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Author Topic: New guy, old bike.  (Read 4364 times)

Offline Captain Snakebite

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New guy, old bike.
« on: July 05, 2011, 07:15:31 PM »
Evening all - just a quick pop-in to say Hi.

So - erm... - Hi!

Am currently in the process of acquiring the makings of (what I hope will be) a nice little project (400f2 motor in a 550k rolling chassis if all goes according to plan).

I'm a desk-jockey by day but am pretty comfortable around spanners and oily things that go BRUMMM.

My mystical super-power is the ability to ask really stupid questions, so apologies in advance folks!  :)

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Offline mickwinf

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Re: New guy, old bike.
« Reply #1 on: July 05, 2011, 08:04:24 PM »
hi captain, welcome to the forum, interesting project, i am not sure its possible to fit a 400 engine to a 550 frame but i am sure someone on here will know for sure!! regards,Mick
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Offline Captain Snakebite

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Re: New guy, old bike.
« Reply #2 on: July 05, 2011, 11:36:05 PM »
Cheers Mick

Am hoping it'll be mostly a case of a 550K front mount and some rummaging through tons of bolts to find the right sizes - if nowt else, it'll keep me busy for a while. :-D

Owen
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Offline florence

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Re: New guy, old bike.
« Reply #3 on: July 06, 2011, 09:01:40 AM »
Welcome

The 550 rolling chassis is heavier than the 400.  Why do it, won't it be very underpowered?
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Offline SteveD CB500K0

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Re: New guy, old bike.
« Reply #4 on: July 06, 2011, 10:00:03 AM »
37bhp vs 50bhp.

You'd lose the agility of the 400 by using the larger rolling chassis.

Still, as they say, you can fit anything to anything with a bit of fabrication!
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Offline Bryanj

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Re: New guy, old bike.
« Reply #5 on: July 06, 2011, 05:53:18 PM »
I think you are into lots of special spacers and bolts to do that, easier to fit any 500/550 engine
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Offline Captain Snakebite

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Re: New guy, old bike.
« Reply #6 on: July 07, 2011, 01:51:36 PM »
Quote from: florence on July 06, 2011, 09:01:40 AM
Welcome

The 550 rolling chassis is heavier than the 400.  Why do it, won't it be very underpowered?

I'd thought about that, but there's only about 14kg in it - according to wikipedia anyway - and I was planning on a bit of a lightening exercise anyway, with a nod to cafe styling and keeping unnecessary bits to a minimum.  I reckon that as I'm only 10 1/2 stones dripping wet anyway, 37 gee-gees should be plenty enough to play with.
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Offline Bryanj

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Re: New guy, old bike.
« Reply #7 on: July 08, 2011, 07:28:02 AM »
Thats 37 very old and tired japanese Gee Gees, and at the crank! so it'l be a fair bit less now
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Offline Captain Snakebite

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Re: New guy, old bike.
« Reply #8 on: July 08, 2011, 01:53:06 PM »
Quote from: Bryanj on July 08, 2011, 07:28:02 AM
Thats 37 very old and tired japanese Gee Gees, and at the crank! so it'l be a fair bit less now

True, but I'm pretty worn out myself these days.  ;)

Anyway, the tape measure's been depressing the daylights out of me lately and no matter how many times I measure things, the lump won't fit without some pretty severe frame butchery.  It's a nice solid frame and I don't want to take cutters to it, so am admitting defeat and shopping for a 400 frame.  Luckily I know a chap who might have a spare stashed somewhere.

Fingers crossed...  ;D
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Offline K2-K6

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Re: New guy, old bike.
« Reply #9 on: July 08, 2011, 06:52:32 PM »
I guess most people trying to shoe-horn a bigger motor into a small frame is more conventional.

You could try and squeeze it into something newer for a hybrid.
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