C-ARF Ultra Flash build Thread + Video
02-02-2011, 05:02 AM
#303
Thread Starter
RE: C-ARF Ultra Flash build Thread + Video
Pat
None really needed? It's as Mark showed.
It's the clearance on the top of the leg and axle thread only. The ply shims are in all Flash kits
Dave
None really needed? It's as Mark showed.
It's the clearance on the top of the leg and axle thread only. The ply shims are in all Flash kits
Dave
02-02-2011, 06:22 PM
#305
Join Date: Jul 2006
Location: , NY
Posts: 22
Likes: 0
Received 0 Likes
on
0 Posts
RE: C-ARF Ultra Flash build Thread + Video
I found the easyist way to deal with retract problems is to install a set of pro link retracts with BVM wheels and brakes. no problems. the only modifacation was to open the ply mount in the wing a little and your done!
02-02-2011, 11:46 PM
#306
Thread Starter
RE: C-ARF Ultra Flash build Thread + Video
The CARF set is fine, Behotec retracts are really reliable, AT legs strong and Intairco wheels now a little quieter, but Pro Link and Jet 1A all work and fit fine.
The issues mentioned are now being sorted...as I type, I had another email saying so, so soon all sets going out will be the easy fit they should be.
Dave
The issues mentioned are now being sorted...as I type, I had another email saying so, so soon all sets going out will be the easy fit they should be.
Dave
02-03-2011, 04:32 AM
#307
Senior Member
Join Date: Jan 2007
Location: tampa,
FL
Posts: 1,041
Likes: 0
Received 0 Likes
on
0 Posts
RE: C-ARF Ultra Flash build Thread + Video
i put the prolink trailing links on my classic flash. i used the bohetic retracts and got the pinned style prolinks. i used the inairco tires and brakes.. no problems.. still had to shave a little off the top of the strut ... i think like dave said these retracts are fine . we may have to do a little doctoring to get them right..
02-03-2011, 07:12 AM
#308
My Feedback: (14)
Join Date: Dec 2008
Location: Bakersfield, CA
Posts: 321
Likes: 0
Received 0 Likes
on
0 Posts
RE: C-ARF Ultra Flash build Thread + Video
Now if Dream Works could make the link like the new struts have or if Behotec could make a socket like the Dream Works...hmm.... then we could really have something.
John
John
02-03-2011, 01:41 PM
#309
Join Date: Jul 2006
Location: , NY
Posts: 22
Likes: 0
Received 0 Likes
on
0 Posts
RE: C-ARF Ultra Flash build Thread + Video
Hi Dave, I hope you don't think I was putting down the behotec gear. Its just that a few years back my friend purchased the flash with the behotec gear and that was before pro link was offered. when i bought my first flash i went on his recomendation to go with the pro link and the install went smooth. the Flash is still the best bang for the buck and they fly awsome. cant wait to fly the new UF. First we have about 3 feet of snow to melt!
02-03-2011, 01:56 PM
#310
Senior Member
Join Date: Jan 2007
Location: tampa,
FL
Posts: 1,041
Likes: 0
Received 0 Likes
on
0 Posts
RE: C-ARF Ultra Flash build Thread + Video
my ultra flash has arrived today.. my buddy who is building it said its the kermit the frog plane....i love the green.... now for the next painfull part. buying the 120sx...ouch!!!!hehehe
02-03-2011, 02:01 PM
#311
Thread Starter
RE: C-ARF Ultra Flash build Thread + Video
ORIGINAL: skynet33
Hi Dave, I hope you don't think I was putting down the behotec gear. Its just that a few years back my friend purchased the flash with the behotec gear and that was before pro link was offered. when i bought my first flash i went on his recomendation to go with the pro link and the install went smooth. the Flash is still the best bang for the buck and they fly awsome. cant wait to fly the new UF. First we have about 3 feet of snow to melt!
Hi Dave, I hope you don't think I was putting down the behotec gear. Its just that a few years back my friend purchased the flash with the behotec gear and that was before pro link was offered. when i bought my first flash i went on his recomendation to go with the pro link and the install went smooth. the Flash is still the best bang for the buck and they fly awsome. cant wait to fly the new UF. First we have about 3 feet of snow to melt!
Yep, I've ordered a second kit and our weather is improving...though not this weekend[
]Dave
02-04-2011, 08:27 AM
#314
My Feedback: (14)
Join Date: Dec 2008
Location: Bakersfield, CA
Posts: 321
Likes: 0
Received 0 Likes
on
0 Posts
RE: C-ARF Ultra Flash build Thread + Video
Objectivity is great.
I think this thread is worthy because we have been having some problems with these new Behotecs. I have not cared for the pin mount, but that is probably just a preference. There are two sets of set screws that must be maintained with locktite, and kept tight. A sudden twist on an uneven surface can flip a plane upside down on take off. I think the clamp set up is a little more secure. I like the long spring of these new struts, but one of the pins has had some problems. Found that i had to press the pin out, and discovered burs on the pin. Spun it up in a lathe, and now it springs back to straight. This had been one of the reasons for the non retracting. The gear sags and doesnt lock if the wheel doesnt pull all the way up into the wheel well. I only have 12 flights on my UF, but i think i have most of the gear issues behind me now. My last take off is when i almost lost it with a near inversion right at takeoff, an over correction, and i was then ok. The right leg had rotated. A deep flat spot, and a spacer should have kept it from doing this. So more locktite. I had done probably 50 or so touch and goes on a rather uneven surface, so i realize that a maintainance schedule is possibly a good idea. I find that this UF is capable of a longer glide slope than the older Flash. Added more flap, and that seems to slow it down more effectively. Im really loving this plane. The gear troubles are definitely worth working through, as the actual mechanism is amazing.
I think this thread is worthy because we have been having some problems with these new Behotecs. I have not cared for the pin mount, but that is probably just a preference. There are two sets of set screws that must be maintained with locktite, and kept tight. A sudden twist on an uneven surface can flip a plane upside down on take off. I think the clamp set up is a little more secure. I like the long spring of these new struts, but one of the pins has had some problems. Found that i had to press the pin out, and discovered burs on the pin. Spun it up in a lathe, and now it springs back to straight. This had been one of the reasons for the non retracting. The gear sags and doesnt lock if the wheel doesnt pull all the way up into the wheel well. I only have 12 flights on my UF, but i think i have most of the gear issues behind me now. My last take off is when i almost lost it with a near inversion right at takeoff, an over correction, and i was then ok. The right leg had rotated. A deep flat spot, and a spacer should have kept it from doing this. So more locktite. I had done probably 50 or so touch and goes on a rather uneven surface, so i realize that a maintainance schedule is possibly a good idea. I find that this UF is capable of a longer glide slope than the older Flash. Added more flap, and that seems to slow it down more effectively. Im really loving this plane. The gear troubles are definitely worth working through, as the actual mechanism is amazing.
02-06-2011, 10:20 AM
#315
Join Date: Jan 2006
Location: Colorado Springs,
CO
Posts: 530
Likes: 0
Received 0 Likes
on
0 Posts
RE: C-ARF Ultra Flash build Thread + Video
Pretty much finished - two days to spare before leaving for Phoenix and Speedworld's Desert Jet fly-in. Haven't gotten the strut covers on and still need to run the engine, but just finished shoveling snow, so don't know if that will get done in Colorado or Arizona. Anyway, a couple pics showing how I laid out the electronics, etc and a couple of the airframe. For what it's worth...
02-06-2011, 01:59 PM
#316
Join Date: Jul 2006
Location: , NY
Posts: 22
Likes: 0
Received 0 Likes
on
0 Posts
RE: C-ARF Ultra Flash build Thread + Video
ORIGINAL: mtnflyer14
Pretty much finished - two days to spare before leaving for Phoenix and Speedworld's Desert Jet fly-in. Haven't gotten the strut covers on and still need to run the engine, but just finished shoveling snow, so don't know if that will get done in Colorado or Arizona. Anyway, a couple pics showing how I laid out the electronics, etc and a couple of the airframe. For what it's worth...
Pretty much finished - two days to spare before leaving for Phoenix and Speedworld's Desert Jet fly-in. Haven't gotten the strut covers on and still need to run the engine, but just finished shoveling snow, so don't know if that will get done in Colorado or Arizona. Anyway, a couple pics showing how I laid out the electronics, etc and a couple of the airframe. For what it's worth...
02-06-2011, 10:06 PM
#317
My Feedback: (14)
Join Date: Dec 2008
Location: Bakersfield, CA
Posts: 321
Likes: 0
Received 0 Likes
on
0 Posts
RE: C-ARF Ultra Flash build Thread + Video
Has anyone found a fix for the 6mm pins twisting on the main gear? Lock tited and tightened and retightened every 6 to 10 landings. Some one suggested boring out to 8mm. Would that be a good idea? Has anyone else had to deal with this particular problem? Eight flights today, with a lot of landings. Eight minute flights with four minutes for touch and go landings. The plane is great, just the struts are loosening up. I did not have the original pins, as they were missing, had to make them up of ground stock. Flats filed into them - 2 flats on the retract end, both with set screws. The strut end has four set screws and seems to remain secure. What seems to be loosening are the pin to retract, not the pin to strut. I hope this is the right thread to ask questions on? Would alignment have much to do with this? Toe in or out? washers inboard, or perpendicular? I could re-do with more toe in as they appear to be completely 0 degree now. I have inboard washers under the retracts, so there is a little canting or splaying out. Will try this, if no other ideas are forthcoming. The long springs are amazing, and the best idea in a long time, so im not ready to give up on them yet. A friend with a new UF has switched to different retracts, keeping the struts, but he machined an interface for his struts, which seems to clamp on like the Prolink. I dont mind routine maintainance, but this has me concerned. I could take pictures of his mechanism next time i see him, but am interested to hear from others.
[]
[
]
02-06-2011, 10:13 PM
#318
RE: C-ARF Ultra Flash build Thread + Video
I have had 8 flawless flights on my Ultra Flash... The only thing that comes to mind when I fly this airplane is the term "SMOOTH"... Mine is powered with the classic P120... I think I will upgrade the engine after a few months to a Cheetah or similar thrust class engine... I want flat out speed to be even faster than it is.... I dont know if an engine upgrade will make that happen though... But so far this airplane is superb... I am so glad I bought it.
02-07-2011, 12:46 AM
#319
Thread Starter
RE: C-ARF Ultra Flash build Thread + Video
ORIGINAL: indubitably
Has anyone found a fix for the 6mm pins twisting on the main gear? Lock tited and tightened and retightened every 6 to 10 landings. Some one suggested boring out to 8mm. Would that be a good idea? Has anyone else had to deal with this particular problem? Eight flights today, with a lot of landings. Eight minute flights with four minutes for touch and go landings. The plane is great, just the struts are loosening up. I did not have the original pins, as they were missing, had to make them up of ground stock. Flats filed into them - 2 flats on the retract end, both with set screws. The strut end has four set screws and seems to remain secure. What seems to be loosening are the pin to retract, not the pin to strut. I hope this is the right thread to ask questions on? Would alignment have much to do with this? Toe in or out? washers inboard, or perpendicular? I could re-do with more toe in as they appear to be completely 0 degree now. I have inboard washers under the retracts, so there is a little canting or splaying out. Will try this, if no other ideas are forthcoming. The long springs are amazing, and the best idea in a long time, so im not ready to give up on them yet. A friend with a new UF has switched to different retracts, keeping the struts, but he machined an interface for his struts, which seems to clamp on like the Prolink. I dont mind routine maintainance, but this has me concerned. I could take pictures of his mechanism next time i see him, but am interested to hear from others.
[]
Has anyone found a fix for the 6mm pins twisting on the main gear? Lock tited and tightened and retightened every 6 to 10 landings. Some one suggested boring out to 8mm. Would that be a good idea? Has anyone else had to deal with this particular problem? Eight flights today, with a lot of landings. Eight minute flights with four minutes for touch and go landings. The plane is great, just the struts are loosening up. I did not have the original pins, as they were missing, had to make them up of ground stock. Flats filed into them - 2 flats on the retract end, both with set screws. The strut end has four set screws and seems to remain secure. What seems to be loosening are the pin to retract, not the pin to strut. I hope this is the right thread to ask questions on? Would alignment have much to do with this? Toe in or out? washers inboard, or perpendicular? I could re-do with more toe in as they appear to be completely 0 degree now. I have inboard washers under the retracts, so there is a little canting or splaying out. Will try this, if no other ideas are forthcoming. The long springs are amazing, and the best idea in a long time, so im not ready to give up on them yet. A friend with a new UF has switched to different retracts, keeping the struts, but he machined an interface for his struts, which seems to clamp on like the Prolink. I dont mind routine maintainance, but this has me concerned. I could take pictures of his mechanism next time i see him, but am interested to hear from others.
[
]
I have exactly your set up on my CF and same Behotec units with Jet 1A legs on my UF and neither have been a problem-the CF in hundreds and hundreds of flights.
First thing to check is with the pin out of the yoke does the grub (set) screw go through fully? I have seen some Behotec yokes where the thread did not go fully through so the set screw felt tight, but not on the pin...
I'd set for slight toe in as the wheels are on the outside and the natural play will allow the wheels to twist out slightly. I always load the wheel with finger pressure in the direction of drag to check the wheel running position.
What are you making your flats with? are they flat or curved? They need to be dead flat where the set screw seats.
We have around 9 Flashes in the local club and all have the stock pins without any problems
Dave
02-07-2011, 04:29 AM
#320
Senior Member
Join Date: Jan 2007
Location: tampa,
FL
Posts: 1,041
Likes: 0
Received 0 Likes
on
0 Posts
RE: C-ARF Ultra Flash build Thread + Video
DAVE ARE THESE PROBLEMS YOU ARE TALKING ABOUT ON THE OLD STYLE STRAIGHT LEG BOHETICS OR THE NEW BOHETIC TRAILING GEAR... DAVE YOU ARE USING THE STOCK BOHETIC TRAILING GEAR ON YOUR UF CORRECT?..THANKS PAT
02-07-2011, 07:55 AM
#321
Senior Member
Join Date: Mar 2002
Location: RaesfeldNRW, GERMANY
Posts: 463
Likes: 0
Received 0 Likes
on
0 Posts
RE: C-ARF Ultra Flash build Thread + Video
Hi guys!
After 3 months of bad weather and useless flying fields (due to bad weather), I finally managed to maiden my Ultraflash. A beautiful day with 15°C, a dry flying field and 20 km/h headwind with gusts of up to 40km/h. Damn, that Ultra is a nice plane. With the settings from Dave Wilshere it feels like I have flown it for ages, from the first minute. Minor aileron trimming and a fair bit of elevator needed, due to a slightly nose-heavy C/G. And with full flaps it lands like a trainer 40...
BR,
David
After 3 months of bad weather and useless flying fields (due to bad weather), I finally managed to maiden my Ultraflash. A beautiful day with 15°C, a dry flying field and 20 km/h headwind with gusts of up to 40km/h. Damn, that Ultra is a nice plane. With the settings from Dave Wilshere it feels like I have flown it for ages, from the first minute. Minor aileron trimming and a fair bit of elevator needed, due to a slightly nose-heavy C/G. And with full flaps it lands like a trainer 40...
BR,
David
02-07-2011, 09:42 AM
#323
Thread Starter
RE: C-ARF Ultra Flash build Thread + Video
ORIGINAL: ricardinho
DAVE ARE THESE PROBLEMS YOU ARE TALKING ABOUT ON THE OLD STYLE STRAIGHT LEG BOHETICS OR THE NEW BOHETIC TRAILING GEAR... DAVE YOU ARE USING THE STOCK BOHETIC TRAILING GEAR ON YOUR UF CORRECT?..THANKS PAT
DAVE ARE THESE PROBLEMS YOU ARE TALKING ABOUT ON THE OLD STYLE STRAIGHT LEG BOHETICS OR THE NEW BOHETIC TRAILING GEAR... DAVE YOU ARE USING THE STOCK BOHETIC TRAILING GEAR ON YOUR UF CORRECT?..THANKS PAT
Dave
02-07-2011, 09:44 AM
#324
Thread Starter
RE: C-ARF Ultra Flash build Thread + Video
ORIGINAL: tahfiet
Hi guys!
After 3 months of bad weather and useless flying fields (due to bad weather), I finally managed to maiden my Ultraflash. A beautiful day with 15°C, a dry flying field and 20 km/h headwind with gusts of up to 40km/h. Damn, that Ultra is a nice plane. With the settings from Dave Wilshere it feels like I have flown it for ages, from the first minute. Minor aileron trimming and a fair bit of elevator needed, due to a slightly nose-heavy C/G. And with full flaps it lands like a trainer 40...
BR,
David
Hi guys!
After 3 months of bad weather and useless flying fields (due to bad weather), I finally managed to maiden my Ultraflash. A beautiful day with 15°C, a dry flying field and 20 km/h headwind with gusts of up to 40km/h. Damn, that Ultra is a nice plane. With the settings from Dave Wilshere it feels like I have flown it for ages, from the first minute. Minor aileron trimming and a fair bit of elevator needed, due to a slightly nose-heavy C/G. And with full flaps it lands like a trainer 40...
BR,
David
Con Grats! Glad you like it as much as the other people who have flown her.
Dave