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#Post#: 4239--------------------------------------------------
Re: Frazer Nash Norris Special
By: jim Date: July 14, 2021, 12:23 am
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Looks real good there Mark.
Is the lay shaft there so you can get the drive ratios you want
without having big sprockets and allowing the seat back to be
closer to the rear axle?
The diff should give you very nice handling in tight corners.
I'm glad I fitted one to my kart.
#Post#: 4240--------------------------------------------------
Re: Frazer Nash Norris Special
By: Mark Under Date: July 14, 2021, 1:15 am
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Jim
Yes I put a lay shaft in to help keep the sprocket small but
mainly so it’s very easy to achieve a much greater range of gear
ratios.
With the sprockets I have it is currently set to 7.5-1 not
including the Torque converter but by changing one small
sprocket I can get anything from 6-1 up to 10-1
Obviously not having finished the kart I have no idea what the
best gear ratio is but I know from using Honda engines at work
they like to run at the top end.
#Post#: 5071--------------------------------------------------
Re: Frazer Nash Norris Special
By: Mark Under Date: November 21, 2021, 1:51 pm
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Winter has set in which means I have retreated to the workshop!
Hoping to get this running by Christmas so I can get on with the
body.
Using the pearless diff has proved to be a bit of a pain, all
the hubs etc are standard 25mm where the diff is 1inch so I have
had to bore everything out to fit.
Having done that I have machined the slots in the axle and lay
shafts for the key ways today.
Small jobs but I think I can now assemble the backend now and
not take it to bits again until it needs painting.
#Post#: 5142--------------------------------------------------
Re: Frazer Nash Norris Special
By: Mark Under Date: December 24, 2021, 8:13 am
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I managed to get a couple of days in the workshop leading up to
Christmas and have ended up with a finished rolling chassis.
Steering and drivetrain are complete.
A few smaller jobs to do but finally finished machining and
welding and can start the bodywork!
#Post#: 5147--------------------------------------------------
Re: Frazer Nash Norris Special
By: M.Z.Nahajski Date: December 26, 2021, 10:40 am
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Cool looking build!
#Post#: 5148--------------------------------------------------
Re: Frazer Nash Norris Special
By: Mark Under Date: December 27, 2021, 10:14 am
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Marek Thanks, hopefully it will still look cool when the
bodywork is done!
I was going to make a grp body but I really want to get this
finished now ready for 2022, so I have opted for aluminium
panels which I think will be a faster approach.
The front nose cone and engine cover may still end up being grp,
I’m not good enough at panel beating to make these from
aluminium.
I made the first two panels up today.
#Post#: 5149--------------------------------------------------
Re: Frazer Nash Norris Special
By: M.Z.Nahajski Date: December 27, 2021, 10:33 am
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Loving the dog leg in those panels like the original (i'm
assuming its the blue one owned by Julian Grimwade).How did you
do these.
aslo... GRP? is that a different name fore fibreglass or is that
a different material. not heard of it before.
#Post#: 5150--------------------------------------------------
Re: Frazer Nash Norris Special
By: Mark Under Date: December 27, 2021, 12:03 pm
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I don’t really have any sheet metal equipment so I ended up
bending the panels on the bench. I clamped them down with the
fold line along the front of the bench using a piece of angle
iron as a clamp. Then bent them up with a hammer and lump of
wood.
The other folds where done using a lump of 40mm square steel as
a dolly and a hammer.
I will take some pics when I make the next two panels.
Trying to keep it as close to the original as possible within
reason.
The Louvers are going to be a problem to form and unfortunately
the original has an awful lot of them!
I think GRP is fibreglass to anyone without any knowledge of the
subject. There probably is a difference?
#Post#: 5151--------------------------------------------------
Re: Frazer Nash Norris Special
By: M.Z.Nahajski Date: December 27, 2021, 12:20 pm
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depending on what skills or equipment you have you could TIG
weld aluminium louvre panels in to cut outs. If you dont have a
TIG welder you could try braising it in or using some other sort
of bonding or back panels to bond them in. Some body filler and
paint and you probably would know that they arent stamped in.
Alternatively a louvre stamp can be 3D printed when working with
aluminium (as long as its not too thick) or you can rivet on
louvre panels. Luckily the louvres on the Fazer Nash are all the
same length down the side of the bonnet which simplifies things
#Post#: 5152--------------------------------------------------
Re: Frazer Nash Norris Special
By: RhysN Date: December 28, 2021, 12:53 am
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GRP = glass reinforced plastic, it was what UK called fibreglass
before they adopted the term used pretty much everywhere else in
the world. It's actually a more accurate term really.
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