wishbone, shock, brake, and wheel spindol problems

[SNIPE]

i was designing in LEGO digital designer before buying the parts and building it in real life and it was going well but now i have problems

the suspension i originally used was a linear actuator but since this is so long wide and tall i have to mount it from the top wishbone mount to the frame next the diff (the wishbones are half the length of this actuator after doing that i knew there would be no pivot point of compression ,so the shock will never compress so i added diagonal mounts which went back into the corner of the bottom wishbone but that that would not do anything either so the shock wouldn't work

i then tried to typically mount the shock diagonally (from bottom wishbone to top wishbone or from one wishbone to a mount so the shock compresses but the actuator didn't fit and the other ones were too short, can somebody give me an image of a shock that would fit (i need room for the axle to go through also since its an AWD (all wheel drive) vehicle unless i mount the shock outside of the wishbones instead of inside of the gap area of them.

[DLuders]

@ SNIPE: If you want to use a 731c04 6.5L Shock Absorber (first picture below), you can download Tore M's LDD file here and import the shock absorber to your digital model.

If you want to use the 48912c01 11.5L Shock Absorber (2nd picture below), you can download marco9999's equivalent LDD assembly here.

If you want to use the 2909c02 9.5L Shock Absorber (3rd picture below), you could use LDD Master Zblj's equivalent on his "Bike with All Wheel Drive" (Brickshelf folder). There are two of them on the front fork.

Edited April 3, 2011 by DLuders

[SNIPE]

@ SNIPE: If you want to use a 731c04 6.5L Shock Absorber (first picture below), you can download Tore M's LDD file here and import the shock absorber to your digital model.

If you want to use the 48912c01 11.5L Shock Absorber (2nd picture below), you can download marco9999's equivalent LDD assembly here.

If you want to use the 2909c02 9.5L Shock Absorber (3rd picture below), you could use LDD Master Zblj's equivalent on his "Bike with All Wheel Drive" (Brickshelf folder). There are two of them on the front fork.

the first image the. shock is too short and the ssecond image is too wide and i havmt tried the third image yet because the one in LDD is compresed and therefore too short

[DLuders]

You can make your own, custom-length Lego Technic "shock absorber" by combining the following parts.

You could use the 53586 "Technic, Axle and Pin Connector Perpendicular with Extension" (pictured below). A Technic Axle is able to SLIDE inside the long tube to give a custom length. I checked the LDD 4.0 LU Mode parts pallette, and it piece is available. The 53586 part is known as "Fric. element, cylinder" near the bottom of the Technic Pins group.

Place a 32013 "Technic, Axle and Pin Connector Angled #1" on the other end of the Technic Axle, and voila! You now have a Technic Shock Absorber that can be adjusted up and down to fit.

[SNIPE]

You can make your own, custom-length Lego Technic "shock absorber" by combining the following parts.

You could use the 53586 "Technic, Axle and Pin Connector Perpendicular with Extension" (pictured below). A Technic Axle is able to SLIDE inside the long tube to give a custom length. I checked the LDD 4.0 LU Mode parts pallette, and it piece is available. The 53586 part is known as "Fric. element, cylinder" near the bottom of the Technic Pins group.

Place a 32013 "Technic, Axle and Pin Connector Angled #1" on the other end of the Technic Axle, and voila! You now have a Technic Shock Absorber that can be adjusted up and down to fit.

i was actually thinking the same thing too , i have the cymenders from the lego city green dump truck set, id need to buy a lego spring from a lego shock assembly (just the spring), any ideas where i can find one?

the air would escape from the parts shown and so would fluid so it will have to be mechanical (as in spring)

Edited April 4, 2011 by SNIPE

[DLuders]

@ SNIPE: You can select either the "soft" or "hard" spring of the proper length on Bricklink.com . I used Bricklink's Catalog function and did a search for the term "spring". You could probably find springs at your local hardware store too, take one out of a ballpoint pen, etc.

[SNIPE]

@ SNIPE: You can select either the "soft" or "hard" spring of the proper length on Bricklink.com . I used Bricklink's Catalog function and did a search for the term "spring". You could probably find springs at your local hardware store too, take one out of a ballpoint pen, etc.

whats the smallest lego axle you can get get that has threads on it?

i could use the threads to adjust the spring rate.

[allanp]

I think that would be a 4l axle, two of which are found in the control centre 1 set. There are also a couple of sets with a 10l threaded axle.

BTW would it not be feasable to mount the shocks horizontally, like the silver champion. This way you would have more shocks available to you, like the 48912c01 which has built in spring, shock aborber and adjustment for spring length and stiffness.

Edited April 4, 2011 by allanp

[SNIPE]

I think that would be a 4l axle, two of which are found in the control centre 1 set. There are also a couple of sets with a 10l threaded axle.

BTW would it not be feasable to mount the shocks horizontally, like the silver champion. This way you would have more shocks available to you, like the 48912c01 which has built in spring, shock aborber and adjustment for spring length and stiffness.

i dont get that statement, 'not feasible' means its not a good idea but then you said i would have more shocks availible etc if i did this, so will i do it or not?

i attached a few shocks to the wishbones, some worked ,some did not but even if they did work the wishbones were moving up when compressed which means the floor etc hitting off the ground i moved it by hand so that the wishbones were diagonally angled so there was a gap and flipped the assembly upside down so the wishbones went up when it hit a bump but the spindle was diagonal therefore so would the wheel be, and also the shock was compressed when it was in the normal position (like on a flat surface)

i tried making a custom which without a spring, it worked great but still the wishbones were moving wrongly.

so i was thinking about using a similar idea here but modifying the assembly so there is a diff on the front and back and still have steering on the front

the model in the link has all 4 wheel suspension. and i can try and modify it again , but making it stronger

this way is like you were saying i think.

Edited April 4, 2011 by SNIPE

[allanp]

Sorry, I forgot the question mark. I was asking the question would it not be feasable to you to have a setup similar to the silver champion? This would mean that the shocks are NOT mounted within the wishbones. Instead they wound be mounted horizontally, and lengthways inside the car, above the differencials, like this:

http://bricks.argz.com/ins/8458-1/22

[SNIPE]

Sorry, I forgot the question mark. I was asking the question would it not be feasable to you to have a setup similar to the silver champion? This would mean that the shocks are NOT mounted within the wishbones. Instead they wound be mounted horizontally, and lengthways inside the car, above the differencials, like this:

http://bricks.argz.com/ins/8458-1/22

yes, i would like to do it that way, i can just make 2 rear units and make one so the wheels can turn since i need 4 wheel drive

i will see which mech is better out of the silver champion, the williams f1 car or the ferrari f1 1:8 car (the one with suspension)

how would i go about getting all wheel drive? i have a diff i made myself that has 6 internal gears and can have another 2 outer gears (the 6 gears are housed) that i can use for the front and back

Edited April 5, 2011 by SNIPE

[allanp]

Whilst I like the working pricipal of the silver champion, I felt it's design was a bit weak. Mine never broke but if I were you i'de design a new stronger version of the same pricipal.

All wheel drive (AWD) means (I think) permenant 4 wheel drive. This means you should link the front a rear drive shafts with a third, centre diff, like the 8880 or 8466. This means that all four wheels will be powered but allowed to turn a different speeds as required in a corner and if three of the four wheels are prevented from turning, all the power will be sent to the forth wheel.