GT40s.com - View Single Post - RCR Visit

jmvelez · 03-21-06, 07:31 PM

I am glad that you finally looked for US Built Replica. I have not seen the RCR 40 and from the description on their website it looks good and the price is not low. But you made some comments about the aluminum tub that are not correct and not complete. I would not get on a airplane that is 30 years old without a major frame check.

1. Aluminum is lighter than steel but it is more brittle
2. Aluminum is more difficult weld and costly to fix
3. Aluminum is more rigid and does not absorb shock and stress as well as steel
4 Aluminum must be thicker than steel to be as strong. In torsion Steel has 3X at only 2X in weight
5 Steel is a stronger material, yields to stress, making it less brittle Aluminum

Enclose are two quotes one from Fran Hall of RCR and Bob Putnam of ERA

Ian.

I got 8300lb/ft/deg as a base unit without any of my bolt on extras..such as billet mounts and braces ,roll cage, rear shear plate which are standard parts on a completed roller/car or the new aluminum inner and outer roof section that we are currently working on.... ..so when we rerun the test with all of the options and a full roll cage
I will have my definative results and I will post the official paperwork ..!!!

--------------------
FRAN HALL replica manufacturer.....
www.race-car-replicas.com
RCR-40..Mk1,Mk2 & Mk4
RCR-70 Mk3b
RCR-P4
917 coming in '06

Kalun failed to scroll down to my correction in the previous thread. I'll forgive him this time.

Me: "Greg's right and "My bad"... Just goes to show you that my memory isn't what it used to be - and it wasn't too good to begin with.

12,500 lbft/deg=17,000Nm/deg

The ERA should be the same."

03-21-06, 07:31 PM	#18 (permalink)
jmvelez Rookie Join Date: Jan 2004 GT40: Puerto Rico Posts: 53 Rep Power: 5	Re: RCR Visit - Searching for a new GT40 I am glad that you finally looked for US Built Replica. I have not seen the RCR 40 and from the description on their website it looks good and the price is not low. But you made some comments about the aluminum tub that are not correct and not complete. I would not get on a airplane that is 30 years old without a major frame check. 1. Aluminum is lighter than steel but it is more brittle 2. Aluminum is more difficult weld and costly to fix 3. Aluminum is more rigid and does not absorb shock and stress as well as steel 4 Aluminum must be thicker than steel to be as strong. In torsion Steel has 3X at only 2X in weight 5 Steel is a stronger material, yields to stress, making it less brittle Aluminum Enclose are two quotes one from Fran Hall of RCR and Bob Putnam of ERA Ian. I got 8300lb/ft/deg as a base unit without any of my bolt on extras..such as billet mounts and braces ,roll cage, rear shear plate which are standard parts on a completed roller/car or the new aluminum inner and outer roof section that we are currently working on.... ..so when we rerun the test with all of the options and a full roll cage I will have my definative results and I will post the official paperwork ..!!! -------------------- FRAN HALL replica manufacturer..... www.race-car-replicas.com RCR-40..Mk1,Mk2 & Mk4 RCR-70 Mk3b RCR-P4 917 coming in '06 Kalun failed to scroll down to my correction in the previous thread. I'll forgive him this time. Me: "Greg's right and "My bad"... Just goes to show you that my memory isn't what it used to be - and it wasn't too good to begin with. 12,500 lbft/deg=17,000Nm/deg The ERA should be the same."