Author Topic: Bugatti Type 37 Build  (Read 35173 times)

StefanN

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Re: Bugatti Type 37 Build
« Reply #90 on: 19 Jan 20, 03:00 pm »
Shock absorber on an early Bugatti at the VSCC meet at Brooklands today.

StefanN

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Re: Bugatti Type 37 Build - bonnet louvres
« Reply #91 on: 25 Apr 20, 07:25 pm »
Well I've finally got back to the Bugatti and to putting some louvres on the bonnet.  I had intended to cut my own louvres because the Bugatti ones are square at the end rather than rounded, but making the louvre dies was turning into a never ending project, so I bought some standard louvres and cut them into two strips.  The plan is to recess them into the lightply on the bonnet, epoxy them in and then use body filler to blend the edges.   Because I'm cutting these from a square with two columns of louvres, the edges that I can use to attach the aluminium to the light ply is fairly narrow.  "Clamping" them in place while the epoxy dries has been a bit of a challenge.

StefanN

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Re: Bugatti Type 37 Build - bonnet louvres
« Reply #92 on: 26 Apr 20, 07:32 pm »
Louvres fitted.  Just need a bit of filler and paint.
I’ll probably add some on top too.

jim

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Re: Bugatti Type 37 Build
« Reply #93 on: 26 Apr 20, 07:43 pm »
Looks good stephan. Have you got the louvres facing inwards? Usually they face out don't they?
If you can drive round corners, you're not going fast enough.

StefanN

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Re: Bugatti Type 37 Build
« Reply #94 on: 26 Apr 20, 09:16 pm »
Looks good stephan. Have you got the louvres facing inwards? Usually they face out don't they?
I think these are to let the air that's flowing past the radiator out.   Pointing in and forward is correct for the these louvres on the Bugatti.  The ones on the top of the bonnet have the gap out and pointing forward.   The ones along the bottom of the bodywork are out and back.   That said, there's quite a lot of variation between individual cars

Marek assures me the whole gap in and forward approach is a French thing.

jim

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Re: Bugatti Type 37 Build
« Reply #95 on: 26 Apr 20, 09:31 pm »
Ok. It sounds like it should work. Where did you get the louvres from?  I might need some for my engine cover.
If you can drive round corners, you're not going fast enough.

StefanN

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Re: Bugatti Type 37 Build
« Reply #96 on: 26 Apr 20, 11:44 pm »
Where did you get the louvres from?  I might need some for my engine cover.
https://www.i-sells.co.uk/rytons-9x9-aluminium-louvre-ventilation-grille.  I cut these down the  gap in the
middle

RhysN

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Re: Bugatti Type 37 Build
« Reply #97 on: 27 Apr 20, 04:19 am »
My 1923 Peugeot had double louvres (factory original) inside facing forward and outside facing back. To be a bit more clear, in and forward out and back. How you would do that with a press I have no idea!
I have an article here that arrived from the Morgan club that I'll copy and post in a post of it's own, "How some make louvres"
We must avoid torturing our brains with false problems, it occupies but it can annoy. In jest!

StefanN

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Re: Bugatti Type 37 Build - shock
« Reply #98 on: 09 May 20, 09:42 pm »
I started work on the Bugatti/Hartford hybrid style shock absorber today, cutting lots of bits from an old alarm box.

Need steel for the mounting plate, and then need to make the link, attachment to the spring and star spring.   Not sure how to make the star spring though.

jim

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Re: Bugatti Type 37 Build
« Reply #99 on: 10 May 20, 06:51 am »
The Star spring could be made from a Belleville washer that you could cut out the star shape using an angle grinder.
If you can drive round corners, you're not going fast enough.

StefanN

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Re: Bugatti Type 37 Build
« Reply #100 on: 25 May 20, 10:16 pm »
I cut some faux panel lines today to break up the large areas of uniform blue.  Will also be adding more louvres.

Made a bit more progress on the Hartford dampers.  Need to make the link on the axle and the “resilient link” that connects the two.

Other jobs to do:
Dashboard and Instruments
New brake calliper
Take play out of handbrake pivot and create brake mechanism
Engine bay cooling
Gear lever
Radiator and stone guard
Headlights




StefanN

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Re: Bugatti Type 37 Build
« Reply #101 on: 26 May 20, 09:43 pm »
Ideas needed...

I'm fitting my Hartfordesque dampers to the chassis rails and one of the bolt holes I drilled goes in the inside of one of the cross members - I know, schoolboy error!

I can't drill into the back side of the cross member because the floor is in the way.   I could drill in from the front side (just), but not straight, and then fit a nut - perhaps even weld it in place.  Not so keen on putting a hole that close to a corner.

A rivnut would have to be on the inboard side of the chassis rail, so I'd have to create some sort of long nose for the rivnut tool.

Any cunning techniques out there folks?


Ron

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Re: Bugatti Type 37 Build
« Reply #102 on: 27 May 20, 07:53 am »
In situations similar to that I've previously welded a 25mm square of 6mm steel sunk into to the face of the box section and tapped it directly, then the bolt will tighten effectively without much worry for fatigueing the thread or the sidewall of the chassis rail, and also you could drill through the crossmember bottom to top to allow a 14mm rod to pass through that is tapped for the desired thread like a Clevis nut style of joint possibly.

Slack Alice

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Re: Bugatti Type 37 Build
« Reply #103 on: 27 May 20, 09:40 am »
Could you put a long length of threaded rod through the crossmember and come out the other side? Then you can drill a wrong hole in the other side to match!

StefanN

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Re: Bugatti Type 37 Build
« Reply #104 on: 27 May 20, 03:05 pm »
Thanks for the ideas.   Had to move it outside while doing a job in the garage and thought I’d grab a photo to share.  Radiator, dampers, louvres and handbrake all works in progress.