lambretta 290 rotax

Anything related to Lambretta or Vespa Scooters fitted with LC, Motorcycle and/or Auto engines!
holty
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yeah your right garry, max torque and bhp between 7 and 8k, its pulls so hard, no wonder the clutch struggles, it sounds way better now its set up right, i will try and get a video loaded up, i had to put my fingers in my ears when it was in full song on the rollers.
hendy
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Absolutely brilliant result. You must be chuffed to bits.
holty
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hendy wrote: Thu May 03, 2018 10:24 pm Absolutely brilliant result. You must be chuffed to bits.
yes very pleased, im looking forward to getting some more milage on it now and giving it some welly :D
eden
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holty wrote: Thu May 03, 2018 9:25 pm yeah your right garry, max torque and bhp between 7 and 8k, its pulls so hard, no wonder the clutch struggles, it sounds way better now its set up right, i will try and get a video loaded up, i had to put my fingers in my ears when it was in full song on the rollers.

Be a much nicer ride than the green graph :)
cartmel808
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Brilliant result that & a brilliant thread... really enjoyed watching this develop... well done!




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holty
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RManson
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Sounds good Holty and a decent number to boot eh?! Glad to see it's going well! What sort of timing curve are you using?
holty
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RManson wrote: Fri May 11, 2018 7:38 am Sounds good Holty and a decent number to boot eh?! Glad to see it's going well! What sort of timing curve are you using?
cheers ryan,
im running 17 degrees static timing using one of anthony tambs external pick up and his dc ignition box running straight from the battery, it might make more power with an ignition curve to the rotax specs, something i might add in the future, hows yours coming along ?
holty
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well finally got my rear runners and side panels fitted, looks almost like any other scooter now, had a little ride out last night for an hour or two, ran well, no problems
ImageUntitled by stephen holt, on Flickr
ImageUntitled by stephen holt, on Flickr
Image32631004_1286556971479317_5126740777191342080_n by stephen holt, on Flickr
Image32669604_1286556601479354_6531269712335077376_n by stephen holt, on Flickr
Image32740288_1286556701479344_1896852089867337728_n by stephen holt, on Flickr
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RManson
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Looking good Holty! What kind of coolant temps are you seeing? Must be maintaining decent temps otherwise that overflow tube would be giving you quite the surprise once it got hot! :D

I'm running similar initial timing specs, 17 degrees BTDC, total around 24 for now. Will play with it a bit, but it seems happy there. Do you have an EGT gauge fitted? If so, what temps are you seeing? How is the exhaust working out?
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