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  #31  
Old 07-14-2014, 04:53 AM
dinowal dinowal is offline
 
Join Date: Dec 2011
Location: TWIN WATERS, Queensland, AUSTRALIA
Posts: 89
Default success, but..

Hi Ric & fellow builders , it wasn't quite that easy, but I did manage to get a draw string through eventually. Because the cross section of the roll bar is much larger than the control sticks, the speed of the airflow is slower (some may say not enough suck!) After many tries with string, I had success with very fine fishing line, with a piece of foam tied to the end, - the foam was compressed to get it through the little hole, then it expanded inside the rollbar & it was sucked through. It was also necessary to tape up all the other holes in the rollbar. This method may still be superior to trying to feed tiewire or thick fishing line through, as per Vans instructions.. Hope this helps those coming after, Cheers, DEAN...
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  #32  
Old 07-14-2014, 08:58 AM
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Phantom30 Phantom30 is offline
 
Join Date: Jul 2009
Location: Coeur d'Alene, ID/Casa Grande, AZ
Posts: 654
Default

Quote:
Originally Posted by dinowal View Post
Hi Ric & fellow builders , it wasn't quite that easy, but I did manage to get a draw string through eventually. Because the cross section of the roll bar is much larger than the control sticks, the speed of the airflow is slower (some may say not enough suck!) After many tries with string, I had success with very fine fishing line, with a piece of foam tied to the end, - the foam was compressed to get it through the little hole, then it expanded inside the rollbar & it was sucked through. It was also necessary to tape up all the other holes in the rollbar. This method may still be superior to trying to feed tiewire or thick fishing line through, as per Vans instructions.. Hope this helps those coming after, Cheers, DEAN...
Yup....you need a major "sucking vac". My wife bought me a $450.00 garage/shop vac for Xmas....it sucks
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307 (CAB) Phantom
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RV-12 Kit#729 "N312RD" is now a full functioning fun machine!! Thanks Van for fulfilling my dream😎
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  #33  
Old 07-14-2014, 11:11 AM
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engineerofsorts engineerofsorts is offline
 
Join Date: Mar 2009
Location: Austin, Texas
Posts: 306
Default Are you forgetting the tube?

Quote:
Originally Posted by dinowal View Post
Hi Ric & fellow builders , it wasn't quite that easy, but I did manage to get a draw string through eventually. Because the cross section of the roll bar is much larger than the control sticks, the speed of the airflow is slower (some may say not enough suck!) After many tries with string, I had success with very fine fishing line, with a piece of foam tied to the end, - the foam was compressed to get it through the little hole, then it expanded inside the rollbar & it was sucked through. It was also necessary to tape up all the other holes in the rollbar. This method may still be superior to trying to feed tiewire or thick fishing line through, as per Vans instructions.. Hope this helps those coming after, Cheers, DEAN...
It sorda sounds like you aren't feeding the new wire down the plastic tube that the lighting wires are fed through??? Just feeding it through the roll bar??? It looks like, from the contents of the kit, they might be assuming you don't have the canopy lighting installed, so a length of the plastic tube is included. I'm not to concerned that not running the wire through the plastic tube will ruin some vast eternal plan, but the plans do have you running the wire through the tube. For me, it took a few tries, but I was able to shove a length of safety wire through the tube and pull the new wire through. (a little boelube on the wires helped)
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Last edited by engineerofsorts : 07-14-2014 at 11:20 AM.
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  #34  
Old 07-14-2014, 04:05 PM
rgmwa rgmwa is offline
 
Join Date: Feb 2010
Location: Perth, Western Australia
Posts: 1,647
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I fed the white wire into the plastic tube first, and then pulled/pushed both tube and wire up into the roll bar using some plastic coated garden tie wire to do the pulling. The tie wire went down the roll bar through the hole in the top fairly easily. Lots of different ways of doing this.
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  #35  
Old 07-14-2014, 04:17 PM
dinowal dinowal is offline
 
Join Date: Dec 2011
Location: TWIN WATERS, Queensland, AUSTRALIA
Posts: 89
Default plastic tube

Hi Bob, yes you are right, I had not previously installed the tube & Cockpit light as I intend to operate strictly day VFR. However as I now have to get the wire up through the rollbar for the Canopy Safety Switch I decided to install the cockpit light anyway. Today's job will be to get the tube up there, then the wires through it. Good fun, as always! Cheers, DEAN...
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  #36  
Old 12-04-2014, 09:31 AM
ben barron ben barron is offline
 
Join Date: Sep 2013
Location: Fall City, WA
Posts: 138
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After painstakingly pulling the 2 canopy light wires to panel and looking for the connections - Vans just confirmed the WH-L435 (YEL/PRP) referenced on 31B-15 Step 8 the same as the WH-L80 (YEL/PRP) referenced on 40-12 step 18 and the WH-L436 (YEL/GRN) referenced on 31B-15 Step 8 the same as the WH-L82 (YEL/GRN) referenced on 40-12 step 19 so there was no need to fish them up to the panel they were sitting just under the rollbar. They will be updating page 40.
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  #37  
Old 10-16-2015, 04:15 AM
BlndRvtr BlndRvtr is offline
 
Join Date: Mar 2009
Location: NE Where
Posts: 339
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Quote:
Originally Posted by rvbuilder2002 View Post
A recent Kitplanes issue has a story of a first flight with an unlatched canopy
And what was the result of flight with an unlatched canopy? Any detrimental effects other than noise?
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  #38  
Old 10-16-2015, 09:18 AM
Mich48041 Mich48041 is offline
 
Join Date: Apr 2008
Location: Riley TWP MI
Posts: 3,070
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One hot day I took off with an unlatched canopy. My first reaction was to reach for the canopy handle. But then I remembered reading about a plane that crashed while the pilot was trying to close the canopy. So I let go of the handle and flew the plane. Other than being a little windy inside, the plane flew just fine. In fact, the plane might be a little more aerodynamic because the canopy settles in a position of least resistance, about 6" open. I climbed to a safe altitude, then raised the nose to slow the plane, and then managed to get the canopy partly latched so that it was not so windy inside. Then I landed and latched the canopy. The biggest detrimental affect was to my ego.
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  #39  
Old 10-18-2015, 06:04 PM
BlndRvtr BlndRvtr is offline
 
Join Date: Mar 2009
Location: NE Where
Posts: 339
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Thank you Joe. It's nice when others are willing to share their experiences for the educational benefit of their fellow pilots. As I gain more experience in the
-12 I'll reciprocate.

George
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  #40  
Old 10-18-2015, 07:17 PM
n74846 n74846 is offline
 
Join Date: Sep 2015
Location: Boca Raton, FL BCT
Posts: 133
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In regard to "the unacceptably high level of crashes that resulted from the pilot taking off with the canopy unlatched or not properly/fully latched.", what exactly are the aerodynamic effects of an unlatched RV-12 canopy? I assume there is negative pressure above the canopy which lifts it. However at a certain point I would expect the oncoming airstream to counteract that force.

Are there any studies or specific knowledge about the affect?
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