C-ARF Ultra Flash build Thread + Video
#6380
My Feedback: (4)
CARF Ultra Flash Fuselage Swap How To Video #5. Composite-ARF classic flash
https://youtu.be/0c8vMUAhoFA
https://youtu.be/0c8vMUAhoFA
#6384
#6385
Join Date: Aug 2010
Location: Berkshire, UNITED KINGDOM
Posts: 106
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I try to build light, I had a 140rx in it to start with and had to use some big batteries up front to balance, I then switched to a jets munt 100, which meant I lost some nose weight to, I find this combination really nice, on full power it still picks up a fair bit of speed, enough for our grass site location, if you have unlimited air space and want 200 plus mph then go for the bigger turbines,
#6386
My Feedback: (1)
Fixed it for ya:
https://youtu.be/0c8vMUAhoFA
https://youtu.be/0c8vMUAhoFA
Appreciate it!
#6388
Thread Starter
Jon your stickers are in the post. On Electron brakes could you have swapped the units and had the plug on the front? Not sure if it would clear still, but maybe?
#6389
My Feedback: (1)
Good call on the brakes! Based on the design they should be swappable between sides but I'm not sure that would have allowed the clearance but definitely worth a try on the next build!
It may be just enough clearance with the slight natural angle of the Electron Legs. If brakes were swapped than the leg angle screws could also be adjusted slightly to allow the leg to have a bit more trail at it's resting point.
#6390
My Feedback: (4)
Izzy
I've flown my Classic Flash for 5 years on DSM-2 without an issue and now the Ultra Flash for 2 years with the same set up. One remote in the nose, One on the tank and the RX 921 JR as shown. Powerbox Sensor Switch 2 x 3000 Li-Po packs I can do 12-15 flights without charging.
Dave
I've flown my Classic Flash for 5 years on DSM-2 without an issue and now the Ultra Flash for 2 years with the same set up. One remote in the nose, One on the tank and the RX 921 JR as shown. Powerbox Sensor Switch 2 x 3000 Li-Po packs I can do 12-15 flights without charging.
Dave
#6391
Thread Starter
No idea, never had and issue and I’m still flying DSM-2 with that exact model and it’s near 1000 flights. The one on front of the tank was for height on the airframe when the aeroplane was coming towards me on landing, but going away very low the signal is going through the fuel and I’ve never had a brown out on that antenna.
#6393
Thread Starter
No, there are too many variables, like the carbon in the fuselage. Just remember the signal is nit line of sight, it will go around the tank if it does not go through.
We taped all the JR DMSS aerials to an actual carbon plate, turned it vertical so none of the aerials we free from Carbon and it reduced the range a few paces
We taped all the JR DMSS aerials to an actual carbon plate, turned it vertical so none of the aerials we free from Carbon and it reduced the range a few paces
#6394
My Feedback: (4)
No, there are too many variables, like the carbon in the fuselage. Just remember the signal is nit line of sight, it will go around the tank if it does not go through.
We taped all the JR DMSS aerials to an actual carbon plate, turned it vertical so none of the aerials we free from Carbon and it reduced the range a few paces
We taped all the JR DMSS aerials to an actual carbon plate, turned it vertical so none of the aerials we free from Carbon and it reduced the range a few paces
#6395
My Feedback: (4)
Dave, I know you are still a fan of the felt clunks, but I was reading back in this thread around page 80 where guys that are running jet A or diesel were having problems with them clogging up and turning rock hard. Has the material for the clunks changed? Or are you only still a fan because you run Kerosene?
#6396
Thread Starter
I am a huge fan, it’s all I use. But you are right some fuels need cleaning and algae killed. I have lots of customers who use felt clunks and JetA-1 without an issue here. I always wondered if temperature and humidity have the biggest influence on these issues.
When I used to come to the US to fly at FJ or Florida International Jet Rally I just bought kerosene from Home Depot type shops.
Dave
When I used to come to the US to fly at FJ or Florida International Jet Rally I just bought kerosene from Home Depot type shops.
Dave
#6398
Thread Starter
It’s the difference between never having a flame out and having one. In 22 years I have never had a fuel related flame out and my turbine flame outs are counted on one hand, I have multiple turbines in the super high hour class, my friends who all use the same fuel and oil have 100+ hour turbines and the cost of one airframe is a lot of fuel. Just my 2c
In the UK I buy kerosene from the refinery and the difference is smaller, around 30% more than JetA. I would say there is a 70:30 split in uk Jet modellers Paraffin/JetA
Dave
In the UK I buy kerosene from the refinery and the difference is smaller, around 30% more than JetA. I would say there is a 70:30 split in uk Jet modellers Paraffin/JetA
Dave
#6399
My Feedback: (4)
Nobody runs diesel in the UK? I actually get Jet A for free(but not from a station pump, I have to strain it through a water separator as it's fuel sumped from our jets at work) but still use diesel due to the lower sulfur content, higher energy density, and its at nearly every gas station. I would consider running Kero here in the US if it were even double the cost of Jet A or diesel, but not at 4x the cost. Even if I buy it in 55 gallon drum bulk it's still $10+ per gallon.
I've never heard of people having flameouts specifically because they chose diesel over kerosene. But everyone I know that runs jet A or diesel runs either a pleated paper filter or metallic filter and a regular dubro/BVM clunk in the main tank.
I've never heard of people having flameouts specifically because they chose diesel over kerosene. But everyone I know that runs jet A or diesel runs either a pleated paper filter or metallic filter and a regular dubro/BVM clunk in the main tank.
Last edited by bodywerks; 01-19-2020 at 03:17 AM.
#6400
My Feedback: (64)
Is fuel pump kerosene different than the stuff purchased at home stores? Here in CT, the last time I looked Kerosene at the gas stations was between $3.50 and $4.00.
I too have been running diesel for convenience, but am curious if it will clog felt clunks.......if so, it gas pump kero ok?
I too have been running diesel for convenience, but am curious if it will clog felt clunks.......if so, it gas pump kero ok?