House Of Balsa F-86. - Page 3

AceMigKiller · Sep 14, 2009, 08:46 PM

Brad,
Don't be scared off! The HET 6904 is an excellent, proven fan.
The only reason the *warning* came up is because you're pumping ALOT of power through the fan/JS1400 on 5s. As with ALL fans, you just gotta make sure your fan is balanced well, and doesn't stretch too much when you start spinning them at the very high levels achieved with the above setup.

As for my recommendation...
Yes, I love the Lander's Fan Shroud (Aluminum, slightly heavier, but makes for a strong fan shroud and an excellent heat sink, even on the JS1400 with a stand off mount.
However, I also like the Minifan Pro Rotor! From my experience, it's a bit tougher than the Lander's stock rotor (which is also a good rotor), provides just a touch more thrust, and will undoubtedly handle the higher power levels alot better (less stretch/warpage). Not to mention it comes dynamically balanced!

Schubies are also great fans.
You are right, they are preeeetty pricy... not to mention pretty fragile... but they definitely make up for that in performance!

If you're looking for EDF stuff online, I must throw in the obligatory www.EJF.com
Great prices, excellent service. We've got all the stuff mentioned above with the exception of the Schubie.

Vic

bruff · Sep 14, 2009, 08:55 PM

The ones I'm building, one is HET 90 mm using HET inrunner on 8S(customer) and the other is 4" Hoyae using Hacker outrunner on 5S(mine). Pulling alot less AMPs 60 vs 105. I'm putting out approx. 4 lbs of thrust. No inlet tube, but I'm using the Aux inlet on mine but no blow in doors. Pictures going up soon.
Bob

Devilbrad · Sep 14, 2009, 09:14 PM

You guys must have fun in Arizona! I've always wanted to live there, seems to be a hot bed (literaly!!) of RC activity.

AceMigKiller · Sep 14, 2009, 09:46 PM

If you can bear 3-4 months of brutally hot summer (we just wake up earlier to go fly

), the rest of the year is NIIIICE.
Lots of great talent here too! Bob Ruff is a legend, Clay Sherrow helped pioneer the new BIG EDF stuff, Electric Jet Factory was probably one of the first EDF guys seriously 'on the scene', and lets not forget Jim Drew and XPS, paving the way for the next generation of Speed Demons!!!
Plus the AMA field, Superstition Airpark is home to the AZ Jet Rally and the AZ Electric Festival, some of the most well known events in the Jet/E-Flying world.

Devilbrad · Sep 14, 2009, 10:30 PM

Quote:

Originally Posted by AceMigKiller

If you can bear 3-4 months of brutally hot summer (we just wake up earlier to go fly

), the rest of the year is NIIIICE.
Lots of great talent here too! Bob Ruff is a legend, Clay Sherrow helped pioneer the new BIG EDF stuff, Electric Jet Factory was probably one of the first EDF guys seriously 'on the scene', and lets not forget Jim Drew and XPS, paving the way for the next generation of Speed Demons!!!
Plus the AMA field, Superstition Airpark is home to the AZ Jet Rally and the AZ Electric Festival, some of the most well known events in the Jet/E-Flying world.

See, now you are just teasing me, LOL I know theres also some GREAT nitro off road tracks and rock crawling areas. Not to mention full scale drag strips, smog free counties (thats important for us hot rod people), and tan girls. Is EJF hiring?????

Devilbrad · Sep 14, 2009, 10:32 PM

OK, back on track. Plane will be here tomorrow, I'll get pics of the air inlet for calculation purposes and post pics of all the virgin parts. Should I be worried about 27 year old balsa wood?

bruff · Sep 14, 2009, 10:46 PM

No this one I'm building (fixed gear) is the original wood wing.
bob

gundamnitpete · Sep 15, 2009, 08:40 AM

Quote:

Originally Posted by Devilbrad

What do you guys use to measure thrust? So a JS1400 it is, CC125 (because I already know their stuff works in the electric car world and my LHS carries it), but uncertain on fan. Pete scared me with his warning on the 6904, LOL. Vic, are you saying you would use the Lander fan unit, but replace the blade with a Mini Pro rotor? What are your guys thoughts on the Schubelers? Looks like they have a 70mm unit coming soon, but are pricey! Where is a good store to buy online from? The EDF stuff seems to be in short supply at the usual A Main and Tower sites I shop on.

You just need to brake it in well, and make sure it's running smooth. it's alot of power!

i've also got a schubie 70mm DS-30. very nice fan! expensive($250), and you need to cut the end off, but very nice. i just ran one up to 75,000rpm, so you know the fan can take the power.

Tam from tamjets might be able to get you a DS-30. The 6904 is available from ejf.com for about $35.

AIR SALLY · Sep 15, 2009, 07:53 PM

Dons rc has the HET also he's in the vendors thread

Devilbrad · Sep 15, 2009, 09:20 PM

Thanks all. Its here! Its here! I just opened it up and took a quick look and some pictures. I think there might be a couple balsa pieces missing. I'll have to lay everything out later and check, but no biggy. Also I mis-read the ad, it didnt come with the .21 engine. Again, no biggy. I still feel I got a good deal and cant wait to start building with all of your input. On to the pics.

Devilbrad · Sep 19, 2009, 07:08 PM

OK, there isnt balsa missing, looks like previous builder had actually started construction. I'm doing some planning here and have looked at the pics you guys posted of where your fans where mounted and trying to determine how and where I will put mine. I've also found some 3" ID carbon fiber tubing I was thinking of using for the ducting. Heres what PO has already done. Note the bulkhead for mounting the old Axiflo fan has come detached. Looks like he barely glued it in and used different glue than other stuff he had done. Also the bulkhead forward of that one is cracked and split on the bottom, so I think I may remake (or perhaps add a layer to) that piece out of some thicker ply and mount my EDF to it. Last two pics, the upper half of fuselage is way wider than lower half (I dont think he followed directions, LOL), so I am presently cutting out the glue bridge between glass and wood bulkheads and gonna attempt to make it match lower half. I might even chop the nose back off and line them all up, its driving me nuts how poorly he started this project and I'm not evn a perfectionist!! Any good glue choices? My motor mount idea sound good? Is there any type of solvent for loosening glue?

Devilbrad · Sep 20, 2009, 10:16 PM

Ordered up an RCLander 68mm EDF and mount, waiting to hear back from Scott at Little Screamers. In the meantime, I managed to separate the cowl PO glued on and separate the balsa from the upper fuselage and line everything up right. I didnt like the way the kit instructions have you put three pins in the upper fuselage and just slide it under cowl, so I made a receptacle for the pins and sanded down the cowl on the trailing edge to make it smaller and line up better with fuselage. With any luck, the three pieces will look like one some day!

Devilbrad · Oct 03, 2009, 02:11 PM

Still looking for ideas!

AceMigKiller · Oct 03, 2009, 11:09 PM

You gonna run the 5s LS1400 combo???
I'm kind of anxious to see this thing rip on that setup... get some video!!!

Devilbrad · Oct 04, 2009, 10:29 AM

Quote:

Originally Posted by AceMigKiller

You gonna run the 5s LS1400 combo???
I'm kind of anxious to see this thing rip on that setup... get some video!!!

Thats the plan! Right now I am trying to figure where fore and aft to mount the fan unit and best/lightest material to make the ducting from.

Sep 19, 2009, 07:08 PM	#41
Devilbrad Registered User Join Date: Sep 2009 Posts: 32	OK, there isnt balsa missing, looks like previous builder had actually started construction. I'm doing some planning here and have looked at the pics you guys posted of where your fans where mounted and trying to determine how and where I will put mine. I've also found some 3" ID carbon fiber tubing I was thinking of using for the ducting. Heres what PO has already done. Note the bulkhead for mounting the old Axiflo fan has come detached. Looks like he barely glued it in and used different glue than other stuff he had done. Also the bulkhead forward of that one is cracked and split on the bottom, so I think I may remake (or perhaps add a layer to) that piece out of some thicker ply and mount my EDF to it. Last two pics, the upper half of fuselage is way wider than lower half (I dont think he followed directions, LOL), so I am presently cutting out the glue bridge between glass and wood bulkheads and gonna attempt to make it match lower half. I might even chop the nose back off and line them all up, its driving me nuts how poorly he started this project and I'm not evn a perfectionist!! Any good glue choices? My motor mount idea sound good? Is there any type of solvent for loosening glue? Last edited by Devilbrad; Sep 19, 2009 at 07:47 PM.

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Sep 14, 2009, 08:46 PM	#31
AceMigKiller Team EJF >>>WHOOSH>>> Join Date: Jul 2004 Posts: 2,505	Brad, Don't be scared off! The HET 6904 is an excellent, proven fan. The only reason the warning came up is because you're pumping ALOT of power through the fan/JS1400 on 5s. As with ALL fans, you just gotta make sure your fan is balanced well, and doesn't stretch too much when you start spinning them at the very high levels achieved with the above setup. As for my recommendation... Yes, I love the Lander's Fan Shroud (Aluminum, slightly heavier, but makes for a strong fan shroud and an excellent heat sink, even on the JS1400 with a stand off mount. However, I also like the Minifan Pro Rotor! From my experience, it's a bit tougher than the Lander's stock rotor (which is also a good rotor), provides just a touch more thrust, and will undoubtedly handle the higher power levels alot better (less stretch/warpage). Not to mention it comes dynamically balanced! Schubies are also great fans. You are right, they are preeeetty pricy... not to mention pretty fragile... but they definitely make up for that in performance! If you're looking for EDF stuff online, I must throw in the obligatory www.EJF.com Great prices, excellent service. We've got all the stuff mentioned above with the exception of the Schubie. Vic

Sep 14, 2009, 08:55 PM	#32
bruff Team EJF Team Hacker Join Date: Jun 1999 Location: Gilbert, Az Posts: 5,269	The ones I'm building, one is HET 90 mm using HET inrunner on 8S(customer) and the other is 4" Hoyae using Hacker outrunner on 5S(mine). Pulling alot less AMPs 60 vs 105. I'm putting out approx. 4 lbs of thrust. No inlet tube, but I'm using the Aux inlet on mine but no blow in doors. Pictures going up soon. Bob

Sep 14, 2009, 09:14 PM	#33
Devilbrad Registered User Join Date: Sep 2009 Posts: 32	You guys must have fun in Arizona! I've always wanted to live there, seems to be a hot bed (literaly!!) of RC activity.

Sep 14, 2009, 09:46 PM	#34
AceMigKiller Team EJF >>>WHOOSH>>> Join Date: Jul 2004 Posts: 2,505	If you can bear 3-4 months of brutally hot summer (we just wake up earlier to go fly ), the rest of the year is NIIIICE. Lots of great talent here too! Bob Ruff is a legend, Clay Sherrow helped pioneer the new BIG EDF stuff, Electric Jet Factory was probably one of the first EDF guys seriously 'on the scene', and lets not forget Jim Drew and XPS, paving the way for the next generation of Speed Demons!!! Plus the AMA field, Superstition Airpark is home to the AZ Jet Rally and the AZ Electric Festival, some of the most well known events in the Jet/E-Flying world.

Sep 14, 2009, 10:32 PM	#36
Devilbrad Registered User Join Date: Sep 2009 Posts: 32	OK, back on track. Plane will be here tomorrow, I'll get pics of the air inlet for calculation purposes and post pics of all the virgin parts. Should I be worried about 27 year old balsa wood?

Sep 14, 2009, 10:46 PM	#37
bruff Team EJF Team Hacker Join Date: Jun 1999 Location: Gilbert, Az Posts: 5,269	No this one I'm building (fixed gear) is the original wood wing. bob

Sep 15, 2009, 07:53 PM	#39
AIR SALLY deltas are cool Join Date: Apr 2006 Location: Tehachapi ,CA. Posts: 7,705	Dons rc has the HET also he's in the vendors thread

Sep 15, 2009, 09:20 PM	#40
Devilbrad Registered User Join Date: Sep 2009 Posts: 32	Thanks all. Its here! Its here! I just opened it up and took a quick look and some pictures. I think there might be a couple balsa pieces missing. I'll have to lay everything out later and check, but no biggy. Also I mis-read the ad, it didnt come with the .21 engine. Again, no biggy. I still feel I got a good deal and cant wait to start building with all of your input. On to the pics.

Sep 20, 2009, 10:16 PM	#42
Devilbrad Registered User Join Date: Sep 2009 Posts: 32	Ordered up an RCLander 68mm EDF and mount, waiting to hear back from Scott at Little Screamers. In the meantime, I managed to separate the cowl PO glued on and separate the balsa from the upper fuselage and line everything up right. I didnt like the way the kit instructions have you put three pins in the upper fuselage and just slide it under cowl, so I made a receptacle for the pins and sanded down the cowl on the trailing edge to make it smaller and line up better with fuselage. With any luck, the three pieces will look like one some day!

Oct 03, 2009, 02:11 PM	#43
Devilbrad Registered User Join Date: Sep 2009 Posts: 32	Still looking for ideas!

Oct 03, 2009, 11:09 PM	#44
AceMigKiller Team EJF >>>WHOOSH>>> Join Date: Jul 2004 Posts: 2,505	You gonna run the 5s LS1400 combo??? I'm kind of anxious to see this thing rip on that setup... get some video!!!