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Search: Posts Made By: dbspl
Showing results 1 to 25 of 46
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Forum: Gas Engines
05-24-2012, 11:10 AM
Replies: 47
Views: 14,738
Posted By dbspl

RE: NGH 9cc Engine input???

I bought a GT9 a couple of weeks ago and put it in a Phoenix Decathlon. I ran about 4 tanks through it on the ground before I mounted it in the plane. I got a chance this weekend to maiden it. I...
Forum: Questions and Answers
05-21-2012, 09:58 AM
Replies: 13
Views: 1,307
Posted By dbspl

RE: DLE 30 with IBEF

It sounds like the same problem I'm having. My DLE 30 won't hold a reliable idle. Midrange and top end are great, but anything less than about 2500 rpm and the engine will eventually die. Mine has...
Forum: RC Electric On-Road vehicles, race cars and more
07-07-2011, 03:47 PM
Replies: 28
Views: 2,985
Posted By dbspl

RE: neodymium price hike

From what I understand, "known reserves" means it is known to be in the ground and exist in concentrations high enough to be economical to extract. Anyway, I have attached the graph from the USGS...
Forum: RC Electric On-Road vehicles, race cars and more
07-07-2011, 01:11 PM
Replies: 28
Views: 2,985
Posted By dbspl

RE: neodymium price hike

China has about 35% of the known reserves. I would call that a large percentage. Russia is in around 20%, and the US at 13%.

I did read an article the other day that Japan had discovered a...
Forum: RC Electric On-Road vehicles, race cars and more
07-07-2011, 09:32 AM
Replies: 28
Views: 2,985
Posted By dbspl

RE: neodymium price hike

The concern isn't only about price, but whether we will be able to even get the material in the futre. China has a large percentage of the world's reserves and have under priced most of the...
Forum: RC Radios, Transmitters, Receivers, Servos, gyros
09-23-2010, 07:20 PM
Replies: 4
Views: 901
Posted By dbspl

RE: Receiver sensitivity

The specifications listed in the article are very confusing. In the list of receiver specifications some are repeated for no apparent reason (dual receiver circuit?). The receiver sensitivity is one...
Forum: AMA Discussions
08-30-2010, 11:58 PM
Replies: 25
Views: 3,689
Posted By dbspl

RE: Take The AMA Survey

As I read this thread, I can't help but picture a group of older guys sitting around a room debating why younger kids aren't interested in model aviation; but never really having the prior experience...
Forum: Gas Engines
08-21-2010, 07:24 PM
Replies: 1,389
Views: 163,835
Posted By dbspl

RE: MT70CC TWIN

I've had mine for a few weeks now and just recently decided to run it on the test stand. Mine is the MT70S version. Out of the box, the bearings seemed too tight and there wasn't much compression. I...
Forum: RC Warbirds and Warplanes
08-16-2010, 10:08 AM
Replies: 29
Views: 3,459
Posted By dbspl

RE: Sunday morning thoughts about flying, landing....

Critical Altitude = Minus six feet.
Forum: Gas Engines
08-16-2010, 02:54 AM
Replies: 45
Views: 23,481
Posted By dbspl

RE: Build your own gas engine from a

I received an email from MTengines they were going to offer their 35 cc engine in a kit. By the breakdown in the picture they provided it doesn't look like it would be too difficult to assemble. ...
Forum: AMA Discussions
08-08-2010, 03:50 PM
Replies: 453
Views: 36,041
Posted By dbspl

RE: AMA forum censorship

Maybe (somewhere) they all got the idea you would interpret their silence as agreeing with you?

dbspl
Forum: AMA Discussions
08-08-2010, 11:36 AM
Replies: 453
Views: 36,041
Posted By dbspl

RE: AMA forum censorship

Given the OP's attitude in this thread, I find it hard to believe there isn't a lot more to the story than simply posting to a thread on the AMA website and having it deleted and the thread locked. ...
Forum: ARF or RTF
07-09-2010, 09:30 PM
Replies: 13
Views: 2,065
Posted By dbspl

RE: End of inexpensive ARF's is coming.....

China is a larger exporter than the United States. As a matter of fact, so is Germany (pretty impressive when you consider their size).

China also enjoys a large trade surplus. They export...
Forum: ARF or RTF
07-09-2010, 07:08 PM
Replies: 13
Views: 2,065
Posted By dbspl

RE: End of inexpensive ARF's is coming.....

While other countries might re-think manufacturing inside China, increased wages inside the country will only spark the consumption of Chinese made goods by the Chinese. As their midde class grows,...
Forum: RC Radios, Transmitters, Receivers, Servos, gyros
06-10-2010, 06:41 PM
Replies: 175
Views: 17,526
Posted By dbspl

RE: 2.4 Glitches - It Does Happen!

dbcisco,

Dirtybird is right. I think you'll find that it's much harder to jam a signal than you think. But okay, I'll play along, and I have a 2.4G spectrum analyzer.

Assuming I've attached...
Forum: RC Radios, Transmitters, Receivers, Servos, gyros
06-09-2010, 09:34 AM
Replies: 175
Views: 17,526
Posted By dbspl

RE: 2.4 Glitches - It Does Happen!

This is simply not correct. A 10 watt amplifier (I assume there's a loudspeaker attached somewhere) has 10 dB less output than a 100 watt amp. If you measure 100 dB SPL, 1 meter away from the...
Forum: RC Radios, Transmitters, Receivers, Servos, gyros
06-08-2010, 09:28 PM
Replies: 175
Views: 17,526
Posted By dbspl

RE: 2.4 Glitches - It Does Happen!

"Not talking about loss off signal at all, rather the intereference. At half the maximum range of a 1 watt TX, a 32mw TX right next to the receiver will have the same signal strength... and interfere...
Forum: RC Radios, Transmitters, Receivers, Servos, gyros
06-08-2010, 08:44 PM
Replies: 175
Views: 17,526
Posted By dbspl

RE: 2.4 Glitches - It Does Happen!

The strength of a 1 watt signal at "half the maximum distance" (whatever that is) will be ALOT less than 32 milliwatts.

As Rodney pointed out, the radiated energy decreases with the square of...
Forum: RC Radios, Transmitters, Receivers, Servos, gyros
06-08-2010, 04:37 PM
Replies: 175
Views: 17,526
Posted By dbspl

RE: 2.4 Glitches - It Does Happen!

The decibel is a power ratio, it has no absolute value unless a reference is specified. In the above example, 32 mWatts was the reference. The output gain of a 1 watt transmitter referenced to 32...
Forum: RC Radios, Transmitters, Receivers, Servos, gyros
06-08-2010, 12:22 PM
Replies: 175
Views: 17,526
Posted By dbspl

RE: 2.4 Glitches - It Does Happen!

A 1 watt transmitter has 14.9 dB higher output than a 32 mWatt transmitter. It has nothing to do with being "twice as loud", but it does have everything to do with the square of the distance from...
Forum: RC Radios, Transmitters, Receivers, Servos, gyros
06-07-2010, 09:21 PM
Replies: 175
Views: 17,526
Posted By dbspl

RE: 2.4 Glitches - It Does Happen!

If you consider there are 50 dedicated channels in the 72 MHz band (total approx. 1 MHz), and the 2.4 GHz band is 85 MHz wide; you would think that if the 2.4 band were split up into dedicated...
Forum: RC Radios, Transmitters, Receivers, Servos, gyros
06-07-2010, 03:53 PM
Replies: 175
Views: 17,526
Posted By dbspl

RE: 2.4 Glitches - It Does Happen!

I'm not sure I follow this. There are 83 available channels in the 2.4Ghz band. Are you saying the data rate is reduced on just one of those channels, or the entire 2.4Ghz band? It would seem to...
Forum: Gas Engines
05-28-2010, 12:26 PM
Replies: 5
Views: 1,017
Posted By dbspl

RE: What happened to the 42% Zeus

I just got one recently, so I know they are available. I would call or email them.

dbspl
Forum: ARF or RTF
05-26-2010, 11:07 AM
Replies: 10
Views: 5,746
Posted By dbspl

RE: E-Flite PT-17 Stearman HELP please !!

Well...after reading this thread, at least I feel a little better knowing I'm not alone. I've had exactly the same problem. The first couple of flights I was just happy to get the plane down. The...
Forum: The Clubhouse
05-12-2010, 06:52 PM
Replies: 104
Views: 10,357
Posted By dbspl

RE: spelling and grammar check

Langauge?
Showing results 1 to 25 of 46
 
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