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Search: Posts Made By: Chris W
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05-14-2019, 01:54 AM
Replies: 18
Views: 1,076
Posted By Chris W

A contrapiston will 'click' into position if the...

A contrapiston will 'click' into position if the vernier screw is backed off and the engine flipped over but its usually a one off event.
12-01-2018, 01:40 AM
Replies: 29
Views: 11,586
Posted By Chris W

https://www.westonuk.co.uk/Ed-By-West-/

https://www.westonuk.co.uk/Ed-By-West-/
11-14-2018, 12:49 PM
Replies: 91
Views: 6,790
Posted By Chris W

Hi Chris, I have already admitted...

Hi Chris,
I have already admitted that I dont know what color temperature the fence is ( Quote - "I admit that I dont know for certain the color temperature of the metal but if its...
10-30-2018, 02:07 PM
Replies: 124
Views: 13,734
Posted By Chris W

1. Engine Choice. I assume that you mean that a...

1. Engine Choice.
I assume that you mean that a 'steady run' equates to F2B stunt?
To my knowledge there has been no model diesel engine specifically made for F2B, ever.

This includes the still...
10-30-2018, 01:42 PM
Replies: 124
Views: 13,734
Posted By Chris W

So how does one time a run then? I have flown...

So how does one time a run then? I have flown diesel stunt and had the engine burp around running on fumes for many laps after a schedule and the temperature greatly effecting the length of the run.
10-30-2018, 01:36 PM
Replies: 91
Views: 6,790
Posted By Chris W

From the FMV treatise, cylinder walls near the...

From the FMV treatise, cylinder walls near the combustion chamber can run at 250C. Any higher and the oil vapourises.
Makes sense that the upper limit on any sliding surface must be lower than the...
10-22-2018, 04:24 PM
Replies: 22
Views: 3,494
Posted By Chris W

Any use for Sabre racing Ray? You know, plain...

Any use for Sabre racing Ray? You know, plain bearing, 2.5cc engine, racing round in circles kinda thing.
10-22-2018, 01:02 PM
Replies: 91
Views: 6,790
Posted By Chris W

Ageed, but calling the forum "Everything...

Ageed, but calling the forum "Everything Homogenous Charge Compression Ignition" is bit of a mouthfull!

And I would wager that calling it "Everything Diesel" more accurately echoes businesses...
10-21-2018, 03:49 PM
Replies: 91
Views: 6,790
Posted By Chris W

Where am I going to Ray? Is this an attempt at a...

Where am I going to Ray? Is this an attempt at a shut down? A thread that has spanned 4 years and extends to 4 pages with most of the posters still present for comment, in my opinion,should still...
10-19-2018, 09:50 AM
Replies: 91
Views: 6,790
Posted By Chris W

Dont disagree with you Ray, but does your...

Dont disagree with you Ray, but does your exampled engine pre ignite the mixture before the heat of compression gets a chance to?

Carbon deposits thaat would tend to build up on inside angles...
10-18-2018, 09:39 AM
Replies: 91
Views: 6,790
Posted By Chris W

Its in the premis put forward in post 1 .

Its in the premis put forward in post 1 .
10-17-2018, 07:21 PM
Replies: 91
Views: 6,790
Posted By Chris W

I admit that I dont know for certain the color...

I admit that I dont know for certain the color temperature of the metal but if its accepted that the heat of the baffle is enough to trigger ignition then what color would you pick?
10-17-2018, 01:47 PM
Replies: 91
Views: 6,790
Posted By Chris W

The inclusion of a red hot rib of metal on a...

The inclusion of a red hot rib of metal on a piston crown surely must assymetricaly expand the piston and effect a lapped seal too.
09-14-2018, 10:15 PM
Replies: 91
Views: 6,790
Posted By Chris W

Lou, are you asking if diesel fuel oxides causing...

Lou, are you asking if diesel fuel oxides causing heat and a source of light?

Kinda think it would.
09-09-2018, 02:33 PM
Replies: 124
Views: 13,734
Posted By Chris W

Getting back to the original question of what...

Getting back to the original question of what attracts people to diesel engines in model airplanes.
I can see three major advantages that diesels have that would attract niche modellers.

You can...
09-04-2018, 07:13 PM
Replies: 91
Views: 6,790
Posted By Chris W

I think that it was on the Parra web site that...

I think that it was on the Parra web site that claimed that a dead flat or a 0.3mm combustion chamber step to the contra gave the best runs.

The late and great Pe Rievers was also on record as...
09-04-2018, 06:03 PM
Replies: 91
Views: 6,790
Posted By Chris W

Hi Chris, is it the inclusion of the...

Hi Chris,
is it the inclusion of the squish band that gives smoother running or the inclusion of a concave shape?

Always thought that the terminolgy of a "squish band" is misapplied in...
09-04-2018, 04:01 PM
Replies: 91
Views: 6,790
Posted By Chris W

Hi Lou, long time since I have commented in...

Hi Lou,
long time since I have commented in this thread but since many of the responders are still around I don't feel so bad.
Question, define "silliness."

Pascals law (which seems to be the...
08-27-2018, 12:43 AM
Replies: 124
Views: 13,734
Posted By Chris W

In regards to ringed pistons not working well as...

In regards to ringed pistons not working well as diesels, I wonder if a purpose built modern ringed engine might actually work rather well.
For those who know a bloke called Lauri Malilla, he makes...
08-12-2018, 09:50 PM
Replies: 124
Views: 13,734
Posted By Chris W

Perhaps its the extra twiddle screw on top that...

Perhaps its the extra twiddle screw on top that makes them seems worthy of male attention, that and they have always seemed to be heavier than their glow equivalent and again, feel more...
01-16-2017, 08:06 PM
Replies: 39
Views: 3,573
Posted By Chris W

If the temperature is -15C and the engine is...

If the temperature is -15C and the engine is tight from being new then perhaps the old heat gun trick may work?
12-16-2016, 01:33 AM
Replies: 11
Views: 1,567
Posted By Chris W

Nice engine Ray.

Nice engine Ray.
10-31-2016, 12:02 PM
Replies: 11
Views: 1,216
Posted By Chris W

I would be leery of 'growing' the piston into out...

I would be leery of 'growing' the piston into out of round - both due to inconsistent grain structure and the presence of two (relatively) large gudgeon pin holes, internal webbing under the crown...
10-20-2016, 01:37 PM
Replies: 19
Views: 1,848
Posted By Chris W

"Could it b a fu problem?" I want to know...

"Could it b a fu problem?"

I want to know what a "F.U." problem is ?

I know the bikie bar version ............
10-16-2016, 02:14 PM
Replies: 19
Views: 1,848
Posted By Chris W

"The byproducts in the exhaust of a running...

"The byproducts in the exhaust of a running alcohol (glow) are water vapor and CO2. The exhaust residue on your glow powered plane is loaded with unburned fuel thus it is clear. The exhaust of...
Showing results 1 to 25 of 49
 


 
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