RUMCars Forum

General Category => Off Topic Lounge => Topic started by: Barry on October 01, 2013, 08:15:58 PM

Title: Jawa 350
Post by: Barry on October 01, 2013, 08:15:58 PM

350cc Two Stroke - New

That 350cc two stroke twin engine must be useful for something microcarish?

http://www.jawamotorcycles.co.uk/retro.html


http://www.f2motorcycles.ltd.uk/motorcycles.html

Title: Re: Jawa 350
Post by: Bob Purton on October 02, 2013, 08:56:43 AM

Our own Jim Lugsden swears by them, or did he say swears at them? :D

Have you not seen his combo at the openday?

Re using the engines in microcars, at least this now comes with electric start so it may be possible to use one infor instance  a Berkeley if you don't mind not having reverse gear. In other microcars the cooling would be the issue.

Title: Re: Jawa 350
Post by: Barry on October 02, 2013, 09:02:35 AM

I can't think of any other big cc two stroke that is available.  Would be great if the sidecar version had reverse.

Title: Re: Jawa 350
Post by: marcus on October 02, 2013, 11:23:26 AM

That is the later version of the engine used in Velorexes. My Velorex came with the basic castings of the later, squarer engine.

Title: Re: Jawa 350
Post by: Barry on October 02, 2013, 11:40:46 AM

Any reverse on a Velorex?

Title: Re: Jawa 350
Post by: marcus on October 02, 2013, 12:31:43 PM

The engines were fitted with a Pal Dynastart so you ran the engine backwards like a KR. Sadly my Dyna was broken, and the windings are of flat copper wire and no-one in UK could fix it even with a detailed diagram. I rigged up a starter motor feeding throuh an angle grinder's bevel gear head to turn a roller which could be pulled by a cable to press on the back wheel. Only good on reasonably level ground, and the rubber sleeve needed frequent replacing, so all added up to why I p-ex'd the Velorex for a Trojan...more liveable with.