9sec240
Full Member
naturalasperiphobic
Posts: 261
|
Post by 9sec240 on Jun 1, 2010 0:24:05 GMT -5
I am bored with my 425. I like the heli but my 500 ESP is way more fun to fly. I think that the ability to change the boom length and blade size is cool but feel the 425 ends up a bit large, heavy and clunky. I suspect that longer blades would suit 7the heli better. I am thinking about stretching my 425 to 475 or 500mm and am looking for opinions and suggestions.
Can I keep the current power system (Align 500L motor and 60A ESC) and gearing? I suspect the ESC might be on the small side but the motor (1700kv) I think might work. I have gears to get head speed as low as 2400. Do you set it up more like a 425 or a 550? Do I need a different flybar and paddles? What about tail blades? Any other suggestions?
Thanks for any help.
|
|
|
Post by Jerrymac on Jun 1, 2010 1:21:26 GMT -5
Funny you should ask Ivan, as I am currently in the process of building one myself. I have a short boomed 425 and a long boomed 550. I am currently putting together a mid-boomed 500. You will need to use larger flybar paddles and tail blades like the 550 uses. The 60A esc should be ok depending on what motor you use. The recommended motor would be around the 1100 to 1200kv range. The 1700kv motor may work if geared properly, but I think it will have less torque than a smaller kv motor and may bog on hard collective moves. To give you an idea, I am using an 850kv motor in my 550 and a 1470kv motor in my 425. I am going to use an 1100kv in my 500 build. You can get a tail conversion kit that comes with the boom, belt, and control rod for less than $20. www.allerc.com/product_info.php?cPath=24_118_119&products_id=5022
|
|
|
Post by dunkonu23 on Jun 1, 2010 5:23:28 GMT -5
I'm with Jerry. I think you'll end up destroying batteries and possibly your power system with high collective moves on a 500 with your current motor.. just too much current draw, too fast. I'd go with Jerry's motor suggestions. After I get a few more flights on my Scorpion motor, I'd be willing to part with my Z30A 1100kv motor. If you're interested, I'll let you know when the time comes.
Scott
|
|
9sec240
Full Member
naturalasperiphobic
Posts: 261
|
Post by 9sec240 on Jun 1, 2010 13:55:03 GMT -5
Anybody got a good cheap source for 500mm blades?
|
|
|
Post by dunkonu23 on Jun 1, 2010 23:57:14 GMT -5
Ivan...
You may want to try Helidirect... I really don't use 500mm blades. With the X5 and the T-Rex 550 coming out, I'd be willing to bet there will be a lot of new blade sources.
Scott
|
|
|
Post by Jerrymac on Jun 2, 2010 1:40:15 GMT -5
It seems like 500mm blades are kind of an odd size as there are not many helicopters that use them. Like Scott said, hopefully with the new Gaui X5 and the Trex 550 coming out more suppliers will start making them, although I am not sure what the recommended blades are for the Trex 550. About the only place I could find any was at AlleRC. They have some Gaui 500mm CF blades for $47.95, some RCP 500mm blades on sale for $33.00, and some Logo 10 500mm blades for $52.00. I haven't tried any of these yet so I can't tell you what kind of quality they are. I really haven't gotten started on my "500" build yet as I am now tinkering with a little Gaui 200 that I picked up used. Man that thing is tiny. I can hardly see the screws even with my glasses on.
|
|
|
Post by dunkonu23 on Jun 2, 2010 2:47:42 GMT -5
I looked around... the only place I found them in the US was at AlleRC, too.
Scott
|
|
|
Post by xodarap1 on Jun 2, 2010 20:38:30 GMT -5
The RCP 500mm's are a great deal at $33 bro! I paid $59 each for the 4 RCP sets that i picked up a year or two ago. They fly fine and i know i could do all the newer maneuvers with them that i do with the maniac 503mm's now. The 60a ESC will be fine.. that's what i ran on the hurri for hundreds of flights with the z30 1110 motor and 13t,42,20,61 gears. You may want to use the 60 or 61t front gear (to avoid stripping the front gear) with a pinion that will give you around 2200hs with the motor you will be using. Here is an old video of them on my hurri: Here is an older pic of one of the hurris with the RCP's installed: Attachments:
|
|
|
Post by Jerrymac on Jun 3, 2010 1:50:44 GMT -5
The RCP 500mm's are a great deal at $33 bro! I paid $59 each for the 4 RCP sets that i picked up a year or two ago. They fly fine and i know i could do all the newer maneuvers with them that i do with the maniac 503mm's now. Hmmm, guess I should pick up a couple pairs of those myself.
|
|
9sec240
Full Member
naturalasperiphobic
Posts: 261
|
Post by 9sec240 on Jun 3, 2010 22:46:51 GMT -5
The RCP 500mm's are a great deal at $33 bro! I paid $59 each for the 4 RCP sets that i picked up a year or two ago. They fly fine and i know i could do all the newer maneuvers with them that i do with the maniac 503mm's now. The 60a ESC will be fine.. that's what i ran on the hurri for hundreds of flights with the z30 1110 motor and 13t,42,20,61 gears. You may want to use the 60 or 61t front gear (to avoid stripping the front gear) with a pinion that will give you around 2200hs with the motor you will be using. Here is an old video of them on my hurri: Here is an older pic of one of the hurris with the RCP's installed: Thanks so much for the reply. I think I am going to scoop up a set and the boom stretch from them. Were you flying 425 or 550 paddles and tail blades with your 500 mm mains?
|
|
9sec240
Full Member
naturalasperiphobic
Posts: 261
|
Post by 9sec240 on Jun 8, 2010 19:16:14 GMT -5
Well... I have my stretch kit ordered. I got the RCP 500mm blades and boom kit from allerc. I also ordered a motor from Hobby City to try out. My current motor is a 1600kv Align 500L from my 500 ESP. The new motor is 1300kv which should drop my head speed perfectly without regearing. Should be about 2100 RPMs assuming the motor is rated accurately and the head speed calculator is correct. Click here for full details
|
|
|
Post by Jerrymac on Jun 9, 2010 0:54:05 GMT -5
I just noticed that Steve didn't reply to your question about the flybar paddles and tail blades. You should use the ones for the 550. The 425's are too small.
Some of the original 550 kits like mine actually came with 500mm wooden blades, but had the large tail blades and paddles. Kinda odd though, as it came with the long boom and 575xl belt for 550's. I never flew it with the 500mm blades though, just 550's.
The one I got in the package deal with the EP200 has the medium size boom and 522xl belt already on it, so that will be the start of my new "500" build.
|
|
|
Post by dunkonu23 on Jun 9, 2010 5:33:23 GMT -5
Maybe that I'm using the 425 paddles on my 550 is why it won't flip! Scott
|
|
9sec240
Full Member
naturalasperiphobic
Posts: 261
|
Post by 9sec240 on Jun 9, 2010 7:59:53 GMT -5
I am going to give it a try with the 500 sized KBDD paddles and tail blades and see if it works.
|
|
|
Post by dunkonu23 on Jun 9, 2010 14:45:36 GMT -5
I hope that motor works out for you, Ivan. It kind of looks like a TonicX!
Scott
|
|
9sec240
Full Member
naturalasperiphobic
Posts: 261
|
Post by 9sec240 on Jun 9, 2010 17:47:32 GMT -5
The stretch kit arrived today!!! It will be a while on the motor. Thankfully I have some gearing that I can play with to get the head speed down. Looks like I will be busy tonight.
|
|
|
Post by dunkonu23 on Jun 9, 2010 18:45:08 GMT -5
Very cool, Ivan! I hope your conversion goes well!
Scott
|
|
9sec240
Full Member
naturalasperiphobic
Posts: 261
|
Post by 9sec240 on Jun 9, 2010 20:00:40 GMT -5
Well... it is a failure already... The RCP blades have a 4 mm hole and the grips are 3 mm. It would not be a big deal if I could use the flanged adapters that Gaui sells but the root is 12 mm so.....
What I need is just a tube with 3 ID and 4 mm OD..... or grips with 4mm holes.
Has anybody experimented with opening the holes in the plastic grips? It is countersunk on one side for the bolt head and is hexed on the other side for the nut. I would have to open the hole up and then countersink for the larger bolt head and figure out what to do on the nut side.
|
|
|
Post by Jerrymac on Jun 10, 2010 2:05:48 GMT -5
Maybe that I'm using the 425 paddles on my 550 is why it won't flip! Scott Yeah Scott, that is why. The 550 flybar paddles are much bigger than the 425 paddles. Much more cyclic response. Ivan, gimme a day to look through all my Gaui stuff as I think I should have a bunch of 3mm id by 4mm od blade bushings here somewhere. All of my 550mm blades came with these bushings, but since I use the CNC grips which use 4mm bolts, I never needed the bushings. Been kinda hectic here lately as the wife is havin a yard sale this weekend and going to Florida next week, but I will try to find those bushings for you. I know I have a lot of them , just need to find them.
|
|
|
Post by dunkonu23 on Jun 10, 2010 5:11:13 GMT -5
|
|