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Merlin Speed.

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Merlin Speed.

Post  MrTweedy on Sat Sep 06, 2014 11:52 am

Hello all.

So now I've got my Merlin running, I'm interested in knowing what sort of speed I can expect. I know top speed will be no more than say, 40-45 mph, but on a hill I'm lucky to get 20-25mph out of it. I really want to use my motorcycle regularly but at those speeds in modern traffic, it can be quite hairy. So what I'd like to know, is that a normal speed for Villiers 122cc engine? Should I get more out of it than that? If so, where can I start looking to find where I'm losing power?

Best regards

Matt

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MrTweedy

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Join date : 2014-01-21
Location : East Lothian, Scotland. 1949 Francis Barnett Merlin. 1953 Ambassador Supreme. 1969 BSA Starfire (in bits).

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Re: Merlin Speed.

Post  Jack Clegg on Sun Sep 07, 2014 9:05 am

Sounds normal to me.
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Jack Clegg

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merlin speed

Post  keith.hodgenia on Sun Sep 07, 2014 11:58 am

The first rule of tuning is "add lightness", when these bikes were new most young lads weighed maybe 8st I don't know what you weigh but I am about double that. Get it running as well as you can, then decide if you can live with it, or start looking for a bigger engine or bike. We need to remember that these bikes were utility transport that only needed to be better than walking or cycling. Good luck.

keith.hodgenia

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Location : Wirral. model 14, model 4 and 2 big boxes of bits.

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Thanks for the comments.

Post  MrTweedy on Sun Sep 07, 2014 7:43 pm

I've got the bike running as well as I can for just now. If I set it all up right, I can get 40 on the level and 30 at best going up hill. That's until either the flywheel or the points slip and the bike conks out.

One way I've found to make the bike go faster is to ride along country lanes! The closeness of the hedges makes it feel like you're going faster than you actually are!

Regards

Matt
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MrTweedy

Posts : 108
Join date : 2014-01-21
Location : East Lothian, Scotland. 1949 Francis Barnett Merlin. 1953 Ambassador Supreme. 1969 BSA Starfire (in bits).

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Re: Merlin Speed.

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