked to each other I damaged them triyng to separete. Made new ones.
I flew my Seagull Miles Sparowhawk 62 cc today with the NGH 38 and it ran amazingly well.
OOps, sunday...
Forum: Gas Engines
07-09-2015, 04:05 PM
Replies: 1,678
Views: 462,082
Posted By PARDAL

I made new gaskets and disassembled the carb to...

I made new gaskets and disassembled the carb to work them.
whren disassembling I noted lots of oil in the contact surfaces. The oil should not be there.
I found two gaskets, both in the same side...
Forum: Gas Engines
07-08-2015, 08:45 PM
Replies: 1,678
Views: 462,082
Posted By PARDAL

It will. I will take care the gaskets and use...

It will. I will take care the gaskets and use another CDI. Nothing else to go wrong, I hope.
Forum: Gas Engines
07-08-2015, 07:02 PM
Replies: 1,678
Views: 462,082
Posted By PARDAL

Tks, ALFIEV, sometime we forget the basics. I...

Tks, ALFIEV, sometime we forget the basics. I saned such leaks in lots of glow engines not iddling and I didnt realyse this obvious solution.
Forum: Gas Engines
07-05-2015, 05:54 PM
Replies: 1,678
Views: 462,082
Posted By PARDAL

The biggest problem I'm facing is ignition module...

The biggest problem I'm facing is ignition module that fail in advancing the spark.
Say, You set the spark 'staticaly' at 28° BTDC and the module does not delay the spark at low rpm, below 5000....
Forum: Gas Engines
03-25-2015, 03:18 PM
Replies: 1,678
Views: 462,082
Posted By PARDAL

I use mine connected to the center nipple in the...

I use mine connected to the center nipple in the back plate of crank case.
Others to the outer one. It seens make not relevant difference.
Forum: Questions and Answers
03-07-2015, 04:21 PM
Replies: 96
Views: 30,747
Posted By PARDAL

The Kid is trying an scientific approach to the...

The Kid is trying an scientific approach to the question, I applaud him.
But we , modelers must steek in the basic, using the results those Kids tests gave us. Thanks them.
1- This fator is basic....
Forum: Gas Engines
03-01-2015, 06:12 AM
Replies: 1,678
Views: 462,082
Posted By PARDAL

Here are pics of NGH 38 in a Miles Sparowhawk...

Here are pics of NGH 38 in a Miles Sparowhawk cowling, it's was my option.
It is not so bad.
You can see the originas stack.
Forum: Gas Engines
02-28-2015, 04:26 PM
Replies: 1,678
Views: 462,082
Posted By PARDAL

Discus-fly, try to rotate the engine clockwise...

Discus-fly, try to rotate the engine clockwise some degrees, may be the custon exhaust stack fit inside the cowling than You make an extention with teflon tube to the boton-center just ahead of fire...
Forum: Gas Engines
02-28-2015, 07:54 AM
Replies: 1,678
Views: 462,082
Posted By PARDAL

" Still wondering about the possibility of using...

" Still wondering about the possibility of using this engine in a Flair Tiger Moth. Whilst the engine does fit, the supplied exhaust stub would fowl the cowling so need to turn the exhaust through 90...
Forum: Gas Engines
02-28-2015, 02:08 AM
Replies: 1,678
Views: 462,082
Posted By PARDAL

(( Still wondering about the possibility of using...

(( Still wondering about the possibility of using this engine in a Flair Tiger Moth. Whilst the engine does fit, the supplied exhaust stub would fowl the cowling so need to turn the exhaust through...
Forum: Gas Engines
01-25-2015, 03:14 PM
Replies: 1,678
Views: 462,082
Posted By PARDAL

Pardon, I made an mistake in my previous post:...

Pardon, I made an mistake in my previous post: One tooth in the camshaft means 360 degree / 30 tooth = 12 degree, but this is in the camshaft.
The crank turns twice as much so the advance relative...
Forum: Gas Engines
01-24-2015, 06:26 PM
Replies: 1,678
Views: 462,082
Posted By PARDAL

Concerning the cams pics posted by Simone 76, I...

Concerning the cams pics posted by Simone 76, I estimate the new cam is advanced 4 degree relative to the original and is not so high as the original.
If you advance or retard the cam one tooth you...
Forum: Gas Engines
09-29-2014, 01:27 AM
Replies: 1,678
Views: 462,082
Posted By PARDAL

Nope. Eletronicaly one event can not be...

Nope.
Eletronicaly one event can not be advanced but retarded from one moment.
You set maximun 28° and it delay to 5 degree at low rpm.
The fig is only an aproximation of what happens.

when we...
Forum: Gas Engines
09-28-2014, 06:11 PM
Replies: 1,678
Views: 462,082
Posted By PARDAL

A timing gauge is a good tool, but with it we...

A timing gauge is a good tool, but with it we locate the advance angle, say, 28 degree, at ZERO rpm.
It was supposed the spark to retard to 5 degrre BTDC at 2000 rpm and no retard above 5000. It is...
Forum: RC Warbirds and Warplanes
08-26-2014, 11:54 PM
Replies: 425
Views: 85,881
Posted By PARDAL

Chris Nicastro sayd " The blocks are hit or miss...

Chris Nicastro sayd " The blocks are hit or miss and I cited this as well in my build. All of the wood blocks are suspect DONT TRUST THE WOOD SUPPLIED IN THIS ARF! Every bit of plywood that is...
Forum: Engine Conversions
08-10-2014, 12:50 PM
Replies: 29
Views: 13,804
Posted By PARDAL

I got the point. Searching Just Engines I found...

I got the point.
Searching Just Engines I found a review "A.S.P. 'Series 3' 1.80fs - RCM&E" of which I took an extract.
Quote.
The single ring piston is a permanent die casting from alloy, is of...
Forum: Engine Conversions
08-09-2014, 03:38 PM
Replies: 29
Views: 13,804
Posted By PARDAL

dogshome, I'm really curious about this bearing...

dogshome, I'm really curious about this bearing (or bush).
If, i designed such a bearing, my Machine Elements professor would reprove me and whip me to death. Ugh.
The next opportunity You get,...
Forum: Engine Conversions
08-09-2014, 05:34 AM
Replies: 29
Views: 13,804
Posted By PARDAL

The engine is new, the spark was advanced ok and...

The engine is new, the spark was advanced ok and it was not petrol, was ethylic alcool.
The hole at that position, pointing up to piston, was in a position where the oil film must be the strongest...
Forum: Engine Conversions
08-08-2014, 03:14 PM
Replies: 29
Views: 13,804
Posted By PARDAL

I converted my 180 to ignition burning ethanol...

I converted my 180 to ignition burning ethanol 10:1 sintetic.
After run in I inspected and found everythink well oiled an clean, no carbon.
Measuring the parts I noted the crank pin marked and the...
Forum: Gas Engines
08-07-2014, 06:48 PM
Replies: 1,678
Views: 462,082
Posted By PARDAL

There is no guaranty the motor you are going to...

There is no guaranty the motor you are going to buy is balanced, no matter the brand. Better search info before buy.
Showing results 1 to 25 of 63
 
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