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Old 18th May 2017, 01:54 PM
fdx fdx is offline
Novice Racer Member No. 15603
41 posts since Apr 2009
Motorbike: Royal Enfield Bullet 500 Classic
Default self build bikes registration questions

I have a plan to build replica of a 1910's-20's motorcycle - board track racer.
Its basically a slightly modified bicycle with added engine.
According to rules it cannot be considered as a assisted bicycle.
(it will have 147ccm briggs & stratton engine - anyway too big to justice assist cycling...)

But what are the chances to register it as a motorcycle? Is there anything like self build motorcycles category I can register it under?
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Old 18th May 2017, 05:45 PM
the landshark's Avatar
the landshark the landshark is offline
Quantum Mechanic Member No. 7493 from Mallow
5,865 posts since Dec 2007
Motorbike: TLR,Z900,CB200,CD200,Pan
Modifications: They sometimes work
Default Re: self build bikes registration questions

You will need to get on to the nsai, they deal with individual vehicle approvals.
The details are on their website. There are some amount of hoops to jump through though.
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Old 18th May 2017, 05:58 PM
kwackquack kwackquack is offline
Supporter Member No. 28051
3,394 posts since Jan 2012
Motorbike: zx6r
Modifications: fines
Default Re: self build bikes registration questions

Get on to one of the custom builder outfits, they have a way of getting frame numbers etc. so might cost a bit but also a lot less hassle
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Old 18th May 2017, 06:48 PM
ab_irl's Avatar
ab_irl ab_irl is offline
Supporter Member No. 3376 from Wexford
464 posts since Jul 2006
Motorbike: R6 and a load of Cub 90's
Modifications: Sidecar
Default Re: self build bikes registration questions

Looked into before bloody nightmare. Went through section after section of getting passed around. Best thing get a tax book for any pile of crap and put down your engine number the first time you register it then a new frame number a couple of months later, or just stamp your new frame with the existing number. You'll be building it for a while so get that sorted first. I used a nsr 80 log book. Declare it to the insurance company what it is. You might have to get an engineers report for them. I had to do for the trike.
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Old 19th May 2017, 11:56 AM
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triumph triumph is offline
MotoGP Legend Member No. 5461 from Dublin
1,068 posts since May 2007
Default Re: self build bikes registration questions

You'd have a nightmare registering a self build as the engine would need to conform to modern emissions regulations and need the paper work to prove it does. If it was me I'd get something like a New Hudson autocycle with a log book, 2-500 in the UK. Import it, get your logbook and then modify the frame to whatever you need while retaining the head stock for the frame number
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