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Search found 321 matches

by j-c-c
Fri Jun 11, 2021 9:37 pm
Forum: Engine Tech
Topic: Why are these holes made in crankshafts?
Replies: 27
Views: 1404

Re: Why are these holes made in crankshafts?

Another way to look at it: In my admittedly oversimplified example a hollow shaft makes better use of the material compared to a solid shaft. Material at the center of solid isn't doing anything except adding weight. The solid material in the middle of a crankpin isn't doing much either except addi...
by j-c-c
Fri Jun 11, 2021 1:14 pm
Forum: Engine Tech
Topic: Why are these holes made in crankshafts?
Replies: 27
Views: 1404

Re: Why are these holes made in crankshafts?

I have yet to closely review the linked supporting argument for the holes. I suspect the final outcome will be, the lightening holes reduce the loading on the crank in many forms, and making for a better end solution. My original contention was primarily with the statement "that drilling pins and ma...
by j-c-c
Wed Jun 09, 2021 6:58 pm
Forum: Engine Tech
Topic: Why are these holes made in crankshafts?
Replies: 27
Views: 1404

Re: Why are these holes made in crankshafts?

Boring the rod and main journals significantly increases torsional strength. Care to explain? Taylor 492-493.JPG Taylor 494-495.JPG Taylor 496-497.JPG Taylor 498-499.JPG Taylor 500-501.JPG Taylor 502-503.JPG Taylor 504-505.JPG Whatever that is, I can't read/view it in that format. Can you summarize...
by j-c-c
Tue Jun 08, 2021 9:54 pm
Forum: Engine Tech
Topic: Why are these holes made in crankshafts?
Replies: 27
Views: 1404

Re: Why are these holes made in crankshafts?

Tuner wrote: Mon Jun 07, 2021 11:37 pm Boring the rod and main journals significantly increases torsional strength.
Care to explain?
by j-c-c
Thu Jun 03, 2021 8:07 pm
Forum: Engine Tech
Topic: What happened to Controlled Induction software?
Replies: 14
Views: 2227

Re: What happened to Controlled Induction software?

Just saw a "Performance Trends" engine build software getting ready to be released that might also be pertinent here: www.performancetrends.com Customer/Basic Info Dual OHC No Yes Date Time Additional Document 1 Additional Document 2 Additional Document 3 Rotating Assembly Pin Part # Pin Wall Thickn...
by j-c-c
Thu May 20, 2021 3:44 pm
Forum: Electric & Hybrid Vehicle ** NEW **
Topic: Future Non static battery placement
Replies: 2
Views: 117

Re: Future Non static battery placement

Yes it would have an effect, but my thinking much less, much more complicated, and would directly effect the drivers perception of turning, overhang,aero balance etc, and I suspect for the average driver, a potential driving hazard. Regarding no manufacturers not feeling its a worthwhile goal curren...
by j-c-c
Wed May 19, 2021 9:59 am
Forum: Electric & Hybrid Vehicle ** NEW **
Topic: Future Non static battery placement
Replies: 2
Views: 117

Future Non static battery placement

So not exactly in the vein of structural battery utilization, maybe heading the alternative direction? My thinking, here out loud, batteries are a large part of vehicle mass with electrics, beyond the motor itself. It seems it needs to be always considered the battery has a useful limited lifespan, ...
by j-c-c
Thu May 13, 2021 11:07 pm
Forum: Engine Tech
Topic: Road Race Track/AutoCross 351w
Replies: 55
Views: 2999

Re: Road Race Track/AutoCross 351w

So with reliability and on track mileage primary goals, that is a starting point 6500 rpm shift point motor? Autocrossing tries to emulate a road course in a very scaled down venue. Hence, you shift to your nominal gear before the first timing cone and leave it there for the whole run. At least tha...
by j-c-c
Mon May 10, 2021 11:33 pm
Forum: Engine Tech
Topic: Road Race Track/AutoCross 351w
Replies: 55
Views: 2999

Re: Road Race Track/AutoCross 351w

So with reliability and on track mileage primary goals, that is a starting point 6500 rpm shift point motor?
by j-c-c
Mon May 10, 2021 6:09 am
Forum: Chassis / Suspension / Body
Topic: Drilled-Slotted Rotors & differential bore calipers
Replies: 6
Views: 265

Re: Drilled-Slotted Rotors & differential bore calipers

Yes, if "rear" here is defined as the trailing piston in regards to rotation. Not sure how much "heat" directly plays in this solution so much as pad "debris/gas"?
by j-c-c
Fri May 07, 2021 8:37 pm
Forum: Engine Tech
Topic: Computer controlled enforcement of speed limits in the EU
Replies: 34
Views: 1096

Re: Computer controlled enforcement of speed limits in the EU

You would think so, but I'm sure you as the dog's "controller", they would get a pass on any potential liabilities, unless say they failed negligently to disclose any known previous dog bite/vicious reports on the animal. It's a fair and good question.
by j-c-c
Wed May 05, 2021 1:32 pm
Forum: Engine Tech
Topic: Computer controlled enforcement of speed limits in the EU
Replies: 34
Views: 1096

Re: Computer controlled enforcement of speed limits in the EU

Fair enough. I just left the local Humane society, and they are hesitant to share a current contract as I can't honestly state I am interested in a current adoption, which they will, if I submit and pass the application process. It appears that this Humane Society has/had an agreement with local Ani...
by j-c-c
Wed May 05, 2021 11:27 am
Forum: Engine Tech
Topic: Computer controlled enforcement of speed limits in the EU
Replies: 34
Views: 1096

Re: Computer controlled enforcement of speed limits in the EU

JCC could you post a contract that states what you have said?. Or provide me a link? I would like to see that in writing. The only time I have ever heard of anything remotely close to what you are describing is most Humane Society's have a clause that you must spay or neuter the animal. If you don'...
by j-c-c
Tue May 04, 2021 8:34 pm
Forum: Engine Tech
Topic: Computer controlled enforcement of speed limits in the EU
Replies: 34
Views: 1096

Re: Computer controlled enforcement of speed limits in the EU

Do you have an article on this that shows what youre saying? Its not that I dont believe you, I actually want to read it. To be honest, we all knew this was coming eventually. They want to control everyone and that control is born out of the lowest standards (or those with no standards) from humans...
by j-c-c
Mon May 03, 2021 5:17 pm
Forum: Chassis / Suspension / Body
Topic: Drilled-Slotted Rotors & differential bore calipers
Replies: 6
Views: 265

Drilled-Slotted Rotors & differential bore calipers

Does using slotted and/or drilled rotors eliminate or mitigate the need for differential piston bore calipers? My question disregards in this discussion weight or cooling issues, in the thinking slots are best at "wiping" pads and holes are useful for removing pad gases/debris. And is the reverse th...