What Is This Doohickey On the Geico Honda 250 Forks?

Swann
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Swann
Edited Date/Time 5/26/2017 5:14pm
Does anyone know what this red anodized thingamajig is on the Geico Honda 250 forks? There's a thin braided steel cable running down the length of the fork tube, which means it is retractable. Very trick looking. Curious what it does besides look trick.





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kzizok
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kzizok 5/25/2017 9:11pm
5/25/2017 9:11pm
Sub tank?
Pat327
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Pat327 5/25/2017 9:13pm
5/25/2017 9:13pm
I'm pretty sure it's a sensor to collect suspension data.
Swann
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Swann 5/25/2017 9:17pm
5/25/2017 9:17pm
Pat327 wrote:
I'm pretty sure it's a sensor to collect suspension data.
Brilliant. So the cable measures travel, the rest gathers temperature, pressure, etc... very trick. Cable snaps, no big deal. That's some next-level F1 type sh*t. Very cool.

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Ebs
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Ebs 5/25/2017 9:21pm
5/25/2017 9:21pm Edited Date/Time 5/25/2017 9:26pm
I imagine the cable just runs down to the fork lug, retracts into the housing with suspension movement. Possibly to record compression/rebound/travel data.
Pat327
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Pat327 5/25/2017 9:25pm
5/25/2017 9:25pm
Swann wrote:
Brilliant. So the cable measures travel, the rest gathers temperature, pressure, etc... very trick. Cable snaps, no big deal. That's some next-level F1 type sh*t. Very...
Brilliant. So the cable measures travel, the rest gathers temperature, pressure, etc... very trick. Cable snaps, no big deal. That's some next-level F1 type sh*t. Very cool.
Yeah, they're used in MotoGP as well (the rod to the left of the fork tube). It's definitely cool to see data acquisition trickling into motocross.



kzizok
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kzizok 5/25/2017 9:26pm
5/25/2017 9:26pm
Interesting stuff.
GuyB
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GuyB 5/25/2017 9:50pm
5/25/2017 9:50pm
Trickling into? That's a bit that's been used for several years now, but you don't often see it at the track.
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kiwifan 5/25/2017 10:59pm
5/25/2017 10:59pm
mmmm i like the blue tubes
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bobojim 5/26/2017 12:14am
5/26/2017 12:14am
Pat327 wrote:
I'm pretty sure it's a sensor to collect suspension data.
Called a displacement transducer or DT. Been around for years, but they are getting more reliable
chase414
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chase414 5/26/2017 1:10am
5/26/2017 1:10am


Kawasaki was running one on jg different style shock Showa BFRC. Showa actually went and put mounting points in the actual body and clevis for this sensor. Pit bits pic 63
Bultaco
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Bultaco 5/26/2017 3:37am
5/26/2017 3:37am
Strictly in engineering terms, the device you are referring to is a thingamabob. Doohickeys are generally confined to engine parts.Unsure Unsure Cool Cool
DEMONDAVE
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DEMONDAVE 5/26/2017 4:11am
5/26/2017 4:11am
Connects fork leg to " factory ECU "
Steve125
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Steve125 5/26/2017 4:36am
5/26/2017 4:36am
Guys.. come on, it's a fishing line hoping to snag a factory ECU.

Developed recently in Florida.



kkawboy14
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kkawboy14 5/26/2017 6:51am
5/26/2017 6:51am
GuyB wrote:
Trickling into? That's a bit that's been used for several years now, but you don't often see it at the track.
How come you haven't posted up pictures about it....years ago?
ML512
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ML512 5/26/2017 7:16am
5/26/2017 7:16am
GuyB wrote:
Trickling into? That's a bit that's been used for several years now, but you don't often see it at the track.
kkawboy14 wrote:
How come you haven't posted up pictures about it....years ago?
We've posted it in Pit Bits multiple times, I know personally I've posted it at least once a year for the past three seasons.

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IWreckALot
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IWreckALot 5/26/2017 7:21am
5/26/2017 7:21am
GuyB wrote:
Trickling into? That's a bit that's been used for several years now, but you don't often see it at the track.
So out of curiosity, why wouldn't they use them at the track? They say it's impossible to replicate certain race dynamics at a practice track, so why not collect the data where it matters most? Especially if the guys are practicing on more groomed tracks than the nationals get to.
spd721
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spd721 5/26/2017 7:22am
5/26/2017 7:22am
I wonder how often that steel cable breaks from getting hit with roost and rocks.
tornliverluke 5/26/2017 7:35am
5/26/2017 7:35am
Bultaco wrote:
Strictly in engineering terms, the device you are referring to is a thingamabob. Doohickeys are generally confined to engine parts.Unsure Unsure Cool Cool
Ive always referred to suspension components as whatchamacallits. Is that term correct or am I way off?
Bolt-On
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Bolt-On 5/26/2017 8:26am
5/26/2017 8:26am
Obviously its a horn for when they add on lights and go dual sporting. DUH.
Bultaco
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Bultaco 5/26/2017 8:26am
5/26/2017 8:26am
tornliverluke wrote:
Ive always referred to suspension components as whatchamacallits. Is that term correct or am I way off?
I think you are correct about whatchamacallits, but only south of the Mason Dixon line after the Spring Equinox during the unpainted turtle migration. But I could be mistaken.
chad_111
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chad_111 5/26/2017 8:53am
5/26/2017 8:53am
GuyB wrote:
Trickling into? That's a bit that's been used for several years now, but you don't often see it at the track.
IWreckALot wrote:
So out of curiosity, why wouldn't they use them at the track? They say it's impossible to replicate certain race dynamics at a practice track, so...
So out of curiosity, why wouldn't they use them at the track? They say it's impossible to replicate certain race dynamics at a practice track, so why not collect the data where it matters most? Especially if the guys are practicing on more groomed tracks than the nationals get to.
Maybe theyre worried about unforeseen complications if they break. Remember Roczen's forks last year at glen helen? I know it was a bit different scenario, but still the result of running data acquisition during a moto.
imissrc
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imissrc 5/26/2017 9:27am
5/26/2017 9:27am
its a string potentiometer, a transducer used to detect and measure linear position and velocity using a flexible cable and spring-loaded spool.
Brownstone322 5/26/2017 10:26am
5/26/2017 10:26am
Pat327 wrote:
I'm pretty sure it's a sensor to collect suspension data.
I think you're right. Remember last year when one of those things failed on Rozcen's Suzuki at Glen Helen and he lost all his fork dampening? Whoops.
kkawboy14
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kkawboy14 5/26/2017 10:54am
5/26/2017 10:54am
GuyB wrote:
Trickling into? That's a bit that's been used for several years now, but you don't often see it at the track.
kkawboy14 wrote:
How come you haven't posted up pictures about it....years ago?
ML512 wrote:
We've posted it in Pit Bits multiple times, I know personally I've posted it at least once a year for the past three seasons.
Wow I don't remember ever seeing those! Good job!
Silliker269
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Silliker269 5/26/2017 10:58am
5/26/2017 10:58am Edited Date/Time 5/26/2017 10:59am
You should know what it is
avidchimp
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avidchimp 5/26/2017 11:05am
5/26/2017 11:05am
Brownstone322 wrote:
I think you're right. Remember last year when one of those things failed on Rozcen's Suzuki at Glen Helen and he lost all his fork dampening...
I think you're right. Remember last year when one of those things failed on Rozcen's Suzuki at Glen Helen and he lost all his fork dampening? Whoops.
The part that failed on Kenny's bike was an added valve meant to regulate air pressure build-up in the fork.
RoflCopter726 5/26/2017 11:05am
5/26/2017 11:05am
Pat327 wrote:
I'm pretty sure it's a sensor to collect suspension data.
Brownstone322 wrote:
I think you're right. Remember last year when one of those things failed on Rozcen's Suzuki at Glen Helen and he lost all his fork dampening...
I think you're right. Remember last year when one of those things failed on Rozcen's Suzuki at Glen Helen and he lost all his fork dampening? Whoops.
This device only connects to the triple clamp and fork lug externally, it shouldn't affect the way the fork works in any way regardless if it fails or not. Wasn't Kenny's failure due to internal parts or parts that connected to the fork caps?

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