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Scale 4x2 and Buggy R/C vehicles This is the place to put your Sand Scorchers, Bajas and other various 2wd offroad R/C's


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  #106  
Old 06-17-2010, 02:57 PM
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Well, right now it weight 2,1 kg (incl. battery pack). With 4 shocks and 4 coils the but come up easy. You can see it on the video. I dont know if two coils will be enough to do same. Problem is, the dual shocks do not really have damping function like other oil filled shocks with larger body. So they rear feels a bit bouncy and I am also afraid that, with two coils only the but will hit the ground to easely.
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  #107  
Old 06-17-2010, 03:12 PM
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Ah, ok. I think having 2 shocks with springs and 2 shocks without springs would be good for the end.
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  #108  
Old 06-17-2010, 03:30 PM
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At last I hope so. If not, I might try to use 4 coils and some small amount of sticky grease inside of two shocks. Maybe this will provide enough friction to do some kind of damping.
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  #109  
Old 06-19-2010, 09:41 AM
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Got another thing done tonight...rear shock towers. Now she can stand on her own feet
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As I have been asked to make a video, here it is. It is just a very simple video showing how the suspension works. Nothing special.

http://www.youtube.com/watch?v=QTpg6GnpoU4

oh my God

you are a genius
this Sandrail is very beautiful...

some questions:
wich material you use to braze?
is it castolin?


and...can I copy You?
ovviously not, but I'm very impressed by your work
This Buggy is very Scale looking
i wish I will become able like you to build...
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  #110  
Old 06-19-2010, 12:27 PM
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Thanks alot Banana for the compliment but, I am really no genius. I am just an average model builder with average skills of modeling.

I am not brazing, I am welding. I use a standard electric welding device with 2mm electrode. Similar like that one:



I'd like to be able to braze because the seams are nicer when brazing. But I do not know much about brazing, so I am welding. At last I know a little about it. I have some welding experience since I welded alot on a 79' Chevy Blazer which I restored 2007 and I made a roofrack for my Jeep Cherokee two years ago.

Sure you can copy it, why not. I did nothing special. Buy yourself a welding device and start testing. You'll see it is not so difficult. But I am happy you like my work.
I hope it will really looking quite scale. Actually this is what I want.

By the way. Within July/August I'll get my rack and pinion steering built. Hope it will look good.
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  #111  
Old 06-19-2010, 12:34 PM
talon talon is offline
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for your shock issue, you could experiment with different springs and shock oil wieghts.

if your ''too bouncy'' a softer spring in at least one shock in the rear would help out greatly.
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  #112  
Old 06-19-2010, 12:41 PM
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for your shock issue, you could experiment with different springs and shock oil wieghts.

if your ''too bouncy'' a softer spring in at least one shock in the rear would help out greatly.
good point with the softer spring, I'll give it a try. Also I'll try to use a #600 tamiya shock oil and see if this prevent a little from bouncing.
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  #113  
Old 06-19-2010, 01:27 PM
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Ha! It works. I just used tamiya #700 shock oil and filled all four shocks. I always thought these shocks cannot be filled with oil, but I was wrong. They can be filled and they work good. Only thing, they cannot be filled until the top, they need some 7mm oil free room to the top. Now the rear is not bouncy any more.
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  #114  
Old 06-19-2010, 04:44 PM
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All right, I have been welding once again. This time the front end got some additional support. And some comparison pictures from the real thing.
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  #115  
Old 06-19-2010, 06:56 PM
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Awesome mister
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  #116  
Old 06-20-2010, 02:03 AM
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agree!!
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  #117  
Old 06-20-2010, 07:44 AM
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Originally Posted by ThomasR View Post
Thanks alot Banana for the compliment but, I am really no genius. I am just an average model builder with average skills of modeling.

I am not brazing, I am welding. I use a standard electric welding device with 2mm electrode. Similar like that one:



I'd like to be able to braze because the seams are nicer when brazing. But I do not know much about brazing, so I am welding. At last I know a little about it. I have some welding experience since I welded alot on a 79' Chevy Blazer which I restored 2007 and I made a roofrack for my Jeep Cherokee two years ago.

Sure you can copy it, why not. I did nothing special. Buy yourself a welding device and start testing. You'll see it is not so difficult. But I am happy you like my work.
I hope it will really looking quite scale. Actually this is what I want.

By the way. Within July/August I'll get my rack and pinion steering built. Hope it will look good.
oh, Ok
I have an electric welder, but I must Find small electrodes...mine are now 4mm :-(
i'm Able with Brazing, about 3-4months it's very Easy with Castolin Sticks ;-)

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good point with the softer spring, I'll give it a try. Also I'll try to use a #600 tamiya shock oil and see if this prevent a little from bouncing.
you can also use Associated RC18T springs Blue on the top of the shocks...they are very soft ;-)
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  #118  
Old 06-20-2010, 09:11 AM
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What equipment are you using for brazing? Could you make a picture of it?

For welding, 2mm rods are more than enough.

I solved the matter with the bouncy rear end. I used a Tamiya #700 shock oil in all 4 shocks, that works great.
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  #119  
Old 06-20-2010, 09:20 AM
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Welded a front cross member with shock stay and made some progress on the V8 engine. Now missing only motor mounts and custom headers. Motor fits very tight into the engine compartment.
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  #120  
Old 06-20-2010, 10:44 AM
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What equipment are you using for brazing? Could you make a picture of it?

For welding, 2mm rods are more than enough.

I solved the matter with the bouncy rear end. I used a Tamiya #700 shock oil in all 4 shocks, that works great.
I use a torch with two separated acetylene and oxygen cylinders
I'ts an expensive equipment, but my father is a plumber (in Italian we call it "Idraulico", but I don't know the exactly translation ) and He uses them for working
there are more cheaper torches, like Castolin ones

for brazing there are a lot of Castolin sticks type, from smaller to bigger ;-)

Sorry for my english ...i wish you can understand...
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