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Search: Posts Made By: Dave Wilshere
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Forum: RC Jets
07-10-2021, 11:07 PM
Replies: 704
Views: 200,032
Posted By Dave Wilshere

If you have 2mm UP mixed with flap you are...

If you have 2mm UP mixed with flap you are running nose heavy.
The Viper’s huge tail hides this situation well, it’s why people have been flying this aeroplane nose heavy since it was designed.
...
Forum: RC Jets
07-09-2021, 10:49 PM
Replies: 704
Views: 200,032
Posted By Dave Wilshere

Sven OK, yes, altitude will influence the...

Sven

OK, yes, altitude will influence the wing performance a huge amount. We fly only 50m above sea level. CROW is going to reduce the wings lift, so I don’t see that helping you here.
Are you...
Forum: RC Jets
07-09-2021, 01:05 PM
Replies: 704
Views: 200,032
Posted By Dave Wilshere

I have a little experience too. I think I have...

I have a little experience too. I think I have flown 12-15 Carf Vipers…you?
Forum: RC Jets
07-09-2021, 01:03 PM
Replies: 704
Views: 200,032
Posted By Dave Wilshere

I don’t see too much flap…maybe not enough power....

I don’t see too much flap…maybe not enough power.
First question what flying weight?
Second Question what balance position?
My balance method is in this thread a few pages back.
This is not one...
Forum: RC Jets
07-09-2021, 12:55 PM
Replies: 704
Views: 200,032
Posted By Dave Wilshere

I don’t see how too much flap is the issue…IF it...

I don’t see how too much flap is the issue…IF it was too slow than it lacked power.
First question would be what is the weight?
Second, where is it balanced?

My method and position is in this...
Forum: RC Jets
05-22-2021, 12:00 PM
Replies: 704
Views: 200,032
Posted By Dave Wilshere

Yep, never flown at those altitudes, but know the...

Yep, never flown at those altitudes, but know the physics.
Forum: RC Jets
05-20-2021, 10:03 AM
Replies: 704
Views: 200,032
Posted By Dave Wilshere

Should climb in KE with a 160…

Should climb in KE with a 160…
Forum: RC Jets
05-19-2021, 09:10 PM
Replies: 704
Views: 200,032
Posted By Dave Wilshere

If you balance as the manual no…it hardly holds a...

If you balance as the manual no…it hardly holds a KE at full power. As I balance it you can fly KE circuits, it’s just not that type of Jet normally.
Forum: RC Jets
05-11-2021, 12:10 PM
Replies: 704
Views: 200,032
Posted By Dave Wilshere

Out of tank, up high above tank in a loop, then...

Out of tank, up high above tank in a loop, then straight down and out. Each way up the fuel head stops siphoning when the fuel draw is not high enough to stop it venting.
Forum: RC Jets
05-11-2021, 11:34 AM
Replies: 704
Views: 200,032
Posted By Dave Wilshere

The question was are you checking the balance...

The question was are you checking the balance with everything installed.

Still too long…
Forum: RC Jets
05-08-2021, 12:32 PM
Replies: 704
Views: 200,032
Posted By Dave Wilshere

No, I’m asking whether the balance check included...

No, I’m asking whether the balance check included all the items. Your set up looks nose heavy.

Because the air that has to go in to replace fuel is dragged along the long tube line.
Forum: RC Jets
05-08-2021, 10:01 AM
Replies: 704
Views: 200,032
Posted By Dave Wilshere

I loop the clear tube when it’s close. No heat...

I loop the clear tube when it’s close. No heat needed.
Tygon on filler is right.
All you need is the pipe looping up above the height of the tank and it won’t siphon. A long overflow promotes high...
Forum: RC Jets
05-07-2021, 10:32 AM
Replies: 704
Views: 200,032
Posted By Dave Wilshere

You should really use the SMC clear for both the...

You should really use the SMC clear for both the tank supplies, plus keep the overflow tube as short as possible…
Tygon will collapse slightly under maximum draw.
Forum: RC Jets
05-02-2021, 06:51 AM
Replies: 704
Views: 200,032
Posted By Dave Wilshere

Yes, as posted. Tails and canopy glass on. Just...

Yes, as posted. Tails and canopy glass on. Just no wings.
Forum: RC Jets
05-01-2021, 10:51 PM
Replies: 704
Views: 200,032
Posted By Dave Wilshere

It’s an aeroplane with a huge stabiliser, so the...

It’s an aeroplane with a huge stabiliser, so the balance range is also large. The Rebel series are also similar. Using the no wings, balance on the wing fixing screw holes you end up with a perfect...
Forum: RC Jets
05-01-2021, 02:06 PM
Replies: 704
Views: 200,032
Posted By Dave Wilshere

Most of ours the batteries are back of the...

Most of ours the batteries are back of the canopy,..with light JR servos even around the fuel tank.
Forum: RC Jets
12-12-2020, 10:18 AM
Replies: 704
Views: 200,032
Posted By Dave Wilshere

The door is supplied long enough to open the hole...

The door is supplied long enough to open the hole to suit, we take out the steering servo mount rail..
Forum: RC Jets
12-10-2020, 09:54 PM
Replies: 704
Views: 200,032
Posted By Dave Wilshere

Yes, also for the original Air leg. Unless a...

Yes, also for the original Air leg. Unless a manufacturer only offers the design with one choice undercarriage its best to have it undersized...without making opening the hole an impossible job! ...
Forum: RC Jets
12-10-2020, 12:20 PM
Replies: 704
Views: 200,032
Posted By Dave Wilshere

Ignore the manual balance point, it needs to be...

Ignore the manual balance point, it needs to be way behind where the designer put it. I think I put my figures in an earlier post. You may struggle to get the 8911 in the tailplane, it will need some...
Forum: RC Jets
11-26-2020, 10:08 PM
Replies: 704
Views: 200,032
Posted By Dave Wilshere

The tail servos used make a big difference in the...

The tail servos used make a big difference in the balance requirement, since the manual balance is so nose heavy, with JR servos in the tail we have Vipers with all three batteries on the fuel tank...
Forum: RC Jets
08-23-2020, 11:31 AM
Replies: 704
Views: 200,032
Posted By Dave Wilshere

Behotec C-36 and C-50 are the daddy of air...

Behotec C-36 and C-50 are the daddy of air retracts. My original Classic Flash is 14 years old and the gear and valve are perfect still.
Forum: RC Jets
08-22-2020, 06:59 AM
Replies: 704
Views: 200,032
Posted By Dave Wilshere

We add a strip 6mm deep and 2mm wide to each side...

We add a strip 6mm deep and 2mm wide to each side and then put a 1mm glass plate over the whole lot.

The kit has not updated yet because of the number of people still with Air retracts. Soon I...
Forum: RC Jets
08-20-2020, 02:10 AM
Replies: 704
Views: 200,032
Posted By Dave Wilshere

You get used to the hole! I like doors as we fly...

You get used to the hole! I like doors as we fly on grass throughout the year, but other than that it’s another failure point

Good to hear like everyone you like the balance
Forum: RC Jets
08-19-2020, 09:05 PM
Replies: 704
Views: 200,032
Posted By Dave Wilshere

Stan In the UK it’s about 50/50 with and...

Stan

In the UK it’s about 50/50 with and without and to be honest I can’t notice a difference. Balance is the most important update you can make 🙂

Dave
Forum: RC Jets
07-12-2020, 08:42 AM
Replies: 704
Views: 200,032
Posted By Dave Wilshere

I bet you are nose heavy and can take the lead...

I bet you are nose heavy and can take the lead out. All of ours have the batteries around the fuel tank. The huge tail masks the nose heavy set up- even super nose heavy no elevator trim is seen....
Showing results 1 to 25 of 102
 


 
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