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Author Topic: Rear Engine Modified Roadster Build  (Read 291119 times)

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Offline maguromic

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Re: Rear Engine Modified Roadster Build
« Reply #315 on: May 09, 2011, 02:07:49 AM »
I have had several pm's on wanting to see the two finished uprights and to know why we didn't go with a off the shelf upright like one off a corvette.  The simple answer is that when we design and build a component, we take into account all of the possible scenarios that the part may go through and what is the expected life of the part.  We felt the corvette parts while fine for road use and some sorts of racing, that they would not stand up to what we have in mind long term with the bigger engines. Tony
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Offline maguromic

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Re: Rear Engine Modified Roadster Build
« Reply #316 on: May 22, 2011, 12:09:49 AM »
On Friday I was at the track and manage to get some work done.  Using an old Stewart Warner (they are very sensitive) balancing machine we set out to balance the rotors. Once we had them chucked up and spinning we were in for a surprise.  One rotor was 3 grams off and the other was 2.7 grams off.  :-o Good thing the Brembo rep wasn’t there, as I would have thrown the rotors at him. :x  After some work we were able to get them to an balance we liked. Tony

One of the suspects, Dodge (yes that’s his name) balancing the rotors.


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Offline 38flattie

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Re: Rear Engine Modified Roadster Build
« Reply #317 on: May 24, 2011, 06:29:38 AM »
Tony, the craftsmanship is first class, and I'm sure your attention to details will pay of on the salt!
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Offline Rex Schimmer

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Re: Rear Engine Modified Roadster Build
« Reply #318 on: May 24, 2011, 12:00:36 PM »
Just a comment on the pic of the rear up rights. Note the Collins granite inspection table, and the boxes of Jo blocks and inspection blocks behind them. These are pretty serious parts made for people that make very accurate parts. Not just your average "garage guy" (like me and many others) that are turning the cranks on Bridgeports trying to widdle out some parts for our car and checking the dimensions with our Harbor Freight calipers.

This is going to be a very "first class" effort from some guys with lots of racing experience. Going to be fun watching it.

Rex
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Offline Rick Byrnes

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Re: Rear Engine Modified Roadster Build
« Reply #319 on: May 24, 2011, 12:53:02 PM »
Rex,

I'm enjoying it immensely.
The car is being done by some real professionals, and it shows.
It will be a work of art and I look forward to seeing it in person.
I have some of those same inspection tools, but can't do nearly the
same kind of work.

Reminds me of another wonderful build.
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Offline maguromic

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Re: Rear Engine Modified Roadster Build
« Reply #320 on: May 24, 2011, 05:28:53 PM »
Thanks for the nice comments guys.  It means a lot when it comes from your peers!

Buddy, the rotors were a pain to balance as we are using Brembo speedway rotors that are only 3/8” thick.  We didn’t have the luxury of grinding the center veins like you would on a vented rotor to balance them; instead we had to drill them.  This is a chart for weights of material from drilled holes published by Stewart Warner.  If anyone wants a better copy PM your email address. Tony
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Offline 38flattie

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Re: Rear Engine Modified Roadster Build
« Reply #321 on: May 24, 2011, 06:42:54 PM »
Tony, the level of detail that you guys are addressing clearly shows a very knowledgeable, and dedicated team.

I have no doubt that you guys will be successful in your endeavors! :cheers:
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With sufficient thrust, pigs fly just fine. However, this is not necessarily a good idea. It is hard to be sure where they are going to land, and it could be dangerous sitting under them as they fly overhead. -- RFC 1925

You can't make a race horse out of a pig. But if you work hard enough at it you can make a mighty fast pig. - Bob Akin

http://www.flatcadracing.org/
http://youtu.be/89rVb497_4c

Offline maguromic

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Re: Rear Engine Modified Roadster Build
« Reply #322 on: June 10, 2011, 02:38:08 PM »
I want wish some of the suspects helping on the roadster,  Steve and the guys for a successful 24 hrs of LeMans this weekend.  They are debuting a new paint scheme for the race and are qualified 3rd and 8th in class.   :cheers: Tony
« Last Edit: June 10, 2011, 02:39:50 PM by maguromic »
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Offline maguromic

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Re: Rear Engine Modified Roadster Build
« Reply #323 on: September 13, 2011, 02:38:00 AM »
Its been a while since I had a chance to update the build.  But this weekend we started fitting the girdle to the GMC block and started to make the cuts to square it up.  Still need to work out the new oiling for the crank and cam.  The caps will also be cross bolted for added strength. Tony
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Offline 38flattie

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Re: Rear Engine Modified Roadster Build
« Reply #324 on: September 13, 2011, 06:31:24 AM »
That 7 main girdle is wicked!
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With sufficient thrust, pigs fly just fine. However, this is not necessarily a good idea. It is hard to be sure where they are going to land, and it could be dangerous sitting under them as they fly overhead. -- RFC 1925

You can't make a race horse out of a pig. But if you work hard enough at it you can make a mighty fast pig. - Bob Akin

http://www.flatcadracing.org/
http://youtu.be/89rVb497_4c

Offline maguromic

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Re: Rear Engine Modified Roadster Build
« Reply #325 on: September 13, 2011, 11:35:43 AM »
Thanks Buddy.  But if it weren't for Doug Robinson loaning us his pattern and advising us, the 7 mains  wouldn't be possible. Doug along with Don Ferguson, Mike Kirby and Armond  has helped our vintage engine program tremendously! The GMC is more of a compilation of all their ideas than mine. Tony
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Offline RichFox

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Re: Rear Engine Modified Roadster Build
« Reply #326 on: September 13, 2011, 12:25:05 PM »
Having seen all those pretty pictures of parts, I was kind of expecting something more digital looking, making the chips. The avatar's are still #1.
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Offline maguromic

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Re: Rear Engine Modified Roadster Build
« Reply #327 on: September 14, 2011, 01:21:35 AM »
Rich, This thing is big and needs to be fitted (it also has extra supports for the cam).  It would have been a pain to write the program for the CNC and would have taken twice as long.  Buy the way did my friend Larry call you about the Dodge? Tony
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Offline RichFox

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Re: Rear Engine Modified Roadster Build
« Reply #328 on: September 14, 2011, 09:39:47 AM »
Yes. We had a nice talk.
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Offline maguromic

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Re: Rear Engine Modified Roadster Build
« Reply #329 on: September 18, 2011, 11:48:10 PM »
This is just  a pisser, I tore my ACL today while surfing. Looks like I will be immobile a bit and will be able to catch up on some drawings and damage some more of my brain cells.  Tony
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