Landracing Forum
Tech Information => Technical Discussion => Topic started by: ShawnRice on August 10, 2016, 02:11:16 PM
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We are beginning the build of a belly tank racer for Bonneville next year. I have a friend who uses solidworks. Does anyone have a set of plans they cuold send me to save time? I know they would need to be modified but it would be a good place for us to start.
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There are lots of different tanks so there is no universal plan. Most people bend or cut and fit the frame by making the main members follow a path just inside the perimeter of the center line of the tank. Cross members will depend on the size of the power train and the size of the driver. The bulkheads will be defined by the diameter of the tank at each position. Part of the fun is designing your own. There are several build diaries which may give you some good ideas.
Pete
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PJ :cheers: :cheers:
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When we designed/built our RMR, the chassis was modeled in Solidworks. I don't know if things have improved, but the program couldn't generate a cut list for the tubing. Other than that, it was a GREAT asset to fitting things in tight places (and proving that they would work as designed). Note that "we" means Tim Turner, fellow hot rodder, racing engineer, and great friend. :cheers:
vic
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I went with the Kiwi Belly Tank modeling technique. I know there isn't a program for Windows or Mac. I checked. :evil: :wink:
As Sid said, "Lay all your junk out on the floor and mark it with chalk".
Take measurements and you're good to go!!!!.
Worked for me. :-D
Thanks Sid. :cheers: :cheers: :cheers:
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Tanks are a bit of an animal to build, it's kinda like building a ship in a bottle & the bottle is shaped like a turd. :-D The more crap you have hanging out of the thing, the more drag you'll have so try not to build an oil rig cage on top of it.
Sid.
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Sid---lol here is to no oil rigs on the salt :cheers: :cheers:
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I, too, am interested in building a tank. Other builds were mentioned, how would I find them? Are they on this site? I've done some searching without luck. I thought I saw a build or two on the Hamb but can't find them either. Any suggestions? Also, the ECTA rule book the same as SCTA for a tank? I found a place to buy the ECTA rule book & membership but the SCTA site seems deserted.
Thanks, not trying to steal the thread I assume the OP would be interested as well. Oj
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I, too, am interested in building a tank. Other builds were mentioned, how would I find them? Are they on this site? I've done some searching without luck. I thought I saw a build or two on the Hamb but can't find them either. Any suggestions? Also, the ECTA rule book the same as SCTA for a tank? I found a place to buy the ECTA rule book & membership but the SCTA site seems deserted.
Thanks, not trying to steal the thread I assume the OP would be interested as well. Oj
The ECTA and SCTA rule books as far as special construction catagory is concerned are identical. The lakester falls into the special construction category. You should join the SCTA then you will get the rule book and you should also get their log book for the car. On this sites build diary's there a number of lakesters projects you can look over for ideas. Also at the final ECTA event for the season the end of this month on the Ohio mile there will be a some laketers in attendance which you can see in person.
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Go into http://www.landracing.com/forum/ . Go to Bonneville Salt Flats Discussion / Build Diaries and start looking for belly tank builds. There are lots of them.
Pete
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Thanks guys, I'll have a looksee. Part of my problem is the proper terminology, I'll learn.
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Motorcycle frame design starts with purchasing the parts that cannot be modified to fit the frame, like the engine, wheels, rider, etc. These are positioned over the frame building table in mid air using brackets. The frame is then built around these components. This method probably will work for a car.
You can do this virtually in 3D using computer aided design. The trick is finding or developing virtual parts like the engine, or in the case of a car, the engine, trans, rear end, steering gear, etc. You can save a lot of time if someone has modeled these shapes and you can use them.
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It really is hard to beat the garage floor technique for a lakester I started with a junk block and transmission and a rear end laid out on a floor with a center line on the floor, a line perpendicular to true up off of and a string line above to simulate the center line and upper body line.
The wooden build table made from 4x8 sheets of ply wood like Sumner used (see his build on the "purplesagetradingpost.com"-- is also very adaptable others prefer medal build tables
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well, that's how ours started
you could have a look on the Australian Belly Tank thread
I'm sure there's a drawing of the frame that's not in chalk somewhere
Maybe CAD
G :cheers:
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well, that's how ours started
you could have a look on the Australian Belly Tank thread
I'm sure there's a drawing of the frame that's not in chalk somewhere
Maybe CAD
G :cheers:
I'll bet the Reverend has it in CAD somewhere.
:cheers:
Fordboy
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I use AutoDesk Inventor, for a single drawing with 1 person doing it you are better off getting a piece of butcher block paper big enough for a 1:1 lifesize drawing. Tanks aren't all that big. That way you can lay the part on the paper you want to use and trace it or reverse trace it as a pattern to cut out a blank. After you go thru a mess of work to create a 3D rendering you can't help but wonder if it was worth all the effort, you could have actually built the damn thing and be looking at it. Now if you have moving parts or doing a structural analysis that is different, 3D rendering is worth the effort.
But a garage floor & a kiel or big paper & pencil is very hard to beat.
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I use AutoDesk Inventor, for a single drawing with 1 person doing it you are better off getting a piece of butcher block paper big enough for a 1:1 lifesize drawing. Tanks aren't all that big. That way you can lay the part on the paper you want to use and trace it or reverse trace it as a pattern to cut out a blank. After you go thru a mess of work to create a 3D rendering you can't help but wonder if it was worth all the effort, you could have actually built the Dodge thing and be looking at it. Now if you have moving parts or doing a structural analysis that is different, 3D rendering is worth the effort.
But a garage floor & a kiel or big paper & pencil is very hard to beat.
That is the main reason why guys like Al Bauerle used to "chalk out" frames on a concrete floor. Not sayin' it's the best method, just sayin' that lots of successful stuff still gets built that way . . . . .
:cheers:
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I'll bet the Reverend has it in CAD somewhere.
:cheers:
Fordboy
There's probably a photo of the chalk drawing, wire model and all the other things we did before cutting steel
including a number of scale models.....
And it still didn't all fit
G
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I'll bet the Reverend has it in CAD somewhere.
:cheers:
Fordboy
There's probably a photo of the chalk drawing, wire model and all the other things we did before cutting steel
including a number of scale models.....
And it still didn't all fit
G
Upsizing the frame, if possible, or, downsizing everything inside the frame can be helpful. It's about the "wool bag" being "three bags full". I know the midget changed out the Foster's overflow can (16 oz) for a PBR can (12 oz). Every little bit helps!!
Although, downsizing the cans does not help on the consumption side . . . . . :-D
:cheers:
F/B
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There is a CAD side view on Page 2 of the Australian Belly Tank Build Diary.
http://www.landracing.com/forum/index.php/topic,862.msg8683.html#msg8683
I am going to presume there are some other views, etc, as well, posted on other pages. Happy Hunting.
Cheers
F/B
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While chalk on the floor has worked in many instances, CAD can be a useful, indeed, valuable tool for planning out a complex construction. It largely depends on one’s facility for using the CAD program. I doubt if the Carbonite guys are ready to go back to the chalk method...
http://www.landracing.com/forum/index.php/topic,8665.0.html
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oj, don't mess around. Start doing stuff.
The longer you wait, the longer it will take.
Get your hands dirty man. :cheers:
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:cheers: