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#71
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Refinishing Ventus b Fuselage
On Friday, November 2, 2018 at 3:25:43 PM UTC-7, Richard Pfiffner wrote:
On Friday, November 2, 2018 at 7:59:12 AM UTC-7, Dan Marotta wrote: It appears that your fuselage stand does not have any sort of rollers or bearings to make spinning the fuselage easy.Â* How do you do it?Â* Do you have an assistant lift the nose while you rotate at the ring? Curious... On 11/1/2018 6:48 PM, Richard Pfiffner wrote: On Saturday, October 27, 2018 at 4:35:37 PM UTC-7, Richard Pfiffner wrote: On Friday, October 26, 2018 at 8:36:12 AM UTC-7, Charlie M. (UH & 002 owner/pilot) wrote: "Bam....be.......". Yes, I have hit a deer at about 50MPH, amazing the damage that can be done. :-( Last 2 coats of Vinyl ester primer sand with 180g next. The reason for so many coats of fairing primer and primer is to sand to make sure the surface is flat with no flaws. If you don't do this the finish with not be good and all the defects will show at the finish coat. Next sanding with P180. http://www.craggyaero.com/ventus.htm Richard Richard www.craggyaero.com Last coat of JP202 Primer, tomorrow sand with P320, then top coat with JAU Acrylic Urethane. http://www.craggyaero.com/ventus.htm Richard www.craggyaero.com -- Dan, 5J Two wheels in the bottom stand ring rolls on them. It is white again 3 coats JAU Acrylic Urethane. http://www.craggyaero.com/ventus.htm Richard www.craggyaero.com |
#72
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Refinishing Ventus b Fuselage
Last 2 coats of Vinyl ester primer sand with 180g next. The
reason for so many coats of fairing primer and primer is to sand to make sure the surface is flat with no flaws. If you don't do this the finish with not be good and all the defects will show at the finish coat. Next sanding with P180. http://www.craggyaero.com/ventus.htm Richard Richard www.craggyaero.com Last coat of JP202 Primer, tomorrow sand with P320, then top coat with JAU Acrylic I’m not saying the JP202 will be a problem but my experience of a similar high build primer was that it suffered significant blistering when only about 5 years old. It’s not really a problem for the auto boys because who keeps a car that long? The issue is the filling medium used in the primer;- Talc or chalk are bad;- water enters the plastic due to fick’s diffusion where it mixes with the chalk = carbolic acid which neutralises by drawing in more water + generating pressure (osmosis) which pushes up a blister. As a result of this I currently would fill surface with chemically inert filled (alumina/kaolin) epoxy or polyester, untill defect free and then use a standard white 2 part primer. Fraser |
#73
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Refinishing Ventus b Fuselage
On Sunday, November 4, 2018 at 12:00:05 AM UTC-7, Fraser Wilson wrote:
Last 2 coats of Vinyl ester primer sand with 180g next. The reason for so many coats of fairing primer and primer is to sand to make sure the surface is flat with no flaws. If you don't do this the finish with not be good and all the defects will show at the finish coat. Next sanding with P180. http://www.craggyaero.com/ventus.htm Richard Richard www.craggyaero.com Last coat of JP202 Primer, tomorrow sand with P320, then top coat with JAU Acrylic I’m not saying the JP202 will be a problem but my experience of a similar high build primer was that it suffered significant blistering when only about 5 years old. It’s not really a problem for the auto boys because who keeps a car that long? The issue is the filling medium used in the primer;- Talc or chalk are bad;- water enters the plastic due to fick’s diffusion where it mixes with the chalk = carbolic acid which neutralises by drawing in more water + generating pressure (osmosis) which pushes up a blister. As a result of this I currently would fill surface with chemically inert filled (alumina/kaolin) epoxy or polyester, untill defect free and then use a standard white 2 part primer. Fraser Fraser, The last time I used this process was 17 years ago on my ventus wings. Since then the glider has been tied out in the sun and weather every summer April thru October. The wings except for some chips and dings are still in excellent shape. Richard www.craggyaero.com |
#74
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Refinishing Ventus b Fuselage
I’m not saying the JP202 will be a problem but my experience of a similar high build primer was that it suffered significant blistering when only about 5 years old. It’s not really a problem for the auto boys because who keeps a car that long? The issue is the filling medium used in the primer;- Talc or chalk are bad;- water enters the plastic due to fick’s diffusion where it mixes with the chalk = carbolic acid which neutralises by drawing in more water + generating pressure (osmosis) which pushes up a blister. As a result of this I currently would fill surface with chemically inert filled (alumina/kaolin) epoxy or polyester, untill defect free and then use a standard white 2 part primer. Fraser So what chemically inert primer would YOU use? |
#75
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Refinishing Ventus b Fuselage
Richard,
How did you determine to use the aft wing locating pin bearings for mounting on your rotisserie? I'm just at that stage in building one for my Ventus. |
#76
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Refinishing Ventus b Fuselage
On Saturday, November 10, 2018 at 11:45:51 PM UTC-8, Robert Seccombe wrote:
Richard, How did you determine to use the aft wing locating pin bearings for mounting on your rotisserie? I'm just at that stage in building one for my Ventus. It was narrower than the front and it make the tail lighter. You do have to adjust the tail height to rotate the fuselage. A rope to the ceiling makes this easier. Richard www.craggyaero.com |
#77
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Refinishing Ventus b Fuselage
On Friday, October 12, 2018 at 9:16:35 PM UTC-4, Richard Pfiffner wrote:
Pictures and process for refinishing a ventus b fuselage. Work in progress pictures and process as work is completed. http://www.craggyaero.com/ventus.htm Richard www.craggyaero.com Nice work, looks like you are well prepared. |
#78
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Refinishing Ventus b Fuselage
Ain’t that the truth Mark M, just finished sanding and buffing my DG200-17C all over, about 50 hours to get the original Schaballac gelcoat back to looking new,
not bad for a glider made in 1980 to still have original gel in perfect condition. |
#79
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Refinishing Ventus b Fuselage
On Saturday, December 1, 2018 at 1:57:51 PM UTC-8, Charlie Quebec wrote:
Ain’t that the truth Mark M, just finished sanding and buffing my DG200-17C all over, about 50 hours to get the original Schaballac gelcoat back to looking new, not bad for a glider made in 1980 to still have original gel in perfect condition. All the work and you have drip. What to do? http://www.craggyaero.com/ventus.htm Richard www.craggyaero.com |
#80
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Refinishing Ventus b Fuselage
On Saturday, December 1, 2018 at 4:14:07 PM UTC-8, Richard Pfiffner wrote:
On Saturday, December 1, 2018 at 1:57:51 PM UTC-8, Charlie Quebec wrote: Ain’t that the truth Mark M, just finished sanding and buffing my DG200-17C all over, about 50 hours to get the original Schaballac gelcoat back to looking new, not bad for a glider made in 1980 to still have original gel in perfect condition. All the work and you have drip. What to do? http://www.craggyaero.com/ventus.htm Richard www.craggyaero.com Stop painting and deal with installing an ADS-B Out system. The change will make sanding seem pleasurable. :-) |
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