I am laying out a backyard gutter runoff and drain design system.
The system will incorporate two elements:
(1) Solid Pipe Runoff collection and diversion system
(2) French Drain style collection system, possibly to tie into the runoff collection.
YouTube has a number of great examples which I am using to spec my design.
Home Depot BOM:
Qty 1 @ $76.96 = $76.96 #04510100 Advanced Drainage Systems 4" x 100 ft. Corex Solid Drain Pipe. Used for roof drain spouts to convey water far away from foundation
Qty 2 @ $ 2.82 = $ 5.64 #0432AA 4" Plug HDPE
Qty 4 @ $ 6.28 = $25.12 #4P08 4" PVC 45 Degree Hub Wye (For Cleanout at Gutter Vertical)
Qty 4 @ $ 2.57 = $10.28 #904 NDS 2 in. x 3 in. x 4 in. Styrene Offset Downspout Adapter
Qty 3 @ $ 8.93 = $26.79 #0422AA 4" HDPE Snap Wye Coupling
Amazon BOM:
Qty 1 @ $ 6.48 = $6.48 Christy's 02-4122 2-Inch Wide by 100-Feet Long 10ml Thick Tape
Qty 1 @ $127.29 Mutual NW35 Non Woven Geotextile Polypropylene Fabric 300' Length x 6' Width
[For Foundation / French Drain Style Application]
Design Inputs and other factors:
Roof Area: 1200 sqf (estimated)
800-1000 Gallons of runoff per 1" of rain to be diverted to sloped front yard (sloped towards street)
Soil composition: Heavy Clay
Footer facing inwards
Crawlspace
Poor previous drainage noted by water in the crawlspace
https://theconstructor.org/geotechnical/foundations/foundation-drain/28069/
https://www.bobvila.com/articles/french-drains/
Sunday, January 19, 2020
Sunday, October 27, 2019
944/924s Hatch and Fan Relay
I have fixed a problem with the hatch opener and the interior fan not functioning by re-seating the relay in it's place on the fuse panel under the dash. Now however, the same problem has occurred again. The hatch can still open by key, and the interior fan is not mission-critical, so I am considering a brand new relay or pulling it to disassemble and check the contacts and spring function. After 30+ years it's probably time for a new relay.
[Dec 2019 Update] After seating a second time and replacing a worn radiator hose, the system while running hot in stop and go traffic, is remaining cool during highway driving.
[Dec 2019 Update] After seating a second time and replacing a worn radiator hose, the system while running hot in stop and go traffic, is remaining cool during highway driving.
Monday, September 30, 2019
Dyneema Rigging Pictures
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Side Stay (1/4" Brummel Splice & Thimbled both ends) with 7/64 Dyneema Lashing (3-4 turns sufficient, clove hitched)
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| Grey colored Forestay (1/4"), Green Tangs (2 x 1/4" to furler) and sidestays (1/4") |
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| Lash to adjust tension. Stays straight. |
Monday, September 16, 2019
Amsteel Dyneema Stretch
[Tags: Jasmine, Hobie 20, Rigging, Dyneema]
We tried the lashing method with 1/4" Samson Amsteel Dyneema yesterday and the stretch amount was in excess of 1 foot for a 22 foot length. This is on par with the 6.67% Stretch that they show in the Samson application instructions for a 30 foot line at 2 feet of stretch. All in all, that stretch length must be factored into the line length and lashing plan. If not, you will end up with a dramatically under-tensioned rig.
On my second iteration of line length calculation, I undersized the shroud by around 1 foot, but Samson's notes would indicate that the amount should be 1.5 feet (per 22 feet) minimum. There are multiple sources of line elongation including:
-> Constructional Elogation (fibers setting into a tighter bundle)
-> Splice Elongation (strands settings into each splice - 2 in my case, one at each thimbled end)
-> Elastic Elongation (recoverable stretch in the line. recovered when load removed - small for HMPE/Dyneema)
Elongation will increase as loading increases regardless of the line construction.
Shock loading (pulsing of a load) will increase the elongation amount.
Hobie Wire Lengths (Subtract 18 inches from these figure to allow for stretch and lashing setup)
https://static.hobiecat.com/2010_archive/support/pdfs/WireGuide.pdf
Stainless Fitting Distributors
We tried the lashing method with 1/4" Samson Amsteel Dyneema yesterday and the stretch amount was in excess of 1 foot for a 22 foot length. This is on par with the 6.67% Stretch that they show in the Samson application instructions for a 30 foot line at 2 feet of stretch. All in all, that stretch length must be factored into the line length and lashing plan. If not, you will end up with a dramatically under-tensioned rig.
On my second iteration of line length calculation, I undersized the shroud by around 1 foot, but Samson's notes would indicate that the amount should be 1.5 feet (per 22 feet) minimum. There are multiple sources of line elongation including:
-> Constructional Elogation (fibers setting into a tighter bundle)
-> Splice Elongation (strands settings into each splice - 2 in my case, one at each thimbled end)
-> Elastic Elongation (recoverable stretch in the line. recovered when load removed - small for HMPE/Dyneema)
Elongation will increase as loading increases regardless of the line construction.
Shock loading (pulsing of a load) will increase the elongation amount.
Hobie Wire Lengths (Subtract 18 inches from these figure to allow for stretch and lashing setup)
https://static.hobiecat.com/2010_archive/support/pdfs/WireGuide.pdf
Stainless Fitting Distributors
Berkley Point
Unicorn Stainless
Christine Joy
Suncor Stainless Inc.
70 Armstrong Road
Plymouth, MA 02360
(800) 541-6829
(508) 732-1013
(508) 732-9798 Fax
Friday, August 16, 2019
Porsche 924s Water-pump, Rack, Front Wheel Bearings, Engine Mounts
After I lost the Waterpump earlier this year, I took the opportunity to work on some other pending issues with "Big Red", my 1987 924S.
Water Pump purchased through Amazon - Uro model. Many bolts sheared. Used Helicoil inserts and one bolt had to be re tapped at M8 -- a massive size for such an application. Other 10 bolts remain M6, and I removed all studs.
Rack requested through South Carolina-based Rack Dr.
Testing the rack now. (Not the easiest outfit to work with) System is still moaning/groaning, but there is no fluid loss that I can identify. (reservoir remains full)
Update 10/2019: Rack appears to be functioning correctly, although the alignment of the splined turn gear seems to be off in a way that prevents the original bolt (M8) from fitting. I substituted a M6 to get clearance to install and have kept my original rack (not the moaning culprit as it turns out) if I need to in the future.
Alignment performed after installing the rack
Engine mounts from Uro installed (Amazon or Pelican)
Control arm ball joints replaced. (Pelican)
Tie rod ends replaced. (Pelican)
Fuel Jumper line replaced (Pelican) - alleviated fuel smell for now
New Sway Bar Bushings (Pelican)
At this time, the Power steering pump is being suspected as the moaning/groaning source as I've replaced every other component in the system including new lines (with exception of the fluid cooler) and a rebuilt rack. Additionally, following my alignment, I need to tighten the tie rod end nuts as those were reported loose. (now done, but still hearing a popping sound when turning under load)
Information Sources Used:
(1) Clark's Garage (Great man with a huge contribution to 944 owners everywhere. Rest in Peace Clark)
(2) Front Wheel Bearings (Floating Frame Calipers)
https://www.youtube.com/watch?v=apBUNIl4HNw&t=425s
Update: Clunking Noise when steering
10/4/19 Update: I've noticed a clunking sound after installing the new front suspension. The root cause appears to be the suspension ball bearing which I regreased and light sanded some galling on the inner race which abuts the strut shoulder. Seems to have fixed the issue in my trials. Pelican/Porsche wants $107 per side new for these rubber with bearing assemblies -- better to make the old ones last.
Getting alignment done was a $200 exercise because they figured out that it was a Porsche -- I don't think that they even touched the camber for that price.
Update: Clunking Solved by grease-packing front strut bearing.
10/12/19 Update: The clunking was fixed by removing the left strut and repacking it's bearing with grease.
Water Pump purchased through Amazon - Uro model. Many bolts sheared. Used Helicoil inserts and one bolt had to be re tapped at M8 -- a massive size for such an application. Other 10 bolts remain M6, and I removed all studs.
Rack requested through South Carolina-based Rack Dr.
Testing the rack now. (Not the easiest outfit to work with) System is still moaning/groaning, but there is no fluid loss that I can identify. (reservoir remains full)
Update 10/2019: Rack appears to be functioning correctly, although the alignment of the splined turn gear seems to be off in a way that prevents the original bolt (M8) from fitting. I substituted a M6 to get clearance to install and have kept my original rack (not the moaning culprit as it turns out) if I need to in the future.
Alignment performed after installing the rack
Engine mounts from Uro installed (Amazon or Pelican)
Control arm ball joints replaced. (Pelican)
Tie rod ends replaced. (Pelican)
Fuel Jumper line replaced (Pelican) - alleviated fuel smell for now
New Sway Bar Bushings (Pelican)
At this time, the Power steering pump is being suspected as the moaning/groaning source as I've replaced every other component in the system including new lines (with exception of the fluid cooler) and a rebuilt rack. Additionally, following my alignment, I need to tighten the tie rod end nuts as those were reported loose. (now done, but still hearing a popping sound when turning under load)
Information Sources Used:
(1) Clark's Garage (Great man with a huge contribution to 944 owners everywhere. Rest in Peace Clark)
(2) Front Wheel Bearings (Floating Frame Calipers)
https://www.youtube.com/watch?v=apBUNIl4HNw&t=425s
Update: Clunking Noise when steering
10/4/19 Update: I've noticed a clunking sound after installing the new front suspension. The root cause appears to be the suspension ball bearing which I regreased and light sanded some galling on the inner race which abuts the strut shoulder. Seems to have fixed the issue in my trials. Pelican/Porsche wants $107 per side new for these rubber with bearing assemblies -- better to make the old ones last.
Getting alignment done was a $200 exercise because they figured out that it was a Porsche -- I don't think that they even touched the camber for that price.
Update: Clunking Solved by grease-packing front strut bearing.
10/12/19 Update: The clunking was fixed by removing the left strut and repacking it's bearing with grease.
Tuesday, July 30, 2019
1st Oshkosh
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| One of the many fly-overs |
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| Icon Aircraft is based in Vacaville CA, and assembles there. Many Components built in Tijuana, Mexico |
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| Attention to detail |
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| Long-Easy resting nose down to avoid tipping backwards due to wind |
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| F35 aside a B-17 |
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| A plane if designed by Salvador Dali |
Thursday, July 4, 2019
1/4" Dyneema Amsteel 12 Strand Eye Splice for Standing Rigging (Hobie 20)
[See Article on this Blog Titled" "Amsteel Dyneema Stretch"]
12 Strand Amsteel/Dyneema Eye Splice
https://www.youtube.com/watch?v=EjR4E_91txk
Brummel Splice
http://atlanticbraids.com/dyneema-brummel-eye-splice-1-end/
https://www.youtube.com/watch?v=d0B6tYTVHVM
2nd End
https://www.youtube.com/watch?v=fIR5JdQ7TEo
https://www.youtube.com/watch?v=IxSi8igfChk
https://www.youtube.com/watch?v=4WW7Qvg3VjI
Hobie Side Shroud Length: 23' 5 & 1/4" [7.14375m]
Additional Length Required for Splice: 1.5ft
Total Length required for 2 Eye Splices: 26.5 ft approximately.
Shrouds / Stay Length
https://static.hobiecat.com/2010_archive/support/pdfs/WireGuide.pdf
My measurements in meters / mm:
Side: 7.135m (7135mm) -> Shorter better to allow stretch and adjustment -- 6.8m
Fore: 6.335m (6335mm) -> Now measuring about 6m to have adequate tension
https://smallboatsmonthly.com/article/synthetic-fiber-rigging/
https://www.apsltd.com/aps-advisor/types-of-eye-splices-for-braided-line/
https://www.youtube.com/watch?v=_r-6pjTE3Qc
7/29/19 Update:
I've installed the stays and they were not exactly the same length, but close enough (a few inches) so that they could be adjusted by the side-hole adjuster. Next, I'm going to work on the forestay replacement as dyneema is much easier to work with.
9/16/19 Update:
Amsteel stretches 1 to 1.5 feet per 22 feet of 1/4" line.This must be taken into account when determining line lengths, and lashing adjustability shoudl be built-into the design for tensionning. I lash with 7/64 amsteel, use 1/4" Stainless thimbles (316) and take 4 lashes around for an expected strength of 4* 1600 lbs = 6400 lbs (2909 kgf).
10/4/19 Update:
See this article about how the rigging looks: http://porsche924s1987.blogspot.com/2019/09/dyneema-rigging-pictures.html
12 Strand Amsteel/Dyneema Eye Splice
https://www.youtube.com/watch?v=EjR4E_91txk
Brummel Splice
http://atlanticbraids.com/dyneema-brummel-eye-splice-1-end/
https://www.youtube.com/watch?v=d0B6tYTVHVM
2nd End
https://www.youtube.com/watch?v=fIR5JdQ7TEo
https://www.youtube.com/watch?v=IxSi8igfChk
https://www.youtube.com/watch?v=4WW7Qvg3VjI
Hobie Side Shroud Length: 23' 5 & 1/4" [7.14375m]
Additional Length Required for Splice: 1.5ft
Total Length required for 2 Eye Splices: 26.5 ft approximately.
Shrouds / Stay Length
https://static.hobiecat.com/2010_archive/support/pdfs/WireGuide.pdf
My measurements in meters / mm:
Side: 7.135m (7135mm) -> Shorter better to allow stretch and adjustment -- 6.8m
Fore: 6.335m (6335mm) -> Now measuring about 6m to have adequate tension
https://smallboatsmonthly.com/article/synthetic-fiber-rigging/
https://www.apsltd.com/aps-advisor/types-of-eye-splices-for-braided-line/
https://www.youtube.com/watch?v=_r-6pjTE3Qc
7/29/19 Update:
I've installed the stays and they were not exactly the same length, but close enough (a few inches) so that they could be adjusted by the side-hole adjuster. Next, I'm going to work on the forestay replacement as dyneema is much easier to work with.
9/16/19 Update:
Amsteel stretches 1 to 1.5 feet per 22 feet of 1/4" line.This must be taken into account when determining line lengths, and lashing adjustability shoudl be built-into the design for tensionning. I lash with 7/64 amsteel, use 1/4" Stainless thimbles (316) and take 4 lashes around for an expected strength of 4* 1600 lbs = 6400 lbs (2909 kgf).
10/4/19 Update:
See this article about how the rigging looks: http://porsche924s1987.blogspot.com/2019/09/dyneema-rigging-pictures.html
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