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Bionic trucks

Posted: Fri Jan 31, 2014 4:26 pm
by Benobeone
Hi all, hopefully you can help me out.
I recenty bought a second hand board. When it arrived I discovered that the trucks were very different to the matrixs I have always used. I think they may be Gi bionics, However they have
A top hanger but no springs. Are they a kind of vector hub? They dont look like the mbs vectors. Im sorry there are no pictures I will add some when next im with my board.

Posted: Fri Jan 31, 2014 4:31 pm
by McCarver
Is the hanger plastic or metal?

Posted: Fri Jan 31, 2014 5:02 pm
by Benobeone
Plastic thanks

Posted: Fri Jan 31, 2014 5:08 pm
by Benobeone
McCarver wrote:Is the hanger plastic or metal?


They are plastic
sorry about double post

Posted: Fri Jan 31, 2014 5:27 pm
by Benobeone
Here is a picture

Posted: Sat Feb 01, 2014 11:07 am
by Benobeone
Hi

They are definitely torsion bionics. Can someone let me in on how I should maintain them as they are totally new to me as I have always used matrix. At the moment the trucks seem a little loose and I can freely pivot the axels with my hand.

Posted: Sat Feb 01, 2014 12:04 pm
by BgSurfer
Yep. Those are GI Bionics that use torsion cubes for truck tension/responsiveness. The cubes are made with elastomers. GI made torsion cubes with several different levels of stiffness/hardness.

If your axles have a lot of play, either the cubes are one of the softest GI made or the cubes have worn out. Unfortunately, I don't believe there is anywhere that you could buy new ones since GI went out of business.

When GI was about to go out of business, DirtDave allowed me to try a set of GI Bionics with no obligation to buy. I tried a range of soft to medium-soft torsion cubes but, they just did not give the feel I wanted. So I stuck with MBS Matrix trucks and egg shocks. I have played with the Trampa dampas in MBS Matrix trucks -- still experimenting though.

This is a photo of the torsion cube Bionics test rig I put together: MBS Comp 95 deck with "flipped" GI torsion cube Bionics:

Image

Posted: Sat Feb 01, 2014 12:43 pm
by McCarver
Atleast they are the newer ones so they are pretty decent. do they have just a little bit of jiggle or are they super soft?

Posted: Sat Feb 01, 2014 5:08 pm
by Benobeone
BgSurfer wrote:Yep. Those are GI Bionics that use torsion cubes for truck tension/responsiveness. The cubes are made with elastomers. GI made torsion cubes with several different levels of stiffness/hardness.

If your axles have a lot of play, either the cubes are one of the softest GI made or the cubes have worn out. Unfortunately, I don't believe there is anywhere that you could buy new ones since GI went out of business.

When GI was about to go out of business, DirtDave allowed me to try a set of GI Bionics with no obligation to buy. I tried a range of soft to medium-soft torsion cubes but, they just did not give the feel I wanted. So I stuck with MBS Matrix trucks and egg shocks. I have played with the Trampa dampas in MBS Matrix trucks -- still experimenting though.

This is a photo of the torsion cube Bionics test rig I put together: MBS Comp 95 deck with "flipped" GI torsion cube Bionics:

Image


McCarver wrote:Atleast they are the newer ones so they are pretty decent. do they have just a little bit of jiggle or are they super soft?


Thanks Guys

Unfortunately I have yet to ride them as my friend drove away with my pump ( can't wait to get it back tomorrow). its a shame they have become defunct as they seem very light and I was looking forward to experimenting with them on my free style board.

The cubes are yellow, can anyone tell me what hardness these should be?

The set up seems a bit odd to me. the trucks came with Tramper hyper hubs. While going over the board I have discovered that these hubs seem too small or perhaps he truck is missing something. The wheel sits several mm under the last thread, meaning that I can do the nut up all the way and it will not restrain the bearing. am I missing a spacer? or are these trucks simply not compatible with Trampa hubs? The truck also has a larger thread behind the where the wheel sits (see picture), what is its purpose? is it for a break set?


The jiggle seems to be down to the king pin being loose, I gave them a bit of a tighten but was unsure of the results as I currently can't ride the board.
How tight should I do up the king pin through the hanger, should it be done up like a wheel?

Lastly (sorry), I found these T3 HD3 cubes on amazon.

http://www.amazon.co.uk/Ground-Industries-Bonded-Bionic-Trucks/dp/B00413DJFU/ref=sr_1_3?ie=UTF8&qid=1391294201&sr=8-3&keywords=ground+industries

They state they are soft ride. Would they be any good for a free style board? or are they more carve orientated. I have always felt that a stiffer truck were better for freestyle but that may well just be me.

Thanks for the help

Posted: Sun Feb 02, 2014 10:32 am
by BgSurfer
If the axle length is only a few mm too long, you could use some washers/spacers between the axle nut and wheel hub to snug things up a bit.

If you look in the picture I posted, the older model torsion Bionics had gold colored aluminum spacers to keep wheels from sliding back and forth. MBS All Terrain Skate truck axles use similar aluminum spacers.

Quick general answer:

soft = responsive, tight carving
hard = less responive, more stable for speed

This is a link to the thread reviewing my test torsion Bionics setup:

http://www.surfingdirt.com/forum/showthread.php?t=5423


~~~~~

Posted: Sun Feb 02, 2014 4:25 pm
by Benobeone
BgSurfer wrote:If the axle length is only a few mm too long, you could use some washers/spacers between the axle nut and wheel hub to snug things up a bit.

If you look in the picture I posted, the older model torsion Bionics had gold colored aluminum spacers to keep wheels from sliding back and forth. MBS All Terrain Skate truck axles use similar aluminum spacers.

Quick general answer:

soft = responsive, tight carving
hard = less responive, more stable for speed

This is a link to the thread reviewing my test torsion Bionics setup:

http://www.surfingdirt.com/forum/showthread.php?t=5423


~~~~~


Great many thanks, I found your review very helpful. I took these trucks out for a spin today nice and Tight I found they were grey for freestyle and park work giving me a really crisp, sharp movement that I could use to really throw my board around. because of this I found them a bit sketchy on the faster longer runs especially when coming into fast turns and power slides, feel really different to matrix trucks.