Club Pylon Comps

[Gareth]

Meeting held in Gareth's Dining room starting at 19:00.

Attendees:
Bob,
Gareth,
Phil,
Tim.

1: Limitations on the build:
No build limitations other then should be based upon the Slipso. Glassing will be required on the front section (help can be provided).
The motor, prop and cell count should be the same to ensure all models go the same speed.

2: Pylon distance
100m was decided on, the greater the distance between the pylons will give you more thinking time and then make the model feel slower.

3: Laps
5 laps to start with, intention of going up to 10 in time. with 5 laps, keeping it tidy it will last 1 minute 30, it was thought that at the start this will be enough.

4: round or pass the pylons
Round the pylons, this was thought as it will ensure that people are aiming for the same target each time.

5: Motor, battery and prop

After doing some more research after the meeting it was determined that the 2200KV motor from GiantCod would do the job very nicely. This motor on a 2s pack with a 4.7 x 4.7 (APC) will pull 9 amps and provide a proposed of 62MPH. This will need a 3.17mm prop adapter and a spinner, i would suggest something like this from RBC kits, please put any other ideas and findings forward. This might be worth doing as a bulk order, get the same motor and spinner, Slough models sell the 4.7x4.7 APC props or again they can be done in a bulk order. The ESC i have found will do 20 amps and seems to be a good price from GiantCod.

6: pylon construction
It was thought that the poles from eBay were a good idea, they are cheap, small and easy. These would be located in to the ground using plastic tube set in the ground. Tim has offered to make a sleeve that will go over the pole and provide location for the pilots to see.

7: Timing method
To do the timing we will need one stopwatch for each model in the sky at the time, it was thought to get 2 stopwatches so they are the same if we do ever need to race more them one model at a time. At the start it was thought that one model in the sky at a time would be enough.

8: AOB
A: Additional kit:
whistles, these can be used to identify a cut so that the pilot knows that they need to go further on the next lap.
B: Cut punishment:
If you cut 10 seconds will be added to your time, 3 cuts your out.

Meeting finished at 21:00.

[Gareth]

I have just emailed the company to find out when the kits are expected, i haven't heard anything since they said the cutting machine went down.

I have checked stock and it shows that they have +3 in stock so they have cut some more but i am still waiting on a box. I will let you all know when it turns up.

Gareth

[phild]

I would like to thank Gareth for all the work he has put in on our behalf, and hope that this venture goes as we all would hope it to do. I am now going to order the bits and pieces decided on for our power train so that I am good to go when the kit arrives.
Thanks Gareth.

Phil

[Gareth]

I have got an email back from the supplier:

They are ready to ship. They've actually been done and boxed up for a week and a half, but I got your invoice mixed up with another customer who wanted the order held until they finished a move.

It will ship out today.

Gareth

[andyb]

You Britain’s would not have an issue with a hand made wooden prop would you? 

In your particular case, Dave, I think we can make an exception  . How long were you expecting it to last...?

A.

[Gareth]

On the prop front id have said... first landing.

I have had a confirmation email from the supplier, they have now shipped the kits and i have a tracking number, i will keep you all informed.

Gareth

[phild]

We have talked about the rest of the kit for the Slipso, except batteries. You can use whichever battery you want as long as its 2s. I have just ordered 4 2s 2200 20c zippy Flightmax from Hobby City at just $8.79 that is US dollars each. they also do a 30 mm 3.17 aluminum spinner the same as the one from Giant Cod but 5mm smaller.
The battery dimensions are:- Weight 123 Gms, 100mmX34mmX17mm. I think they come with a deans connector and a JST/XH balance tap
Phil

[phild]

I have today received the stuff I ordered from Giant cod, the delivery was quick and accurate, everything looks OK, however the ESC is a little basic it hasn't even got a sticker on it telling you what it is, never mind, we will see if it works OK its not as if it will be too stretched with the power system we are using.

Phil

[Tim Marshall]

I've glassed my stab and fin with lightest cloth using the 'wax bag' technique mentioned to me by Gareth.  The method was make a sandwich of kitchen paper pad, waxed paper, stab/fin with the cloth epoxied on, wax paper paper padding all laid on a flat board with another board on top and lots of weight.  However,  instead of the kitchen paper padding I substituted some thin polyeurethane foam and replaced the wax paper for polyethelene film.  Result almost perfect, If I had not been too mean with the epoxy all the edges would have stuck but it was easily remedied with some thin cyano rubbed onto those areas.  Hope this helps someone.

[phild]

Just received my batteries from Hobby king zippy flightmax 2s 22ooma they were all perfectly balanced and at 56% charge only down side they didn't have deans connectors but I have just spent half an hour soldering them on, at no cost as they sent me a free pack of ten last time I received an order. Not bad in 4 days order to receipt.
Phil

[phild]

I was reading a thread on covering the wings of a Slipso last night, the guy covered his with PVA glue and best brown paper, and then a plastic film of your choice it looked good and I shouldn't think a bit of brown paper would add to the weight too much.
Phil

[Gareth]

Shipment update:

7:50 AM on February 13, 2010

Package left the USA.

Gareth

[Tim Marshall]

All we need now is for cutoms to ignore it! 
My plan build is coming on slowly.  Just done the aileron torque rods with the paper tube bearings.  tubes are a bit of a bu**er, had to do them twice to get them thin enough.  Now I have to re-do the front bulkhead as its in the wrong place for my motor.  The kit model's F1 of course will be at the front to suit the selected motor which arrived last week. 
THe wing was coated with sanding sealer before a coat of the lightest glass and poly C (WBPU).  It did not warp, Hooray,  but the glass did not adhere to some exposed Aliphatic glue? (laminated wing)
so that needs a little attention.

I note that on the RCgroups slipso thread that some people opted to make the wing a little thicker and therby obtained a slightly better airfoil,  I think that such a mod. could be allowable,  anyone disagee?

[Gareth]

Tim,

I don't know what wing wood is going to be provided in the kit,  I don't think the better airfoil would give better flight as it will be pulling the model up, you will want it reasonably stable so that its attitude doesn't change through the speed range.

The kits have been sent as priority international mail, i don't know if that will cause more concern or that they will let more go through 

If they don't get stopped then i can only hope that they will be with me for the weekend and then anyone coming to help dig can collect and start building.

Gareth

[crazy frog]

Hi Gareth, just for info attached is a pic of the first mini wasp cut and comparison to the original, 3s and 2 s batteries will fit, test one to build then i can work out wing loadings and see what motor combos will work

ive got a second hand slipso wingig its way to me from a mate

cheers