cb750

Hi Nikki, welcome. Good to see another member in the midlands. I've been rebuilding my series 3A for some time and hope to have it on the road spring/summer (this year??). You will get plenty of advice if you have any problems.

Rob

Just watched this on You Tube, thought the engineers out there may be interested!

The video is titled:- No 6207 A Study in Steel 1935

Sorry can't find out how to post a link to it

Rob

I've always used 2 pack floor paint ( the type with hardener), a friend of mine uses the standard floor paint which isn't as hard wearing but he just overcoats it when it's worn. Can't remember the name, it may be Manders as that was what we used at work. Make sure the floor has a a damp proof course under it as the paint may lift. I also primed my floors with a concrete sealer first. Watch the tyres, they can stick to the paint when the paints fresh!

Rob

Great! You will find all sorts of bits to make now! I have had mine years and wouldn't be without it even though it has it's size limitations. I even do small milling jobs on it using a vertical vice.

Rob

Caerbont who are supplying my 3 wire sensor got Smiths telemetrix gauges have the instructions on their website. The guy there said the sensor head needs to be about 1mm from the flats on the bolts and light will flash when it senses the heads, also the 4 pulses per rev should be enough for speedo accuracy.

Rob

In reply, my chassis was cracked at the top welds where the sides meet the front cross member ( put a torch on the othe side of the welds and it shone through). Also cracking near the engine mounting towers and at the rear of the engine support trays. All the cracks have been reinforced and weld repaired professionally. I have reinforced the front suspension lower mountings as this is a weak spot and also rebuilt the bracketry that holds the top mounts of the rear coilovers.

Rob

Looks like my 3A. Mine is fitted with cycle wings so you would have to make brackets to take them and fill the holes left by the original wings.

Rob

Had mine powder coated graphite grey metallic by Redditch Shotblasting. some of the powder coasters have a shiny aluminium finish or a chrome look powder but I believe they have to clear powder coat over it to protect it from UV. It's not north Norfolk but Maldon shotblast and powder coating in Essex did an excellent job of a motorcycle frame for me, I think they offer a collection and delivery service.

Forgot to say thanks for setting this up Dan, should bring in a wider interest in our club.

Strange, we have just been on the Facebook page and Facebook has now notified us that there has been 2 requests to change our account password! Coincidence?

Can't believe these are genuine bids! Just gone for £6100!

Hi, I have a 3A with pinto. It uses standards Sierra arms (mine are steel castings). The engine mount towers are welded to 2 channel sections which run from the front to the back of the engine bay. I believe when you first build the kit you can move these to get the right width for the engine, they are then fixed in place. Yours may be set to take the v6?

Rob

My sierra 3a has studs along the sides plus studs across the front and uses nuts to hold into place. Once nuts removed it's quite easy to lift on and off. The pedal box cover needs removing first though and the wiper wiring disconnecting.

Happy New year to you all, and let's hope I get the car finished to get to some meetings.

Will you be using the diff flange/propshaft bolt heads for the signal to the speedo or will you be mounting a sector plate between the flanges?

Rob

Dan, you can get hydrogen embrittlement with chroming. "My" plater does some parts for Westfield and these parts are put in an oven for a certain time to reduce the problem. He did this with all of my safety critical parts on my bike. Have you looked at the chrome look powder coating?

Rob

Hi, I am interested in the seats, if kevinflyingpeanut doesn't follow up can we come and have a look at them with a view to purchase.

Rob

Some factory bolts have a thread lock material applied to them, yours may be one of these.

You could do what I did on my custom bike. As previous people have said, make sure you buy the correct fuel pipe but then overbraid it yourself. Use the smart ends to cover the braid. You can pick up the overbraid off ebay

Thanks Stephen, I will have a look at that when I get the sender

Looked at isspro and they will make one with the correct resistance curve that I need but I have decided to bite the bullet and buy the matching telemetrix sender make an adapter plate for it and drill the tank for a new fuel take off pipe. MORE WORK!

All sorted today! Roll bar finished ready for welding

Thanks for the offer but I really need a series 3 so I can pick up some reference points off the monocoque chassis.

Rob

Gbs can't give me the spec! I may have to talk to Richard and see if he can get someone to measure it for me. The early sierras had this "reversed" resistance sender.

The tank's off and the sender is out. The values I'm getting are 20 ohm full, 260 empty and 65 ohms 1/2 full.

Options are: buy the matching smiths sender and make an adaptor plate for it plus drill the tank and fix a new fuel take off pipe.

Or, buy a mismatcher and use the original sender.

Or buy a new sierra sender from gbs which will fit the original fixings and provide an integral fuel pipe and hope it's the later version giving nearly the correct resistance values. If this option did not work then buy a mismatcher unit to get it to work.