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09-01-2009 03:29 AM  8 years agoPost 161
twinring

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japan

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Buddha,
I did many versions of this frame about 10 variations that included the area you are concerned about, and what it boiled down to is not just weight, but the amount of machining, and material used, the machinist was able to use that area of carbon from the sheet to make the battery tray. I cant really agree with Clive more on this in that yeah we can spend a lot of effort trying to make the frame bullet proof, but no matter what, something is going to break, Ive crashed about 3 sets of CF frames and some where stronger than others, the stronger ones in very bad cases transferred their damage to other parts like the the lipos, and I had one case where the frame survived, but it tweaked the boom mounts enough to crush the Gyro case. A GY401 is far more expensive than these frames. In the cases where the frame was weaker, I ended up bending some cap bolts because the shear from impact was absorbed by the bolts giving way. I think that strengthening that area would only protect in from a full on nose in the tarmac crash, and I think alot of you would agree that that type of crash usually involves a major loss of everything on board.

i think youre correct in that some reinforcement in that area could be beneficial, but since the machinist has to use another area of the sheet or another sheet altogether to make the other parts, the cost is going to go up.

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09-01-2009 03:54 AM  8 years agoPost 162
jimboflies

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Beaumont, Texas;

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Hey budda ,
go take a walk .
just kidding around budda.
Actualy , the battery tray is very solid and should hold up in a crash . The idea is to build the frames to fly not crash.
twinring has done an awsome job on these frames .These frames are around 4 years in the making . I`m sure twinring(Doug), has been designing these frames in his mind , and on paper for at least 4 years.
I don`t think he needs to change anything on them if you ask me ,they are perfect!!

EP8 EX twinring frame
Quick of Japan
EP8v2 EX
EP9

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09-01-2009 03:58 AM  8 years agoPost 163
clive45

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NSW Australia

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OK so we have chucked this around for a while.
Have we decided with CF or G10.....who is arrangeing to get things done etc. Do we want fins with names in, would be nice but might put the cost up quite a bit.

Whats the general opinion?

If it cannot fly on it's own, then I won't be much help....

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09-01-2009 08:12 AM  8 years agoPost 164
flyer09

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AZ

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I'm glad we had a chance to toss some ideas around and ask questions. It has been an interesting learning experience and fun to participate on a project with a few guys in all parts of the world.

I believe the design is really sound. The answers I've read has me very confident. Those flying the frames have nothing but praise. I really think G10 is the way to go. From a structural perspective as well as part survivability, it's like crumple zones on a car. Something's got to give. The price difference over CF might make it cost effective enough for us to get more than one or two sets each so we don't have to do this as often (or ever if twinring gets sick of us) if we want to use these frames for some time, and I do.

Twinring, once the issue of material is settled and you get the quote, can you post the cost breaks, i.e., cost if the order is for ten sets, twenty, etc. When everyone sees the cost per set they will be better able to decide on how many they would want. As for the fin, I'd like to have at least your design included, one per frame set. If you think, based on the sheet layout, we have room for a few custom fins, let me know how many and I'll send you the DXF's (or let me know which format IGES, STEP, etc.) for the ones I do.

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09-02-2009 12:22 AM  8 years agoPost 165
twinring

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japan

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if you guys really want names on your fins there will be on average a $25 setup charge for each name. If all the parts are the same, you pay the set up charge once and then keep cutting the same parts as many as you want.

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09-02-2009 02:16 AM  8 years agoPost 166
flyer09

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AZ

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It's probably best then not to complicate this order with custom fins. Twinring, I still hope at least your fin makes it onto the sheets of G10.

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09-11-2009 04:46 AM  8 years agoPost 167
clive45

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NSW Australia

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Please don't take this the wrong way, but is anything happening re the frames ....has a decision been made to go CF or G10 etc. Just checking, I know all are busy etc

If it cannot fly on it's own, then I won't be much help....

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09-22-2009 02:13 AM  8 years agoPost 168
twinring

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japan

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Right now im waiting on quotes from two different vendors, and two different machinists.

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09-22-2009 03:29 AM  8 years agoPost 169
jimboflies

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Beaumont, Texas;

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Thanks twinring.
You know , you are the only reason this EP8 forum is still alive. Thanks.
I will always own and fly the Quick of Japan EP8/9 helis; they have made that much of an impression on me . They are by far the best 500 size heli there is.

EP8 EX twinring frame
Quick of Japan
EP8v2 EX
EP9

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09-22-2009 03:51 AM  8 years agoPost 170
clive45

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NSW Australia

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I'm still on here. I check here every day.

If it cannot fly on it's own, then I won't be much help....

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03-26-2010 04:31 AM  7 years agoPost 171
jimboflies

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Beaumont, Texas;

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Okay , this has gone on too long.
I still fly my EP8/9 EXes as much as I can .even it is just a quick hover in the front yard(I have a big yard).
Why is there nobody posting ??? Is Quick of Japan realy dead ?

EP8 EX twinring frame
Quick of Japan
EP8v2 EX
EP9

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03-26-2010 05:09 AM  7 years agoPost 172
clive45

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NSW Australia

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Hey Jimbo, I'm still here...........not done any flying at all lately. Too much work and a sick wife (getting better now).
Very little heard of Q of J at all, I always check to see if there are any new posts. Twin ring is not around as far as I know as I asked about more frames etc. But no reply.
Hope all is good your way.

Clive

If it cannot fly on it's own, then I won't be much help....

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03-26-2010 11:38 AM  7 years agoPost 173
jimboflies

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Beaumont, Texas;

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Hi Clive, doing much better here in Texas . Good to hear from you.

EP8 EX twinring frame
Quick of Japan
EP8v2 EX
EP9

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03-26-2010 01:28 PM  7 years agoPost 174
twinring

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japan

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Hey guys, havent been here in months. I also havent flown anything since November of Last year. Wondering If I even still know how.
its good you guys are still at it. Ive depleted all my lipos and havent had the time or dough to order some new ones.

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03-26-2010 01:34 PM  7 years agoPost 175
twinring

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japan

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If you guys are man enough, Quick has just made a flybarless head for the EP8-9

check it out on thier website.

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03-26-2010 01:43 PM  7 years agoPost 176
jimboflies

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Beaumont, Texas;

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You always find the good stuff for the Quick line of helis twinring.
Good to hear from you twinring.

EP8 EX twinring frame
Quick of Japan
EP8v2 EX
EP9

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03-26-2010 01:47 PM  7 years agoPost 177
gorn

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Western Australia

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Very cool, its high time they did some new stuff

For the love of the hobby

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03-26-2010 03:58 PM  7 years agoPost 178
jimboflies

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Beaumont, Texas;

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I wish I had the funds to try the flybarless technology....

good to hear from you gorn!!!!

EP8 EX twinring frame
Quick of Japan
EP8v2 EX
EP9

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03-26-2010 04:40 PM  7 years agoPost 179
gorn

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Western Australia

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Thanks Jimbo
Glad to hear your doing better these days

For the love of the hobby

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03-26-2010 09:10 PM  7 years agoPost 180
clive45

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NSW Australia

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It seems the team is back........glad you are all well and things picking up.

If it cannot fly on it's own, then I won't be much help....

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