Wet sumping article
#21
Hell we used to watch them have the same issue on the miles in the 70s , It's not a oil pump issue or a M8 issue . It's a case design issue and Indian has the same issue.That's why Indian had a pure
race motor built. On the drag racing side Vance & Hines found every flaw and shared it with HD. You want HP call a drag racing engine builder they squeeze every once out. Indian put Harley in a cubic inch war and they never wanted to go down that path. Remember in racing you tear that motor down every Monday so Longevity isn't a concern.
race motor built. On the drag racing side Vance & Hines found every flaw and shared it with HD. You want HP call a drag racing engine builder they squeeze every once out. Indian put Harley in a cubic inch war and they never wanted to go down that path. Remember in racing you tear that motor down every Monday so Longevity isn't a concern.
That might all be true except for the fact that you CAN have way more performance and still have a quality, reliable build. Aftermarket guys have been taking stock harleys, and with anything from just a cam exhaust upgrade to a full blown big bore kit, and getting tons more out of them.
It all boils down to cost vs QA guidelines. They get by with the cheapest parts they can, and in their limited testing, they stay within acceptable params and call it all good. Then when real world testing takes place: i.e millions of riders, then issues start showing up on those cheap parts they thought were going to ok.
I saw that for YEARS in the furniture industry. Lets get our wood or fabrics/leather from a cheaper source to cut costs. Then a couple years down the road, and products are being returned for broken legs..
#22
The funny thing about (most) engineers is that they think the design they just created, which is based entirely on theory and in computers or on paper, will be 100% the same in practice and in action.
This is rarely the case, and as the design increases in complexity, as does the percent chance the product will not follow the design in action.
BTW, not sure a lot of y'all read Cycleworld but he's kind of an icon when it comes to technical writing in the motorcycle world.
This is rarely the case, and as the design increases in complexity, as does the percent chance the product will not follow the design in action.
BTW, not sure a lot of y'all read Cycleworld but he's kind of an icon when it comes to technical writing in the motorcycle world.
#23
IF I understand what you're getting at.......
That might all be true except for the fact that you CAN have way more performance and still have a quality, reliable build. Aftermarket guys have been taking stock harleys, and with anything from just a cam exhaust upgrade to a full blown big bore kit, and getting tons more out of them.
It all boils down to cost vs QA guidelines. They get by with the cheapest parts they can, and in their limited testing, they stay within acceptable params and call it all good. Then when real world testing takes place: i.e millions of riders, then issues start showing up on those cheap parts they thought were going to ok.
I saw that for YEARS in the furniture industry. Lets get our wood or fabrics/leather from a cheaper source to cut costs. Then a couple years down the road, and products are being returned for broken legs..
That might all be true except for the fact that you CAN have way more performance and still have a quality, reliable build. Aftermarket guys have been taking stock harleys, and with anything from just a cam exhaust upgrade to a full blown big bore kit, and getting tons more out of them.
It all boils down to cost vs QA guidelines. They get by with the cheapest parts they can, and in their limited testing, they stay within acceptable params and call it all good. Then when real world testing takes place: i.e millions of riders, then issues start showing up on those cheap parts they thought were going to ok.
I saw that for YEARS in the furniture industry. Lets get our wood or fabrics/leather from a cheaper source to cut costs. Then a couple years down the road, and products are being returned for broken legs..
Last edited by mjwebb; 05-22-2018 at 09:21 AM.
#24
IF I understand what you're getting at.......
That might all be true except for the fact that you CAN have way more performance and still have a quality, reliable build. Aftermarket guys have been taking stock harleys, and with anything from just a cam exhaust upgrade to a full blown big bore kit, and getting tons more out of them.
It all boils down to cost vs QA guidelines. They get by with the cheapest parts they can, and in their limited testing, they stay within acceptable params and call it all good. Then when real world testing takes place: i.e millions of riders, then issues start showing up on those cheap parts they thought were going to ok.
I saw that for YEARS in the furniture industry. Lets get our wood or fabrics/leather from a cheaper source to cut costs. Then a couple years down the road, and products are being returned for broken legs..
That might all be true except for the fact that you CAN have way more performance and still have a quality, reliable build. Aftermarket guys have been taking stock harleys, and with anything from just a cam exhaust upgrade to a full blown big bore kit, and getting tons more out of them.
It all boils down to cost vs QA guidelines. They get by with the cheapest parts they can, and in their limited testing, they stay within acceptable params and call it all good. Then when real world testing takes place: i.e millions of riders, then issues start showing up on those cheap parts they thought were going to ok.
I saw that for YEARS in the furniture industry. Lets get our wood or fabrics/leather from a cheaper source to cut costs. Then a couple years down the road, and products are being returned for broken legs..
#25
I deal with this very issue every working day and from past experience I'll tell you it's about a 40/60 split with the 40% being what transfers from paper to the real world seamlessly. The 60% side ranges from minor tweaks to a complete redesign to make it work. Throw in a major new product release and tight timetable and a lot gets tossed to whims of lets run with it and deal with revisions later. It's a numbers game at the corporate level, as long as projected failure rates are below a certain threshold it's acceptable. We the end user take the beating.
#26
I feel like up til the 90's major corporations (for the most part) actually did have the consumers best interests in mind. Now, it's the shareholders best interests...
#28
#29
We know better tho...
#30
...I worked for 23yrs at an oil refinery. Was the same exact thing there. Us field operators would tell these college know-it-alls(green engineers)on what we needed or how something had to work, they'd go back to their office and spend two weeks designing something opposite of what we needed, have the machine shop, weld shop, general maintenance fab it up and it wouldn't work-THEN they would come and ask how it needed to be done when we told them in the first f'kin place how it needed to be done. And people wonder why gas is near and/or above $3 per gallon.
It's times like this I wish I had the extra money to throw at a crate engine (or scav one out a junkyard) just to see what issues crop up over time. Ah well.
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