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Crash Box?
- Thread starter chewiekw
- Start date
MOBILEMERCMAN
Founding Member / Competitor
Crash boxes have been around a long time. They are simple, light and dependable.
skaterdave
New member
it's a in-and-out tranmission. no gear reduction change.
use the starter to bump the motor over and at the same time push the shifter in to foward, neutral or reverse. this obvious is done with the motors off. once in gear (forward,neutral, reverse) you start up the motor and go. to switch direction, you have to turn off the motor and switch
use the starter to bump the motor over and at the same time push the shifter in to foward, neutral or reverse. this obvious is done with the motors off. once in gear (forward,neutral, reverse) you start up the motor and go. to switch direction, you have to turn off the motor and switch
shifter
Charter Member
Crash boxes are gearboxes. Borg Warner/Huber/Bam transmissions are gearboxes.
Crash boxes use a dog clutch or a spline engagement. It is possible to engage while the engine is running (not recommended)
BW/H/B transmissions use a clutch pack to engage a planetary for Forward and Reverse.
Most crashboxes (Daytona/Kiekaffer/SCS) are on center input output , no ratio in forward but ratio in reverse.
Ours crashboxes run Gears to give a ratio, rotation change and also multiple ratios forward or reverse and sometimes offset. We use a clutch to make the crashbox into a transmission. pneumatic over hydraulic or just pneumatic.
pat W:sifone:
Crash boxes use a dog clutch or a spline engagement. It is possible to engage while the engine is running (not recommended)
BW/H/B transmissions use a clutch pack to engage a planetary for Forward and Reverse.
Most crashboxes (Daytona/Kiekaffer/SCS) are on center input output , no ratio in forward but ratio in reverse.
Ours crashboxes run Gears to give a ratio, rotation change and also multiple ratios forward or reverse and sometimes offset. We use a clutch to make the crashbox into a transmission. pneumatic over hydraulic or just pneumatic.
pat W:sifone:
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Buoy
Founding Member
Showoff!!
Very nice stuff!!:sifone:
Damn I wish I could play with the big boys.
Great stuff!!
bluellama
New member
I'm not even going to think I know a tenth of what Shifter knows, but this might give you a bit more clarity.
If you think in terms of an auto or truck anaolgy, the crash box is a manual transmission and the others are an automatic transmission. The manual has no clutch or synchronization. It operates on gears directly meshed together. The automatic has a clutch pack inside that relies on hydraulic pressure to force it closed to keep the engagement. The manual only stops working when the absolute maximum torque loads break the gears or cause fatigue to a point where they fail. On the other side, the automatic's engagement clutch will slip at some point. And each time it slips it creates friction that wears the clutch and raises the oil temp. The more it slips, the more it wears and the easier it is to slip. Pretty soon, your engagement is lost.
If you think in terms of an auto or truck anaolgy, the crash box is a manual transmission and the others are an automatic transmission. The manual has no clutch or synchronization. It operates on gears directly meshed together. The automatic has a clutch pack inside that relies on hydraulic pressure to force it closed to keep the engagement. The manual only stops working when the absolute maximum torque loads break the gears or cause fatigue to a point where they fail. On the other side, the automatic's engagement clutch will slip at some point. And each time it slips it creates friction that wears the clutch and raises the oil temp. The more it slips, the more it wears and the easier it is to slip. Pretty soon, your engagement is lost.
Jesse James
New member
hey shifter what boat is the quad engine you have in your picture?...... sorry for the hi-jack
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