RB250 SCOOTER SHOOTOUT MOTOR

Post your Lambretta dyno graphs here! But graphs & spec info only, keep the chat in the 'dyno chat' section ;o)
Eibar
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Wed Nov 14, 2012 1:27 pm

45 amazing .

Does the dyno have its SAE correction factor turned on
potato

Darrell Taylor
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Wed Nov 14, 2012 1:53 pm

Eibar wrote:45 amazing .

Does the dyno have its SAE correction factor turned on


yes turned on if you check all my graphs at the bottom right youll see the correction factor type saej1439 (equivalent to dynojet) and the automatic barometric adjustment which was quite a lot yesterday at 0.946 therefore making the power figure lower

if you see one with 1.00 its uncorrected

just checked for you and uncorrected is 48.13 bhp
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Adam_Winstone
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Wed Nov 14, 2012 2:13 pm

"std no welding crankcases matched to cylinder", not even for stroke increase and central trench?

Adam

Darrell Taylor
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Wed Nov 14, 2012 2:19 pm

your right adam it is machined a little for clearance ill edit that part(the case was already done so not a job on my list hence i forgot)
although my referance was to no welding / std
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Adam_Winstone
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Wed Nov 14, 2012 2:22 pm

Welded and machined or just machined? I ask as I've got various machined and welded + machined cases and various modified big-end rods to fit accordingly. I guess that guessing the balance right is the issue here so I'm always interested to hear/know what others are doing.

Thanks for the info, on what seems like an amazing motor :)

Adam

Darrell Taylor
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Wed Nov 14, 2012 2:24 pm

just machined it uses the pm conrod 116mm that has a very slim profile ,i believe its same as jb crank so eden has the same i think
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Adam_Winstone
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Wed Nov 14, 2012 2:55 pm

Cool, thanks.

Funnily enough, that's exactly the rod/crank that I recently bought, along with Muggy piston with the intention of putting together a 62mm stroke Avanti TT3 :)

Adam

Darrell Taylor
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Wed Nov 14, 2012 3:22 pm

worth checking the big end clearance,the ones ive had are too tight 0.2mm
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Adam_Winstone
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Wed Nov 14, 2012 4:03 pm

Side float?

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drunkmunkey6969
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Wed Nov 14, 2012 5:33 pm

Phenominal result.....would you hazard a guess that it is now peaking somewhere around 9500rpm??

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