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How do I go about extending the HT leads on my R1 coils?
Oliver Jetson - 6/4/05 at 05:43 PM

Has anyone done this - I need to so that I can mount them in a suitable place on my scuttle.
What do I need to do?

Cheers,
Oli


subk2002 - 6/4/05 at 05:54 PM

My coils are mounted on the plastic plate they came with and just sit on top like they do on the bike

Drew

Check my photo archive under air box and you can see where they sit

[Edited on 6/4/05 by subk2002]


Oliver Jetson - 6/4/05 at 06:04 PM

Drew,

I had thought of that but space is well tight under my locost bonnet (less room than your MK), so I can't use the plastic plate.

Thanks,
Oli


subk2002 - 6/4/05 at 06:16 PM

I think you can buy long leads from halfords and they just push in.
Im not to sure, someone will correct me if im wrong

Drew


marc n - 6/4/05 at 06:20 PM

you can buy longer coil lead ( it screws into the barbs in the plug cap and coils )

regards

marc


Hellfire - 6/4/05 at 07:18 PM

Just measure the lengths you require and get them to order from Merlin Motorsport (IIRC). Also make sure you get the 7mm dia and not the 8mm dia leads.


OX - 6/4/05 at 07:29 PM

i think the leads are sealed into the coil tho


Oliver Jetson - 6/4/05 at 07:53 PM

The plug ends screw off I've just noticed and just had a word with someone who seems to be in the know, and he said that NGK do an adaptor which screws into the existing leads (at the unscrewed plug end) and then you can screw in a new length of lead to the other side of the adaptor, therefore lengthening them.

The leads are sealed into the coils I think by the looks of it.


Kissy - 7/4/05 at 12:52 PM

You can either:
1. extend the existing leads by letting a section of HT into the middle of it. I have made successful joins either by baring back the copper and soldering it, then build up the insulation needed using heatshrink tube, or by using small self-tapping screws brazed back to back, again using h/s tube to restore insulation. Last layer should ideally be adhesive lined to seal joint.

or

2. Use the above method but replace plug cap on new extended piece - yes it can be done. The part of the cap that connects to the plug can be unscrewed. the lead will then pull out of the top of the cap. The brass washer can then be de-soldered from the lead and be soldered on the new one. Again use the h/s tube to fix insulation

or

3. Completely replace the HT wire. The ribbed collar at coil entry will undo. The wire can then be pulled out (it fits to a spike internal to the coil). To replicate the rib on the HT wire for the collar to bear on I used a 3mm length of adhesive lined heatshrink (may need 2 layers)

All the foregoing is based on my experience with my CBR1000FP - I think a lot will translate to other brands.
Pic: http://locostbuilders.co.uk/photos.php?action=showphoto&photo=engine%20above%20l-h.JPG


Oliver Jetson - 7/4/05 at 04:34 PM

Is this what I need?

HT lead connector


Kissy - 8/4/05 at 10:28 AM

They'd do, but you could do better/neater - depends on the configuration. I could mod you a set at cost - I work in Cannock so you cannot be too far away. I'm changing jobs soon so you need to let me know. I can always post 'em back to you.