rickntheo
Full Member
The older I get the faster I was.
Posts: 215
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Post by rickntheo on Aug 23, 2018 20:29:43 GMT
My Guzzi Cali went tonight so my black 400 has become my only bike on the road.
Now I'm 6ft and 16+ stone, so all things considered (coefficient of fatness and drag) what top speed should be achievable
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Post by Somersetdreamer on Aug 23, 2018 20:48:30 GMT
100 mph I reckon
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Post by bodie on Aug 23, 2018 20:59:04 GMT
Rich I think that's a bit optimistic only 103 flat on the tank with a small Japanese test rider on a brand new bike  |
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Post by Somersetdreamer on Aug 23, 2018 21:04:29 GMT
I've never ridden a SD 400, I used to own the Suzuki GSX 400 & that would hold just over 100mph
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terryc
Forum Accommodation Specialist 
I'll put you up ,plenty of room in my box
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Post by terryc on Aug 24, 2018 10:08:24 GMT
Rich I think that's a bit optimistic only 103 flat on the tank with a small Japanese test rider on a brand new bike <iframe style="position: absolute; width: 2.62px; height: 1.64px; z-index: -9999; border-style: none; left: 761px; top: 69px;" id="MoatPxIOPT0_18729549" scrolling="no" width="2.6200000000000045" height="1.6400000000000006"></iframe> <iframe style="position: absolute; width: 2.62px; height: 1.64px; z-index: -9999; border-style: none; left: 839px; top: 69px;" id="MoatPxIOPT0_99652935" scrolling="no" width="2.6200000000000045" height="1.6400000000000006"></iframe> <iframe style="position: absolute; width: 2.62px; height: 1.64px; z-index: -9999; border-style: none; left: 761px; top: 99px;" id="MoatPxIOPT0_34988783" scrolling="no" width="2.6200000000000045" height="1.6400000000000006"></iframe> <iframe style="position: absolute; width: 2.62px; height: 1.64px; z-index: -9999; border-style: none; left: 839px; top: 99px;" id="MoatPxIOPT0_19612506" scrolling="no" width="2.6200000000000045" height="1.6400000000000006"></iframe> Our former forum leader posted a video on the old forum showing the needle pass the 100mph mark yes they will do it  |
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Post by buster on Aug 24, 2018 11:13:19 GMT
once rode a 400 home for a mate (he’d just bought it) and knocked it up to 90 for a long sweeping bend and half way round the crappy burmese rubber tyre on the rear decided to cook it felt like I’d got a puncture, so after slowly easing the throttle down, getting it back under control and emptying my boots I decided slow and steady was the order for that bike. never rode it again it was a lurid shade of pink...
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Deleted
Deleted Member
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Post by Deleted on Aug 25, 2018 4:17:00 GMT
The silver UK 400 SD was discontinued in 1980.
I wonder why? In a nutshell there was more liability in having it on the road than not.
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Post by BritPete on Aug 25, 2018 12:21:13 GMT
The silver UK 400 SD was discontinued in 1980. I wonder why? In a nutshell there was more liability in having it on the road than not. Yes it was to slow when you needed to get out of trouble so they went with the faster Red and Black |
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Post by bodie on Aug 25, 2018 12:36:23 GMT
The silver UK 400 SD was discontinued in 1980. I wonder why? In a nutshell there was more liability in having it on the road than not. Yes it was to slow when you needed to get out of trouble so they went with the faster Red and Black I thought it was because the 250 in silver was well fast enough  |
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Deleted
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Post by Deleted on Aug 25, 2018 15:53:22 GMT
It was by miles.  |
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Post by na44superdream on Aug 26, 2018 0:50:15 GMT
"Classicmechanics" article extract  |
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Deleted
Deleted Member
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Post by Deleted on Aug 26, 2018 4:28:53 GMT
The official silver (actual) 250N’s performance details where destroyed in a mysterious fire in 1983.
Hmm. Draw your own conclusions.
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terryc
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Post by terryc on Aug 26, 2018 7:09:03 GMT
They did'nt want to affect sales by letting people know how slow they were |
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Deleted
Deleted Member
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Post by Deleted on Aug 26, 2018 7:12:42 GMT
They did'nt want to affect sales by letting people know how slow they were Quite the reverse in my thoughts......the reds were pumped out to the learners.......red for danger got seriously played down these years. They created an accidental monster (silver 250) and they knew it. |
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rickntheo
Full Member
The older I get the faster I was.
Posts: 215
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Post by rickntheo on Aug 26, 2018 9:50:47 GMT
Well I'm getting no where near those figures
So do I look at compression, fuelling, aerodynamics, tyre pressure.?
Or do I just spray it silver
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