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Precedent Stampe 1/4 Scale

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Nick Santovito06/06/2020 18:59:20
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431 forum posts
63 photos

I used pull pull on the rudder and elevator, with the servos near the bottom wing hold down block. Didn't use real diagonals between the interplane struts because I set up my struts to fold against the bottom of the top wing. but I did tie some elastic thread between them. Lasted about one season.

For all strut and wire attachments, I used Dubro steel clevises and .03" brass sheet fittings. that way I only have to unsnap 3 strut clevises on each side and 2 flying wire clevises on each side after bolting on the wings.

here is my build thread at the page with most of the fitting pics. (along with the compartment holding the 5000 mah A123 pack)

Build thread

bert baker06/06/2020 19:42:34
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1609 forum posts
331 photos

Had a Saito 125 Golden Knight in one and it was fine

do preref to have cross bracing on the struts and do like to have flying wires

Have fun

Stuphedd07/06/2020 19:08:33
709 forum posts
374 photos

img_2217.jpg Sta SilJust too wet to fly today , so made me a wrap round Pitts type silencer for the DLE ,It still needs welding . It almost fits inside the cowling, will only need a small blister .smileyimg_2216.jpg Sta Sil You might want to turn it upside up !!

Glenn Ryan09/06/2020 05:32:56
76 forum posts
1 photos

Hello Folks,

I'm not sure if I've asked this before but i'll ask anyway haha. Are the flying wires on these functional or not?

cymaz09/06/2020 05:39:03
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9279 forum posts
1200 photos

No. Don’t forget that the wing struts are!

Glenn Ryan09/06/2020 05:44:46
76 forum posts
1 photos

Oh for sure. If the wires aren't functional it just makes it a bit easier to design a quick connection method to make at the field assembly much quicker smiley

cymaz09/06/2020 06:01:03
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9279 forum posts
1200 photos

I’ve used clevis links and nylon fishing trace wire. Just a simple job of unclipping everything. The “closed loop “ on the aileron was just black elastic.

finished c-fxme 010.jpg

Glenn Ryan09/06/2020 06:17:09
76 forum posts
1 photos

Excellent yes

Martin Underhill11/06/2020 20:53:01
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3 forum posts
4 photos

The servos were just in front of the tailplane, weighing 240 gm, moving them under the pilot has reduced the ballast by ~ 400 gms

Huge difference!

cymaz11/06/2020 22:45:07
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9279 forum posts
1200 photos

It’s surprising how moving “useful “ weight can reduce the need for ballast.

Geoff Gardiner04/07/2020 16:29:10
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544 forum posts
917 photos

Laser Jon,

If you are still tuned into this thread - what size Oleo's did you use for your sprung undercarriage?

Many thanks.

Geoff...

cymaz04/07/2020 16:58:23
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9279 forum posts
1200 photos

The OD on my Oleos are15mm. I found its more important to get the compression rate and spring size correct. I used trail and error using various size springs and combinations.

Ive used Flexo Springs in Bristol on a few occasions, just had what I wanted. It was £6 p & p a while back

Edited By cymaz on 04/07/2020 17:01:05

Nick Somerville04/07/2020 17:48:56
109 forum posts
68 photos

I used 169mm HKing alloys struts 60-120class. A little long but at least they were in stock (took a loong time to come). A little long but easy to cut a bit off the tops. I dismantled them and put a short length of hardwood into the oleos to shorten the travel a little but firm up the compression. Probably be better with slightly stiffer springs tbh but can’t be bothered to search for an alternative. Kudos to Cymas for his work in finding the best springs.

I chopped out the axles with part of the legs supplied in the kit and used those as the angle was already set. The bottom of the oleos was drilled larger and at an angle to accommodate them. Unfortunately the axle stubs were then too short and although I cobbled a solution which worked for a while I have since made up new parts that are much better.

Edited By Nick Somerville on 04/07/2020 17:50:07

funflyerColin05/07/2020 23:27:43
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94 forum posts
97 photos

Hello everyone hope you are all staying safe and well, just thought i would share this link to e-bay of a precedent stampe for sale if anyone i interested fitted with a YS 140 4st.

https://www.ebay.co.uk/itm/Precedent-Stampe-Biplane-SV4B-with-YS-140-4-Stroke/114280799430?hash=item1a9baa9cc6:g:ZXAAAOSwimRe66nI

hope i have done it right.

regards Colin

Adrian Hazeldine06/07/2020 19:41:09
23 forum posts
1 photos

Thanks to everyone who's been helping with sharing info on engine installs for the Stampe that I'm refurbing. After a close flirtation with the idea of an OS GF40 (thanks to Alan Gorham for all the info there) I've decided to go with a Laser 180 - ordered today from Jon.

Jon - would you mind please posting me a link to your photos of engine baffling etc. and also to the revised u/c you've installed.

Martin U06/07/2020 20:14:17
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99 forum posts
49 photos

Nice choice Adrian, I have 2 lasers and they are a delight. Saito 180 in my Stampe which is similar regarding reliability and sound. Enjoy

Jon - Laser Engines06/07/2020 21:39:33
5556 forum posts
270 photos

img_20150406_163035.jpg

img_20150327_173158.jpg

I need to take a photo of my baffles. Apparently i dont have one!

Geoff Gardiner06/07/2020 22:07:26
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544 forum posts
917 photos

Are they the same Oleos that Nick used - 169mm HobbyKing jobbies?

Adrian Hazeldine06/07/2020 22:12:37
23 forum posts
1 photos

Jon - thanks for the pictures. U/C looks good and much easier to maintain!

Jon - Laser Engines06/07/2020 22:21:00
5556 forum posts
270 photos
Posted by Geoff Gardiner on 06/07/2020 22:07:26:

Are they the same Oleos that Nick used - 169mm HobbyKing jobbies?

errr...they are silver..

I have a spare set somewhere, i will dig them out and try and find some more useful information

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