John Bond - Group 6 - RB250 Race Scoot - Cool Like 007.....

BSSO race info, reviews, plus rider and scooter tech info.
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drunkmunkey6969
Moderator
Posts: 2838
Joined: Sun Jan 04, 2009 1:42 pm
Main scooter: '69 Lambretta GP
Location: North Yorkshire
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RB250 - 36bhp - lovely spread of power for a novice rider to learn the ropes without sh177ing his pants (too much!!) :lol: :lol: :lol: :lol:

They look 'sparse' do cut-downs....but involve a surprising amount of work!
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IMG_0066 by drunkmunkey6969, on Flickr

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IMG_0068 by drunkmunkey6969, on Flickr

This is what we are given to work with......doesn't look like much to start with! Full length head stock and various mounts/struts need removing.
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IMAG1036 by drunkmunkey6969, on Flickr

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IMAG1037 by drunkmunkey6969, on Flickr

Grp 6 frame compared to our own stretched/raked sprinter frame
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IMAG1070 by drunkmunkey6969, on Flickr

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IMAG1072 by drunkmunkey6969, on Flickr

Forks need cutting, sleeving and welding to match the new lower frame.
Left to Right: Standard Length, pair that's been done, pair getting done
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IMAG1074 by drunkmunkey6969, on Flickr

Two different 62mm/116mm cranks. The one on the left comes with con-rod machined so that you don't have to scoop out the casings. The one on the right clearly protrudes at the big end so needs casings scooping/machining out. The PM crank on the right also runs a shimmed big end.
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IMAG1102 by drunkmunkey6969, on Flickr

Casing with big-end groove machined in
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IMAG1103 by drunkmunkey6969, on Flickr


Needs a proper frame/brace for racing seat....don't want it falling off when someone bumps starts you!
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IMAG1238 by drunkmunkey6969, on Flickr


Measure up new seat from trimming
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IMAG1240 by drunkmunkey6969, on Flickr


Coming together
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IMG_0006 by drunkmunkey6969, on Flickr


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IMG_0009 by drunkmunkey6969, on Flickr

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IMG_0010 by drunkmunkey6969, on Flickr


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IMG_0011 by drunkmunkey6969, on Flickr

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IMG_0012 by drunkmunkey6969, on Flickr

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IMG_0013 by drunkmunkey6969, on Flickr


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IMG_0057 by drunkmunkey6969, on Flickr


Lighting coils removed from stator
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IMG_0058 by drunkmunkey6969, on Flickr

End result after weeks of work
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IMG_0059 by drunkmunkey6969, on Flickr

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IMG_0060 by drunkmunkey6969, on Flickr

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IMG_0061 by drunkmunkey6969, on Flickr

R1 rear shock, Delly 39mm Racing Carb, QA Throttle, lovely!
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IMG_0062 by drunkmunkey6969, on Flickr


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IMG_0064 by drunkmunkey6969, on Flickr
See our YouTube scooter channel for Tech-help: https://www.youtube.com/c/TheScooterFactory/videos
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RICSPEED
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Posts: 3334
Joined: Sun Jan 04, 2009 11:30 pm
Location: YORK

drunkmunkey6969 wrote:
Measure up new seat from trimming
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IMG_0064 by drunkmunkey6969, on Flickr
seat look far better for a trim ... love that green though :D
Its in bits scooter club: www.facebook.com/groups/132415046859320
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DigDug
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Posts: 788
Joined: Wed May 02, 2012 1:00 pm
Main scooter: Lambretta
Location: Stroud
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One week later..... Cheers Dan & Sean.... 8-)

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Did you have to do that?
mick1
registered user
Posts: 1292
Joined: Sun Dec 04, 2011 7:43 pm
Main scooter: Li Avanti 225
Location: York
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With the forks i notice you cut out a section and weld them back together.......would it not be better to cut to length and re-cut thread at top of forks ?
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sean brady scooters
Dealer
Posts: 2040
Joined: Mon Jan 05, 2009 12:09 pm
Location: Ripon, North Yorkshire
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i suppose that you could try it that way ,maybe its just swings and roundabouts as to which way you prefer ..but bear in mind that you would also need to re cut the groove for locking tab and for the headset clamp bolt .
Sean Brady Scooters - 01765 690 698
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