hood hinges - Page 2 - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans Advertise
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Body - Exterior
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #16 (permalink)  
Old 06-17-2019, 05:42 PM
fiftyv8's Avatar
Registered User
 
Join Date: Dec 2006
Location: https://youtu.be/uYIUzCopjpA
Posts: 305
Wiki Edits: 0

Thanks: 69
Thanked 130 Times in 89 Posts
Let us look at it another way then.
Am I correct in assuming the 2 long arms are the same length and the 2 short arms are of the same length?

Anybody have any idea what length they maybe?

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #17 (permalink)  
Old 06-17-2019, 08:09 PM
MARTINSR's Avatar
Brian Martin,Freelance adviser
 
Join Date: Jun 2004
Location: San francisco bay area
Age: 60
Posts: 16,146
Wiki Edits: 0

Thanks: 6,239
Thanked 6,695 Times in 4,305 Posts
I have to tell you something, you are in WAY over your head! I am talking trip to the moon over your head. The geometry in something like those hinges is VERY complex. Changing the length of one of those arms by a quarter inch could change the arch at the back of the hood by two inches! Hell, depending on how far back the rear of the hood is from the hinge it could be a 10 inch difference!

Where it's mounted on the firewall, where it's mounted on the hood, all that makes a difference, quarter inch on any one of those is going to change things a BUNCH.

Let me put it this way, on my 65 Buick Skylark the hood adjustments will give me the back of the hood being a half inch too high to being a half inch too low! That is JUST the adjustments through a hole that is 1/2" or so in size with a 5/16" bolt in it.

If you want to make hinges, get some stock ones that work and copy them with billet aluminum or gold bouillon or what ever you want to make it out of. Just copy the geometry of the hinges that work.

Brian
Reply With Quote Quick reply to this message
  #18 (permalink)  
Old 06-17-2019, 09:05 PM
fiftyv8's Avatar
Registered User
 
Join Date: Dec 2006
Location: https://youtu.be/uYIUzCopjpA
Posts: 305
Wiki Edits: 0

Thanks: 69
Thanked 130 Times in 89 Posts
Hey Brian, thanks for your constructive comments.
What I am really trying to do is keep the exact configuration of the hinge I posted but scale it down to fit and suit my engine bay size.

I just need a starting point with original dimensions and then I hope to say reduce all lengths equally by say 75% for example.

So all the workings will be the same just slightly smaller all over.
I see they sell 2 sizes, but both are too large for my requirements.

If I can't get any sizes to start with, I will just mock up something using my sons Meccano set until I get it right.

My request here was just to help save some time and effort by receiving help from others out there...

Attached are a couple of pic's.
First is a Photoshop of the proposed hood and the second is the firewall I am dealing with.

I have worked out a method of attaching my hinges, but just need help with arm length sizes...
Attached Thumbnails
Click image for larger version

Name:	Imagewater pipe.jpg
Views:	51
Size:	35.7 KB
ID:	444361   Click image for larger version

Name:	IMAG1559.jpg
Views:	50
Size:	59.4 KB
ID:	444363  
Reply With Quote Quick reply to this message
 
  #19 (permalink)  
Old 06-17-2019, 09:15 PM
idrivejunk's Avatar
Grand Prix User
 

Last journal entry: Last look
Join Date: Dec 2015
Location: NW AR
Age: 53
Posts: 3,771
Wiki Edits: 0

Thanks: 4,136
Thanked 4,764 Times in 2,831 Posts
I could measure some billet hinges for a 58 Impala. Possibly others. But he's right, geometry may bite you. Heres what I might do if working from scratch...

Drill 1/4" holes, closely and evenly spaced along some paint stir sticks or cardboard strips. Or that plumbing strap stuff with holes on a metal strip. Using 1/4" bolts, start guessing and bolting sticks together. Life size. Once you find a combo that looks like it has the appropriate motion, pop some rivets instead of bolts and try it on the cowl with some attached cardboard serving as the hood side. If you get that close, go to bar stock and make a flimsy metal version to mock up with the real hood. Maybe thread the bar stock and trim some countersunk bolts for that instead of rivets. If you are needing a slim hinge. A tiptoe through the boneyard could really be worthwhile on this, if only to make observations and maybe measure stuff. IMHO, if possible.

Yep, thats what I might do. For what thats worth.
Reply With Quote Quick reply to this message
The Following User Says Thank You to idrivejunk For This Useful Post:
fiftyv8 (06-23-2019)
  #20 (permalink)  
Old 06-17-2019, 09:19 PM
fiftyv8's Avatar
Registered User
 
Join Date: Dec 2006
Location: https://youtu.be/uYIUzCopjpA
Posts: 305
Wiki Edits: 0

Thanks: 69
Thanked 130 Times in 89 Posts
Great reply, thanks.
Thanks to guys for holding my hand thru this, as all constructive comments are appreciated at this early stage.

You guys are spoilt with access to bone yards which are few and far between where I hail from...
Reply With Quote Quick reply to this message
The Following User Says Thank You to fiftyv8 For This Useful Post:
idrivejunk (06-17-2019)
  #21 (permalink)  
Old 06-17-2019, 09:32 PM
idrivejunk's Avatar
Grand Prix User
 

Last journal entry: Last look
Join Date: Dec 2015
Location: NW AR
Age: 53
Posts: 3,771
Wiki Edits: 0

Thanks: 4,136
Thanked 4,764 Times in 2,831 Posts
Does this look like the right kind of configuration for your application?



I am sure it would have to be scaled down as you said but I can measure these tomorrow. In inches. If it will help you. Thats a 59 Pontiac but the hinges are from Eddie Motorsport for a 58 Impala and the 59 car is modified to use them. They look twice as big as what you need but if I understand correctly they could be what you need for reference. Let me know.
Reply With Quote Quick reply to this message
  #22 (permalink)  
Old 06-17-2019, 10:35 PM
fiftyv8's Avatar
Registered User
 
Join Date: Dec 2006
Location: https://youtu.be/uYIUzCopjpA
Posts: 305
Wiki Edits: 0

Thanks: 69
Thanked 130 Times in 89 Posts
Thanks idrivejunk, but somebody has found a pic with a tape against the hinge of my choice which should be enough to work from.
Thanks to the anonymous member who sent it.
Attached Thumbnails
Click image for larger version

Name:	HoodHinge00(Small).jpg
Views:	33
Size:	43.0 KB
ID:	444365  
Reply With Quote Quick reply to this message
  #23 (permalink)  
Old 06-17-2019, 11:02 PM
fiftyv8's Avatar
Registered User
 
Join Date: Dec 2006
Location: https://youtu.be/uYIUzCopjpA
Posts: 305
Wiki Edits: 0

Thanks: 69
Thanked 130 Times in 89 Posts
So lets get it out there for anybody else who finds a need for this information in the future.

Going by my estimates using the drawing as my guide, I think the;

1. width of arms is 3/4" or 0.75"
2. long arms approx 5 3/4" or 5.75" center to center
3. short arms approx 4 3/4" or 4.75" center to center
4. spacing between arms center to center is approx 1 9/16" or 1.56"

However, if you do the maths these measurements are not quite right but darn close.
By my measurements to get the short arm length, I should be able to deduct the spacing from the long arm and come up with the length of the short arm, but so far I am not...

I am beginning to think that each arm is of a different length meaning that the two short arms are not the same and same for the long arms.
The one thing that seems the same (or very close) is the arm spacing in both directions.

Any ways, I have something to work with now that will at least get me into the ball court of where I need to be...
Reply With Quote Quick reply to this message
  #24 (permalink)  
Old 06-18-2019, 02:31 AM
fiftyv8's Avatar
Registered User
 
Join Date: Dec 2006
Location: https://youtu.be/uYIUzCopjpA
Posts: 305
Wiki Edits: 0

Thanks: 69
Thanked 130 Times in 89 Posts
I think it will be critical to work out the offset of the 2 holes on the mounting bracket as well.
I have started mocking this hinge up in Meccano and while it is still a ways off, I'm sure I can zero in on the correct movement.
Reply With Quote Quick reply to this message
  #25 (permalink)  
Old 06-18-2019, 07:21 AM
S10xGN's Avatar
Gotta love a turbo!
 

Last journal entry: Body on Frame today.
Join Date: Aug 2004
Location: Port Neches, TX
Age: 66
Posts: 2,529
Wiki Edits: 0

Thanks: 0
Thanked 241 Times in 222 Posts
You could mock up a set from 1/4" plywood to see how they track...

Russ
Reply With Quote Quick reply to this message
The Following User Says Thank You to S10xGN For This Useful Post:
fiftyv8 (06-23-2019)
  #26 (permalink)  
Old 06-18-2019, 09:37 AM
MARTINSR's Avatar
Brian Martin,Freelance adviser
 
Join Date: Jun 2004
Location: San francisco bay area
Age: 60
Posts: 16,146
Wiki Edits: 0

Thanks: 6,239
Thanked 6,695 Times in 4,305 Posts
I am thinking you mock up a hinge out of sheet metal, something strong enough that it will hold it's shape but easy enough to make and modify.

Ideally you would do it with slotted holes or many holes next to one another so you can try different geometries to make it do what you want it to do. Then once you have it nailed you make it out of heavier steel.


Brian
Reply With Quote Quick reply to this message
The Following User Says Thank You to MARTINSR For This Useful Post:
fiftyv8 (06-23-2019)
  #27 (permalink)  
Old 06-18-2019, 09:40 AM
MARTINSR's Avatar
Brian Martin,Freelance adviser
 
Join Date: Jun 2004
Location: San francisco bay area
Age: 60
Posts: 16,146
Wiki Edits: 0

Thanks: 6,239
Thanked 6,695 Times in 4,305 Posts
I would be using one of my favorite tools, my Roper Whitney punch to punch holes in the sheet metal. If are doing a lot of sheetmetal stuff and don't have one, GET ONE, they are awesome!

Brian

Reply With Quote Quick reply to this message
  #28 (permalink)  
Old 06-18-2019, 08:32 PM
idrivejunk's Avatar
Grand Prix User
 

Last journal entry: Last look
Join Date: Dec 2015
Location: NW AR
Age: 53
Posts: 3,771
Wiki Edits: 0

Thanks: 4,136
Thanked 4,764 Times in 2,831 Posts
Quote:
Originally Posted by MARTINSR View Post
I am thinking you mock up a hinge out of sheet metal, something strong enough that it will hold it's shape but easy enough to make and modify.

Ideally you would do it with slotted holes or many holes next to one another so you can try different geometries to make it do what you want it to do. Then once you have it nailed you make it out of heavier steel.


Brian

I suggested paint sticks and cardboard then transfer to bar stock for initial trials with hood attached. But fifty sounded like the tape measure pic was his ticket for a starting reference. We were ninja'ed by "anonymous user" lol. I'm letting it ride.

Anybody else know what Meccano is?
Reply With Quote Quick reply to this message
  #29 (permalink)  
Old 06-18-2019, 09:18 PM
fiftyv8's Avatar
Registered User
 
Join Date: Dec 2006
Location: https://youtu.be/uYIUzCopjpA
Posts: 305
Wiki Edits: 0

Thanks: 69
Thanked 130 Times in 89 Posts
Check this out for Meccano, basically a Junior Constructor Set.
My son had a set given to him a good few years ago and he does not play with it now, so I figured since it has numerous flat metal strips with many holes it would serve me well as a starting point material wise.

Once I get close to what I feel is right, I can move on to some of the ideas others have offered up.

https://en.wikipedia.org/wiki/Meccano

Meccano used to be great when I was a kid many moons ago, but like most stuff these days it has lost its quality and moved to plastic and simple Leggo style modular stacking philosophy.

In the old days you could even make multiple speed transmissions and differentials etc.
Reply With Quote Quick reply to this message
  #30 (permalink)  
Old 06-19-2019, 06:27 AM
idrivejunk's Avatar
Grand Prix User
 

Last journal entry: Last look
Join Date: Dec 2015
Location: NW AR
Age: 53
Posts: 3,771
Wiki Edits: 0

Thanks: 4,136
Thanked 4,764 Times in 2,831 Posts
Ah. An erector set. Whatever works. Paper strips tacked to cardboard might also be a fast way to narrow down starting dimensions.
Reply With Quote Quick reply to this message

Recent Body - Exterior posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Insurance
Please select your insurance company (Optional)

Log-in



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Hood hinges? Stovebolter Body - Exterior 9 03-23-2008 03:30 PM
Hood Hinges ChrisMiddleron Body - Exterior 3 09-26-2003 10:47 PM
HOOD HINGES bomo Body - Exterior 2 12-26-2002 07:57 AM
hood hinges? John Boy Body - Exterior 4 10-11-2002 04:18 AM
57 p.u. hood hinges slider in wa Body - Exterior 5 10-10-2002 03:51 PM


All times are GMT -6. The time now is 06:27 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.