RC Giant Scale Cars For all those who love driving large scale rc cars share your projects or ask questions here.

HPI Baja With Reverse!

Reply

Old 08-07-2007, 11:54 AM
  #1  
brice_arnold
Senior Member
Thread Starter
My Feedback: (6)
 
Join Date: Jan 2004
Location: Los Altos Hills, CA
Posts: 491
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default HPI Baja With Reverse!

This was my weekend project from inception to finished prototype in three days. I know it's not practical but it's fun to drive and I'm sure the first of it's kind. For this first go around the shifter ended up getting interfering with the rear wheel which is why I used the front wheel set on the rear. I have a new design where the shifter is moved inboard.

Click image for larger version

Name:	ProjectBTAUright.jpg
Views:	204
Size:	79.0 KB
ID:	2239620

Click image for larger version

Name:	ProjectBTAUtop.jpg
Views:	250
Size:	82.4 KB
ID:	2239621

Click image for larger version

Name:	ProjectBTAUClose-Up.jpg
Views:	1303
Size:	74.3 KB
ID:	2239622

Here is a link to the video

[link]http://www.youtube.com/watch?v=1wzkTbbEbe0[/link]
brice_arnold is offline  
Reply With Quote
Old 08-07-2007, 12:34 PM
  #2  
Bratch96
Senior Member
 
Bratch96's Avatar
 
Join Date: Nov 2006
Location: Stonington, IL
Posts: 606
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HPI Baja With Reverse!

You think that's impractical?
I think you need to find a way to make money off of it.

good job!
Bratch96 is offline  
Reply With Quote
Old 08-07-2007, 12:57 PM
  #3  
ratpower396
Senior Member
 
ratpower396's Avatar
 
Join Date: May 2004
Location: South river, NJ
Posts: 776
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HPI Baja With Reverse!

very nice piece of engineering
ratpower396 is offline  
Reply With Quote
Old 08-07-2007, 01:14 PM
  #4  
kengentry5000
Senior Member
My Feedback: (2)
 
kengentry5000's Avatar
 
Join Date: Jul 2005
Location: Greensboro, NC
Posts: 1,331
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HPI Baja With Reverse!

Build quality is incredible for 3 days! Can you explain how it works?
kengentry5000 is offline  
Reply With Quote
Old 08-07-2007, 01:24 PM
  #5  
34Ford
My Feedback: (2)
 
Join Date: Feb 2003
Location: Western North Carolina
Posts: 472
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HPI Baja With Reverse!

Outstanding. Now if we had a 1/5th rock crawler.
34Ford is offline  
Reply With Quote
Old 08-07-2007, 01:29 PM
  #6  
TheJedi
Junior Member
 
Join Date: Jul 2007
Location: , CA
Posts: 29
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HPI Baja With Reverse!

I agree that is awesome. Too bad your 6 hours away or I would come see that thing!
TheJedi is offline  
Reply With Quote
Old 08-07-2007, 01:52 PM
  #7  
bigmodman
Senior Member
 
Join Date: Mar 2007
Location: mckinney, TX
Posts: 698
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HPI Baja With Reverse!

hey since you have built an internal one that doesnt get in the way of the rear wheel,would you like to sell that one>??????b/c i have been lokking for a reverseable trans for 1/5 scale to 1/4 scale and now i have lol i need one for my 1/4 scale rock crawler
bigmodman is offline  
Reply With Quote
Old 08-07-2007, 02:07 PM
  #8  
brice_arnold
Senior Member
Thread Starter
My Feedback: (6)
 
Join Date: Jan 2004
Location: Los Altos Hills, CA
Posts: 491
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HPI Baja With Reverse!

Sorry this one's not for sale. The concept is pretty simple I think there enough information in the video and pics that someone could copy this.

To evolve on the project I would like to switch from a reverse setup to a CVT setup. I have a rough idea of how to do it I just need to see if it's within my capabilities. All of the turned parts were done on very limited benchtop POS harbor freight mini metal lathe. I am very limited in what I can do with it at the moment. What I wouldn't give for a nice Hardinge.
brice_arnold is offline  
Reply With Quote
Old 08-07-2007, 03:33 PM
  #9  
bigmodman
Senior Member
 
Join Date: Mar 2007
Location: mckinney, TX
Posts: 698
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HPI Baja With Reverse!

oh ok lol yeah im only 15 though....hmm i need to get me a lathe.
bigmodman is offline  
Reply With Quote
Old 08-07-2007, 04:15 PM
  #10  
motors4fun
Member
 
Join Date: Jun 2007
Location: virginia, VA
Posts: 91
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HPI Baja With Reverse!

I am very impressed with the engineering. Great Job on that one.
motors4fun is offline  
Reply With Quote
Old 08-07-2007, 04:28 PM
  #11  
hndaman1
Senior Member
My Feedback: (6)
 
hndaman1's Avatar
 
Join Date: Oct 2005
Location: sheboygan, WI
Posts: 2,242
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HPI Baja With Reverse!

Kudos, BRICE that is just awseome........Now you just need to make us a CVT , instead of a spur/pinion
hndaman1 is offline  
Reply With Quote
Old 08-07-2007, 06:40 PM
  #12  
34Ford
My Feedback: (2)
 
Join Date: Feb 2003
Location: Western North Carolina
Posts: 472
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HPI Baja With Reverse!

Now a cvt would be sweet. I bet finding the right belt would be tough though. They rely on a set angle on the side of the belt for traction in the variable pulley. Whew.
34Ford is offline  
Reply With Quote
Old 08-07-2007, 09:20 PM
  #13  
RC_chaos
Member
 
Join Date: May 2003
Location: Montgomery, TX
Posts: 71
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HPI Baja With Reverse!

Very nice work! Congrats on your efforts. Unfortunately, the 5b doesn't give you much room to add stuff to the driveline. Maybe you could try your design in an FG or MCD. ????
RC_chaos is offline  
Reply With Quote
Old 08-07-2007, 10:17 PM
  #14  
Dave ESPI
 
Dave ESPI's Avatar
 
Join Date: Nov 2005
Location: Rotterdam, NY
Posts: 1,761
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HPI Baja With Reverse!

You make one for a FG Monstertruck, and I can have it MADE in the thousands for you by making a phone call.

A seriously sellable piece of hardware there buddy !
Dave ESPI is offline  
Reply With Quote
Old 08-08-2007, 12:17 AM
  #15  
slicrick
Senior Member
 
Join Date: Nov 2006
Location: milpitas, CA
Posts: 251
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HPI Baja With Reverse!

is that the baja clone from modelworks
slicrick is offline  
Reply With Quote
Old 08-08-2007, 01:34 AM
  #16  
TheFgMan01
Senior Member
 
TheFgMan01's Avatar
 
Join Date: Dec 2006
Location: fredericksburg, VA
Posts: 1,159
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HPI Baja With Reverse!

Thats real nice. maybe if it was under a stadium or beatle body it would hide it a bit more.
Do you have any issue's with rock or debrise getting caught in the gears??? You probally already thought over making a cover for your great design ?!
TheFgMan01 is offline  
Reply With Quote
Old 08-08-2007, 01:52 AM
  #17  
brice_arnold
Senior Member
Thread Starter
My Feedback: (6)
 
Join Date: Jan 2004
Location: Los Altos Hills, CA
Posts: 491
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HPI Baja With Reverse!


ORIGINAL: slicrick

is that the baja clone from modelworks
I almost feel insulted. LOL, no it's not a clone. I am an old school baja owner (as old as you can get since it's barely a year old now). If you look around you will see that I am one of the first people to start modding a baja with alloy beadlocs, hydraulic front brakes, and gutting and welding stingers to the exhaust can.

I've only driven the new tranny for about 15 minutes in a grassy park. I thought about a cover, but then it would look even more bulky than it already is. This reverse kit probably will not be going out any kind of baja bashings in it's lifetime. It was more of a showmanship/can it be done project. The billet spur gears alone (3x heavier than the stock plastic gear, and two of them!) are enough to make anyone shy away from this deadweight.

I suppose if I could clean up the shiffter by moving it inboard. There are some other things I would change and mayben then I would look at how to do a cover. I thought of a welded aluminum cover
brice_arnold is offline  
Reply With Quote
Old 08-08-2007, 06:28 AM
  #18  
hndaman1
Senior Member
My Feedback: (6)
 
hndaman1's Avatar
 
Join Date: Oct 2005
Location: sheboygan, WI
Posts: 2,242
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HPI Baja With Reverse!


ORIGINAL: brice_arnold


ORIGINAL: slicrick

is that the baja clone from modelworks
I almost feel insulted. LOL, no it's not a clone. I am an old school baja owner (as old as you can get since it's barely a year old now). If you look around you will see that I am one of the first people to start modding a baja with alloy beadlocs, hydraulic front brakes, and gutting and welding stingers to the exhaust can.

I've only driven the new tranny for about 15 minutes in a grassy park. I thought about a cover, but then it would look even more bulky than it already is. This reverse kit probably will not be going out any kind of baja bashings in it's lifetime. It was more of a showmanship/can it be done project. The billet spur gears alone (3x heavier than the stock plastic gear, and two of them!) are enough to make anyone shy away from this deadweight.

I suppose if I could clean up the shiffter by moving it inboard. There are some other things I would change and mayben then I would look at how to do a cover. I thought of a welded aluminum cover

Like Brice said he has been around for along time...There ia ALOT of us that have been

http://www.rcuniverse.com/forum/m_43...%2Cmods/tm.htm
hndaman1 is offline  
Reply With Quote
Old 10-30-2007, 06:05 PM
  #19  
Dave ESPI
 
Dave ESPI's Avatar
 
Join Date: Nov 2005
Location: Rotterdam, NY
Posts: 1,761
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HPI Baja With Reverse!

Brice, any update to this design yet ?

I've been toying with a few ideas, but no real decisions as to how it would be feaseable without a 4th channel to shift on a servo.

I would like to see how it fits on a larger chassis vehicle like a firehammer. Thanks
Dave ESPI is offline  
Reply With Quote
Old 10-30-2007, 06:19 PM
  #20  
jatoracing33
Senior Member
 
jatoracing33's Avatar
 
Join Date: Jul 2007
Location: johnstown, PA
Posts: 2,654
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HPI Baja With Reverse!

you seriously should try to make money with your work. great job
jatoracing33 is offline  
Reply With Quote
Old 11-03-2007, 04:59 AM
  #21  
matt0677
Junior Member
 
matt0677's Avatar
 
Join Date: Jan 2006
Location: Northampton, UNITED KINGDOM
Posts: 14
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HPI Baja With Reverse!

I would seriously look into protecting your idea there. I can guarantee you this will hit the market and if you don't do it, somebody else will do it with your design! I would buy one of these rather than a 2-speed kit.
matt0677 is offline  
Reply With Quote
Old 11-04-2007, 03:02 AM
  #22  
Osirisf16
Senior Member
 
Osirisf16's Avatar
 
Join Date: Jun 2007
Location: Paphos, CYPRUS
Posts: 2,828
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HPI Baja With Reverse!

Cool piece of engineering indeed. Hey man, can you explain how it works? PLEASE
Osirisf16 is offline  
Reply With Quote
Old 11-04-2007, 03:30 AM
  #23  
splcrazy
Senior Member
 
Join Date: Aug 2006
Location: somewhere
Posts: 3,237
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HPI Baja With Reverse!

it looks like a two speed set up than a reverse . lol with all that trouble to make a reverse i guess it wouldnt be hard to make a 2 speed for it then
splcrazy is offline  
Reply With Quote
Old 11-04-2007, 04:04 AM
  #24  
jasrx
Senior Member
 
Join Date: Jul 2006
Location: melbourne, AUSTRALIA
Posts: 840
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HPI Baja With Reverse!


ORIGINAL: splcrazy

it looks like a two speed set up than a reverse . lol with all that trouble to make a reverse i guess it wouldnt be hard to make a 2 speed for it then
he allready has made a 2 spd look at past posts...
jasrx is offline  
Reply With Quote
Old 11-04-2007, 09:10 PM
  #25  
splcrazy
Senior Member
 
Join Date: Aug 2006
Location: somewhere
Posts: 3,237
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HPI Baja With Reverse!

sorry i havnt seen his past posts regarding a 2speed.
splcrazy is offline  
Reply With Quote

Thread Tools
Search this Thread

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service