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engine advice needed

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sickpup
Old Timer



Joined: 21 Apr 2004
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PostPosted: 22:12 - 07 Aug 2024    Post subject: Reply with quote

stinkwheel wrote:
They made it with a 250cc engine because when that series of bikes first came out, you could ride up to 250cc on L-plates so that's what people wanted. Same reason as learner bikes are now almost all 125cc, they make 100 and 110cc bikes but people in the UK don't buy them.


They made it as a 250cc because it was a stop gap model after the Superdream stopped production in 1986, the CMX250 was initially produced only in 1985, 1986 and 1987 and the Nighthawk had only started development and was slated for release in 1992. It meant Honda retained a 250cc 4 stroke in the line up.

The CD250 was released in 1988 (5 years after the restriction of learners to 125cc) and was on sale until 1992 but I have only seen bikes that were made in 1988 and 1989.
I have seen a couple of odd models, one Silver sold in Japan, Australia and SE Asia, one Gold marked as a special edition, no idea what years these were made.

They used running parts from models already produced including the Benly (frame and running gear), CMX250 (engine) and the CBR600 (electrics and front brakes) with a new set of clothes. A true parts bin special.

I've often thought they were also testing the water with a retro British styled bike, this would explain the new tank and Triumph styled exhaust silencers but were a few years too early.
Kawasaki succeeded 10 years later with the W650 but they are not dissimilar looking.
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stinkwheel
Bovine Proctologist



Joined: 12 Jul 2004
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PostPosted: 22:23 - 07 Aug 2024    Post subject: Reply with quote

I was meaning that more generally, it's a continuation of the series of 250 paralell twins they started making in the 60s.
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“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.
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lingeringstin...
Spanner Monkey



Joined: 01 May 2014
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PostPosted: 22:44 - 07 Aug 2024    Post subject: Reply with quote

I had some of those earlier twins. They weren't bad. I was especially fond of a CB360 I had that I got a big bore kit done. Same thing as the 350 but with six gears as I recall. They seemed like proper bikes.

A mate had one of those 450 Black Bomber things and I was right jealous.

But the only way to describe a Benly/CMX thing is a CB125T with bigger pistons and no other attempt to make it be a better engine. The 125's were like 15hp and the 250 was like 17. Hardly worth the effort.
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