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Posted: Mon Sep 22, 2008 8:23 am Post subject: Custom Machined specialized LDP trucks
I was wondering if it would be worth making a custom machined purpose built hangers for LDP in the spirit of the split fire?
How much did the CNC milled project cost the split fire innovator?
Is their enough of us to warrant designing and manufacturing a custom LDP hanger?
The reason I ask these questions is I think a custom truck set up can be designed that would makes LDP faster and more efficient so we can create more forward pump energy with less effort.
What do you think? _________________ Terry
i shot off a note to Gary, his site asphaltplayground seems to be out of commission now. but maybe he can give some idea here.
you might also ask Chaput what his plans are for his slalom/pump truck that's been in the proto stages for way too long, and he might even be willing to have you test one out??
Myself I can't afford to manufacture one I just wanted to spur conversation about a specialized Truck.
I just think it would be nice to make a truck were we don't half to do all the wedging and king pin modification. That will propel us faster and more efficiently.
I thought maybe one of us is a engineer or a Machinist for a living and could make a few hangers.
Maybe we could come up in the conversation what kind of truck geometry would propel us faster and more efficiently size and kind of king pin, Triple bushing truck and other features. Maybe we could approach someone who manufactures trucks to make them. Or we could just design a hanger with a say a Tracker RTX or Bennett baseplate. Also to make it easy have the axles screw in to the hanger like the split fire.
Then design and manufacture the proto hanger on EMachine shop
www.emachineshop.com/
I known a lot of yoyo player who have used this service to make one off aluminum yoyo's or small parts. If it works then we all can get more made. I was also on a Radio control rocker crawler board they designed their own chassis asa group project. They used Emachine shop. _________________ Terry
I haven't heard back from Gary on this. However I did recently share some thoughts with a guy that was thinking about "precision" trucks for LDP (such as Radikals/GOGs.) Essentially I find that maintenance is the key difference between slalom and LDP. We don't pick up our boards to inspect and tighten them every 30 second "run."
LDP rides are rough n' tough. More like multiple hours of riding over rugged terrain at a time. In the Northwest especially we ride trails and roads through rain, puddles, mud, leaves, gravel, etc. Not the nice smooth-swept slalom courses that you normally use precision trucks on.
What this means is that crud and dirt gets in the bearings, you hit rocks more often, and you ding up those pretty trucks fast. I've recently been having to throw away bearings because they got locked onto the precision axles, and I had to use a small hammer to tap them off when it came time to change wheels-- that's because the exact 8mm axle with just a little extra crud, locks onto the Biltin bearing spacers like superglue.
The other thing you have to be careful about with precision trucks are to make sure the axles are screwed into the hangars tight. Some people use locktite to make the seal permanent. Others prefer to just tighten the axles every now and then, so they'll still have the option to change axle lengths later. The risk in doing so is that if the axle loosens, you could end up snapping one, especially if you power off the rear (as you should!) My buddy Patrick broke a couple of these axles this year, and I broke a couple over the last few years.
Design-wise, the implication is you need to make sure your axles will recess into the hangars such that ALL the threads disappear, and the smooth axle shank is what you see in contact with the hangar itself. Why Radikals, GOGs, and other precision trucks bust at the axle is almost always because of axle loosening, then the threaded portion being exposed to more load.
ok so i am no professional but i might be able to make atlease a hanger. the only thing is i dont have the experience that you guys have with LDP so i dont know what do to, to make it a LDP specific truck/hanger. maybe if one of you guys draw me up a plan i can work with JP and work on atlease a prototype. _________________ The concrete is our canvas, our wave, our playgound, our catalyst for growth. When you feel it, flow with it, live in the moment; and shred it like you'll never skate again, everytime.
dude i really want someone to do this. ive been dying to try some pumping specific trucks... LDP specific trucks and someone here as to be able to come up with somehting. ^_^
blake if you want to go for real on this, we should talk with Spencer Smith as well, his Dad is an incredible wealth of knowledge on the machining side of things.
if we really ratcheted this up we'd want to generate some venture capital...not the easiest thing to pitch something as niche-market as this. for now I'd just have to be realistic about what I can do, like first, selling old stuff in the attic on eBay to generate funds
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