RE: GP Cap 232
 

You are backwards.

Li-ION ar more stout and take a good beating but are very limited in the amp's it can deliver at one time.

Li-Poly can deliver much higher amp's for longer periods of time and are much lighter. They are not near as strong so installing them into a single cyliunder gas plane can and has destroyed them to the point them burst open. That is rare but I have seen it happen.

Li-ION battery cells are usually round. Li-POLY cells are usually flat

So you want Li-ION for glow/gas planes. You want Li-Poly for electrics

You can easily see this difference by going to http://www.fromeco.org Take a look at the peerless batteries. Those are Li-Poly and are flat. Fromecos packs those differently than say Thunderpower so they can take the vibrations of larger planes. Also, Take a look at the Li-ION's and you'll see each cell is round

RE: GP Cap 232
 

AussiePilot,

The bottom line is that you can use EITHER type of battery AS LONG as they are the same voltage output. The reason for these is simple basic electronics. Current is equal to Voltage divided by Resistance, SO.... as you increase voltage you increaase current. For that reason when you use batteries of higher voltage than the recomended output, one nust DERATE the current carrying capacity of your system.

I bet than in this case LiPos of too high a voltage were being used to drive a whole bunch of power hungry servos. If you check some of the new high torque digital servos. For example a Hitec HS-5995TG specifications for Current Drain (6.0V): 300mA/idle and 4.2 amps at lock/stall
Current Drain (7.4V): 380mA/idle and 5.2 amps at lock/stall. If you use a three cell Lipo (11.1V) regulated to 6V, and a couple of this servos get locked at maximum current drain, you will get arround 20Amps of current through your batteries, and some smoke will be produced.

My final recomendation is. If you are going to use the Duralite Power System, STICK with Duralite batteries. I am not sure, but a friend of mine that was using their system ruined the Duralite batteries by using a different charger than the one they recomend. He mentioned the Duralite Batteries have some type of power guard wiring system to protect the baterries from overdischarging, and possibly to balance the charge throughout all the cells. In any case if you are going to invest in a very expensive system like Duralite, what the heck is the difference a few more dollars in batteries. By the way I think it's a waste of money to equip any plane smaller than a 33% with such expensive system and servos. Any good servo isolation system and power regulation system will do, and for a plane of this size good quality metal gear 100 oz/inch torque servos per surface will do just fine. And unless you are a an extremely acomplished 3D pilot, running those superfast coreless digital servos you will need a whole bunch of negative exponential for sport flying

RE: GP Cap 232
 

It was not a voltage issue that caused the fire. It was a case of not properly protecting the battery from vibration which resulted in the battery shorting out. It is safe to use Li-poly but if a battery system is made that can stand up to vibrations better and still give the same voltage/run times and be very close to the same in price, why not use it

Heck I use Thunder Power Li-Poly 3-cell 11.1 volt 1320mah which is a very common battery for small electric planes at roughly 2 ounces for my Sullivan smoke pump because they are very light and I have still yet to have to recharge it after 2 gallons of oil. I just have the battery wrapped really well in 1/4 inch thick foam, stuffed between some formers and NOT wire tied tightly down.

Aussie,

It's all about proper setup and protection of the batteries. The Duralites will be fine along with the power box you are thinking about. The Triton charger will work well for charging them

In my case I have 2 year old Li-ION's from Fromeco both in the 2400 and 4800 size. They show no sign of not taking a full charge even though Fromeco recommends replacing them every two years. I will carefully watch them

RE: GP Cap 232
 

I went to the local small engine repair shop for gas fuel line and they recommended 3/32ID line as oppose to 1/8ID. The 3/32 is a much better fit on the brass tubes on fuel tank stopper. Is it ok to use the 3/32ID? It's for a Fuji 43 and 16 oz tank....

RE: GP Cap 232
 

Bubbagates,

I absolutely agree with you. Batteries should be properly isolated and protected from vibrations, specially Lithium based technology ones.

FROMECO LiIon batteries are extremely durable. I have several 2400mAh ReLions that are over two year old and they are still working flawlesly.

In my opinion AussiePilot should stick with DURALITES since those are designed to work best with the DURALITE power isolators. Besides that you need to swap connectors (to MULTIPLEX six pin). If you don't have much experience soldering electronic devices, it may lead to more problems than anything else if you don't do a first class soldering job.

RE: GP Cap 232
 

hey guys thanks alot for ur help, it all makes sense to me know hehe sorry for the dumb questions,
i just uploaded my maiden flight pics i just thought id throw them on here to show u all...
hope u enjoy...

for some reason. its not up loading

RE: GP Cap 232
 

Assuie pics are very nice, how do you like the plane? Any vids are coming up?

RE: GP Cap 232
 

I have the same question. Well tell us in detail how you like it???

The pics look good

RE: GP Cap 232
 

Re-Maidened the CAP with the BCMA 40cc in it today! Finally got great weather!!! Once this thing is broken in and gets the Xoar prop it's going to be a monster!! Here's the video! http://media.putfile.com/BCMA-40cc-Maiden-Flight

RE: GP Cap 232
 

Not bad at all Al. Looks kinda weird without the pants on it but it still looks good

that engine looks like it can give my DA a run vertically. I do the same thing, I'll roll about 50 feet, takeoff, go full throttle and pull straight up, while it's climbing, I call NASA to let them know I'm heading for orbit :D

RE: GP Cap 232
 

Yeah, I have the new pants and cowl for it but haven't put them on yet. Have to get the wrap-around muffler for the new cowl. Vertical is the ONLY way to take off!! This is only the 5th tank of gas through the thing. They tell me it really picks up after the second gallon.

RE: GP Cap 232
 

Welp, the engine certainly allows vertical and if you are going to a better prop and it's only on it's 5th tank, then it should be pretty ballistic in a little while

Folks, Since I get a few questions almost daily in this thread, I'll let you all know right now, I'll be pretty busy doing the family thing from tomorrow morning all the way through Christmas and will not be on RCU much, if at all during that time, so if someone asks me a question I may not get back to you for several days.

That being said, I'll take this time to wish everyone a Merry Christmas

RE: GP Cap 232
 

That's what I'm counting on. Should be all broke in by the summer weather!! Hey did you hear, Kyle won the IMAC Unlimited!!:D:D:D:D Have to get him back out to the field once this thing is broke in and see what he can do with it!! I'm betting ANYTHING!!!!!

RE: GP Cap 232
 

Hey Bubba im just making my order from towers just wondering what size blinde nuts did you use for the mounting of the Da on the cap.??and the bolts thats come with the motor did u use them or other ones.??

RE: GP Cap 232
 

There are no blind nuts needed. The standard DA standoffs that come with the engine are threaded on both sides. The sizes are 10-32 for the side that goes on the firewall. The engine side I think is 4mm but they come with the engine anyway.

I'm heading to the airport to start picking up family so I'll probably not be in here the rest of the week....Merry Christmas everyone

RE: GP Cap 232
 

hello lou,
what was your prop on this video ?
what 's the weight of your plane ?
compare to the 160 fx, what can you say with this engine, more power ?
thank you for answers
@+
stef
sorry for my english, i'm french

RE: GP Cap 232
 

I still have the APC 18X8W on the plane as I'm breaking the engine in. This was only the fourth or fifth tank of gas through it. It is also running on a 32:1 mixture. Once I go to 50:1 Silkolene and the Xoar 20X8 prop I have for it it will totally out-do the 160 that I took out of it. It was swinging a APC 18X6W with authority but with less static thrust then this engine will produce. The 160 measured 18 pounds of static thrust with teh 18X6 and this will go to 20+ and spool up quicker with the Xoar ply prop. Weight difference is insignificant taking the muffler and on-boards glo-driver I used on the 160 into consideration. The plane comes in at about 13pounds +/- .5 but I'll get you an AUW next time I have the wing on. This forty is really small and light. Sorry for my French, I'm American. Been all through France though, Beautiful country, great food!

RE: GP Cap 232
 

thank you lou55

RE: GP Cap 232
 

I have got to tell you what a class act J. Cool was at Horrizon hobbies. He has credited my account for a new engine. I was looking to purchase the 45evolution and pick up this cap 232. I have a Cap 580 33% and thought this plane would make a good training partner. Has anyone installed and modified the fuselage to except canister mufflers? I looked at the install of canisters on the Hangar 9 extra 27% but the cap doesn't seem to have enough room due to the design of the fuselage?
What do you think? I was told the 45evolution really moves with the tuned canister installed. Is there room enough to due so? Or maybe the 45 evolution gas enough power so it doesn't warrant the use of tuned cannister's? Any input would be helpful....

Thanks for all of your information in this forum, it has always been the help I have always needed!
Justin.

RE: GP Cap 232
 

I really do believe that this is not a hobby but a addiction! An ACTUAL DISEASE! I can't buy enough planes. I love this hobby! I really do love it![:o]

RE: GP Cap 232
 

Justin,

I've been really considering doing a MTW75K mini-pipe on this Cap. I'm not looking for more power as I am at 13.75 pounds on a DA50 but I wanted to drop some noise. I also own the GP Ultimate which is basically the same front end as the Cap is. I added a smoke tank to the Ultimate and here is what I did, I think using the same setup and adding some 1/16th balsa and it would work.

Remove the stock tank, trim the former where the tank goes all the way to the top of it. Add a piece of very light ply between where the battery/servo tray is to the former you just cutout. Change the tank to a 16 ounce dubro and mount it to that light ply plate. The tank will now be over the CG and higher up in the fuselage. You now have room for a pipe that is about 2.5 inches in diameter give or take. Cut out a hole in the bottom of the fuselage right below the engine box and you'll probably need to cut some of the bottom of the engine box off as well and also some off the bottom of the former that you cut for the tank, just enough to get the pipe to fit and use a 0mm drop flex header. Once you get everything cut out to fit, line the whole area with 1/16th balsa sheeting to make a pipe tunnel. The little section on the bottom between the firewall and the wing saddle can then be slotted for airflow. If you are using a heavy pitts muffler, you may only gain 1 to 3 ounces between the pitts muffler and the header/mini-pipe, be a bit quieter and get another 100 or 200 rpms.

I have not done this yet but after seeing the mini-pipe that Comp-arf sells for the 2.3 Extra it might just work. It's fairly short and just under 2.5 inches in diameter. Oh yea, you'll probably have to cut off a bit of the exhaust tube on the pipe since this plane really sits low to the ground or add some ply under the landing gear to raise it up

RE: GP Cap 232
 

:)kochj...

I have this plane with the EVO45. I use the EVO pitts style muffler. It works very nice. I have PLENTY of power with this combo. My weight is 13lbs 5 ozs. I'm getting about 19.5 lbs thrurst, probably a little more now that the enigine is getting broken in. Those readings were take with 10 minutes run time.

You'll love the combo and I don't think it's worth the effort to put canister in it. If you want to try the canister though I have a brand new one that I'd sell if you want to PM me.

Here's a picture or two.

Thanks
Barry

RE: GP Cap 232
 

:)Also, in terms of noise this combo is quiet. I had mine tested at our field. From 10 feet away I was 95DBA on left, 94 on front, 95 in back, and 88 or right. Passed with flying colors. People were happy.

I like the engine but it does not make as much power as the DA 50. It makes plenty of this plane though.

Thanks
Barry

RE: GP Cap 232
 

Thank you very much bubba for the detailed description. Your input is invaluable.
Barry C. You evo looks like it is pre magnesium case? I have thought about the 58cc and going with the Lanier yak54 87''. That may be under powered for that plane though.
I have not made a decision yet on what I will do , and I have to take price as a major decision factor in the plane.... THe cap right now is hard to beat as far as price goes.. I just think that the 58evo is such a tank! the 45 seems like a much nicer engine but would limit my options??
Bubba, how long do you think it would take, as far was time spent to do a can install like you described?>
Thank you all
Justin

RE: GP Cap 232
 

:)kochj...

I'm thinking the best engine is the DA50R or maybe a Taurus 52. The DA is the same price as the EVO. I wouldn't by the EVO again, at least not for the same price. If it was $100 cheaper, I'd buy it and fly it in the lighter planes. But, for the same money, I'm gonna buy the DA. Then you don't limit your options.

Yes, it is a magnesium case. It's a beautiful engine and it runs good. Just not as good as the DA.

Thanks
Barry