identify reverse gear unit

[johnD]

Hi all.
Just picked up an fjr1300 trike, nice build and comes with a reverse gear unit mounted on the back axle. Trouble is, it is very difficult to re engage forward gear after putting into reverse.
Need some info on the unit as to manufacture or possible cause of the baulking.
Can't find anything online, dosen't look homemade, if it is, its a work of art!
Anyone shed any light?
Cheers.

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[ratwing]

If it goes into first but doesn't go forwards then it sounds like adjustment (or maybe wear), does it disengage reverse/engage forward properly if you use a tyre lever or screwdriver to move the splined bit across as far as it'll go when you move the reverse lever?
Maybe there's grit in the grease preventing it moving like it should?

[johnD]

Hi ratwing, thanks for the reply. Maybe I should clearify a little.
The sliding mechanism is operated by a 'shift fork' very much like that in a gearbox. This is operated by a bar on a lever at the right hand side of the chasis. (You can see the bar to the right of the oblong alloy box).
This moves the reversing cylinder over to the cogs on the right of the unit. That engages reverse but I'm not sure what the inner working of the unit can be. It engages reverse quite smoothly, but operating it to push back to the forward position is very hit or miss. I do agree that it seems to be 'clogged up' but I'm a bit loathe to strip the whole back axle to inspect.
It would be nice to know what, exactly, this unit is, home made or shop bought.
Cheers,

[Deep Diver]

Start off with the lever, remove the bolt where it bolts to the alloy block and check it moves free. Then check the alloy block pin to see if that's stiff to move. Then check the diff ring assembly.