Author Topic: boyer bransden (Read 3807 times)

paddy paul · « **on:** November 03, 2009, 02:36:00 pm »

Does any one have any experience with the Boyer bransden ignitions, found one for sale and was wondering if they are as reliable as the rest or are prone to fail, any feed back would be great thanks..

Sam Green Racing · « **Reply #1 on:** November 03, 2009, 02:54:51 pm »

Ran one for 5 years on the CR, no problems at all, once set forget and you pick up a couple of bhp in the process.

Sam.

bryanj · « **Reply #2 on:** November 04, 2009, 12:31:42 am »

they do have the ocasional failure as does anything electronic but nothing regular or specific

lordmoonpie · « **Reply #3 on:** November 04, 2009, 01:06:14 am »

I've run them on all of my race hondas for the past 12 years. They are faultless and handle vibration very well. As Sam says, once set they are maintenance free. The only time I have changed from one is to move to a self-generating ignition to save battery weight and messing on a constant loss ignition.

The support and spares backup is excellent too - still essentially a family run and friendly company.

voxonda · « **Reply #4 on:** November 04, 2009, 01:38:49 am »

Run them on my Turbo, before selling it removed it and will use it again on one of my bikes.

Rob

Deltarider · « **Reply #5 on:** November 04, 2009, 03:01:40 am »

Quote

and you pick up a couple of bhp in the process.

Can you explain us how?

Sam Green Racing · « **Reply #6 on:** November 04, 2009, 11:45:49 am »

Much more efficient burning of the fuel charge, it also makes for easier starting and enables you to get it off the choke quicker.

Sam.

Tretnine · « **Reply #7 on:** November 04, 2009, 01:08:35 pm »

These sound nice, How do they stack up to other CDI? I'm in the prelim stages of a rebuild and looking into all options. Available for a cb550, too?

Sam Green Racing · « **Reply #8 on:** November 04, 2009, 01:26:41 pm »

As you're in the States, not much point buying British when you have so many good systems over there.

Sam.

Seamus · « **Reply #9 on:** November 05, 2009, 12:07:18 am »

Which one is recommended? The early one or the micro digital?

Cheers

Seamus

Ecosse · « **Reply #10 on:** November 05, 2009, 12:29:05 am »

Quote from: SamCB750A on November 04, 2009, 01:26:41 pm

As you're in the States, not much point buying British when you have so many good systems over there.

Sam.

we do kick @ss don't we.

i am fasinated though by the stuff i see advertised in yer brit rags. example: lazer/marshall exhaust for the 550 vs. mac.

sorry for the hijack. continue with your tea and crumpets.

bucky katt · « **Reply #11 on:** November 05, 2009, 12:45:12 am »

is that boyer bransden magnetic or optical trigger?

lordmoonpie · « **Reply #12 on:** November 05, 2009, 04:31:27 am »

Magnetic - the optical triggers are Newtronic or Pirahna ignitions in the UK if you have an old one. I could never get the optical ignition to work reliably on my 350 K4 so switched to boyer and it was faultless.

Micro digital is best IMHO...

Nikkisixx · « **Reply #13 on:** November 05, 2009, 04:48:22 am »

I've had good results with a Boyer on my Triumphs, aside from an initial snafu: the solder on the back of the circuit board was too thick and was struck by the rotating assembly. This caused some eratic ignition behavior to say the least. After sanding the globs of solder down to get clearence it worked very well.

To get the most out of it I needed to run new primary wires directly from the pickup to the control box. The system is sensitive to "noise" and "drops" in the signal due to a weak circuit. For vintage Brittish bikes you must (strongly recommended) change to 6volt/3ohm coils. I did some quick research and it does not seem this coil swap is not necessary for Hondas, but you should do a deeper search to make sure.

lordmoonpie · « **Reply #14 on:** November 05, 2009, 07:21:41 am »

With the microdigital new ignitions they come with new micro coils. I have always swapped to Boyer micro coils which probably helps keep everything compatible. Never had the problem with solder - maybe your rotor isn't set right, you can get it upside down which might affect clearance?

Nikkisixx · « **Reply #15 on:** November 14, 2009, 05:22:52 pm »

Hey lordmoonpie, I had the Boyer issues on a Triumph T140. The tapered shaft for the rotor makes it hillbilly proof

. The solder was about .150 inches thick before the rotor and some sandpaper worked it down. After that she's been a one kick start and trouble free.

Terry in Australia · « **Reply #16 on:** November 14, 2009, 06:38:40 pm »

I'm surprised to hear so many good reports about the Boyer Bransden ignitions, they used to have a terrible name for unreliabilty, the (tongue in cheek) assumption was that they were using old Lucas designs, and most guys would chuck 'em for a Dyna S, so it's good to see that they've "lifted their game" in recent years. Cheers, Terry.

Nikkisixx · « **Reply #17 on:** November 14, 2009, 07:56:20 pm »

Quote from: Terry in Australia on November 14, 2009, 06:38:40 pm

I'm surprised to hear so many good reports about the Boyer Bransden ignitions, they used to have a terrible name for unreliabilty, the (tongue in cheek) assumption was that they were using old Lucas designs, and most guys would chuck 'em for a Dyna S, so it's good to see that they've "lifted their game" in recent years. Cheers, Terry.

AHHHAAAA!

Somebody used the words Lucas and design in the same post!!! Now to jump over to the Rat.net forum and make fun of Honda parts

fishhead · « **Reply #18 on:** November 15, 2009, 04:28:07 am »

The only experience I have had with the Boyer was on an XS 650. On the XS the points assembly is on the cam and is replaced with a sensor and rod that goes through the cam(sensor on one side, threaded rod through the cam and locking nut on other side). Adjusting the timing was a PITA as the "point plate equilivant thing" didnt rotate for timing adjustment and the rod that held the spinning sensor had to be loosened and repositioned to adjust timing. I thought it was kind of a dumb arrangement that could have been designed better for easier timing adjustement.

Other than that, the Boyer has been on the bike for about 5-6 years and there has been no complaints with it. Reliable starting, runs great.

News:

Author Topic: boyer bransden (Read 3807 times)