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Search: Posts Made By: wjcalhoun
Showing results 1 to 25 of 500
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Forum: ARF or RTF
08-12-2014, 04:17 AM
Replies: 8,173
Views: 874,657
Posted By wjcalhoun

Al is correct; the 17x6 will fly her well - to...

Al is correct; the 17x6 will fly her well - to about 65-68mph. The 15x10 gets about 9800rpm in the air (Eagletree monitor), and about 8600 on the ground at sea level.
You are also correct on the...
Forum: ARF or RTF
08-11-2014, 12:29 PM
Replies: 8,173
Views: 874,657
Posted By wjcalhoun

Guys - think about the 15x10 as well; more speed,...

Guys - think about the 15x10 as well; more speed, more responsiveness. Still unlimited vertical on a well tuned DLE20
Bill
Forum: ARF or RTF
07-18-2014, 08:41 AM
Replies: 8,173
Views: 874,657
Posted By wjcalhoun

Jeremy - looks great. Short, positive control...

Jeremy - looks great. Short, positive control linkages.
Forum: ARF or RTF
07-13-2014, 01:30 PM
Replies: 8,173
Views: 874,657
Posted By wjcalhoun

Hi Al: I do have both the R70 and the R90. ...

Hi Al:
I do have both the R70 and the R90. Which i fly more is hard to quantify. I love the R90 for a relaxing day of 'sport' flying. The colors and patterning present well against most skies (in...
Forum: ARF or RTF
07-11-2014, 12:58 PM
Replies: 8,173
Views: 874,657
Posted By wjcalhoun

Al: Sorry to here of the demise of your R70. ...

Al:
Sorry to here of the demise of your R70.
How long until the new one is flying?

BIll
Forum: ARF or RTF
07-01-2014, 06:18 AM
Replies: 8,173
Views: 874,657
Posted By wjcalhoun

Hi Jeremy I don't know of an online calculator....

Hi Jeremy
I don't know of an online calculator.
RPM x pitch (in inches) / 12 (inches/ft) = feet per minute.
Divide that number by 5280 for miles per minute; multiply that result by 60 for miles...
Forum: ARF or RTF
06-30-2014, 04:32 AM
Replies: 8,173
Views: 874,657
Posted By wjcalhoun

Teckbot - a couple of things: 1. The...

Teckbot - a couple of things:

1. The details are important when reporting speed. Are you talking straight and level, maintained speed, or max speed coming out of a dive? Is that a radar gun, or...
Forum: ARF or RTF
06-28-2014, 05:04 AM
Replies: 8,173
Views: 874,657
Posted By wjcalhoun

RoyR - sorry to hear about your loss. i think...

RoyR - sorry to hear about your loss. i think most of us recognize that most crashes are pilot error. i can count on the fingers of one hand the planes i have lost due to a mechanical, but of course...
Forum: ARF or RTF
06-24-2014, 08:13 AM
Replies: 614
Views: 85,567
Posted By wjcalhoun

Bob - very elegant engineering solution. It puts...

Bob - very elegant engineering solution. It puts your skewers directly in tension should the main LG be pulled aft. Great solution. m_gutzmer - my 50cc LG failed on an irregularity in a mowed St...
Forum: ARF or RTF
06-22-2014, 12:48 PM
Replies: 614
Views: 85,567
Posted By wjcalhoun

Hi MIke: Radio Futaba 617. Dual LiFe...

Hi MIke:
Radio Futaba 617. Dual LiFe batteries, each 3200 mAh for flight surfaces. Dual switches (MIracle). One life battery 2100 mAh for ignition with Valley View kill switch. Hitec HS7955TG...
Forum: ARF or RTF
06-19-2014, 04:08 PM
Replies: 8,173
Views: 874,657
Posted By wjcalhoun

welcome lean run warbird - the 50cc version...

welcome lean run

warbird - the 50cc version (R90) is really nice, but more tame than the R70. And the R70 is more tame than the R57 (I understand).
The R90 builds heavier than most 50cc...
Forum: ARF or RTF
06-16-2014, 08:30 AM
Replies: 614
Views: 85,567
Posted By wjcalhoun

Hi Guys I had an interesting thing happen at...

Hi Guys
I had an interesting thing happen at the field yesterday. Four flights on my R90/DLE55RA. On the last, i got her into a very nice (left) belly-in knife edge spin, about 60-70 rpm;...
Forum: ARF or RTF
06-13-2014, 11:13 AM
Replies: 8,173
Views: 874,657
Posted By wjcalhoun

Roy R - I'm guessing that your #7459 was directed...

Roy R - I'm guessing that your #7459 was directed at me, so I'll respond. I'm not arguing, or picking on you, but I think you misrepresented the tone of the comments about modifications.

#1, we...
Forum: ARF or RTF
06-10-2014, 09:19 AM
Replies: 8,173
Views: 874,657
Posted By wjcalhoun

Proline You obviously will decide for yourself,...

Proline
You obviously will decide for yourself, based on your flying style and aggressiveness how to set up your rudder and elevator. IMHO pull pull is probably the best solution for the R70 (like...
Forum: ARF or RTF
06-09-2014, 06:45 PM
Replies: 8,173
Views: 874,657
Posted By wjcalhoun

Proline: Think about setting up the rudder as a...

Proline:
Think about setting up the rudder as a pull-pull, rather than a push rod. A 2-56 rod will have a lot of flex, and therefore a lot of imprecision controlling the rudder. If you are set on...
Forum: ARF or RTF
06-08-2014, 03:36 AM
Replies: 8,173
Views: 874,657
Posted By wjcalhoun

Jim I build my R70 with dual aft mounted...

Jim
I build my R70 with dual aft mounted elevator servos; if you search my posts on this thread, you will find some pictures of the structure you will need to add to support the forces generated by...
Forum: ARF or RTF
06-07-2014, 12:05 PM
Replies: 8,173
Views: 874,657
Posted By wjcalhoun

Proline: The stock R70 gear are swept back,...

Proline:
The stock R70 gear are swept back, bringing the main gear line (your 'pivot point') more towards the CG of the plane (more aft than the mount). The Dubro gear are straight, and will make...
Forum: ARF or RTF
06-07-2014, 08:07 AM
Replies: 8,173
Views: 874,657
Posted By wjcalhoun

Hi Al; agree with you on the hinges. I think...

Hi Al; agree with you on the hinges. I think this airframe's potential for speed >110 mph, and the way many of us like to push it rules out CA hinges.

I have had two failures of Gorilla glue...
Forum: ARF or RTF
06-07-2014, 07:47 AM
Replies: 614
Views: 85,567
Posted By wjcalhoun

Hi Lifer My R90 has a DLE55RA, and like Bob P i...

Hi Lifer
My R90 has a DLE55RA, and like Bob P i replaced the stock spinner with a big Dave Brown - MUCH better.
I have reasonably aggressive throws on all surfaces (max rates about 40* ele and...
Forum: ARF or RTF
03-09-2014, 11:32 AM
Replies: 614
Views: 85,567
Posted By wjcalhoun

Roger Are you saying it took 3# to get the CG...

Roger
Are you saying it took 3# to get the CG correct? Your plane will be nearly 24# then, right?

How much does your FG57 weigh? The CG with a DLE55RA was spot on with the usual things in the...
Forum: ARF or RTF
01-05-2014, 08:03 PM
Replies: 8,173
Views: 874,657
Posted By wjcalhoun

Hey Mach2 Interesting idea, but can you imagine...

Hey Mach2
Interesting idea, but can you imagine trying to keep your eyes on YOUR R70, among a flock of two dozen, when they all are in original livery / colors?
Forum: ARF or RTF
01-05-2014, 07:42 PM
Replies: 614
Views: 85,567
Posted By wjcalhoun

Hi Mike; nice to hear from you. how do the skis...

Hi Mike; nice to hear from you. how do the skis change the flying characteristics of your R70?

Happy new year to all.

Gotta get my wife out to the field to get some iphone video. The R90 is...
Forum: ARF or RTF
12-04-2013, 10:00 AM
Replies: 8,173
Views: 874,657
Posted By wjcalhoun

Robert I find that the DLE20 does dry out if it...

Robert
I find that the DLE20 does dry out if it has not run for a week or so. Mine takes 10 flips choke on before it pops if I have not flown for a few weeks. After that, starts quickly. At first...
Forum: ARF or RTF
11-28-2013, 11:09 AM
Replies: 8,173
Views: 874,657
Posted By wjcalhoun

Why are you selling?

Why are you selling?
Forum: ARF or RTF
11-05-2013, 10:18 AM
Replies: 8,173
Views: 874,657
Posted By wjcalhoun

And, if you really want speed, this airframe...

And, if you really want speed, this airframe (with a bit of care with the build, reinforcements, and hardware selection) will hit 120 on a 12 pitch prop (DLE20). I have a 13.5 pitch prop ready to go...
Showing results 1 to 25 of 500
 
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