|
|
 Posted 3/29/2020 5:05:59 PM |
|
|
Supreme Being
 
Last Login: 4/6/2024 5:28:59 PM
Posts: 1,684,
Visits: 5,334
|
|
| Sorry, couldn't see that in the pics
|
|
|
|
| Posted 4/2/2020 11:15:16 PM |
|
|
/Shields\
Last Login: 9/20/2023 8:50:17 PM
Posts: 62,
Visits: 487
|
|
I'll post up some pics (when I get them sorted) of how I stretched the donor chassis, and thanks for the complement slysnake, if you didn't notice it was stretched, it is a testament reflected on the fabrication work. ......
\Shields/ Open
|
|
|
|
| Posted 4/4/2020 6:42:11 PM |
|
|
Supreme Being
Last Login: 4/6/2024 5:28:59 PM
Posts: 1,684,
Visits: 5,334
|
|
| Oh yes, It was meant as a compliment. It's a very interesting build.
|
|
|
|
| Posted 7/30/2020 5:28:47 PM |
|
|
/Shields\
Last Login: 9/20/2023 8:50:17 PM
Posts: 62,
Visits: 487
|
|
‘Mounting the Motor back on the 89 build’
I have often been asked; “Why set the motor back from its original chassis mounting position?”. Also I noticed this topic being discussed on previous posts including ‘Matt’s 89 Build’ within our forum.
As this was an important consideration when setting up the Stealthmobile build, thought I’d share my considerations that may help those about to embark on the same or of similar ground up builds.. or for those who may be interested.
This is one of many considerations to determine with any 89 Batmobile replica build as they are all unique individual ‘Ground Up’ fabrications.
In the case of the Stealthmobile, the engine and of course the transmission has been set back 27” (690mm) and lowered. It is being built as a high performance muscle car, with particular attention to Engine, Running Gear and Suspension performance, also strong reinforced Body and Frame structures. My intention is for it to be constructed as a show vehicle, in addition to being a strong performance machine.
The 89 Batmobile has its inherent challenges, with its unique low slung body shape, similar to that of exotic Lamborghini or Ferrari Supercars etc. which are commonly rear engine mounted. In the case of the Keaton Batmobile, as it is front engine mounted, lies one of many unique challenges.
I consider it advantageous, positioning the engine and Transmission back and lower, Increasing overall ‘vehicle ballast’ and improved ‘lower centre of gravity’.
This is also a modification I apply to all of my racing and performance car builds.
With the average weight of a cast iron Small Block Chevy V8 at around 575lbs (260KG) and the Big Block Chevy at around 685lbs (310KG) or more if fitted with cast iron intake, heads, water pump, manual box flywheel etc. Obviously engine weights are governed by what components are fitted. Alloy components is a common consideration in view of lightening the overall engine weight considerably.
The Gen3 all alloy Chevy LS1,6,9 etc , are ideal for the 89 Batmobile application, particularly the SB LS1 weighing in at around 430lbs (195KG).
Either way, add all that and the weight of the Transmission, Air comp, Mountings, etc.. and it soon all adds up and relevant when bolting all this out front of a 21’ long muscle car.
Moving the engine back is not so much as to reduce front vehicle nose weight although increasing centre of gravity as mentioned is a distinct added advantage.. It is also because;
1. Allows you to lower the engine, enabling it to fit better under the unique low body shape of the 89 Batmobile, which in turn, enables positioning the whole body lower onto the chassis also improving ballast, not to mention appearance and aero dynamics.
2. Shortens the overall wiring harness, whether it be custom made or in the case of using a matched donor engine harness and dash cluster, allows you to position everything in a similar position in reference to the ‘engine to dash cluster’ as was fitted in the donor vehicle, therefore enabling you to use an existing donor car harness and more. (Saves a lot of hassles)
3. Allows you to use a shorter and more importantly, a single Tail-Shaft, eliminating the need for a long tail-shaft (which can be speed limited or difficult to balance), or twin tail-shaft incorporating a centre bearing etc.
Important note!. One must be mindful not to lower the engine setup too far as Differential Yoke to Transmission output yoke (referred to as Pinion Angle), and in turn, Tail-Shaft to Crankshaft alignment at ride height must be considered in the overall setup. Wrong angles can lead to driveline vibrations and/or premature component wear or failure and running the risk of what is called ‘Excitation Torque’ and believe me, you don’t want that.
Keeping the diff pinion universal joint parallel with the output of the transmission uni will keep the angles the same, (or at least close) avoiding said problems.
Also transmission and engine sump overall ground clearance should not be overlooked.
4. Shortens the lengths of accelerator cables, gearbox/ transmission linkages, fuel lines, exhaust system etc. It all adds up.
5. More room for mounting radiator, also front turbine etc.
-----------------------------------------------------------------------------------------
Here is a link that may help with researching ‘Engine Weights’ for any application.
http://www.team.net/sol/tech/engine.html
To get a close calculation of LBS to KG - divide the LBS mass value by 2.205
-------------------------------------------------------------------------------------------
All of the above are approx or general calculations, mostly pertaining to the Stealthmobile..
As always, do your own research in reference to your individual setup.
Regards .....
\Shields/ Open
|
|
|
|
| Posted 6/2/2021 7:21:25 PM |
|
|
/Shields\
Last Login: 9/20/2023 8:50:17 PM
Posts: 62,
Visits: 487
|
|
Always adjusting and perfecting the design and the build.. There are many stories!.
Been a while since I posted any progress, however I do check in regularly.
Fabricating ground up machine’s like these is not for the faint hearted.. it is a huge undertaking to say the least, not to mention the intense (insane) financial commitment. Particularly if you have to build one in a modest or home setup.. it’s a different story building a machine in a fully equip workshop let alone having a team of people building and fabricating everything with you along the way. Either way, it’s a mission!.
It's not rocket science that these builds are a timeline of chapter challenges and perseverance, hence my posting record and also evidently seen with fellow builders post timelines. We all have our stories!.
As a working class man, earning a living keeps me time challenged most days.. if I’m not working or performing, I’m on the tools. I’ve built and modified a few machines since taking on the Stealthmobile.. I’ll include some pics with this post for any machine enthusiasts that may be interested.
I have many photos of the building of the Stealthmobile and had an idea of putting together a time line video which may better demonstrate the build process from start to ‘turn key’ finish.
It’s a journey of which I enjoy sharing, particularly when I look through the many wonderful toys & builds here, on the beast that is.. CLTC. ...............
\Shields/ Open
|
|
|
|
| Posted 6/2/2021 7:31:00 PM |
|
|
Forum Member
Last Login: 7/3/2023 1:44:12 PM
Posts: 383,
Visits: 6,742
|
|
Great update, that view from the back looks pretty clean 
|
|
|
|
| Posted 6/2/2021 8:04:22 PM |
|
|
Supreme Being
Last Login: 4/6/2024 5:28:59 PM
Posts: 1,684,
Visits: 5,334
|
|
| Thanks for the wise words and the nice pics.
|
|
|
|
| Posted 6/5/2021 9:21:05 PM |
|
|
Forum Member
Last Login: 4/26/2022 6:19:42 PM
Posts: 169,
Visits: 678
|
|
Idk how I missed this post, you answered a lot of questions here that I needed help with.
Thank you
/Shields\ (7/30/2020)
‘Mounting the Motor back on the 89 build’
I have often been asked; “Why set the motor back from its original chassis mounting position?”. Also I noticed this topic being discussed on previous posts including ‘Matt’s 89 Build’ within our forum.
As this was an important consideration when setting up the Stealthmobile build, thought I’d share my considerations that may help those about to embark on the same or of similar ground up builds.. or for those who may be interested.
This is one of many considerations to determine with any 89 Batmobile replica build as they are all unique individual ‘Ground Up’ fabrications.
In the case of the Stealthmobile, the engine and of course the transmission has been set back 27” (690mm) and lowered. It is being built as a high performance muscle car, with particular attention to Engine, Running Gear and Suspension performance, also strong reinforced Body and Frame structures. My intention is for it to be constructed as a show vehicle, in addition to being a strong performance machine.
The 89 Batmobile has its inherent challenges, with its unique low slung body shape, similar to that of exotic Lamborghini or Ferrari Supercars etc. which are commonly rear engine mounted. In the case of the Keaton Batmobile, as it is front engine mounted, lies one of many unique challenges.
I consider it advantageous, positioning the engine and Transmission back and lower, Increasing overall ‘vehicle ballast’ and improved ‘lower centre of gravity’.
This is also a modification I apply to all of my racing and performance car builds.
With the average weight of a cast iron Small Block Chevy V8 at around 575lbs (260KG) and the Big Block Chevy at around 685lbs (310KG) or more if fitted with cast iron intake, heads, water pump, manual box flywheel etc. Obviously engine weights are governed by what components are fitted. Alloy components is a common consideration in view of lightening the overall engine weight considerably.
The Gen3 all alloy Chevy LS1,6,9 etc , are ideal for the 89 Batmobile application, particularly the SB LS1 weighing in at around 430lbs (195KG).
Either way, add all that and the weight of the Transmission, Air comp, Mountings, etc.. and it soon all adds up and relevant when bolting all this out front of a 21’ long muscle car.
Moving the engine back is not so much as to reduce front vehicle nose weight although increasing centre of gravity as mentioned is a distinct added advantage.. It is also because;
1. Allows you to lower the engine, enabling it to fit better under the unique low body shape of the 89 Batmobile, which in turn, enables positioning the whole body lower onto the chassis also improving ballast, not to mention appearance and aero dynamics.
2. Shortens the overall wiring harness, whether it be custom made or in the case of using a matched donor engine harness and dash cluster, allows you to position everything in a similar position in reference to the ‘engine to dash cluster’ as was fitted in the donor vehicle, therefore enabling you to use an existing donor car harness and more. (Saves a lot of hassles)
3. Allows you to use a shorter and more importantly, a single Tail-Shaft, eliminating the need for a long tail-shaft (which can be speed limited or difficult to balance), or twin tail-shaft incorporating a centre bearing etc.
Important note!. One must be mindful not to lower the engine setup too far as Differential Yoke to Transmission output yoke (referred to as Pinion Angle), and in turn, Tail-Shaft to Crankshaft alignment at ride height must be considered in the overall setup. Wrong angles can lead to driveline vibrations and/or premature component wear or failure and running the risk of what is called ‘Excitation Torque’ and believe me, you don’t want that.
Keeping the diff pinion universal joint parallel with the output of the transmission uni will keep the angles the same, (or at least close) avoiding said problems.
Also transmission and engine sump overall ground clearance should not be overlooked.
4. Shortens the lengths of accelerator cables, gearbox/ transmission linkages, fuel lines, exhaust system etc. It all adds up.
5. More room for mounting radiator, also front turbine etc.
-----------------------------------------------------------------------------------------
Here is a link that may help with researching ‘Engine Weights’ for any application.
http://www.team.net/sol/tech/engine.html
To get a close calculation of LBS to KG - divide the LBS mass value by 2.205
-------------------------------------------------------------------------------------------
All of the above are approx or general calculations, mostly pertaining to the Stealthmobile..
As always, do your own research in reference to your individual setup.
Regards .....
|
|
|
|
| Posted 6/30/2021 7:28:09 PM |
|
|
/Shields\
Last Login: 9/20/2023 8:50:17 PM
Posts: 62,
Visits: 487
|
|
Jet Afterburner Replica – “To Flame or not to Flame?”.. or both!.
I'm referring to; ‘Actual naked flame & thrust simulation’ vs ‘LED Light, flame & thrust simulation’
Excuse the batmobile, I’m a motoring journalist, an enthusiast and a stickler for detail..(scroll on if you’re not into reading).
In an attempt to weigh up the pros & cons, I’m working on a new tech, 1:1 scale LED cylindrical Light flame & thrust simulation. A realistic visual concept to be placed within the afterburner exhaust duct, as similarly used on a much smaller scale in RC Jet afterburners.
My guess is that this may have all been done before; just I am experimenting for my own application.
Fabrication of a replica afterburner, of course incorporates the construction of a rear boot/trunk structure and afterburner mounting apparatus, also the housing of all associated components.
In light of considering an LED alternative, I soon compared the distinctive advantages of eliminating the need for the ‘possibly risky’ rear horizontally projected, pneumatically forced naked flame scenario, also the need for associated components like an exhaust duct, flammable gas, tank/s, hoses, ignition pod, compressed air & ducting, associated fittings, cylindrical gas injection nozzles, insulation, wiring harness, and cockpit control panel etc.
Also with the absence of the, naked flame aspect, there is the added advantage of not having to deal with legal departments and registration considerations of which the Stealthmobile is subject to here in Australia. A contentious issue which these governing bodies are not at all partial to, let alone replica machine guns with air over butane shot & smoke simulations, that hydraulically pop up for all to see!.
Well it certainly got me thinking how this alternative LED system could possibly work without being too cheap or a cop out in reference to achieving the element an ‘authentic jet afterburner recreation’. Sure it probably would look good at night, but would it pass as an all round satisfactory alternative?.
Of course this application will operate in conjunction with a credible sound system, as is already incorporated into the Stealthmobile whether it be actual naked flame or not.
I am already going down the road of naked flame; however it got me thinking of working out a way of incorporating one or the other, or both?. Still looking into that. Also just for the record, I have been looking into these high pressure gas cooking units, of course on a larger scale.
I have included RC LED unit YouTube links as an example of what I’m referring to. Obviously 1:1 scale will have to be developed with a much larger or a multiple LED light pack/s to truly simulate the visual aspect.
With all that said; “Is this a cop out or could it be an effective user friendly Afterburner Simulation alternative, that could Visually/Audibly pass the test of our most stringent critics?”
In the meantime, I’ll keep chipping away at it and will endeavor to get back with some sort of report.
.....................
https://www.youtube.com/watch?v=qS-T3Zj8pVY
https://www.youtube.com/watch?v=tKKCqjzNfSk
\Shields/ Open
|
|
|
|
| Posted 7/1/2021 5:55:59 AM |
|
|
Supreme Being
Last Login: 4/6/2024 5:28:59 PM
Posts: 1,684,
Visits: 5,334
|
|
|
|
|