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

New Project

Reply
Old 01-29-2010, 05:01 AM
  #151
troppo
 
Join Date: Aug 2006
Location: hometown, AUSTRALIA
Posts: 252
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New Project

Would of course need an esky attached
troppo is offline  
Reply With Quote
Old 01-31-2010, 12:30 AM
  #152
Dirty_Vinylpusher
Thread Starter
 
Dirty_Vinylpusher's Avatar
 
Join Date: Jan 2009
Location: Close to the beach, AUSTRALIA
Posts: 3,495
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New Project

Ok got a bit done on the coupling for the rear swingarm setup today.

Using some stainless steel fittings a mate got for me a while back and I filed them in the "It'll come in handy" box.
I might try to make this a bit smaller and lighter down the track, but for now it's a good way to work out where things have to go.

Also got the sprocket mounted on the diff, and made some temporary bearing supports for the mock-up stage of the whole thing.
I'll ditch the drive cup setup off the diff, as I'm not doing individual suspension, and replace them with straight axles going to each rear wheel.











































































Dirty_Vinylpusher is offline  
Reply With Quote
Old 01-31-2010, 12:44 AM
  #153
troppo
 
Join Date: Aug 2006
Location: hometown, AUSTRALIA
Posts: 252
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New Project

When it comes to scrounging, modifying or seeing outside the box, you are the chanp mate......
The voices in your head must be running on a permanent caffeine high
troppo is offline  
Reply With Quote
Old 01-31-2010, 12:47 AM
  #154
Dirty_Vinylpusher
Thread Starter
 
Dirty_Vinylpusher's Avatar
 
Join Date: Jan 2009
Location: Close to the beach, AUSTRALIA
Posts: 3,495
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New Project


Quote:
ORIGINAL: troppo
When it comes to scrounging, modifying or seeing outside the box, you are the chanp mate......

Hehe yeah...
I guess it's because I've never really had a look inside the box in the first place......






Dirty_Vinylpusher is offline  
Reply With Quote
Old 01-31-2010, 12:47 AM
  #155
da mad maori
 
Join Date: Jul 2006
Location: , AUSTRALIA
Posts: 771
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New Project

plumbing fittings?????
your unreal man lol...
way to modify what the diff from??
da mad maori is offline  
Reply With Quote
Old 01-31-2010, 12:49 AM
  #156
Dirty_Vinylpusher
Thread Starter
 
Dirty_Vinylpusher's Avatar
 
Join Date: Jan 2009
Location: Close to the beach, AUSTRALIA
Posts: 3,495
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New Project

It's an FG diff that DC2MAN sent me.



(Thanks again DC )







Dirty_Vinylpusher is offline  
Reply With Quote
Old 01-31-2010, 12:50 AM
  #157
da mad maori
 
Join Date: Jul 2006
Location: , AUSTRALIA
Posts: 771
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New Project

lol nice work...
is not often you here of fg diff blowing so you should have a decent unit there
da mad maori is offline  
Reply With Quote
Old 01-31-2010, 02:31 AM
  #158
Dirty_Vinylpusher
Thread Starter
 
Dirty_Vinylpusher's Avatar
 
Join Date: Jan 2009
Location: Close to the beach, AUSTRALIA
Posts: 3,495
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New Project

Cool.
Yeah DC reckons they're pretty tough.

I'll still be having a go at making my own though and probably use this diff in the other car.





Dirty_Vinylpusher is offline  
Reply With Quote
Old 01-31-2010, 05:05 AM
  #159
dc2 man
 
Join Date: Feb 2009
Location: limerick, IRELAND
Posts: 2,144
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New Project

wow dv i like the look of the sprocket on that diff,fairly solid looking set up.

also that suspension set up looks awesome,they look like great a-arms. what way is the weight going so far?

you should get a nice spread of power and good handling from that diff in any aplication you use it on.

man my beetle is very heavy and the engine is 7.5hp plus and i am running "still" the same diff now for the last year,untouched and not even inspected,last time i checked it for greese was when i fitted the elcon balldrive system was over 5months ago.

just a testament to how tough they are.
dc2 man is offline  
Reply With Quote
Old 01-31-2010, 11:58 AM
  #160
Frederik_b
 
Frederik_b's Avatar
 
Join Date: Dec 2009
Location: , QC, CANADA
Posts: 449
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New Project


Quote:
ORIGINAL: Dirty_Vinylpusher

Ok got a bit done on the coupling for the rear swingarm setup today.

Using some stainless steel fittings a mate got for me a while back and I filed them in the "It'll come in handy" box.
I might try to make this a bit smaller and lighter down the track, but for now it's a good way to work out where things have to go.

Also got the sprocket mounted on the diff, and made some temporary bearing supports for the mock-up stage of the whole thing.
I'll ditch the drive cup setup off the diff, as I'm not doing individual suspension, and replace them with straight axles going to each rear wheel.




Nice work, thats a very nice looking front end! Do you have a pic of the whole car where we can see the proportions including the engine and rear end ?

That is probably a good thing that the stainless T is heavy (like in heavy duty) as I can imagine there is some stress at this point. That a ingenious setup for the rear suspension, are you planning to use similar shocks setup as in the front ?

Fred

Frederik_b is offline  
Reply With Quote
Old 01-31-2010, 03:50 PM
  #161
Dirty_Vinylpusher
Thread Starter
 
Dirty_Vinylpusher's Avatar
 
Join Date: Jan 2009
Location: Close to the beach, AUSTRALIA
Posts: 3,495
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New Project


Quote:
ORIGINAL: Frederik_b
Do you have a pic of the whole car where we can see the proportions including the engine and rear end ?
Only the ones from the other day before I started on the swingarm mount.

The wheelbase is about 700mm though.
I'll take a couple of pics today.









Dirty_Vinylpusher is offline  
Reply With Quote
Old 01-31-2010, 03:54 PM
  #162
Dirty_Vinylpusher
Thread Starter
 
Dirty_Vinylpusher's Avatar
 
Join Date: Jan 2009
Location: Close to the beach, AUSTRALIA
Posts: 3,495
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New Project

Oh, almost forgot.

Cracked open a couple of laptop batteries last night after watching those "hack" videos on YouTube.
Inside there's 8 nice batteries, a bit bigger than AA's.

One of the laptops hadn't been charged for over a year and each individual battery inside it still held 3.9V! [X(]
Gonna put them on charge and see what they get up to.

Could be a good battery source





Note AA for size comparison.









Dirty_Vinylpusher is offline  
Reply With Quote
Old 01-31-2010, 04:28 PM
  #163
QSPSB2
 
QSPSB2's Avatar
 
Join Date: May 2009
Location: Mishawaka, IN
Posts: 267
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New Project

Hmmmm. isn't this the same type of laptop battery that led to all them laptop fires a few years back... lol..lol..

Just joking... I'm sure you will make them work some how
QSPSB2 is offline  
Reply With Quote
Old 01-31-2010, 04:37 PM
  #164
Dirty_Vinylpusher
Thread Starter
 
Dirty_Vinylpusher's Avatar
 
Join Date: Jan 2009
Location: Close to the beach, AUSTRALIA
Posts: 3,495
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New Project

Nothing wrong with some fireworks every now and then.
Adds to the effect.


Seriously though, it seems that almost all large batterypacks of any kind contains smaller batteries.
There's a lot of good, cheap sources for powerful and rechargeable batteries out there for us cheapskates.


Just gotta get a voltage regulator of some sort to bring it down to 6V.





Dirty_Vinylpusher is offline  
Reply With Quote
Old 02-01-2010, 12:39 AM
  #165
Fabe
 
Join Date: Aug 2005
Location: laval, QC, CANADA
Posts: 137
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New Project

Hey DVP, I hope you're planning on using a dedicated charger for lithium chemistry batteries! I've got quite a few of those lying around as well but have never used them. I felt the need for a voltage regulator, voltage cutoff, and explosion hazard next to my gas tank was not worth the extra capacity.

Whatever you do, be careful, because we need to see some more home creations coming from Australia...
Fabe is offline  
Reply With Quote
Old 02-01-2010, 11:30 PM
  #166
Dirty_Vinylpusher
Thread Starter
 
Dirty_Vinylpusher's Avatar
 
Join Date: Jan 2009
Location: Close to the beach, AUSTRALIA
Posts: 3,495
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New Project

My sparkie mate takes care of all the electrickery things that are above my head.
And if he can't figure out a way to blow something up, I will....



Right, here's some recent pictures.
Playing around a bit with the pivot point of the rear swingarm.

What do you reckon about shocks at the front of the whole setup, like where the red clamp is in the picture.
Will it work?
















Dirty_Vinylpusher is offline  
Reply With Quote
Old 02-01-2010, 11:57 PM
  #167
sam123
 
Join Date: Feb 2005
Location: Melbourne, AUSTRALIA
Posts: 506
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New Project

That looks like an interesting setup you have there. Nice job!



I'm not sure how stiff the shocks you have are, but in the position you have the clamp I think it should work well. If you find that the suspension is too soft, you could always lengthen the part of the beam that extends from underneath the engine a bit.
sam123 is offline  
Reply With Quote
Old 02-02-2010, 12:50 AM
  #168
Dirty_Vinylpusher
Thread Starter
 
Dirty_Vinylpusher's Avatar
 
Join Date: Jan 2009
Location: Close to the beach, AUSTRALIA
Posts: 3,495
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New Project

Well I'm gonna have a go at making my own shocks from those gas struts, so I'll be able to adjust/change the stiffness as I please.










Or that's the idea anyway.








Dirty_Vinylpusher is offline  
Reply With Quote
Old 02-02-2010, 02:59 AM
  #169
Dirty_Vinylpusher
Thread Starter
 
Dirty_Vinylpusher's Avatar
 
Join Date: Jan 2009
Location: Close to the beach, AUSTRALIA
Posts: 3,495
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New Project

Just a couple more mock-up shots.
The motor is definitely sitting too high so that will have to be changed.

Found a bearing holder that suits the diff.
Just need something for the sprocket side.


And wheelbase and track width measurments.
A bit too short perhaps.

Aiming for 700mm wheelbase
































Dirty_Vinylpusher is offline  
Reply With Quote
Old 02-02-2010, 07:18 PM
  #170
Bob-Stormer
 
Bob-Stormer's Avatar
 
Join Date: Apr 2005
Location: Glasgow, MT
Posts: 245
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New Project

Quote:
What do you reckon about shocks at the front of the whole setup, like where the red clamp is in the picture.
Will it work?
Work just fine. Be interesting too! Don't over spring it. and if need be, don't be afraid to make the lever arm longer or shorter. Nothing says those rear shocks can't be all the way at the front of the car on a long lever arm if need be.
Bob-Stormer is offline  
Reply With Quote
Old 02-02-2010, 08:32 PM
  #171
Dirty_Vinylpusher
Thread Starter
 
Dirty_Vinylpusher's Avatar
 
Join Date: Jan 2009
Location: Close to the beach, AUSTRALIA
Posts: 3,495
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New Project

With the twist of the rear swingarm, would it be better to have the shocks angled in any certain direction?


Dirty_Vinylpusher is offline  
Reply With Quote
Old 02-02-2010, 10:53 PM
  #172
Dirty_Vinylpusher
Thread Starter
 
Dirty_Vinylpusher's Avatar
 
Join Date: Jan 2009
Location: Close to the beach, AUSTRALIA
Posts: 3,495
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New Project


Quote:
ORIGINAL: dc2 man


man my beetle is very heavy and the engine is 7.5hp plus

Dauym!
[X(]



Dirty_Vinylpusher is offline  
Reply With Quote
Old 02-03-2010, 01:45 AM
  #173
Dirty_Vinylpusher
Thread Starter
 
Dirty_Vinylpusher's Avatar
 
Join Date: Jan 2009
Location: Close to the beach, AUSTRALIA
Posts: 3,495
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New Project

Ohkay a couple of photos from this afternoon.
First time with all 4 wheels somewhat attached to the chassis.
Even though it's not supporting its own weight yet, that was a good moment!


















































Dirty_Vinylpusher is offline  
Reply With Quote
Old 02-03-2010, 04:05 PM
  #174
Bob-Stormer
 
Bob-Stormer's Avatar
 
Join Date: Apr 2005
Location: Glasgow, MT
Posts: 245
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New Project

Quote:
ORIGINAL: Dirty_Vinylpusher

With the twist of the rear swingarm, would it be better to have the shocks angled in any certain direction?

Preferably in the direction of travel. Normally, the rationale for leaning shocks is soften ride, make them more progressive, compensate heavy or light springs to suit the build. etc. a 100 pound spring, at a 45 degree angle, feels like a 50 pound spring. So it's also a tuning thing. The springs only job is to hold up the car and set ride height. Dampening is everything else.


In a perfect scenario, at full suspension extension, the spring reaches zero load at the exact same instance the suspension finishes extending. And is maximally crushed when the suspension is at maximum compression. Or there abouts. It's a trade off.
Bob-Stormer is offline  
Reply With Quote
Old 02-03-2010, 04:20 PM
  #175
Dirty_Vinylpusher
Thread Starter
 
Dirty_Vinylpusher's Avatar
 
Join Date: Jan 2009
Location: Close to the beach, AUSTRALIA
Posts: 3,495
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New Project


Quote:
ORIGINAL: Bob-Stormer

Preferably in the direction of travel.

Like this?

Attached Thumbnails
Click image for larger version

Name:	Yw67745.jpg
Views:	8
Size:	84.2 KB
ID:	1371158  
Dirty_Vinylpusher is offline  
Reply With Quote
Reply


Thread Tools
Search this Thread
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -8. The time now is 08:35 AM.