SOHC.co.uk Forums > CB350/400
Crash bars
billywingnut:
I'd be interested to know what members think about fitting crash bars to 400/4
Nurse Julie:
I have the proper ones fitted as supplied by Honda back in the day on my 400/4. Look great, very useful if you just have a stationary or very low speed drop as they would protect the engine and some other sticky out bits but I am fully aware that if I came off the bike at any decent speed and the bike hit the deck quite hard, the bars would bend, if not snap the engine mounting lugs and possibly the frame.
MCTID:
I recently bought a 1979 Suzuki GS750 (yes I know - but it's still a rather nice machine for being 40 years old). On stripping the 'bent' crash bars off it, I found that one of it's mounting lugs underneath the engine was snapped off. No structural damage was apparent to the rest of the bike, and it's obvious that the material used in the Crash Bar is designed to be 'sacrificed', along with the fittings being to the Frame rather than the Engine Block.
On cleaning up the Crash Bar to prepare it to have the broken lug re-welded, I was surprised how soft the steel is, but I'll be quite happy to refit it knowing that it will fail first if it has to do its job in a slow speed slide in the future (God forbid).
I would be wary of any Crash Bar which was bolted to an Engine Block, but I suppose you have to weigh up Crankcase damage which could be prohibitively expensive whereas fitting or replacing a Crash Bar might cost £100.
mattsz:
--- Quote from: Nurse Julie on November 06, 2019, 06:25:19 PM ---I have the proper ones fitted as supplied by Honda back in the day on my 400/4. Look great, very useful if you just have a stationary or very low speed drop as they would protect the engine and some other sticky out bits but I am fully aware that if I came off the bike at any decent speed and the bike hit the deck quite hard, the bars would bend, if not snap the engine mounting lugs and possibly the frame.
--- End quote ---
Got a pic handy, Julie?
Nurse Julie:
--- Quote from: mattsz on November 06, 2019, 10:15:08 PM ---
--- Quote from: Nurse Julie on November 06, 2019, 06:25:19 PM ---I have the proper ones fitted as supplied by Honda back in the day on my 400/4. Look great, very useful if you just have a stationary or very low speed drop as they would protect the engine and some other sticky out bits but I am fully aware that if I came off the bike at any decent speed and the bike hit the deck quite hard, the bars would bend, if not snap the engine mounting lugs and possibly the frame.
--- End quote ---
Got a pic handy, Julie?
--- End quote ---
You can see the fixing points on these Rickman bars. They come in 2 halves and are a complete tube pipe design, unlike what DS sells now which are only half a tube, if you get my drift
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