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Search: Posts Made By: Mr Cox
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01-27-2017, 10:04 AM
Replies: 1,856
Views: 130,989
Posted By Mr Cox

Looks like the Lite Machine helicopter version...

Looks like the Lite Machine helicopter version (V7) of the Norvel .074?

I have one too which I bought in order to have a spare liner, they where down to $19 each at the end I think (about 10 years...
06-03-2016, 01:57 PM
Replies: 1,856
Views: 130,989
Posted By Mr Cox

My own projects are just so slow in their...

My own projects are just so slow in their progress in comparison to some of the threads here, I don't know how you guys find the time. Between my daytime job and home-time chores, there has not been...
06-02-2016, 10:46 PM
Replies: 1,856
Views: 130,989
Posted By Mr Cox

Speaking of units, are your control throws in...

Speaking of units, are your control throws in degrees (°) or really a percentage (%) of something?

With a new plane I like to start with about 15° throws on everything, measuring throws in cm (or...
03-25-2016, 11:59 AM
Replies: 1,856
Views: 130,989
Posted By Mr Cox

I'm glad to se that you've sorted it out now. :) ...

I'm glad to se that you've sorted it out now. :)

A .010 racer you say?
I started one a few years ago, wanted to convert the Nemesis (micro) by Graupner. I have put in a carbon rod in the wing and...
03-25-2016, 12:54 AM
Replies: 1,856
Views: 130,989
Posted By Mr Cox

No, that's not the way to use the program. You...

No, that's not the way to use the program. You should follow the frequency changes of one line. These changes in frequency comes from the doppler effect (plus changes in rpm from a dive of course).
...
03-24-2016, 11:25 AM
Replies: 1,856
Views: 130,989
Posted By Mr Cox

From the screen dump it doesn't look like you are...

From the screen dump it doesn't look like you are using the program in the right way. Here is what it should look like, you want the change of frequency in one single line (this gives you the doppler...
03-18-2016, 01:37 PM
Replies: 1,856
Views: 130,989
Posted By Mr Cox

I did some "googling" on the Gemfan props, still...

I did some "googling" on the Gemfan props, still haven't found any rpm rating, but lots of threads and youtube videos about failing props...

I will not use them myself...

Take care!
...
03-18-2016, 09:34 AM
Replies: 1,856
Views: 130,989
Posted By Mr Cox

Yes, electric props for high rpm applications are...

Yes, electric props for high rpm applications are probably fine, those electric motors can certainly turn some high rpms. With Graupner and APC you get recommended maximum rpm, while with cox props...
03-18-2016, 07:49 AM
Replies: 1,856
Views: 130,989
Posted By Mr Cox

What are the rpm ratings of these props?

What are the rpm ratings of these props?
02-23-2016, 04:17 AM
Replies: 1,856
Views: 130,989
Posted By Mr Cox

Well, the ordering number or catalog number was...

Well, the ordering number or catalog number was always the same, as far as I know, so #130 only tells you that it is a TD .010, it doesn't tell anything about what year it was made....

I think the...
02-20-2016, 02:23 PM
Replies: 1,856
Views: 130,989
Posted By Mr Cox

With a canopy one can quite easily hide the...

With a canopy one can quite easily hide the torque rods and servo. Here's how I did it on my SWR;

http://www.rcuniverse.com/forum/attachment.php?attachmentid=2148516 ...
02-16-2016, 08:44 AM
Replies: 1,856
Views: 130,989
Posted By Mr Cox

To me it looks a typical aluminium piston with a...

To me it looks a typical aluminium piston with a second machining at the top the top part. Why would it be made from steel?

Maybe I just don't understand the langue, but the text "liner inside the...
02-16-2016, 05:17 AM
Replies: 1,856
Views: 130,989
Posted By Mr Cox

Don't really understand what you are talking...

Don't really understand what you are talking about there, it looks like regular stuff to me?

Hmm, it doesn't look so good, to be honest, is there any pinch at TDC?
Looks like they over did it a...
01-24-2016, 02:51 AM
Replies: 1,856
Views: 130,989
Posted By Mr Cox

The Picco engines are great, the P-zero is indeed...

The Picco engines are great, the P-zero is indeed marked as .085cc which makes it a .052 inch^3 engine (?). So only a hair larger than a a true .049, but with a power to match even much larger...
01-24-2016, 02:12 AM
Replies: 1,856
Views: 130,989
Posted By Mr Cox

I have never seen any sleeve channel like that...

I have never seen any sleeve channel like that before, are you sure it is not simply a reflektion or optical illusion?

The internet is full of pictures of all kinds of strange mods, but not all of...
01-17-2016, 11:43 AM
Replies: 1,856
Views: 130,989
Posted By Mr Cox

That's a real Franken engine then. ;) Guess the...

That's a real Franken engine then. ;)
Guess the header and the larger carb all add up. Any websites most likely cite the weight including muffler, you can't trust what you read on the web...

If...
01-17-2016, 11:05 AM
Replies: 1,856
Views: 130,989
Posted By Mr Cox

That doesn't sound right, did you weight your TT...

That doesn't sound right, did you weight your TT .10 engine, or take a peak into the exhaust port?

The regular TT .10GP engine is of ABN type, it weights 133g (complete with glowplug and prop nut,...
01-16-2016, 01:38 AM
Replies: 1,856
Views: 130,989
Posted By Mr Cox

Yes, one usually get what one pays for... For...

Yes, one usually get what one pays for...
For me I guess the high weight put me off a bit too and I went with the ASP .12 instead.

I still think that the power curve is odd though, very constant...
01-15-2016, 11:32 AM
Replies: 1,856
Views: 130,989
Posted By Mr Cox

At the risk of sounding negative or beating a...

At the risk of sounding negative or beating a dead horse etc. Don't take this the wrong way but I don't think that it is doing very well...?

Sure, it makes a lot of noise, but 0.18hp (134W) at...
01-09-2016, 01:57 PM
Replies: 1,856
Views: 130,989
Posted By Mr Cox

I haven't said anything about unloading or not......

I haven't said anything about unloading or not...

The 480rpm difference might simply be down to the extra nitro, or a difference between two different engines considering their quality control.
...
01-09-2016, 11:40 AM
Replies: 1,856
Views: 130,989
Posted By Mr Cox

Your number for the APC 6.5x5 sounds about right....

Your number for the APC 6.5x5 sounds about right. From my notes I have it at around 18500rpm on that prop with the stock muffler and 10% nitro. This, according to APC data, corresponds to more than...
01-09-2016, 06:06 AM
Replies: 1,856
Views: 130,989
Posted By Mr Cox

Those are rather disappointing values in terms of...

Those are rather disappointing values in terms of power...

I suggest running the engine on the same props with open face, or a regular muffler, first to have something to compare with.

On my...
01-08-2016, 09:00 AM
Replies: 1,856
Views: 130,989
Posted By Mr Cox

I'm not sure what you are after here. There is a...

I'm not sure what you are after here. There is a lot of different numbers and some random trial and error with pipes and props...?

The stock timing on my two ASP .12 engines are around 150° only....
11-05-2015, 01:59 PM
Replies: 1,856
Views: 130,989
Posted By Mr Cox

I don't think that more pressure will help much,...

I don't think that more pressure will help much, the key is to have less difference in the fuel level position when plane is horisontal or vertical.

Sounds like the tank is simply too far from...
11-05-2015, 10:53 AM
Replies: 1,856
Views: 130,989
Posted By Mr Cox

Well, I think that first we need to "agree" on...

Well, I think that first we need to "agree" on how percentages are calculated... :rolleyes:

In the metric system 1% = 1/100
Så 3,568/ 23,264 = 0.153 which is equal to 15.3%
Showing results 1 to 25 of 117
 


 
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