Search: Posts Made By: sahartman21
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Forum: Q-40 Racing
05-12-2019, 06:12 PM
Replies: 134
Views: 10,984
Posted By sahartman21

Here is a sport or Warbird Class version of the...

Here is a sport or Warbird Class version of the model:

https://www.theworldmodels.com/store/product/13938/Vendetta-Red-White-with-Electric-Retracts
Forum: Q-500 Racing
04-14-2019, 07:13 AM
Replies: 7
Views: 558
Posted By sahartman21

I put a vertical sheer of carbon on mine and the...

I put a vertical sheer of carbon on mine and the wings are good for the fastest classes.

http://www.rcuniverse.com/forum/q-500-racing-149/11622590-sheet-q500-wing.html
Forum: Q-40 Racing
01-03-2019, 09:18 AM
Replies: 6
Views: 653
Posted By sahartman21

Apereira, If it was my engine I would run it...

Apereira,

If it was my engine I would run it rich (22,000 rpms) in the air for a couple more flights. You can start leaning it out later.

The stock head clearance is about 19 thousandths. I...
Forum: Q-40 Racing
12-26-2018, 05:23 PM
Replies: 6
Views: 653
Posted By sahartman21

Dear Apereira, Try to find someone in your...

Dear Apereira,

Try to find someone in your area that currently flies a Q40 model. Running a Q40 engine is different then running a traditional model engine.

Here are some of the basics for...
Forum: Q-500 Racing
12-13-2018, 04:09 PM
Replies: 69
Views: 8,071
Posted By sahartman21

If it pitches upward in the turn you will need to...

If it pitches upward in the turn you will need to add some weight on the left wing tip.

It will need about 2 to 3 quarters on the left wing tip to stop the climb.
Forum: Q-500 Racing
06-11-2018, 03:48 PM
Replies: 69
Views: 8,071
Posted By sahartman21

Build a Wood Q500 Fuselage

I use nylon bolts from either a hardware store or from online.

https://www.microfasteners.com/home.php?cat=760
04-04-2018, 05:46 PM
Replies: 34
Views: 1,930
Posted By sahartman21

Thank you for your recent attempt to improve the...

Thank you for your recent attempt to improve the forum experience on RC Universe.

I consider myself a power contributor in the Pylon Universe forum.

The recent change to picture addition adds...
03-25-2018, 10:15 AM
Replies: 3
Views: 463
Posted By sahartman21

Correcting the thrust line should help the take...

Correcting the thrust line should help the take off.

Also check the CG and make sure that you are not tail heavy.
Forum: Q-40 Racing
03-18-2018, 03:53 PM
Replies: 134
Views: 10,984
Posted By sahartman21

Build a Miss Ashley - Revisited

https://cimg5.ibsrv.net/gimg/www.rcuniverse.com-vbulletin/640x480/img_9845_8c997a86d7cd7a95d3c054c09f83dd682e345c94.jpg

This evening the horizontal stabilizer was attached to the fuselage.
Forum: Q-40 Racing
03-11-2018, 02:44 PM
Replies: 134
Views: 10,984
Posted By sahartman21

Build a Miss Ashley - Revisited

I've been continuing on the second model.

Below are some pictures showing progress on the tail surfaces.
Forum: Q-40 Racing
03-08-2018, 05:51 PM
Replies: 134
Views: 10,984
Posted By sahartman21

Build a Miss Ashley - Revisited

Below are links to the carbon fiber products used in the model:

7 and 14 thousandths carbon fiber laminates:

http://www.cstsales.com/carbon_laminates_48.html

Carbon Fiber Tow (12K)
...
Forum: Q-40 Racing
03-03-2018, 12:04 PM
Replies: 134
Views: 10,984
Posted By sahartman21

Build a Miss Ashley - Revisited

I've continued on my other Miss Ashley. The cutout template was taped on and I used a model knife to mark the location of the cuts.

The template is a big success and it saved me significant time...
Forum: Q-40 Racing
03-03-2018, 11:54 AM
Replies: 134
Views: 10,984
Posted By sahartman21

Build a Miss Ashley - Revisited

The first flights on the Miss Ashley were uneventful. The model needed some aileron trim and some down trim to fly to my satisfaction. I also added some tail weight to increase the elevator...
Forum: Q-40 Racing
02-27-2018, 09:55 AM
Replies: 134
Views: 10,984
Posted By sahartman21

Build a Miss Ashley - Revisited

I added some tail weight to balance the model at 3 7/8" back from the front of the wing saddle.

The tape was later removed and I plan to use about 0.35 ounces of lead-epoxy mix (the weight of the...
Forum: Q-40 Racing
02-26-2018, 05:11 PM
Replies: 134
Views: 10,984
Posted By sahartman21

Build a Miss Ashley - Revisited

The gear length should be between 1 3/4" to 2 1/4" (to the axel). Start at 2 1/4" and verify that there is approximately 1/2" prop clearance when the wing is at zero incidence.

On the second model...
Forum: Q-40 Racing
02-26-2018, 04:59 PM
Replies: 134
Views: 10,984
Posted By sahartman21

Build a Miss Ashley - Revisited

My Jett CG tank is located on a piece of firm foam so that the bottom of the tank is about 7/8" above the wing.

A relatively high tank is necessary to insure that the engine does not go lean when...
Forum: Q-40 Racing
02-18-2018, 03:35 PM
Replies: 134
Views: 10,984
Posted By sahartman21

Build a Miss Ashley - Revisited

These are the approximate throws required on each control surface based upon a model balanced at 3 3/4" to 3 7/8" back from the front of the wing saddle:

Elevator low rate = 7/64" up and less...
Forum: Q-40 Racing
02-17-2018, 07:39 AM
Replies: 134
Views: 10,984
Posted By sahartman21

Build a Miss Ashley - Revisited

Here are a few pictures of the completed model:
Forum: Q-40 Racing
02-16-2018, 06:12 PM
Replies: 134
Views: 10,984
Posted By sahartman21

Build a Miss Ashley - Revisited

Here are more pictures showing radio and engine installation:
Forum: Q-40 Racing
02-16-2018, 02:25 PM
Replies: 134
Views: 10,984
Posted By sahartman21

Build a Miss Ashley - Revisited

The elevator was cut free and a small piece of tape (medical tape) was applied at the corners. This reduces the possibility of flutter and hinge damage.

We now must have the FAA number on your...
Forum: Q-40 Racing
02-16-2018, 02:18 PM
Replies: 134
Views: 10,984
Posted By sahartman21

Build a Miss Ashley - Revisited

Here are some pictures showing the ailerons being cut free and the servo being reinstalled:

The servo works equally as well in this location as in a hole cut on top of the wing.
Forum: Q-40 Racing
02-14-2018, 06:57 PM
Replies: 134
Views: 10,984
Posted By sahartman21

Build a Miss Ashley - Revisited

The model is now ready to reinstall the radio, engine, and tank.

With a little luck the first flights will be next week in Phoenix.
Forum: Q-40 Racing
02-14-2018, 06:54 PM
Replies: 134
Views: 10,984
Posted By sahartman21

Build a Miss Ashley - Revisited

A cutoff disk was used to gently cut through the inside layer of fiberglass cloth between the foam core and wood.

Take your time and don't cut too deep.
Forum: Q-40 Racing
02-14-2018, 06:51 PM
Replies: 134
Views: 10,984
Posted By sahartman21

Build a Miss Ashley - Revisited

This evening the model was wet sanded (800 or 2000 grit sandpaper) to remove any grit present in the finish. I followed by polishing and waxing.

Pictures are shown below:
Forum: Q-40 Racing
02-13-2018, 05:48 PM
Replies: 134
Views: 10,984
Posted By sahartman21

Build a Miss Ashley - Revisited

The wind settled down this evening and so I took the opportunity to spray on the clear coat.

I used a clear coat intended for spot repairs as that type dries fast and works well. I thinned the mix...
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