Search found 13 matches

by JahCoop
07 Aug 2018, 18:40
Forum: Technical
Topic: Anyone else get a horrible knocking sound at idle?
Replies: 0
Views: 3494

Anyone else get a horrible knocking sound at idle?

I know a 2 smoker can be a noisey engine but I get a fairly loud and deep thudding knock constantly at idle warm or cold on my MK1. Overbored 1.50 mm. Dep pipe standard jetting running autolube and Boyesen dual stage reeds. Rev it and it goes away but at idle it’s always there! Something to worry ab...
by JahCoop
15 Jun 2018, 22:58
Forum: Technical
Topic: Two pick up coils..... why?
Replies: 0
Views: 3628

Two pick up coils..... why?

Anyone know why the CRMs have two AC inductive pick up coils for ignition timing?

Surly a single cylinder 2 stroke only needs one right!?
by JahCoop
04 Jun 2018, 18:22
Forum: Technical
Topic: Oil leak from Balance shaft
Replies: 4
Views: 4887

Re: Oil leak from Balance shaft

If it’s only while warm it could be worth checking the gearbox breather pipe for blockage. Long shot but the expansion inside under heat could be forcing oil out the seal instead of air out the breather pipe if you know what I mean? If that’s okay then likely hood is that it’s the seal that’s just n...
by JahCoop
04 Jun 2018, 17:20
Forum: Technical
Topic: Ignition capacitor/condenser
Replies: 0
Views: 2894

Ignition capacitor/condenser

Got an intermittent/weak spark issue and I’m thinking it might be the ignition cap/condenser. Coil and plug + plug cap check out fine. CDI is a rare failure (it’s a MK1) triggers at flywheel seem to get a signal fine and wiring loom/connections all have continuity and are in brand new condition (rec...
by JahCoop
18 Sep 2016, 21:25
Forum: Technical
Topic: Oil Sump Cracked - URGENT Help Please!
Replies: 5
Views: 5817

Re: Oil Sump Cracked - URGENT Help Please!

I hate to say it but essentially it looks like you have 2 options. Replace the right hand engine casing if you can find a 2nd hand one. Or if you still have the part that snapped off have an engineering outfit or a mate who can do a decent job of alloy welding reattach it it and try to re tap/repair...
by JahCoop
05 Sep 2016, 16:02
Forum: Technical
Topic: Mk1 owners.... Distance from bottom yoke to spindle.
Replies: 0
Views: 3014

Mk1 owners.... Distance from bottom yoke to spindle.

Anyone who finds themselves with a spare 5 mins and has a Mk1 with the original forks on it. Could you measure the distance between the bottom surface of the bottom yoke and the centre of the spindle with the front wheel off the ground? Just looking to see if my forks are at the correct height in th...
by JahCoop
04 Jun 2016, 20:02
Forum: Technical
Topic: Ignition condenser... Where is it!?
Replies: 3
Views: 3927

Re: Ignition condenser... Where is it!?

Thanks for that Knackered
by JahCoop
04 Jun 2016, 18:00
Forum: Technical
Topic: Ignition condenser... Where is it!?
Replies: 3
Views: 3927

Re: Ignition condenser... Where is it!?

Anyone? I've just located it under the tank before the oil level sensor but I'd rather put it where it's meant to be lol
by JahCoop
26 May 2016, 17:26
Forum: Technical
Topic: Ignition condenser... Where is it!?
Replies: 3
Views: 3927

Ignition condenser... Where is it!?

Hi there! Could one of you knowledgeable folks let me know where on the MK1 CRM the ignition condenser is meant to be? I'm trying to rewrite one that's loom was butchered and I've no idea where on the bike the component is meant to be located. Can't find any obvious mounting tab for the rubber hold ...
by JahCoop
25 Oct 2015, 14:54
Forum: Technical
Topic: Alternative Clutch inner hub
Replies: 2
Views: 3645

Alternative Clutch inner hub

So I've managed to snap off one of the posts in the CRM's inner clutch hub.... Great job I know ha ha Is anyone aware of any alternative hub that works? I know the CR's seem to use 6 posts so probably are out of the question but crf perhaps? The only 2nd hand one I can find is extortionately priced!...
by JahCoop
10 Jul 2015, 23:20
Forum: Technical
Topic: Quick question about swing arms
Replies: 2
Views: 3901

Re: Quick question about swing arms

Anyone know what exactly the difference is between a Mk1 swing arm and the other ones? Any pics? I'm kind of certain I've got a Mk2 swing arm and shock on my Mk1 CRM but I definitely have a MK1 linkage! Would this be possible!?
by JahCoop
09 Jul 2015, 23:02
Forum: Technical
Topic: No idea what should be here?
Replies: 10
Views: 9549

Re: No idea what should be here?

I'm the same boat as you man ha ha ha! My CRM is a MK1, pure eBay gamble no V5 sent off for the replacement log book and the DVLA gave me the same story..... No record of the vin number :-( so I'll have to get it through the registering a second hand vehical farce now as well.... I suspect these bik...
by JahCoop
06 Jul 2015, 14:04
Forum: Technical
Topic: Steering head tube "lengthened"
Replies: 3
Views: 3951

Steering head tube "lengthened"

Hi! Been a member since December (rhyme not intended) but this is my first post.... Forum seems like an excellent font of knowledge and has been incredibly handy thus far so many thanks! However I've a question that I don't think has been covered before.... Has anyone ever heard of anyone "extending...