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Forum: Kit Building
12-07-2019, 10:14 AM
Replies: 554
Views: 25,007
Posted By EF

My thought exactly, see my earlier comment,...

My thought exactly, see my earlier comment, continuing it under the unit would have provided a superior anchoring point for it.
Forum: Kit Building
12-06-2019, 10:19 PM
Replies: 554
Views: 25,007
Posted By EF

I would carry the aluminum angle right up to the...

I would carry the aluminum angle right up to the front edge of the plywood rail (sandwiched between the plywood rail and mounting block and gear unit), otherwise youíll have a stress concentration...
Forum: Gas Engines
11-25-2019, 08:58 AM
Replies: 4
Views: 225
Posted By EF

Thanks for your detailed and informative answer. ...

Thanks for your detailed and informative answer.
I guess itís not quite a quality engine...
Forum: Gas Engines
11-25-2019, 05:20 AM
Replies: 4
Views: 225
Posted By EF

Bearings are new, engine is new, itís as if the...

Bearings are new, engine is new, itís as if the shaft is slightly bent from the factory.

Maybe I should have written Ďcrooked shaftí...
Forum: Gas Engines
11-25-2019, 02:40 AM
Replies: 4
Views: 225
Posted By EF

Prop shaft wobble

I have a 26cc ďZenoah copyĒ - a QJ engine brand new never run.

I noticed after installing it on a test bench and securing the prop, that when I turn it the front end of the prop shaft seems to...
Forum: Kit Building
11-11-2019, 09:47 PM
Replies: 13
Views: 560
Posted By EF

V Bracing

Looks good to me.
I wouldnít worry about the servo bay, as you did it, the bracing already stiffens the structure (I didnít add the bracing since I didnít overpower, with the .30FS).
Forum: Kit Building
11-06-2019, 08:41 AM
Replies: 13
Views: 560
Posted By EF

Concerning the struts - indeed skip the...

Concerning the struts - indeed skip the streamlined Ali. tubes idea and use hardwood.
This is more practical for a FLYING model.

A few more comments re the struts, you might want to consider:
1)...
Forum: Kit Building
11-05-2019, 08:07 AM
Replies: 13
Views: 560
Posted By EF

If you are planning to use a Super Cub cowl, I...

If you are planning to use a Super Cub cowl, I would have thought a side-mounted engine would be the more natural configuration?
This cowl with an inverted installation could require extensive cowl...
Forum: Kit Building
11-04-2019, 12:09 PM
Replies: 13
Views: 560
Posted By EF

Thanks :) Itís from Miter Master, bought...

Thanks :)

Itís from Miter Master, bought some 25 years ago.
Very simple and effective device, used extensively in every build.

BTW, a Cub does not need oomph... it has an enormous wing with a...
Forum: Kit Building
11-04-2019, 09:57 AM
Replies: 13
Views: 560
Posted By EF

Are you fixed on the .56 size engine? ...

Are you fixed on the .56 size engine?


Checkout mine here:

http://www.rcuniverse.com/forum/kit-building-121/11638592-not-yellow-j-3-cub-sig-71%94-span-kit.html

I used an O.S. 30FS and the...
Forum: ARF or RTF
11-01-2019, 09:02 PM
Replies: 1
Views: 209
Posted By EF

Esm skyraider

Successful maiden flight of my ESM Skyraider today :)

Assembled from the kit but with extensive mods to the control linkages.
I bought it s/h NIB and was also given the air retracts for it but I...
Forum: Kit Building
10-18-2019, 06:35 AM
Replies: 554
Views: 25,007
Posted By EF

At the risk of getting too off topic here... ...

At the risk of getting too off topic here...
About 4 USD for a 36Ē length but an additional 50% for the 48Ē plus you need to buy at least 10 sheets because the LHS cuts it to order. I always splice...
Forum: Kit Building
10-18-2019, 05:42 AM
Replies: 554
Views: 25,007
Posted By EF

Well, if weíre comparing costs of ply... my LHS...

Well, if weíre comparing costs of ply... my LHS is only a 10 minute drive for me and sells a 48Ē square of 1/64Ē for about 130 US, but this is useless information for most of you guys since you are...
Forum: Kit Building
10-17-2019, 05:43 AM
Replies: 554
Views: 25,007
Posted By EF

Yes, it doesnít come cheap, but then you donít...

Yes, it doesnít come cheap, but then you donít really need too much for such applications.
I first came across this technique while scratch building scale models designed by the British scale...
Forum: Kit Building
10-17-2019, 02:29 AM
Replies: 554
Views: 25,007
Posted By EF

Actually, the 1/64Ē wasnít a typo, thatís 0.4 mm...

Actually, the 1/64Ē wasnít a typo, thatís 0.4 mm thick.
My LHS stocks it, and itís all you need for a crisp end.
The f/g covering should suffice though.
Forum: Kit Building
10-17-2019, 01:11 AM
Replies: 554
Views: 25,007
Posted By EF

You might want to consider capping the wing...

You might want to consider capping the wing cutout and surface edges with 1/64 ply.
I do it on most of my builds because it gives a super sharp edge that stands up to wear and tear over the years.
09-18-2019, 10:59 PM
Replies: 711
Views: 49,328
Posted By EF

Fleet Finch

https://cimg9.ibsrv.net/gimg/www.rcuniverse.com-vbulletin/800x450/cf9e8e1f_3a01_416c_8f62_844edf086417_6cb0a83209b3b8cf0d79d0529811ca44149f0733.jpeg...
Forum: Kit Building
09-16-2019, 03:26 AM
Replies: 554
Views: 25,007
Posted By EF

The shrink over the servo-extension connection is...

The shrink over the servo-extension connection is obviously a good thing, but why do you bother with this connection instead of simply cutting off the plug and receptacle, and making a soldered...
Forum: Kit Building
09-07-2019, 05:32 AM
Replies: 3,562
Views: 226,324
Posted By EF

https://cimg6.ibsrv.net/gimg/www.rcuniverse.com-vb...

https://cimg6.ibsrv.net/gimg/www.rcuniverse.com-vbulletin/750x1020/20e86521_fac3_463f_ad90_039e2641bc3c_15ba5f925a71135ba7c56f62c84027a3bfadfbd0.jpeg
Thanks, I have been building and flying rc...
Forum: Kit Building
09-07-2019, 01:43 AM
Replies: 3,562
Views: 226,324
Posted By EF

Hereís my Kadet Senior, built from the kit, but I...

Hereís my Kadet Senior, built from the kit, but I modified it to use wing bolts instead of the rubber bands.

Maiden flight was yesterday.
...
Forum: Kit Building
10-11-2018, 11:23 AM
Replies: 8
Views: 361
Posted By EF

Thanks for the informative replies! I havenít...

Thanks for the informative replies!
I havenít bought an engine yet so will get something more suitable than the Zenoah.

How about the DLE 40 twin?
Forum: Kit Building
10-05-2018, 06:08 AM
Replies: 8
Views: 361
Posted By EF

Isnít a 70-75cc twin cylinder engine roughly...

Isnít a 70-75cc twin cylinder engine roughly equivalent to a 50cc single cylinder engine power-wise?
Forum: Kit Building
10-03-2018, 01:15 AM
Replies: 8
Views: 361
Posted By EF

Sig 1/3 scale Spacewalker & Zenoah engine question

Would an older Zenoah 74cc twin cylinder engine be considered too large for this airframe?
Iím an experienced Rc flyer but havenít used gas engines before, hence I cannot really assess the level of...
Forum: Gas Engines
06-29-2018, 04:18 AM
Replies: 0
Views: 225
Posted By EF

Question: coil mounting on QJ 26 CC engine

I have been building and flying RC planes over 40 years but this is my first venture into gas engines.

I apologize if my question seems basic or over-thinking an issue, but here goes:

I got a...
Forum: Gas Engines
06-20-2018, 07:21 AM
Replies: 8
Views: 589
Posted By EF

Thank You, thatís what I was looking for.

Thank You, thatís what I was looking for.
Showing results 1 to 25 of 393
 


 
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