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07-10-2005, 11:53 PM
| #1 |
| Im Brandon   Join Date: Feb 2005 Location: Colfax, CA
Posts: 8,156
|  My first real crawler!! *bulu 2*
I got my chassis saturday Worked on it all day today and here it is! It still needs some tweaking on the suspension, I decided to go with a 3 link that works very well and doesnt sway at all because of the shocks I used. Now I just need to lower it alittle and find some stiffer springs, I might try to limit articulation as well. Heres a quick shot. I will post more as I make progress   |
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07-11-2005, 12:54 AM
| #2 |
| Quarry Creeper Join Date: May 2004 Location: Hartford, Connecticut
Posts: 355
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Nluv, your first crawler should be a good one! Those Bulus do insane stuff in some vids posted here. Is there triangulation in the lower links? How long are the shocks? Might want to go shorter on those to drop it a touch, but otherwise it looks good!
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07-11-2005, 01:10 AM
| #3 |
| Rock Stacker Join Date: Jun 2005 Location: Indian's Cupboard
Posts: 91
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Just curious, how much wheelbase do you have? :o
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07-11-2005, 02:24 AM
| #4 |
| I wanna be Dave Join Date: Jun 2005 Location: KENNEWICK, WA
Posts: 2,513
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I wish my BULU2 would get here soon,  I was messing around with my buddy's TLT contraption saturday and it was a blast.  He made his crawler back in the day so it looks kinda odd like it wouldn't be able to do much but it performs realy good.
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07-11-2005, 08:57 AM
| #5 | |
| Im Brandon Join Date: Feb 2005 Location: Colfax, CA
Posts: 8,156
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07-11-2005, 09:31 AM
| #6 |
| I wanna be Dave  Join Date: Mar 2004 Location: The Haunted Forest
Posts: 3,586
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Nice truck! In case you dont know, the upper links are supposed to attach to the holes right above the lower link holes. This will provide a flat link layout and a place for your battery to go. Although, since you're running a single non-triangulated upper link, it might be more difficult to get the pack to stay up there. Have fun with you new crawler! Ryan |
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07-11-2005, 10:15 AM
| #7 |
| I wanna be Dave Join Date: Aug 2004 Location: san jose
Posts: 2,061
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it look like his wheelbase is about 13. i think he should only three link the back this thing work so much better with the batt. on front links my 2 cent
Last edited by 1beatjeep; 07-11-2005 at 10:17 AM. |
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07-11-2005, 10:30 AM
| #8 | |
| I wanna be Dave Join Date: Jun 2004 Location: San Jose
Posts: 5,207
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07-11-2005, 11:01 AM
| #9 |
| Im Brandon Join Date: Feb 2005 Location: Colfax, CA
Posts: 8,156
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I would 4 link it, but I was having the hardest time getting a 4 link setup to work, it was very frustrating!! Thats why I finally gave up and used the 3 link :( I might be using a 1100 mah 2/3A 6 cell pack as a battery so I might not need too much room anyways. Not sure yet all that stuff still needs to be worked out and tested |
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07-12-2005, 02:32 PM
| #10 |
| I wanna be Dave Join Date: Jun 2005 Location: KENNEWICK, WA
Posts: 2,513
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Ok you've had a couple days to do more updates lets see them. If you havn't done anything atleast post some more pictures or something.
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07-12-2005, 04:04 PM
| #11 |
| I wanna be Dave Join Date: Mar 2004 Location: The Haunted Forest
Posts: 3,586
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You had a hard time getting the 4 link to work? How? Make 2 equal length links (Or use turnbuckles) Attach them on each side of that TLT part above the servo where your '3 link' is attached, and then the other ends to the holes right above the lower link holes on the Bulu. RYan |
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07-13-2005, 08:10 AM
| #12 |
| Im Brandon Join Date: Feb 2005 Location: Colfax, CA
Posts: 8,156
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Yup and im still having trouble, I dont know what the problem is but when I attach the 4 link it does not want to articulate. All it wants to do is sway left to right... And if I force it to articulate it wont, unless the mount abouve the servo is able to twist, then it just twist the mount and articulates. Its very annoying, I cant figure out why it wont work... I even copied another members setup which was easy because we have almost identical top link mounts, and it didnt work again, same problem. Something has to be binding but I can figure out what... Any help would be appreciated. Thanks |
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07-13-2005, 03:33 PM
| #13 |
| Quarry Creeper Join Date: May 2005 Location: Auburn
Posts: 360
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odd very odd. How are those shocks mounted?? the tops look hard bolted on this might be limiting you. As well where and how everything on the axle is mounted affects stuff too. as well are you mounting those upper links in the same location as your single?? Try those holes down near the lower links. If this all fails what is your expectations of articulation?? The sway you mentioned shouldnt happen with a triangled set up on the top links. Usualy a 3 link will sway more. I tired a 3 link and tossed it in favor of the 4link ( that and my battery likes me more for it) |
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07-13-2005, 03:50 PM
| #14 |
| I wanna be Dave Join Date: Mar 2004 Location: The Haunted Forest
Posts: 3,586
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If you were to post pictures of the malfunctioning 4-link installed, we could probably help out a bit.
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07-13-2005, 07:01 PM
| #15 |
| Im Brandon Join Date: Feb 2005 Location: Colfax, CA
Posts: 8,156
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I would really appreciate that, I cant believe im having this much trouble with this anyways :( Well I took the shocks off to keep the pics clear, Just stuck a bolt through the top link, and i know the angle of the axle is incorrect, but it was in the middle of another change and I just want to get these pics up, let me know what you see..     Max Artic!! What is binding ???  In these two pics you see the mount on the top twisting to allow for articulation, I took one of the screws out to allow it to do that just for testing and curiousity (thinking that was causing the binding but its not..)  My only other idea right now is that the links are too close to the chassis, im going to put some washers in there, but then I will loose some triangulation. Any help is appreciated. Thanks! Brandon  |
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07-13-2005, 07:43 PM
| #16 |
| owner, Holmes Hobbies LLC   Join Date: Nov 2004 Location: Volt up! Gear down!
Posts: 20,290
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in your very first pic, the shocks are shimmed so they are rigid on one plane like struts, effectivly making them struts. that is one reason why a three link works best for you. the path that your shocks and the path that your 4 link want to take dont mesh. also, the trouble that you are having is because of the angle of the ballends at the chassis. space out your bottom links at the chassis a bit, some cone washers would look nice and give clearance. good job on the lower link mounts at the axle btw. thats the best way that i have seen or used IMO. |
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07-13-2005, 07:44 PM
| #17 | |
| I wanna be Dave Join Date: Jun 2005 Location: KENNEWICK, WA
Posts: 2,513
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07-13-2005, 08:36 PM
| #18 | |
| Im Brandon Join Date: Feb 2005 Location: Colfax, CA
Posts: 8,156
| Quote:
You are right about the spacer, I saw some pics as well and tried it, got about another 5* or artic, but thats it... Nothin wants to work, I have tried maybe 10 different setups now... I think I might go back to my 3 link and make that work... (It was just way way too "floppy" and loose for lack of better term)  It actually articulated LOL I cant believe how many hours I have into this now all I can do is laugh
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07-13-2005, 08:36 PM
| #19 | |
| Im Brandon Join Date: Feb 2005 Location: Colfax, CA
Posts: 8,156
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07-13-2005, 09:04 PM
| #20 |
| Im Brandon Join Date: Feb 2005 Location: Colfax, CA
Posts: 8,156
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Maybe some more info for help: When I take off one of the top links it moves and articulates fine.    Sorry about all the pics, just need opinions on what to do |
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