Search: Posts Made By: MJD
Showing results 1 to 25 of 500
Search took 0.98 seconds.
10-30-2018, 10:14 AM
Replies: 145
Views: 7,175
Posted By MJD

Wow - OLD thread!!! Man I take my freaking time...

Wow - OLD thread!!! Man I take my freaking time getting around to things.. :rolleyes: Plus, I haven't really been hanging on RCU for a while, too much time reading and posting instead of doing useful...
04-10-2018, 05:21 PM
Replies: 1,852
Views: 84,257
Posted By MJD

Yeah, this prop pulls like a bear and would be...

Yeah, this prop pulls like a bear and would be the cat's ass on a small clean sport aero design. My thoughts lean towards similar overall dimensions, skinny it right up but side area of course (gotta...
04-10-2018, 03:42 PM
Replies: 1,852
Views: 84,257
Posted By MJD

Well yeah, you're flying those things around...

Well yeah, you're flying those things around crazy close to the ground.. lucky they groove! I just flew the Leprous Sparrowhawk a couple more times about 45m ago. At 5 oz it will hold a steep, steep...
04-10-2018, 09:11 AM
Replies: 1,852
Views: 84,257
Posted By MJD

I tend to think that exceeding pitch speed is...

I tend to think that exceeding pitch speed is actually a case of the datum line or chord line pitch not accurately expressing the true aerodynamic pitch of the prop.. if pitch speed is exceeded, then...
04-09-2018, 02:16 PM
Replies: 1,852
Views: 84,257
Posted By MJD

Well, subject to education on the subject, that's...

Well, subject to education on the subject, that's what I understand because it is timed and so only sees positive pressure impulses. Similarly, my understanding of back-plate pressure is that the...
04-09-2018, 08:46 AM
Replies: 1,852
Views: 84,257
Posted By MJD

Nicely done again! Yeah I ordered the plates...

Nicely done again!

Yeah I ordered the plates but had not got back to adding in the postage and sending the money - just gapped out again. I sent the PP payment for 2x.010, 1 ea .020 and .049 this...
04-07-2018, 09:16 PM
Replies: 1,852
Views: 84,257
Posted By MJD

Yeah for sure, happy to pay what the man wants...

Yeah for sure, happy to pay what the man wants for his jewelry, and nothing has shipped. I am a scatterbrain with PM's as a rule, best intentions notwithstanding. Add a few 9/10 crazy push push push...
04-07-2018, 06:56 PM
Replies: 1,852
Views: 84,257
Posted By MJD

OMG, I ordered a few a couple of weeks ago and...

OMG, I ordered a few a couple of weeks ago and that just wham-bam reminded me I was supposed to get back to him and wire the payment! Oops. I will take care of that first thing in the morning.. :p ...
04-07-2018, 10:30 AM
Replies: 9
Views: 1,675
Posted By MJD

Without knowing the prop and the exhaust set-up,...

Without knowing the prop and the exhaust set-up, hard to be much specific help.

Impossible to tune and burning out glow plugs are two primary symptoms of a piped engine with too much prop load,...
04-06-2018, 07:09 PM
Replies: 16
Views: 1,069
Posted By MJD

I've been meaning to do this for a while, so...

I've been meaning to do this for a while, so having just scored a handful of Al cigar tubes, last evening I roughed out a .940" OD x 4" bladder tank that works out to 41cc capacity. The part I really...
04-06-2018, 05:07 PM
Replies: 1,852
Views: 84,257
Posted By MJD

This thing has a few flights and some mileage on...

This thing has a few flights and some mileage on it, but it has sat around idle for ages with no regulator or Rx as it was getting pretty ratty and I was wishing for a nice TD .020 bird to replace...
04-06-2018, 02:55 PM
Replies: 1,852
Views: 84,257
Posted By MJD

Your prop mod efforts are more carefully done...

Your prop mod efforts are more carefully done than mine, I need a light and magnifier these days but don't have one. And more patience.

One thing I noticed running some plastic drone props on...
04-05-2018, 06:34 PM
Replies: 16
Views: 1,069
Posted By MJD

BTW before you snap the film can on those mounts,...

BTW before you snap the film can on those mounts, try heating the end in boiling water then quickly snap it on hot. Seems to relieve some stress but your mileage may vary.
04-05-2018, 06:29 PM
Replies: 1,852
Views: 84,257
Posted By MJD

I wonder if the manufacturer's engineer collected...

I wonder if the manufacturer's engineer collected Cox engines and secretly made sure these happened to be good dual-use props..
04-05-2018, 06:26 PM
Replies: 1,852
Views: 84,257
Posted By MJD

Yes, I saw similar numbers too when I bench ran...

Yes, I saw similar numbers too when I bench ran one stock. I also grabbed some of the 4x2.8, and they go like a bat on the TD .020. Mine's a silver case early version from the yellow blister pack, a...
04-05-2018, 08:26 AM
Replies: 1,852
Views: 84,257
Posted By MJD

Did you mod that prop or just balance it? I...

Did you mod that prop or just balance it? I haven't run one on my .020 yet, the stock prop rpm on the .010 was up there and it seemed light for the .020 to me, maybe not. My .020 model isn't clean...
03-30-2018, 05:41 AM
Replies: 1,852
Views: 84,257
Posted By MJD

Can't say I know the exact timing but visually...

Can't say I know the exact timing but visually the exhaust is definitely under 180 degrees. I had to have the speed version just because, well I just wanted it. So far it is the most challenging...
03-29-2018, 09:52 PM
Replies: 1,852
Views: 84,257
Posted By MJD

The Toucan has the open exhaust Profi Rambler....

The Toucan has the open exhaust Profi Rambler. Haven't tamed the speed version yet.

The 3.8" x 4.75" prop is an E5, thinned/narrowed, and I have a wider blade version in 4" OD. The pressure...
03-29-2018, 01:57 PM
Replies: 1,852
Views: 84,257
Posted By MJD

Yeah that’s a number to be reckoned with. I don’t...

Yeah that’s a number to be reckoned with. I don’t know if I have too much airframe for that speed but I suspect it is capable. It’s really slippery.

LOL what do I have to do, run a 1-blade 6”...
03-29-2018, 08:23 AM
Replies: 1,852
Views: 84,257
Posted By MJD

I can barely even see the .05 version in the...

I can barely even see the .05 version in the picture... :cool:

Nice lineup of little speed demons. The Screamin Toucan on pressure and new props are on deck all checked out and ready to go again -...
03-26-2018, 07:31 AM
Replies: 16
Views: 1,069
Posted By MJD

The best small clunk tubing I have used so far is...

The best small clunk tubing I have used so far is the 1/2A silicone line from Texas timers. It only needs a piece of brass tube and maybe a tiny bit of weight to clunk well.

I have tried heat...
03-25-2018, 06:15 AM
Replies: 16
Views: 1,069
Posted By MJD

https://cimg3.ibsrv.net/gimg/www.rcuniverse.com-vb...

https://cimg3.ibsrv.net/gimg/www.rcuniverse.com-vbulletin/640x480/img_1712_37d7ba90c60d9142005a5b7d1c70c95b3fbea181.jpg

Latex balloon bladders last for ages in these tanks. Different when you...
02-04-2018, 03:33 PM
Replies: 2
Views: 1,638
Posted By MJD

I was at Estes when it was being test flown with...

I was at Estes when it was being test flown with a Black Widow pusher, it flew well but not a power monster. Shortly after it went into production I built one with an OS .15 FP pusher, I shortened...
06-29-2017, 10:33 AM
Replies: 39
Views: 3,139
Posted By MJD

Cheap ferrite motors with a lekkie prop adapter...

Cheap ferrite motors with a lekkie prop adapter and a piece of tubing shoved over the threads for a starter cone work pretty good for me - yes you have to cobble together a switch.

The TD .020 can...
06-09-2017, 08:03 AM
Replies: 148
Views: 15,591
Posted By MJD

That seems to be the case given the signature of...

That seems to be the case given the signature of the OP in post #1:

Advanced Composite Manufacturing (ACM)
Acmuav.com (http://www.acmuav.com)
rick@acmuav.com / bagostix@aol.com
Rick (BAGOSTIX)...
Showing results 1 to 25 of 500
 


 
Forum Jump

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service