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Search: Posts Made By: Art ARRO
Showing results 1 to 25 of 25
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Forum: RC Jets
08-26-2018, 04:29 AM
Replies: 4,649
Views: 1,044,216
Posted By Art ARRO

xxq111, Several sketches and dimensions for R54...

xxq111,
Several sketches and dimensions for R54 intakes are described in this thread, you have to dig back to find them. I don't know if a ready set of intakes are available.
Rgds,
Art ARRO
Forum: RC Jets
07-04-2018, 02:45 AM
Replies: 4,649
Views: 1,044,216
Posted By Art ARRO

Carlos, I still feel that the vent of your aux...

Carlos,
I still feel that the vent of your aux tank will drain the main tank due to gravity flow. Try a setup on the bench with the main higher in elevation compared to the aux and its vent.
Art
Forum: RC Jets
07-03-2018, 11:28 AM
Replies: 4,649
Views: 1,044,216
Posted By Art ARRO

Carlos, On your Post #4091 showing your planned...

Carlos,
On your Post #4091 showing your planned 80 oz fuel system layout, you should vent the main 60 oz tank, not the 16 oz auxiliary tank. Venting the aux tank will drain the main tank due to...
Forum: RC Jets
05-04-2017, 04:38 AM
Replies: 4,649
Views: 1,044,216
Posted By Art ARRO

Salmonbug, You can program crow or "butterfly"...

Salmonbug,
You can program crow or "butterfly" to the standard ailerons to kill lift on landings. There's some discussion on the designer's website on using crow for landings-no need to modify the...
Forum: RC Jets
07-13-2016, 11:50 AM
Replies: 4,649
Views: 1,044,216
Posted By Art ARRO

Johnny, You might want to recheck the flap...

Johnny,
You might want to recheck the flap throws and their deflection. This is best done with a pair of straight 10-12" long 1/4" balsa/spruce strips attached to each flap-use masking tape or...
Forum: RC Jets
07-09-2016, 03:19 AM
Replies: 4,649
Views: 1,044,216
Posted By Art ARRO

Johnny, Cutting and moving the outboard tip...

Johnny,
Cutting and moving the outboard tip upwards serves as a trim tab to correct any trim problems caused by a warped wing. The tip is just partially scored with an xacto and bent/cracked...
Forum: RC Jets
07-08-2016, 10:56 AM
Replies: 4,649
Views: 1,044,216
Posted By Art ARRO

Johnny, After checking the lateral balance and...

Johnny,
After checking the lateral balance and equalizing it you may want to recheck the aileron trim condition. A simple "trick" is to raise the tip portion, beyond the movable aileron to correct...
Forum: RC Jets
07-08-2016, 01:43 AM
Replies: 4,649
Views: 1,044,216
Posted By Art ARRO

Johnny, Congrats on the maiden-looking good. ...

Johnny,
Congrats on the maiden-looking good. For the start tube you should use steel stove pipe rather than aluminum dryer vent as the melting/deforming temps are much higher. Also the gap should...
Forum: RC Jets
06-30-2016, 02:34 PM
Replies: 4,649
Views: 1,044,216
Posted By Art ARRO

Johnny, You should be fine with a 45 cut on the...

Johnny,
You should be fine with a 45 cut on the Tygon overflow vent. What I've done is fabricate a fitting out of 5/32 brass tubing with one end cut at a 45. This is soldered to a brass plate...
Forum: RC Jets
06-30-2016, 07:59 AM
Replies: 4,649
Views: 1,044,216
Posted By Art ARRO

Johnny, There's several things you can do with...

Johnny,
There's several things you can do with your overflow vent. The easiest is to simply cut a 45 angle on the tubing facing the airflow. Next you can purchase some fancy overflow fittings from...
Forum: RC Jets
06-10-2016, 02:20 PM
Replies: 4,649
Views: 1,044,216
Posted By Art ARRO

Johnny, I just viewed your video and it appears...

Johnny,
I just viewed your video and it appears that the startup tube is too close to the turbine and causing the high temp during full power runs. Back this start tube so that there is a slight,...
Forum: RC Jets
06-10-2016, 02:09 PM
Replies: 4,649
Views: 1,044,216
Posted By Art ARRO

Johnny. Pull the EGT probe outward from the...

Johnny.
Pull the EGT probe outward from the tailcone- only about a 1/16th " or so and retry. This should lower your EGT and shutdown issues. However, it may take a might longer to ramp on starting....
Forum: RC Jets
06-09-2016, 03:25 PM
Replies: 4,649
Views: 1,044,216
Posted By Art ARRO

Johnny, With the trigger assembly mounted on...

Johnny,
With the trigger assembly mounted on the Powermax canister, nothing else attached, you should get a blast of butane/propane which instantly turns to a gas when the trigger is pulled. Do...
Forum: RC Jets
06-09-2016, 11:42 AM
Replies: 4,649
Views: 1,044,216
Posted By Art ARRO

Johnny, A check valve in the line going from...

Johnny,
A check valve in the line going from the off board tank to the turbine will stop any excess gas contained in the tank after disconnect. The ball valve in the line going from the tank to...
Forum: RC Jets
05-24-2016, 11:26 PM
Replies: 4,649
Views: 1,044,216
Posted By Art ARRO

Johnny, Sorry I didn't know where your UAT was...

Johnny,
Sorry I didn't know where your UAT was located- in relation to the CG. Typically the BTE Reaction requires quite a bit of nose ballast to balance properly-it can easily handle the weight ....
Forum: RC Jets
05-24-2016, 02:01 PM
Replies: 4,649
Views: 1,044,216
Posted By Art ARRO

Johnny, Twelve oz of lead to simulate a fully...

Johnny,
Twelve oz of lead to simulate a fully fueled UAT is a bit much-should be about 4 oz max. Rebalance with a 4 oz weight for the UAT and you may have to remove some of the nose ballast. To be...
Forum: RC Jets
05-24-2016, 01:49 PM
Replies: 4,649
Views: 1,044,216
Posted By Art ARRO

Woketman, It is hard to attach the 4mm fuel...

Woketman,
It is hard to attach the 4mm fuel line (from the pump to the turbine) to the 6mm Festo filter. Agree with using a 6 mm Festo upstream of the pump but that's not the usual place for it. ...
Forum: RC Jets
05-24-2016, 05:10 AM
Replies: 4,649
Views: 1,044,216
Posted By Art ARRO

Johnny, Sounds like a plan- good luck with the...

Johnny,
Sounds like a plan- good luck with the maiden and waiver qual.
Rgds,
Art ARRO
Forum: RC Jets
05-23-2016, 04:11 PM
Replies: 4,649
Views: 1,044,216
Posted By Art ARRO

Johnny, Like Mark said, get the JetCat filter...

Johnny,
Like Mark said, get the JetCat filter vertical or near-vertical. You can relocate it closer to the turbine for this. Also safety wire all the non-Festo fuel connections. You may get away...
Forum: RC Jets
05-22-2016, 11:25 AM
Replies: 4,649
Views: 1,044,216
Posted By Art ARRO

Johnny, Good explanation and glad you figured...

Johnny,
Good explanation and glad you figured it out. These are the little details that can frustrate you on your initial setup. Another method would be to slave an unused channel on your DX-18 and...
Forum: RC Jets
05-21-2016, 06:35 AM
Replies: 4,649
Views: 1,044,216
Posted By Art ARRO

Woketman, As stated earlier, I used the Festo 4...

Woketman,
As stated earlier, I used the Festo 4 mm filter without any problems until I saw a couple with split seams that leaked fuel into the jet. The 6 mm versions seem to be made better and...
Forum: RC Jets
05-20-2016, 08:54 AM
Replies: 4,649
Views: 1,044,216
Posted By Art ARRO

Johnny, On the Jet Cat filter you should hand...

Johnny,
On the Jet Cat filter you should hand tighten it initially then let it set overnight or so. On the second tightening you'll note that it will tighten some more as the O-ring compresses....
Forum: RC Jets
05-19-2016, 11:21 PM
Replies: 4,649
Views: 1,044,216
Posted By Art ARRO

Johnny, You can use one filter, preferably a...

Johnny,
You can use one filter, preferably a Hangar 9 or Jet Cat, between the pump and the turbine. I've used the Festo 4 mm myself but was warned against the leakage and switched to the Hangar 9...
Forum: RC Jets
05-19-2016, 01:25 PM
Replies: 4,649
Views: 1,044,216
Posted By Art ARRO

Johnny, You may want to exchange the Festo...

Johnny,
You may want to exchange the Festo filter as these are prone to leak. If on the suction side of the fuel pump then air bubbles may be introduced into the fuel flow-not good. If on the...
Forum: RC Jets
05-11-2016, 04:12 PM
Replies: 4,649
Views: 1,044,216
Posted By Art ARRO

Les, Note that the engines has to cool down to...

Les,
Note that the engines has to cool down to less than 100 C before a reliable restart. The 18" fuel feed should not be a problem IF this segment is downstream of the pump-if before the pump that...
Showing results 1 to 25 of 25


 
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