Skip to main content
000000 000003 000006 000009 000012 000015 000018 000021 000024 000027 000030 000033 000036 000039 000042 000045 000048 000051 000054 000057 000060 000063 000066 000069 000072 000075 000078 000081 000084 000087 000090 000093 000096 000099 000102 000105 000108 000111 000114 000117 000120 000123 000126 000129 000132 000135 000138 000141 000144 000147 000150 000153 000156 000159 000162 000165 000168 000171 000174 000177 000180 000183 000186 000189 000192 000195 000198 000201 000204 000207 000210 000213 000216 000219 000222 000225 000228 000231 000234 000237 000240 000243 000246 000249 000252 000255 000258 000261 000264 000267 000270 000273 000276 000279 000282 000285 000288 000291 000294 000297 000300 000303 000306 000309 000312 000318 000321 000324 000327 000330 000333 000336 000339 000342 000345 000348 000351 000354 000357 000360 000363 000366 000369 000372 000375 000378 000381 000384 000387 000390 000393 000396 000399 000402 000405 000408 000411 000414 000417 000420 000423 000426 000429 000432 000435 000438 000441 000444 000447 000450 000453 000456 000459 000462 000465 000468 000471 000474 000477 000480 000483 000486 000489 000492 000495 000498 000501 000504 000507 000510 000513 000516 000519 000522 000525 000528 000531 000534 000537 000540 000543 000546 000549 000552 000555 000558 000561 000564 000567 000570 000573 000576 000579 000582 000585 000588 000591 000594 000597 000600 000603 000606 000609 000612 000615 000618 000621 000624 000627 000630 000633 000636 000639 000642 000645 000648 000651 000654 000657 000660 000663 000666 000669 000672 000675 000678 000681 000684 000687 000690 000693 000696 000699 000702 000705 000708 000711 000714 000717 000720 000723 000726 000729 000732 000735 000738 000741 000744 000747 000750 000753 000756 000759 000762 000765 000768 000771 000774 000777 000780 000783 000786 000789 000792 000795 000798 000801 000804 000807 000810 000813 000816 000819 000822 000825 000828 000831 000834 000837 000840 000843 000846 000849 000852 000855 000858 000861 000864 000867 000870 000873 000876 000879 000882
English French German Italian Spanish

Electra , Tyres, Ignition

Forums

Hi, new member purchased Electra.

What are the correct tyre sizes? Recommend brand and suppliers?

Just got it running briefly, it’s running points. Boyer electronic recommended ?

Thanks

Permalink

Hi Andrew,

Welcome to NOC and the forum.

Try this link

https://www.nortonownersclub.org/node/7517

Reading this you will see the Electra correct tyre sizes. You will also see a lot of opinion, often from people who have never owned a Norton Lightweight, never mind an Electra. I leave it to you to seek out the pearls from the rest of the wisdom.

I run electronic ignition and having run previously on points for many miles. Pazon or Boyer, the electronic ignition transforms maintenance, performance and reliability.

Peter

Thanks Peter,

Interesting as currently fitted are 3.25 x 19 and 3.50 x 18 I’m glad I asked!

Yes I will go for the Ignition.

 

 

Permalink

Mitas tyres any opinions ?

Permalink

Is really dependent upon how you ride it or want to ride it. If you just want to tootle around at a leisurely pace,  then Avon Skidmasters or Mitas will be fine. If you like to enjoy a brisk pace (relatively speaking) and chamfer the stand lug/ silencer/ footrests then Conti Classic Attacks are, I believe, in pole position as probably the best 'classic bike' tyres available today (they are radials). Avon Roadrider and Bridgestone BT45's (now 46's) are in the middle, but still very very good. Just remember the tyres are your link between enjoying your bike and rueing the scrapes, dents etc when they didn't grip.

Regards, George 

Andrew,

I know you state you have an Electra, but your question to George is not so simple to answer.

At the rear, if you have an Electra the recommended tyre size only just fits without rubbing the mudguard. However, if you have an Electra without the original guard, and the new guard permits, a wider tyre can be accommodated until it rubs the chaincase. Remove the chaincase and maybe a yet wider tyre can be fitted. You get my drift.

At the front the tyre width is restricted with early Electra fitted with narrower Roadholder forks. Later fork, with steering lock in top yoke, allows a wider section front tyre. Further tyre size options appear if you ditch the standard front mudguard and centre support.

I stick with the recommended tyre sizes, reasonably young and with good tread, and keep in mind they are the two contact points keeping me upright. 

Peter

Permalink

Hi Andrew,

Further to Peters information (a very comprehensive answer and much better coming from a lightweight owner than me), 

From your originals noted above, a 3.25x19 has a metric equivalent of a 90/90x18.

A 3.50x18 would be either a 100/90x18 or (if you can find one) a 100/80x18.

I should state that the minimum recommended rim width for a 100/90 is a WM3, so if you have WM2 rims front and back this will limit your choice. Of the tyres I mentioned, only the Avon Roadriders are a 'universal' tyre, i.e. can be fitted on either wheel. All the others are for front only or rear only fitment. This is good news should you choose/need to go with a 90/90 at both ends.

For info, based on Peters notes, I measured the installed width of my various bike tyres today.

Bridgestone BT45 F90/90x18 on WM2 rim = 87mm wide, R110/80x18 on WM3 rim = 109mm wide.

Metzeler Roadtec01 F100/90x18 on WM3 rim = 100mm wide, R110/90x18 on WM3 = 109mm wide

Pirelli Phantom Sportcomp F100/90x18 on 2.5"rim = 99mm, R130/70x18 on 3.5" rim =132mm wide.

From these examples, they all have an installed width very close to the stated width.

HOWEVER, Avon (from their website)  state a width of 97 - 99mm for a '90' section tyre, and 107 - 109mm for a '100' tyre. Why this should be I have no idea (the roadrider widths seem to be all over the place when you scroll down the list!) but you need to be aware that they may be wider than what you would think. If you want/need to go with Avon, perhaps a phone call/email to their tech dept will confirm.

Hopefully you will be able to find something that a/fits, b/ will suit your riding style and use, and c/ won't break the bank. 

I will add that Avon inner tubes are quality items, way better than the various 'unheard of ' far eastern brands readily available on ebay and cheap outlets.

Hope that this helps,

George.

George (and Peter),

Thank you very much for your information and trouble taken it is much appreciated.

 

Regards Andrew 

Permalink

On the web site  aoservcies.co.uk  is some specific advises for fitting Boyer ignition and Regulation for the 12V etc. Recommend 2X 6V Wipac coils (Second hand will do nicely)

Permalink

Back to tyres for a moment - I find (as Peter says) that you cannot stray far from the truth with the back tyre. Also, a good old-fashioned square profile is recommended.

As Peter says - stray off the guidelines with a modern round proflie tyre and you are inviting trouble. There is very little room 'twixt tyre sidewall & mudguard alongside the chain run.

Mitas tyres are OK in my book - they do an excellent tyre - I have one fitted at present.

Its 3.25 x 18 on the rear. - See photo

Attachments
Permalink

Hello I have a New Rear Mitas tyre Dunlop copy, For sale around the 65 Quid and mark It is A 350x18 bought by for my Navigator but I have another one as well the front tyers were 3.00x19 they come in at 86 Quidish   Now have Fun guys  Now if you want to buy a  350X18 Mitas Rear Tyer New Then Email annjeannette@btinternet.com  

Yours Anna j

Permalink

3.25 sounds too big for the front.  Dommies (and Inters) made do with 3.00, as did Commandos up to 1973.  If the forks are 7" spacing, modern 90/90 will be very close to the bridge.  I have a Roadrider in the garage that I took off my Dommie because I couldn't stop it rubbing - the previous Roadrunner just slightly touched occasionally but the newer Roadrider scraped.  Bacon lists 19" rims with 3.00x19.  If you have 18", maybe there's a little more space?  But steering may not be as nice.

Avon SM2 / Speedmaster will be closest to original, and they have modern rubber. 3.00x19 front, 3.25x18 rear.

Permalink

Hello  all now Metric size tyers will be hard to go on the rims as these are sized for tubless tyers and cast alloy wheels where you need a tyre fitting machine, So you still can get Tyers for tubes in Imperial sizes  So you can fit them at home with your own set of tyers irons like I do  Now do have fun Ps now 3.25 x19 front tyers are Not too big As I have them on front of my Norton Manxman 650 and I have recently fitted a new rear Avon Tyer A 4.00x18 Rear with a New tubes and rim clamps                     yours anna j

 

Norton Owners Club Website by White-Hot Design

Privacy Policy