Building "Thor"
Discussion
I would be interested to see pictures of the rear of the engine to see how the adaptor plate is mounted as there is very little material to bolt to.
In the Centurion tank there is a short shaft between the gearbox/steering unit and the engine which fits into the splines inside the crankshaft. There is a bit of play to allow for small amounts of movement between the two.
Charlie's Broomfield Rover has a step up box designed an built by himself. I suspect the Petersen Bentley has something similar built in house or to their own design. It is highly unlikely you will be able to get any drawings for one.
There will be a number of pieces you will have to 'engineer' for your design as it will be a 'one-off'.
The Allison box could be a good solution as it is designed for low a revving diesel engine in busses/trucks. It should also be stronger.
This reply may not seem too helpful but a big part of a project like this is the 'one-off' engineering. Charlie Broomfield wants his car to do 200mph. I suspect the Petersen is good for about 125mph (They are built on 1930 - 1935 Rolls Royce Phantom II chassis).
Mine will be geared to run at about 800 - 1000rpm at 75mph in top. I have yet to decide on wheel/tyre size.
Paul
In the Centurion tank there is a short shaft between the gearbox/steering unit and the engine which fits into the splines inside the crankshaft. There is a bit of play to allow for small amounts of movement between the two.
Charlie's Broomfield Rover has a step up box designed an built by himself. I suspect the Petersen Bentley has something similar built in house or to their own design. It is highly unlikely you will be able to get any drawings for one.
There will be a number of pieces you will have to 'engineer' for your design as it will be a 'one-off'.
The Allison box could be a good solution as it is designed for low a revving diesel engine in busses/trucks. It should also be stronger.
This reply may not seem too helpful but a big part of a project like this is the 'one-off' engineering. Charlie Broomfield wants his car to do 200mph. I suspect the Petersen is good for about 125mph (They are built on 1930 - 1935 Rolls Royce Phantom II chassis).
Mine will be geared to run at about 800 - 1000rpm at 75mph in top. I have yet to decide on wheel/tyre size.
Paul
thanks for the replies. They are millions of variations of Allison transmissions, but it looks like a 3000HS would do the trick. These are six speed with a top ratio of 0.64:1. Relatively easy to find here in the US too.They can handle 600hp and 1300ft lbs, so should be good in a relatively light car with skinny tyres. I plan on using 21" wheels with vintage Dunlops, so this will theoretically give me around 150mph top speed with a 3.00:1 rear end ratio and max engine rpm of 2850. (The Dunlops are only good for 95 though, but so many of these big aero-engine specials come out looking horrible because the wheels/tyres aren't in proportion and look too small). I presume that the engines are solid-mounted which would allow the transmission to fit as you describe, i.e. no rigid connection between block and box?
Such awesome things. https://www.youtube.com/watch?time_continue=1&...
doogalman said:
Such awesome things. https://www.youtube.com/watch?time_continue=1&...
rlol they take it to the south of france with a toothbrush! /dof cap! hate off the him! hate to over take a truck in the rain on motorway!Fabulous cars. Those guys have the right take on life.
Trouble is that cars like that are now serious money and most things have been done.
I am hoping mine will be a little different.
I am still in the information gathering stage.
I think I have found the tyres that will look right with what I have in mind. They are 285/45 x 24 - nearly 900mm tall!
Why tyres first? It is about getting the proportions right (I hope). Because I am stretching the chassis so much the wheels will need to be a lot bigger to look right.
But........... they need to be acceptable to the IVA man, speed rated to 150mph to keep insurance Co happy.
Another car has taken my eye as a design inspiration too.
[url]
I especially like the front and grill. I quite like the rear wheel cover - but would need to make it work for two. And wheel discs........
Time for some opinions please.
I am looking at using another car as a donor for the windscreen, doors and roof. I want a drop top or, at a push, a targa.
Why use an existing car. Well it will give me the glass with the markings the SVA will need but also give me decent door shut lines, keep rain out, enable security and the 'off the shelf' purchasing of parts.
BUT WHAT CAR?
I will aim to get a new reg. plate but if it ends up a Q, then so be it.
Paul
Trouble is that cars like that are now serious money and most things have been done.
I am hoping mine will be a little different.
I am still in the information gathering stage.
I think I have found the tyres that will look right with what I have in mind. They are 285/45 x 24 - nearly 900mm tall!
Why tyres first? It is about getting the proportions right (I hope). Because I am stretching the chassis so much the wheels will need to be a lot bigger to look right.
But........... they need to be acceptable to the IVA man, speed rated to 150mph to keep insurance Co happy.
Another car has taken my eye as a design inspiration too.
[url]
I especially like the front and grill. I quite like the rear wheel cover - but would need to make it work for two. And wheel discs........
Time for some opinions please.
I am looking at using another car as a donor for the windscreen, doors and roof. I want a drop top or, at a push, a targa.
Why use an existing car. Well it will give me the glass with the markings the SVA will need but also give me decent door shut lines, keep rain out, enable security and the 'off the shelf' purchasing of parts.
BUT WHAT CAR?
I will aim to get a new reg. plate but if it ends up a Q, then so be it.
Paul
hidetheelephants said:
The windscreen looks like a rear screen from something, PA vauxhall or something like that?
Not likely in 1938... https://www.youtube.com/watch?v=9z2-TbGqG6II was looking for some help with a donor for the screen, doors and roof chaps.
I know a split screen would be easier but a Land Rover canvas roof is not my idea of stylish.
I don't think I can replicate the curvature of that screen but maybe get something that at least looks 'right' and has the needed IVA markings.
It is the front grill etc. and rear wheel treatment I really like. That I will have to fabricate but the screen, doors and roof are items I would like to cannibalise.
Put your thinking caps on.....
Paul
PS. Loved the J Leno vid. Thanks
I know a split screen would be easier but a Land Rover canvas roof is not my idea of stylish.
I don't think I can replicate the curvature of that screen but maybe get something that at least looks 'right' and has the needed IVA markings.
It is the front grill etc. and rear wheel treatment I really like. That I will have to fabricate but the screen, doors and roof are items I would like to cannibalise.
Put your thinking caps on.....
Paul
PS. Loved the J Leno vid. Thanks
There are two problems I think - firstly the need to get a sufficiently "vintage" windscreen angle (modern cars have very raked screens, and you need something much closer to vertical), and secondly the need to get an E-mark. The car that springs to mind is the classic Saab 900:
It's even a bit wrap-around too.
It's even a bit wrap-around too.
1959-62 buick or similar aged oldsmobile screen possibly? - not sure about width though......
or possibly something from the late 40s studebaker range - rear screen.....
But as I previosuly said a split screen would my avenue.......something along the lines of a 41 to 49 Packard.........screen not the car!
or possibly something from the late 40s studebaker range - rear screen.....
But as I previosuly said a split screen would my avenue.......something along the lines of a 41 to 49 Packard.........screen not the car!
Edited by hedgefinder on Sunday 17th January 08:50
Remember that I will need the windscreen to have the correct makings for IVA, and I suspect older cars/American cars are unlikely to provide that.
I would also like it to be a drop top (or targa at a push) and want the roof, doors and windscreen to come from just one car.
Worth remembering that it is only those items I mention I will be using, so the rest of the car is unimportant. The finished product is likely to be quite wide and the length will shrink the size of any screen used.
It is also worth remembering that I will be taking an actual car and chopping it up, so I would rather it wasn't a 'classic' or valuable.
Paul
I would also like it to be a drop top (or targa at a push) and want the roof, doors and windscreen to come from just one car.
Worth remembering that it is only those items I mention I will be using, so the rest of the car is unimportant. The finished product is likely to be quite wide and the length will shrink the size of any screen used.
It is also worth remembering that I will be taking an actual car and chopping it up, so I would rather it wasn't a 'classic' or valuable.
Paul
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