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Author Topic: Frazer Nash Norris Special  (Read 1141 times)

Mark Under

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Frazer Nash Norris Special
« on: 31 October 2020, 06:42:25 pm »
Thanks for the advice, I think choosing a car to model the build on could be difficult.

Just checked out some of the cars suggested and found a Frazier Nash that looks interesting.

Front axle and suspension would be an interesting challenge!

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Marek.Z.N

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Re: Frazer Nash Norris Special
« Reply #1 on: 31 October 2020, 10:17:26 pm »
That would make a great cyclekart and would be a really interesting front set up. what is the car called?

StefanN

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Re: Frazer Nash Norris Special
« Reply #2 on: 31 October 2020, 11:13:18 pm »
Think it’s the Norris Special based on a Frazer Nash TT Replica.   I saw it at Brooklands and the chain “gearbox” is terrifying.

RhysN

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Re: Frazer Nash Norris Special
« Reply #3 on: 01 November 2020, 10:55:40 am »
Mark, I have a front axle which would work for that car which would be available. It was made for exactly that suspension.

Mark Under

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Re: Frazer Nash Norris Special
« Reply #4 on: 01 November 2020, 04:18:50 pm »
I had a quick go at scaling the Frazer Nash Special, two small problems!  The first is I cannot find a good straight on side view of the car but I think I can work around this.

The second problem is scaling it off, I haven't got any wheels yet, Honda wheels seem popular and I took a guess at the outside diameter of these being 530mm and then scaled the picture/drawing to suit.

Could anyone confirm the outside diameter of a 17 inch Honda tyre.

Based on the 530mm OD wheel, it gives a wheel base of 1880mm is this about right?

Thanks.

RhysN

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Re: Frazer Nash Norris Special
« Reply #5 on: 01 November 2020, 05:16:23 pm »
Mark, you will struggle to scale the cars and make them work (and you can't scale you so you won't get in :) ) You are trying to "capture the spirit" of the original.. Shoot for a wheelbase of about 66 to 68". If you google Julian Grimwade you may find more, he uses the car.

StefanN

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Re: Frazer Nash Norris Special
« Reply #6 on: 01 November 2020, 05:53:30 pm »
If no-one else chimes in with Honda wheel and tyre size I'll measure my pit bike wheels tomorrow and let you know.

Here's some thoughts in case they're helpful:
As Rhys says, remember to leave enough space for a full-size person when scaling.
Get your body weight low and forward - to that end you can push the front of the ck body forward without losing the look and compress the scuttle (Bill's trick).
Don't make the cockpit too wide - sitting in other people's ck's will give you the best feel for that.
Think about the packaging of pedals and steering when planning your body construction - it can end up quite busy at that end!

Mark Under

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Re: Frazer Nash Norris Special
« Reply #7 on: 01 November 2020, 07:24:33 pm »
Thanks for the comments,

Although the cars are not exact replicas, I really need to draw something up before I start cutting metal.  I have found with other projects if I don't have a decent plan I spend ages in the workshop scratching my head!

I will try and scale the body and then alter it to accommodate the Honda engine and driver etc.  I think if I try a more free style approach it will end up looking a bit silly!  It sounds like people alter the length of the bonnet and rear tub to make things fit.


ChrisS

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Re: Frazer Nash Norris Special
« Reply #8 on: 02 November 2020, 07:59:20 am »
A tyre 2.25 x 17 measures an OD of 550mm.

StefanN

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Re: Frazer Nash Norris Special
« Reply #9 on: 02 November 2020, 08:29:18 am »
Just remembered there’s some info about weights and sizes on the Bugatti build journal (about page 10).
Pitbike wheel with 3.25 tyre. Diameter 600mm
Pitbike wheel with 2.50 tyre.  Diameter 570mm

Marek.Z.N

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Re: Frazer Nash Norris Special
« Reply #10 on: 02 November 2020, 09:08:34 am »
somewhere on the forum there are all the dimentions of the stevensons cyclekart design which is really useful for scaling

Marek.Z.N

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Re: Frazer Nash Norris Special
« Reply #11 on: 02 November 2020, 09:10:45 am »
also, overlaying the stevensons sizing guide with a side view picture of the car you are trying to scale is useful, you can cut parts out to fit the sizing and i found that was a good place to start. Stefan did that to design the bugatti aswell

Marek.Z.N

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Re: Frazer Nash Norris Special
« Reply #12 on: 02 November 2020, 10:24:43 am »
Like this (just quickly cut it on

TheGiantTribble

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Re: Frazer Nash Norris Special
« Reply #13 on: 02 November 2020, 05:29:54 pm »
Good looking inspiration car.
A couple of comments/suggestions re scaling.
Your height, width, and length can all be scaled, but remember they doesn't have to be to the same scale as each other. A bit like models trains bod is to one scale but the tracks can be to something else.
I found the scuttle, or rather leaving it off all together can make a big difference to the fitting the human in problem.
Probably the most important measurement is the height of the waist bulkhead/instrument panel because of entrance and exit, my first go at a CK involved being able to get in but not out!
Good luck and go for it.

Mark Under

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Re: Frazer Nash Norris Special
« Reply #14 on: 02 November 2020, 09:52:03 pm »
Thanks for all the advice, the Stevenson Drawing is very helpful.

I will push on with some drawings and see how it ends up!

Thanks

Mark