Ham can v.s. K&N

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I won't use a foam filter on a Commando. My '69 S came to me with a foam element in the ham can. At least it originally was foam. There was nothing but crumbs in the air box and a black goo in the carbs. I suspect it was caused by a back fire as the carb slides were "glued" with the remains of the foam. YMMV.
 
Ron L said:
I won't use a foam filter on a Commando. My '69 S came to me with a foam element in the ham can. At least it originally was foam. There was nothing but crumbs in the air box and a black goo in the carbs. I suspect it was caused by a back fire as the carb slides were "glued" with the remains of the foam. YMMV.
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I had one of those and watched it catch fire from an intake backfire. Put it out with a garden hose. My buddy's 72 burned to the ground for the same reason.
 
hopefully not stir pot but what good paper filter set-up for 34mm Mikuni kit supplied K&N? in the interest of increased flow sorta-like pill I take every day fo better peepee
 
MichaelB said:
Do you have a part number on the Pipercross?
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C1153. Designed for Weber twin chokes I believe, hence wider spacing compared to Commando.

Here are pics of the Ramair one I’m trying next, it’s physically a bit smaller overall and the spacing is much closer to a Commando...

Ham can v.s. K&N Ham can v.s. K&N
 
I bought this same Weber foam filter for use on a Aprilia RSVR with 52mm OD inlets and the holes are small allowing them to cover a much wider range of centres if the holes needed are bigger. Easy to cut out larger on one side.
 
kommando said:
I bought this same Weber foam filter for use on a Aprilia RSVR with 52mm OD inlets and the holes are small allowing them to cover a much wider range of centres if the holes needed are bigger. Easy to cut out larger on one side.
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You’re right there kommando. I did the same when I fitted mine and will do the same again when fitting the Ramair filter.

But I’m running 35mm FCRs, hence I don’t know what fitment would be like on Concentrics with velocity stacks I’m afraid baz.
 
Yeah, thanks. I'd like to see them fitted. What carbs are they going on?
 
maylar said:
waddaya want for 25 bucks lol. break out the scissors I guess.
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Ten bucks 85c for the pair!
I will try them. That restrictive-looking slot has more cross sectional area than a 28 mm port.

Need a piece of radiator hose to make them fit.
 
I thought there was further up this thread some issue with foam type filters fragmenting into small bits after much oil and heat exposure?
 
A while ago my Commando was running badly. After checking out plugs, coils, Boyer, etc, turns out I had over-oiled the K@N filter, making the engine run rich.

Stephen Hill
 
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