In reply to alfadriver :
Cage cost has counted longer than i can remember
In reply to alfadriver :
Cage cost has counted longer than i can remember
In reply to Patrick :
I thought it was taken out at some point. If anything about LSR is going to bust the Challenge budget, the cage will.
Especially at today's tubing prices. If I have to build a cage right now it would cost 2x what it did a couple years ago. Keeping anything at $2000 is very hard right now. I can still do it, but it's not fun anymore
alfadriver said:In reply to Patrick :
I thought it was taken out at some point. If anything about LSR is going to bust the Challenge budget, the cage will.
That's why safety equipment shouldn't be counted. Not on the LSR challenge or on the regular challenge.
For example a fuel cell isn't going to make any speed improvement. But its sure a safety improvement. A kill switch is the same thing but you don't see them because of cost.
Calvin Nelson made 824 horsepower with a $150 Atlas engine. ( and I suspect there is more available since he doesn't open the engines up). I can buy V12's for not much more. In fact I've got a few free ones in the shop right now.
I don't know the going price for the various LS's but power is not an issue.
Thin wall square tubing isn't expensive either. Well maybe if you're building a 30 foot long car.
For a body you could use the shrink wrap used to cover boats in the winter. Want curves? Take some foam and grind it to the shape you want before you put the shrink wrap on. Since a lot of LSR cars are unsprung 4 bump stops would be all that's needed.
Weight is a good thing in LSR so plastic barrels to hold water.
In reply to frenchyd :
Water in barrels isn't rigid. That's a recipe for hitting a pebble and going on a cartwheeling sleigh ride. berkeley no. Absolutely not, hard pass.
Captdownshift (Forum Supporter) said:In reply to frenchyd :
Water in barrels isn't rigid. That's a recipe for hitting a pebble and going on a cartwheeling sleigh ride. berkeley no. Absolutely not, hard pass.
It's pretty common to have a large cooler filled with ice water for the intercooler.
alfadriver said:Captdownshift (Forum Supporter) said:In reply to frenchyd :
Water in barrels isn't rigid. That's a recipe for hitting a pebble and going on a cartwheeling sleigh ride. berkeley no. Absolutely not, hard pass.
It's pretty common to have a large cooler filled with ice water for the intercooler.
Yup. It's where the passenger seat would be.. Not plastic though. Used to be used an IC when turbo. Now it's just a ballast tank as its a high winding NA small block. Chasing records in an unblown class. Car has set records all over the place, topping off at a 316 average, with a 319 exit.
In reply to Captdownshift (Forum Supporter) :
OK build it however you want. Frankly I'm not counting on a plastic barrel to provide safety. The roll cage will do that.
You can bolt lead or whatever you'd like to gain weight but water is free
In reply to frenchyd :
Would the plastic barrel be inside of the cage? Plastic sheers at the anchoring point when subjected to lateral load force. 55 gallons and 8 pounds a gallon means that you'd have 440lb bouncing around inside the cage with you if it were to break free during a sleigh ride. The containment seat you'd need to protect yourself from that is over have your budget.
If you're not doing an anchored metal reservoir/ballast tank, I reiterate the no and hard pass. And it is absolutely selfish to think otherwise. One cheap bastard's oversight ruins and puts an end to an event for everyone. Maybe you could make a brass tank...
frenchyd said:Captdownshift (Forum your Supporter) said:In reply why would I protect the water with a cageto frenchyd :
Would the plastic barrel be inside of the cage? Plastic sheers at the anchoring point when subjected to lateral load force. 55 gallons and 8 pounds a gallon means that you'd have 440lb bouncing around inside the cage with you if it were to break free during a sleigh ride. The containment seat you'd need to protect yourself from that is over have your budget.
If you're not doing an anchored metal reservoir/ballast tank, I reiterate the no and hard pass. And it is absolutely selfish to think otherwise. One cheap bastard's oversight ruins and puts an end to an event for everyone. Maybe you could make a brass tank...
The tech committee determines safety, not the individual. SCTA in Bonneville well, there are some other organizations but even they have minimum safety standards. Personally I've never failed to pass tech in the 60 years I've been racing. Let's say an average of 5 events a year? x60= Somewhere around 300 events.
As far as a pebble causing a car to crash? Have you ever been to Bonneville? Wait, how big is this pebble going to be?
As far as putting a plastic barrel in a rollcage? Why would you do that? The rollcage is to protect the driver.
A 55 gallon barrel? Be pretty big and bulky. High speed is about reducing frontal area to a minimum. But like I said. Build yours however you want to.
I feel pretty confident in my ability to pass tech.
GaryC83 said:alfadriver said:Captdownshift (Forum Supporter) said:In reply to frenchyd :
Water in barrels isn't rigid. That's a recipe for hitting a pebble and going on a cartwheeling sleigh ride. berkeley no. Absolutely not, hard pass.
It's pretty common to have a large cooler filled with ice water for the intercooler.
Yup. It's where the passenger seat would be.. Not plastic though.
I think. Used to be used an IC when turbo. Now it's just a ballast tank as its a high winding NA small block. Chasing records in an unblown class. Car has set records all over the place, topping off at a 316 average, with a 319 exit.
I'm thinking of a lakester. Be pretty easy to stretch heat shrink wrap around it. Driver in front of engine. No need for a radiator. I could just put a tank on the bottom of the engine and air rushing by would keep it cool enough to cover the 6-8 miles the high speed track is long.
I have an English wheel so I suppose I could make a streamliner but if I'm going to push around that much air. I may as well make a Jaguar XKE. I already have a lot of the required molds and I'm sure there is enough of my old fiberglass I bought rolls of for my trailers I was building.
Actually, I'm beginning to wonder just how much turbo boost a HF side shaft engine will take... Leaf blowers? Or would mechanically driven supercharging work?
barefootcyborg5000 said:Mndsm said:ProDarwin said:ProDarwin said:A Naturally aspirated Predator 50cc class would be pretty interesting.
Actually how about a Bauer cordless drill class?
https://www.harborfreight.com/20v-cordless-12-in-drilldriver-tool-only-56725.html
Weren't we trying to find something to do at the challenge? Let's have spec drill. Everyone has to use the same 12v drill. Top speed wins. I still have the surplus Texas state patrol radar gun I bought from.....someone on here (and amuses me every time I remember I have it) and I know I'm not the only one that bought one.
Spec drill speed class. I'd show up just for that.
Its honestly more enticing to me than the challenge itself. What would the rules be? 2 wheels? Min weight?
Drill housing unopened? Or housing modified, but no electrical mods? Are battery packs open?
Lets guess these have a peak output around 500w... we are looking at speeds of 30mph ish?
Patrick said:Especially at today's tubing prices. If I have to build a cage right now it would cost 2x what it did a couple years ago. Keeping anything at $2000 is very hard right now. I can still do it, but it's not fun anymore
Patrick.
I typical build race cars from scrap or surplus metal. I drive through the various metal places. And pick it up. If I'm really looking for something specific it might take me all day. But I don't have any freight or delivery costs attached to it.
I'm also will to substitute for example I'll use DOM if chrome moly isn't available. I find the weight difference is typically minor. Even on a roll cage. Plus the scrap metal places typically sell by the pound and don't care what the grade is.
Minneapolis and StPaul are something like the 10th largest metro area so I can imagine any similarly sized metro area is about the same.
One place I've been going to for 40+ years still has many bundles of 6061 1 inch square .125 wall aluminum 22 feet long. Since they charge $25 a cut and no you can't cut it yourself it's probably too awkward for most. But at scrap metal prices. That's going to be the frame for my next car.
ProDarwin said:barefootcyborg5000 said:Mndsm said:ProDarwin said:ProDarwin said:A Naturally aspirated Predator 50cc class would be pretty interesting.
Actually how about a Bauer cordless drill class?
https://www.harborfreight.com/20v-cordless-12-in-drilldriver-tool-only-56725.html
Weren't we trying to find something to do at the challenge? Let's have spec drill. Everyone has to use the same 12v drill. Top speed wins. I still have the surplus Texas state patrol radar gun I bought from.....someone on here (and amuses me every time I remember I have it) and I know I'm not the only one that bought one.
Spec drill speed class. I'd show up just for that.
Its honestly more enticing to me than the challenge itself. What would the rules be? 2 wheels? Min weight?
Drill housing unopened? Or housing modified, but no electrical mods? Are battery packs open?
Lets guess these have a peak output around 500w... we are looking at speeds of 30mph ish?
Could have the battery be the 'spec' portion. Have a few batteries on charge and that's what everyone uses for power. Of course there would be discussions of battery degradation causing a reduction in top speed that would be the hot topic tho.
I just watched this video and I think it's the answer to our Top Speed challenge. Only $300 for the engine and $150 for the accessory kit at your local HF!
In reply to stroker :
I know someone that has a $300 shifter kart with two engines plus an extra $50 500cc 2 stroke 80hp engine. Bring it on.
David S. Wallens said:Several years ago, and JG can back me up, we had a seemingly legit suggestion to add a top speed competition to the $2000 Challenge.
The kicker: hold it on I-95.
(As I remember, the LPGA exit would have been either the start or finish line since it has an overpass with a sidewalk.)
A good 20+ years ago, the daytona bmw dealership had the "drive for the cure" promo, something like that. They had a group of cars they took to different dealerships for anyone to go do a set route on open road, including getting on at LPGA and getting off at the next exit(grenada) and back to the dealership. Basically, romp on some bimmers for free, and every mile logged was another dollar that bmw donated to breast cancer.
anyways, a Z4 going flat out on the long curvy on ramp blew my mind. Sitting so close to the rear wheels you could feel the yaw coming on. And also in that one stretch of interstate, one was able to get into some higher speeds "safely". I had never driven a sporty car before. I think i took a 7 series out too. Very fast, very big. So nice.
Top speed canoe challenge!
But seriously: spec cordless drill
ProDarwin said:Top speed canoe challenge!
But seriously: spec cordless drill
I think the fair button is entry cost includes the price of new drill and battery per team, unopened before competition. To be delivered with decals at event registration. Maybe just batteries?
Do we allow drill modding? Upgraded batteries?
I'm guessing for cooling purposes a lot of people would want to tweak the housing. But I am totally ok with a sealed spec setup as well.
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