MK-I MK-II MK-III MK-IV GULF MIRAGE J-CAR LOLA
   | Notices | Hi member,
welcome to GT40s.com! If you've never posted on the forum maybe give it a go by introducing yourself in the Introduce Yourself Here forum. Also, think about becoming a Forum Supporter at GT40s.com. Becoming a supporter will allow you more PM space, an avatar, and the money is used to keep GT40s.com running.
Enjoy the forum!
Welcome to the GT40s.com, the World’s Largest GT40 resource.
You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, view pictures, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, Join Our Community Today!
Why not start with your first post today and become an active part of GT40s.com now! And, if you find you enjoy GT40s.com think about becoming a Forum Supporter. | | GT40 Tech - Exterior, Interior, AC, & Trim All that other stuff not in categories above. | 
11-26-06, 11:17 PM
|
#1 (permalink)
| | Brian McCarthy Bronze Supporter 
Join Date: Nov 2001 Location: Up in the sticks GT40: GTD
Posts: 491
Rep Power: 12  | Pre-formed blisters and bump-outs
I know this is a long shot but here goes. Are ther pre-manufactured bump-outs or blisters available that anyone knows of, for example are there a variety of sizes of "Gurney bubble" available in a catalog?
I need to bump my firewall ever so slightly, and being the lazy guy that I am, I'd just as soon buy a 1/4 sized Gurney Bubble and pop-rivet it in.
Yes, they can be made, but I'd rather be working on other parts of the build.
Many Thanks
Brian
__________________
...GTD-40
...LHD-LHS
...302 Roller Block
...R-21
...BRM Pin Drive wheels
...Gulf livery | 
|  | |
11-27-06, 04:19 AM
|
#2 (permalink)
| | wealdenengineer 10 tenths 
Join Date: Oct 2001 Location: East Sussex, UK
Posts: 1,104
Rep Power: 0  | Re: Pre-formed blisters and bump-outs
Hi Brian, we make them ! BUT I would suggest that, as we do as a matter of course, you change the engine bulkhead panel for a double skinned aluminium unit, and form the "bubble" into that by panel beating. I have never really liked a glassfibre panel held in with self tappers as a protection between the engine and the occupants of the car. Frank | |
| | |
11-27-06, 02:30 PM
|
#3 (permalink)
| | MikeDD 10 tenths
Join Date: May 2002 GT40: DRB
Posts: 1,472
Rep Power: 21 | Re: Pre-formed blisters and bump-outs
Brian
My DRB uses a bulkhead panel with integral fiberglass bubble...and RCR Fran sent me similar one for my Lola.
However if you want to stay with aluminum you may
consider bending up some ally and either riveting together or having
your local welder make it pretty. It doesn't have to be circular....no reason
it can't be made square, which is a LOT easier to bend. I don't know how
large a bumpout you're looking for....maybe something readily available
would work.
Take a look at Pit Pal Products - Home Page
These guys sell some really cool ally stuff.
Maybe p/n 3002 or 3003
MikeD
__________________
DRB GT40 # 49 (for sale)
RCR Lola MK IIIb | |
| | |
11-27-06, 03:46 PM
|
#4 (permalink)
| | Malcolm Gold Supporter
Join Date: Jun 2003 Location: Surrey, UK GT40: GTD
Posts: 1,593
| Re: Pre-formed blisters and bump-outs
Get a tray of sand and a round headed mallet and beat the c**p out of a sheet of ali to make a non riveted on bump/blister. To delineate edges of the blister, draw a face of least favourite politician/work colleague on the sheet of ali and stick to hitting just that. Not only do you get your bulkhead panel in about 1/2 hour, you are much less stressed. If it has to be double skinned, repeat process and bond together with appropriate sandwich filling.
__________________
Malcolm
GTD40, Mazda MAX5 MX5, Porsche 996 C4S
Lotus 51c for sale | |
| | |
11-27-06, 11:01 PM
|
#5 (permalink)
| | Brian McCarthy Bronze Supporter
Join Date: Nov 2001 Location: Up in the sticks GT40: GTD
Posts: 491
Rep Power: 12 | Re: Pre-formed blisters and bump-outs
Thanks for the advice guys, I should have mentioned that I want to use aluminum. At this point I'll probably go with beating an ali sheet over bean bag....
However, it would be nice to have an easy way out on occasion, I've done enough metal work to date to have built an airplane by now.....
Brian
__________________
...GTD-40
...LHD-LHS
...302 Roller Block
...R-21
...BRM Pin Drive wheels
...Gulf livery | |
| | |
11-28-06, 03:02 AM
|
#6 (permalink)
| | BenL 6 Tenths
Join Date: Apr 2004 Location: USA
Posts: 680
Rep Power: 11 | Re: Pre-formed blisters and bump-outs
Quote: |
Originally Posted by Brian McCarthy I've done enough metal work to date to have built an airplane by now..... | Soon you'll be flying at low altitudes. | |
| | |
11-28-06, 04:02 AM
|
#7 (permalink)
| | Malcolm Gold Supporter
Join Date: Jun 2003 Location: Surrey, UK GT40: GTD
Posts: 1,593
| Re: Pre-formed blisters and bump-outs
Quote: |
Originally Posted by Brian McCarthy However, it would be nice to have an easy way out on occasion, .....
Brian | There is an easy way! Get Jonathan to do it for you!
__________________
Malcolm
GTD40, Mazda MAX5 MX5, Porsche 996 C4S
Lotus 51c for sale | |
| | |
12-02-06, 01:48 PM
|
#8 (permalink)
| | Scott Calabro Supporting Vendor
Join Date: Oct 2006 Location: New England GT40: TS40 # 875
Posts: 874
Rep Power: 12 | Re: Pre-formed blisters and bump-outs
Brian...........An airplane....naah ! Not even close. 
S | |
| | |
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | | | | Thread Tools | | | | Display Modes |  Linear Mode | | 
Posting Rules
| You may not post new threads You may not post replies You may not post attachments You may not edit your posts
HTML code is On | | |
All times are GMT -4. The time now is 02:01 PM.
 |
