START HERE |
|
Register | FAQ | PM | Events | Groups | Blogs | Calendar | Mark Forums Read |
Unregistered
|
Audacity Audacity Pantera Helicopters Support |
|
LinkBack | Thread Tools | Display Modes |
12-27-2009, 03:26 AM | #1 (permalink) |
Registered Users
Join Date: Apr 2004
|
What ya'll think of the SAito FG20 gasser in a Pantera?
http://www.horizonhobby.com/Products...G20#quickSpecs
Besides the cost, I know, but how would it perform? crazy thought or possibility? i just saw it, and have no experience on 4 strokes or gassers. |
Sponsored Links | |||
Advertisement |
|
12-27-2009, 07:07 AM | #2 (permalink) |
Registered Users
Join Date: Apr 2009
|
Man...that'd be "right-on" once it was mated to the frame & gearing.
Reliability at high rpms??? Have to get some air moving across it to keep her cool. But gasser, the weight & that tiny muffler...I like! Love my Saito in my scale/pattern plane...probably the best engine in my fleet, all around.
__________________
That rug really tied the room together...did it not? |
12-27-2009, 01:35 PM | #3 (permalink) |
Registered Users
|
I've been considering this for about 9 months, I started with an OS 91 pumped to put in a Pantera a year ago. Decided against that and picked up an FG20. I've been catching up, following, and contributing to the four-stroke threads the last year or so. I've been running the FG20 in an Extra 330.
Things to consider: Any four-stroke has issues with staying cool in a heli Gas engines run hotter than glow. The FG20 has heat issues, this IN a heli? expect some serious heat problems. You will need to gear for the 9K RPM, I looked at belts for a while as I really like going with a belt drive for my 1/5 Tank - I haven't found a good belt/pulley combo I can fit in the Pantera frame yet. The FG20 has ignition issues - not hard to overcome with a third party ignition if you do run into trouble. Heli people love to throw money at things anyway. The high speed needle on the FG20 is very sensitive, but it may turn out to be easier to tune in a heli due to less throttle changing. You will need to modify the clutch to engage at the correct RPM The FG20 is a very long engine, back of carb to the end of the crank. I think about it on occasion still, although the century 20CC gasser would be a much better starting point. I'm mostly looking for other frames I can put the Pantera head that I love on. HOWEVER, it makes one sweet sound. I don't run the muffler, just a diversion pipe. I do love this engine and it's tuning quirks.
__________________
AMA 198798 Charge the batteries, fill the tank, take a backup. |
12-27-2009, 04:27 PM | #4 (permalink) | |
Registered Users
Join Date: Jan 2008
|
Quote:
Pantera gas tank will handle gas just fine, Just change the fuel tubing. Belt pulley combo ? Why ? The pantera tail spins faster then a normal tail on any other heli. Remember you are running same head speeds so the tail will remain the same. Gearing , check my gasser build for this easy answer. I can not speak on that engine as I have now research on it but yes heat is a issue but solved easy with the use of electric fan. At this point things to consider Engine and the drive hub for the engine, these were the things I had to over come the rest was cake. I found with building my gasser that you could put any thing in her that would fit. 4cycle is very doable so is electric and gas. All the hard stuff like gearing was resolved with the fine help of the crew here and some good old thinking. I personally am thinking YS supercharged 4 cycle. And when I do get ready to do it. It to will fly. I have found the Pantera to be a can do heli when it comes to modding due to the materials used to design it.
__________________
Pantera 50's with the following mods. CRRC 26cc Gas, Saito125 4 stroke, Minime mod's .61 4 stroke, .36 2 stroke Eastern Field Rep. for Audacity Models. www.audacitymodels.com "The most convertible RC heli in the world" |
|
12-27-2009, 10:17 PM | #5 (permalink) |
Registered Users
Thread Starter
Join Date: Apr 2004
|
I like Century's radikal with the zenoah G20, 2.5 lbs and its power is 1.7hp in a 10lb 50 sized heli on 620mm mains. They need gearing changes to increase performance.
the Saito fg20 is 1.8lbs, not sure the HP but it'll swing a 16x6 2 blade prop. 2-2.5HP maybe? I wonder if a FG20 Pantera would get in the 8-9lb weight range |
12-28-2009, 05:08 AM | #6 (permalink) | |
Registered Users
Join Date: Apr 2009
|
Quote:
Been following the threads on the Radikal...sounds good...but an awfully high disc loading. A Pantera at less than 7-3/4 (dry) and 2.1 HP with 610mm blades is plenty FAST, FAST, Fast and still has really good penetration (vertical & wind).
__________________
That rug really tied the room together...did it not? |
|
12-28-2009, 04:03 PM | #7 (permalink) |
Registered Users
Thread Starter
Join Date: Apr 2004
|
I think a small drawback to the pantera is the locked in gear mesh. you cant adjust it like other brands.
I want to try a new project once I finish a few current things, A G-10 frame redesigned with the FG20 and a elec Odin fan using the stock pantera bearing blocks and layout. Why havent JB and other factories embraced other gassers outside the popular Zenoah? I think Webra even makes a gasser in a 90 case |
01-04-2010, 03:33 PM | #8 (permalink) | |
Registered Users
Join Date: Jan 2008
|
Quote:
Do not forget to consider that the ignition timing is on the hub, and when you replace it with one to pull a clutch you will have to A cut a drift key into the new hub B drill and place a new magnet into the new custom hub. C make sure new hub can be adjusted for run out. Once you have these hurdles cleared, your green to go. Gears have been solved in my gasser and I am happy with it. The hub is the ONLY thing I am not real happy over but this two is being resolved. Ken
__________________
Pantera 50's with the following mods. CRRC 26cc Gas, Saito125 4 stroke, Minime mod's .61 4 stroke, .36 2 stroke Eastern Field Rep. for Audacity Models. www.audacitymodels.com "The most convertible RC heli in the world" |
|
01-10-2010, 09:39 PM | #9 (permalink) | |
Registered Users
Join Date: Jun 2009
|
Quote:
my fix for an engine that spins 9k this 80t spur drilled here so it can be mounted on here then on to here and then spin with a 17t on here i have yet to test this out with an engine, but this has to be damn close not unless i'm missing something. |
|
01-11-2010, 01:26 AM | #10 (permalink) |
Registered Users
Join Date: Jan 2008
|
Omg !!! Go for it !!!
That will work ! Make sure you break the engine in on the bench as there hell in the heli to do so. I am excited !!! Who's main is that, and is that 19t pinion ? Can't tell its exact color by the picture. Ken
__________________
Pantera 50's with the following mods. CRRC 26cc Gas, Saito125 4 stroke, Minime mod's .61 4 stroke, .36 2 stroke Eastern Field Rep. for Audacity Models. www.audacitymodels.com "The most convertible RC heli in the world" |
01-11-2010, 08:31 AM | #11 (permalink) |
Registered Users
Join Date: Apr 2009
|
I like it!
Do you have said Saito? Curious how it mates to the frame.
__________________
That rug really tied the room together...did it not? |
01-11-2010, 06:42 PM | #12 (permalink) | |
Registered Users
Join Date: Jun 2009
|
Quote:
its JR's 80t tail main and an HPI R40 (1/10 nitro car) 2nd gear 17t (red). i dont think i will attempt a gasser because the engine is a different animal. i was maybe considering a 4stroke like you suggested in another thread. |
|
02-15-2010, 08:37 AM | #13 (permalink) |
Registered Users
|
I am going to try mine by leaving the Stock hub on the FG-20.
__________________
Friend dont let Friends fly stock! |
02-15-2010, 11:58 AM | #14 (permalink) |
Registered Users
Join Date: Jan 2008
|
17 tooth is a yellow gear. If she is red its 19.
17T part #76977 yellow HPI 18T part #76978 purple HPI 19T part #76979 red HPI Ken 80/17 = 4.70 80/18 = 4.44 80/19 = 4.21
__________________
Pantera 50's with the following mods. CRRC 26cc Gas, Saito125 4 stroke, Minime mod's .61 4 stroke, .36 2 stroke Eastern Field Rep. for Audacity Models. www.audacitymodels.com "The most convertible RC heli in the world" |
02-15-2010, 07:04 PM | #15 (permalink) |
Registered Users
Join Date: Aug 2009
|
Looks like a JR main gear.
|
02-15-2010, 09:05 PM | #16 (permalink) |
Registered Users
Join Date: Jan 2008
|
JR tail spur.
Ken
__________________
Pantera 50's with the following mods. CRRC 26cc Gas, Saito125 4 stroke, Minime mod's .61 4 stroke, .36 2 stroke Eastern Field Rep. for Audacity Models. www.audacitymodels.com "The most convertible RC heli in the world" |
02-15-2010, 11:14 PM | #17 (permalink) |
Registered Users
Join Date: Oct 2009
|
i've been working on my 33% so i've been distracted and we had 6" of snow down here in the dirty south so... been reading alot of the "plank" mag's and there is a company in the UK called just engines that sells a conversion kit to take any glow motor and turn it into gas with simple mods... http://www.justengines.unseen.org/ac...w_Engines.html
Maybe one of you guys that have a .90 in the P-50 can try one and see what it does performance wise... the Brit's seem to love the stuff..... |
02-10-2011, 01:23 PM | #18 (permalink) |
Registered Users
|
here is a link to my build. It was a bust that motor will run good one day and not the next. on the test bench it runs like a sewing machine all the time. I think it has a lot to do with the midrange needle. (there isn't one). and I also think that it does not like to be run vertical unless at full throttle.
Well I guess it was made for an airplane and that is what it does best in.
__________________
Friend dont let Friends fly stock! |
Thread Tools | |
Display Modes | |
|
|