The DijonStock Digital Home Recording Support Forum

Last year all I did was make stuff for somebody else. I decided that in 2009 , I need to make stuff for me to get ready for the end of the world in 2012.

.Soooo........One of these caught my fancy

But , I don't want just any old lawnmower powered barstool , I want mine to run a little better than that.

Already have the frame welded up. Now the powerplant..............

Honda CB250 twin cylinder , turbocharged , parts scavanged from the local motorcycle parts recycler.

So far it's set at 6lbs of boost using a TRX-450 quad carburator , blower from an old Kawasaki and the 250cc Honda Rebel motor.

Initial calculations yield about 50hp and a top speed of a little over a 100mph the way its geared.

Here's the motor pictures. I about got it all worked out except for the hot side plumbing and the oiling system.






Yes , it all barely fits under a barstool. It's just so wrong.....

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THE MUSIC IS DOWN IN HERE
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Good judgment comes from experience, and a lot of that comes from bad judgment.

Use one of those to power the margarita machine. Safer, and so much more useful.

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My music: https://www.soundclick.com/bands3/default.cfm?bandID=1215402&content=songs

Or you could use them to automate your faders.

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Don't judge the coffee by its cup.
The proof of the cheese is in the eating

Or you could craft a Somali pirate deterrent device.......

OK , here's the pics of the finished frame section. This one is prototype number 2. The first one was made of 1 inch square mild steel. After some serious thought about how fast it's gonna go , I decided to make a stronger frame from 4130 chrome moly 1-1/4 inch tubing (aircraft). much more difficult to fabricate but safer and 4 times stronger. It took a 30 ton press to bend the front axle to shape. initial calculations put the power to weight ratio higher than an Indy car.





I think I have a good combination at Bonneville this year in the Lakester Bar Stool class world record this October. Current record is 47.586 miles per hour in the streamliner class , and the Lakester Class record of 46.425 mph.

Mine on paper is 2 1/2 times faster.

next week ......marriage of the powerplant and frame

msg

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THE MUSIC IS DOWN IN HERE
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Good judgment comes from experience, and a lot of that comes from bad judgment.

You amaze me, Geno.

Looks like the barstool might be the weak link in the safety equation at this point. Be careful on that thing, eh?

What color's it gonna be?

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My music: https://www.soundclick.com/bands3/default.cfm?bandID=1215402&content=songs

A quick thought... if you replace the rearmost crossmember with a flat blade design that you can rotate, you will be able to tweak the stiffness of the rear end. More tweakability=more speed. Shifter carts have this design element.

-= Beer

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I LOVE THIS!!! Ted Stevens, 82-year-old US Senator from Alaska and chairman of the Senate Committee on Science, Commerce and Transportation, for explaining in a speech how the Internet actually works: “It’s a series of tubes.”

Cool!

Who's driving?

No, I am not volunteering. OSHA approved? I think not!

Beer , the thing uses quite a few shifter kart components . Not sure what you mean on the rear suspension (or lack of any). I do know the shifter kart drivers choose from several different strengths from hard to soft. I'm assuming the flexing of the axles provides some tire planting. I chose a super soft one. This project is designed to do two things . Get me to the bar at the end of the Bonneville salt flats and be the first one to get waited on.

Yep , Gary , I'm flyin this thing.

Bonneville has been on my bucket list since I was a kid. I still don't know when I'm gonna spit off of Cheop's pyramid .

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THE MUSIC IS DOWN IN HERE
____________________________________________________

Good judgment comes from experience, and a lot of that comes from bad judgment.

Be careful. I don't want to be looking for a new co-admin.




[sharon mode off]

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Don't judge the coffee by its cup.
The proof of the cheese is in the eating

Uhuh, Geno, be sure to have a aprachute with you ...

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Blues aint nothing but the blues!

MSG.. sorry I wasn't clear...
I was referring to that part in the back that would loosely equate to a rear bumber. That's completely rigid. If you replaced it with a torsion bar... something shaped like a ruler (a blade ) but maybe two inches wide that could rotate on its longitudinal axis, you could turn it so the wide part faces fore and aft for stiff frame, or you could turn it so the flat part is facing up and down for a softer frame in the rear. You're pit crew will dial the setting in just right for you driving style.

Without a differential, your rear wheels will suffer from what is known as binding. It's the little fight they have over who has to travel the longest distance around the corner etc... If you soften your chassis a little, you will ease the weight on the inside tire (reducing binding) and produce greater exit speeds to the bar and a colder beer because it didn't sit so long waiting for your slow binding, butt to get there.

Regardless, a barstool racer with adjustable chassis torsion bar is just plain cooler if nothing else. LOL...

-= Beer

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I LOVE THIS!!! Ted Stevens, 82-year-old US Senator from Alaska and chairman of the Senate Committee on Science, Commerce and Transportation, for explaining in a speech how the Internet actually works: “It’s a series of tubes.”

Beer has gluten in it. Geno doesn't do gluten.

He drinks that petroleum byproduct you sometimes mix with limejuice...ta-kill-ya or something like that.

I think he just likes going fast and being first!

I'm not an "IT" I'm a human being!

-= Beer

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I LOVE THIS!!! Ted Stevens, 82-year-old US Senator from Alaska and chairman of the Senate Committee on Science, Commerce and Transportation, for explaining in a speech how the Internet actually works: “It’s a series of tubes.”

That's what she said.

Geno-ius work

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"You think you are going to die...and then you don't." © Robbie Jukebox - 23rd July 2004.

Here's the chassis / powerplant mockup plate patterns. The rear engine mounts are fairly complicated , but my new plasma cutter makes this task much easier.



A view of the overall marriage powerplant and running gear. I made special kingpin adaptors to fine tune the steering later. Still waiting on the front wheel hubs to get here from Canada. Still need to make the steering shaft , pitman arm , motorcycle handlebar adaptor yet.



Handmade turbo header with 2000 degree insulation wrap applied to keep the heat inside until it reaches the turbine wheel for expansion.



Turbocharger hot section



Turbocharger cold side (carburator mounts here)



Another shot of the exhaust plumbing



rear view

_________________
THE MUSIC IS DOWN IN HERE
____________________________________________________

Good judgment comes from experience, and a lot of that comes from bad judgment.

Plasma cutter???? That's cheating! LOL... What happened to the hacksaw and the hammer...ah the good old days! When I come visit I get to drive it!

-= Beer

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I LOVE THIS!!! Ted Stevens, 82-year-old US Senator from Alaska and chairman of the Senate Committee on Science, Commerce and Transportation, for explaining in a speech how the Internet actually works: “It’s a series of tubes.”

I used to use the very time consuming method of interconnecting holes drilled with a drill press and then grinding them to size and finsh with a grinder. Then I graduated to an oxy/acetelene cutting torch and grinding to size. With the plasma cutter the only grinding needed is only to deburr the finished part. A good plasma cutter is still very expensive but so is time when you get my age. I build enough crap to justify it .

Yeah , Beer , come on down a ride it. I got lotsa fast stuff. Besides , I don't think it will ingest any fowl unless you drive over by the stock tank anyway.

_________________
THE MUSIC IS DOWN IN HERE
____________________________________________________

Good judgment comes from experience, and a lot of that comes from bad judgment.

Motor installed , steering done , low speed towed taxi tests are OK . What's left ?
Quite a bit of detail stuff , turbocharger oil system fabrication , brakes and fuel system. Will be dissassembled and powdercoated when everything works. Time in project so far........about 50 hours.

_________________
THE MUSIC IS DOWN IN HERE
____________________________________________________

Good judgment comes from experience, and a lot of that comes from bad judgment.