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home made project pics, gearing question - 12/20/2007 6:12:40 PM   
vdubsport


 

Posts: 52
Joined: 2/27/2007
From: glendale, AZ, USA
Status: offline 		so i took my road car dragstr and decided to make my own. The chassies is all carbon fiber with all home made parts except for the rerend it from a bolink setup i got off of ebay. I also step up and bought a brushless sestem for nova. but now i have some gearing questions dom i run a 64p or a 48p setup with brushless. also do i gear it as a touring car or what i been trying to follow the setup sheet to get a final drive ratio but no luck any help would be great. Right know i have a 48p 81 spur gear with a 20 pion gear but i also have a 64 p 122 spur gear with a 35 pion gear what setup is better?

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RE: home made project pics, gearing question - 12/21/2007 12:28:39 AM   
My Name Is Brad



Posts: 573
Joined: 2/25/2006
From: Hudsonville , MI, USA
Status: offline 		Im new to drag racing, but I got to say your car looks amazing! I am about to make my own custom dragster.

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RE: home made project pics, gearing question - 12/21/2007 12:55:47 AM   
snellemin



Posts: 727
Joined: 3/22/2007
From: Tomball, TX, USA
Status: offline 		Nice looking setup man. I like the front wheels alot.

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Snelle-RC, A123 Racer

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       Post #: 3

RE: home made project pics, gearing question - 12/21/2007 2:02:17 AM   
hrnts69


 

Posts: 13
Joined: 11/22/2007
From: Nashville, IL, USA
Status: offline 		NICE!!! Were did you get that kind of Carbon Fiber at, and how thick is it???

(in reply to snellemin)
       Post #: 4

RE: home made project pics, gearing question - 12/21/2007 11:43:31 AM   
vdubsport


 

Posts: 52
Joined: 2/27/2007
From: glendale, AZ, USA
Status: offline 		the carbon is a little thinner than a eight of a inch thick or so, I got it a while back when my buddy was cleanig out his shop some of it is from a car i worked on that the carbon hood was damaged so i got it after we replaced it. A good place to look online is at tap plastics you can get already preformed sheets of it read to go or u can order by the yard and form it ur self. The wheels are home made from touring car wheels ,anybody have any good gearing setups?

(in reply to hrnts69)
       Post #: 5

RE: home made project pics, gearing question - 12/21/2007 6:38:40 PM   
ac hauswald


 

Posts: 143
Joined: 3/13/2004
From: Houston, TX, USA
Status: offline 		Hey vdubsport,

I run 48p gears. HPI spurs worked best for me. Robinson Racing Products aluminum pinions. 64p will offer more gearing options, but the 48p seem stronger for RC drag racing applications. "Most" of the cars competitng use 48p.

I'd say 48p is good for E.T.'s down to around 1.9sec. Below that they are strained. I base that comment on the fact that "many" Top Fuel electric cars use a spur gear a run (!). Yeah, you read right. Gets kinda expensive to use 48p in the 1.67sec range. That's the current IMDRA TFE record.

FWIW, I'm gearing my TFE using 32p. Limited gearing options and steel (!heavy!) pinions. "Most" of the Extreme Class cars are going to 32p-at least here in Texas. For your application, again, I'd recommend 48p.

Gearing? The way I do it is to gear to the national record and adjust from there. Example, current TFE mph record is 74.9mph. I back-plan my gearing from that speed. That is my starting point for gearing. As far as your application, I hesitate to hazard a guess. When I first began RC drag racing, I set my car up by marking off a 132ft course and using a Venom Speed Meter (VSM) to gear for max speed. The speed read-out doesn't need to be accurate. It just have to reflect better or worse performance for a given gear ratio. Later, I ran an actual RC drag strip with the VSM attached, and calibrated the VSM to my timing slips. Actually, for what it costs, the VSM wasn't that far off, and it was a big tuning help.

Hope this helps. Have fun.

AC


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RC Electric Drag Racing

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       Post #: 6

RE: home made project pics, gearing question - 12/22/2007 5:34:31 PM   
Bodyman1969


 

Posts: 8
Joined: 12/19/2007
From: Linton, IN, USA
Status: offline 		Where can you get the camaro body unpainted like the one in the picture?? Good looking car!!!

(in reply to ac hauswald)
       Post #: 7

RE: home made project pics, gearing question - 12/22/2007 5:59:44 PM   
ac hauswald


 

Posts: 143
Joined: 3/13/2004
From: Houston, TX, USA
Status: offline
quote:

ORIGINAL: Bodyman1969

Where can you get the camaro body unpainted like the one in the picture?? Good looking car!!!


Hey Bodyman,

http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXLSS9&P=0

Not sure if you're asking about mine in "My Models" or the black one above. BUT, I think they're the same bod. Thanks. Link above is where I got mine. Most LHS usually carry a variety of HPI bodies or can get one for you quickly. Again, be aware, it's a BIG body for a doorslammer drag chassis.

AC

< Message edited by AHR43 -- 12/22/2007 6:00:05 PM >

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RC Electric Drag Racing

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       Post #: 8

RE: home made project pics, gearing question - 12/22/2007 10:51:54 PM   
-DRE-


 

Posts: 92
Joined: 12/4/2007
From: houston, TX, USA
Status: offline 		what is the distance that you drag race from start to finish? also im new at this dragracing and thinking about getting one i have and on road rc now and was wondering if there are any dragrace events out in texas? also were could i get one of these drag cars?

(in reply to ac hauswald)
       Post #: 9

RE: home made project pics, gearing question - 12/23/2007 2:05:04 AM   
snellemin



Posts: 727
Joined: 3/22/2007
From: Tomball, TX, USA
Status: offline 		Hello Dre,

Houston has a a dragracing club now. Check out www.hamdrl.com

The "dragstrip" is 1/10 scale, thus 132 feet long.

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check out www.Hamdrl.org
Snelle-RC, A123 Racer

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       Post #: 10

RE: home made project pics, gearing question - 12/23/2007 7:28:25 PM   
vdubsport


 

Posts: 52
Joined: 2/27/2007
From: glendale, AZ, USA
Status: offline 		hey guys thanks for the help, i actually bought a speed meter for my nitro car im going to take it out and put it in my drag car this week and run some test runs

(in reply to snellemin)
       Post #: 11

RE: home made project pics, gearing question - 1/7/2008 3:38:54 AM   
dan95-5.0


 

Posts: 37
Joined: 8/7/2007
From: winnipeg, MB, CANADA
Status: offline 		you have to post some more pics of that body.

looks really cool with the skinnies and wide tires with the wheelie bar


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       Post #: 12

RE: home made project pics, gearing question - 1/7/2008 12:27:14 PM   
modrodz


 

Posts: 62
Joined: 6/15/2007
From: , IL, USA
Status: offline 		lookin at that camaro reminds me of my hpi camaro str car luv those camra bodies nothing like em 69,68,67 wheeeeeew!!! lookin good





Rickey ModRodz and ProRodz Performance

(in reply to dan95-5.0)
       Post #: 13

RE: home made project pics, gearing question - 1/23/2008 2:36:24 PM   
CrocEnd


 

Posts: 498
Joined: 2/16/2003
From: Darwin, AUSTRALIA
Status: offline 		vdubsport nic pic's
can you show us one of the main gear mount
Please Cheer's

(in reply to modrodz)
       Post #: 14

RE: home made project pics, gearing question - 2/24/2008 4:50:01 PM   
rcluke



Posts: 4869
Joined: 11/13/2006
From: middlesbrough, UNITED KINGDOM
Status: offline