Author Topic: XXO/BVGC '38 Chevy Coupe Build  (Read 1026918 times)

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Offline Tman

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #1290 on: August 23, 2012, 03:27:51 PM »
According to these sources a Hypoid (most popular third members) gear set is 92 to 96 percent efficient at power transmission. A spiral bevel (V-8 quick change) gear set and a single spur gear set are both 99 percent efficient. That makes a V-8 quick change 98.01 percent efficient . Tell me again why I should dump my quick change.
http://www.zakgear.com/Hypoid_worm.html
http://www.roymech.co.uk/Useful_Tables/Drive/Gear_Efficiency.html


Makes me feel better about my QC.....Sparky was starting to into my head with all his GM talk!

Offline 38flattie

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #1291 on: August 23, 2012, 10:48:23 PM »
Dales record verification run in XXO/BVGALT- 165.949
 
http://youtu.be/IaikdUEGO4s
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

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http://youtu.be/89rVb497_4c

Offline SPARKY

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #1292 on: August 24, 2012, 12:56:56 AM »
Buddy the V-8 quick change has an early Ford Bevel gear at its heart !  which is yours based On-- Dana??
Miss LIBERTY,  changing T.K.I.  to noise, dust, rust, BLUE HATS & hopefully not scrap!!

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Offline 38flattie

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #1293 on: August 24, 2012, 08:33:31 AM »
Sparky, according to Halibrand, the Champ is based on 38-52 3/4 and 1 ton truck Ford rear ends, and is a spiral beveled hypoid design.

I'm guessing it's the least efficient design?
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 38flattie

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #1294 on: August 24, 2012, 06:49:30 PM »
This is how the new QUEST 200 begins:


I shipped the spare good block to Pops29 today, and the cam blank to Dema Elgin.

Pops and Dale will start a new main girdle design, with the plans of being able
to handle more boost and higher RPM's.

Dema will grind a roller cam-I'd hate to lose a lobe or mushroom base off of our
current cam!

John K is starting his plans for aero-the Flatcad will look drastically
different next year in comp coupe.

Randy and I will get started on suspension-front axle and possibly a new
rear diff, tranny,  dry sumping the tranny and diff, body work and paint.

I've been accused of being loud, arrogant, and a braggart. Well, that may be so, but I'm also known for backing my words. I can promise you this: we are going to achieve 200 mph with this engine at some point, if it's humanly possible!
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 Tman

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #1295 on: August 24, 2012, 07:13:00 PM »
Like my dad always says "It ain't braggin if you can do it!" And so far my friend. every check you have written has cleared! :cheers:

Offline Captthundarr

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #1296 on: August 24, 2012, 07:17:48 PM »
Based on what ya'll have done, this ought to be real good. :cheers:
Frank
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C/GALT 137.65 Ohio Mile check that 144.12 2013, AA/GALT 159.34 Ohio Mile 2014. B/GALT 180.577 RECORD 6/15

Offline Jack Gifford

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #1297 on: August 25, 2012, 01:06:52 AM »
Tell me your reasoning for dry-sumping the trans and rearend.

Congrats on your SpeedWeek efforts!
« Last Edit: August 25, 2012, 01:08:47 AM by Jack Gifford »
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F/BFL 1-mile Loring record 2020

Offline DND

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #1298 on: August 25, 2012, 02:51:18 AM »
Hi 38

I was wondering how fast a 37'-38' Chevy coupe has ever gone on the salt, would you happen to know.

Thanks, Don

Offline 38flattie

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #1299 on: August 25, 2012, 10:53:26 AM »
Thamks everyone!

Jack, for the same reason the 'big boys' do it- to keep from losing HP due to the gears sloshing through the oil.

Don, I'm not sure. Out of the three 37/38's currently running, we are the fastest, but the others run front fenders, in other classes. I do know both of the other cars have spun-it's hard to get any aero when you have to run those pontoons for front fenders!
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 WOODY@DDLLC

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #1300 on: August 25, 2012, 11:06:54 AM »
Buddy, great seeing you, Dale and the crew at Speed Week! Good on all ya'all! {Plural for ya'all!}  :cheers: :cheers:

I thought about you when I saw this on a camper later - no one around so ???  :?
All models are wrong, but some are useful! G.E. Box (1967) www.designdreams.biz

Offline Roseville Carl

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #1301 on: August 26, 2012, 01:47:43 PM »
Woody thats great! Buddy should get him one of those!!!
 :cheers: :-D
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Offline desotoman

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #1302 on: August 26, 2012, 02:19:48 PM »
Final gear was a 2.40 - with a 1 to 1 trans ratio and 28" tires.

5600 rpm on the last run, against the rev limiter. The last 2 runs, with a higher tune, ran less time in the 2-1/4 than I did on a lower tune.

The first run Dale did, I thought I smelled clutch, bo nobody else did. I suspect we had clutch slippage at the end.

More later, when I get things unpacked, and have arrived in Pennsylvania.

Without tire or clutch slip I calculate around 194 mph for that combination. So something was slipping. Keep us posted.

Tom G.
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Offline 38flattie

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #1303 on: August 28, 2012, 07:40:13 AM »
Buddy, great seeing you, Dale and the crew at Speed Week! Good on all ya'all! {Plural for ya'all!}  :cheers: :cheers:

I thought about you when I saw this on a camper later - no one around so ???  :?

Woody, it was great seeing you too!

Will those 'wings' help us with aero??!! :wink:
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 38flattie

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Re: XXO/BVGC '38 Chevy Coupe Build
« Reply #1304 on: September 02, 2012, 03:20:49 PM »
Well, it's time to start thinking about next year-tearing the engine down for a rebuild, and reworking the car itself.
 
....but, the Ohio Mile is only about an hour from Dale's house! We're going to go and see what we can do on asphalt, since we will be so close anyway!
 
Dale's XXO/BVGALT class is open, and the record in XXO/BVGCC is 130.756 MPH, set by 'Scrap Iron', owned by Bobby Minis.
 
Wish us luck, or come by and see us!
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