6hp XP motor fitted with a gearbox breather added, motor is allowed to breath via a hole drilled in the gearbox housing between the motor and the ali casing.
(pic courtesy of Peter Graves)
Allbright Solenoid pack mounted on a defender inner wing.
Robhybrids set up spec:
HI I have fitted a mountain bike disk brake on mine but as yet havent managed to sort a strong enough solenoid to activate the caliper.
I have also mounted the disk in a different place to stop heat transfer and here the disk spins faster giving a better braking action.
The bracket for the disc also servs a function in preventing the circlip from jumping off.
sorry the pic isnt very clear but you get the idea.
Paul Wightmans version highly modified, spec:
Slightly modified,
Bowmotor 1 24volt
Up rated brake shaft (gigglepin)
Longer drum with 2” dia centre
Oil drain and filler plugs
Disc brake on drum end
Reasons,
Bowmotor 1. Nothing to touch it! Reliable, cool running, powerful – no exaggeration of HP, easily obtainable spares and reasonable priced.
Up rated brake shaft. When an 8274 is up rated the brake shaft is the weak link, the groove where the retaining plate locates is prone to breaking. The new shaft has no groove and is located by a different method. Unreasonably priced but there is no other option! (Sorry Jim)
Oil drain and filler plugs. With changing the oil being such a pain normally no one bothers, I can change the oil with ease!
Drum mods. Smaller dia drum means higher pulling power (about 20%) but with a reduction in speed (which the 8274 can afford). Coupled with the increase in width means I can use 150’ of 11mm Dyneema and still have plenty of room to bunch the rope during side pulls.
Disc brake. This is the main reason I feel I can go back to the 8274 and feel safe lowering down steep slopes. The brake is from a moped, hydraulic, and calculations by others (if it don’t work it’s not my fault!) suggest it should be capable of holding the drum with the full weight if the vehicle on the rope. I look on is as a means of assisting the original brake under extreme conditions and a backup if the standard brake, motor or gear train should fail.
12" wide with 2"dia drum and a fancy bit on the end!
Piggy has a disc handbrake which consists of an Alfa 164 rear calliper which uses the clutch master cylinder (redundant since Piggy went auto) to adjust the pad gap using a shortened clutch pedal. I’ve fitted a tee off the pipe from the master cylinder to the calliper and run this to the winch brake calliper.
If I want to adjust the handbrake the winch brake operates, no problem.
If I want to brake the winch I am lowering down a steep slope so a bit of handbrake won’t hurt!
bracing bar to support XP motors additional weight