Barrel chamfer

Started by Dibble, 23 Dec, 2021, 19:31

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Dibble

Hello everyone. I am having no end of trouble fitting the barrels on the hornet resto! I've  noticed that many barrels featured in various articles show a machined chamfer which mine does not have. Is it a straightforward job to have t machined because it certainly looks as if it wouldhelp me. Im using clamps but idont have the luxury of a ramp and my left wrist is virtually useless due to previous injury etc. Any advice welcome. Happy x mas all.

Mike Farmer

 :) :) :)

I guess reading yours that you have the pistons on the conrod.

I usually put the pistons in the bores and then fit them over the rods. Its a bit fiddly but I find it easier cos you only have to fit one piston in the bores at a time, then line em up to pop em over the rod ends You have to be very careful not to drop circlip down into the engine.

If you try this, put the gasket on the bottom of the barrells first.

Mike 8) 8) 8) 8)

EDDIE SIMPSON

hello,
i dont think a chamfer should make much difference as the piston are smaller dimension at the crown. what you do need is 2 pieces of wood about 1 " x  0.25" x 12" to rest the pistons on square and parallel using the mouth of the crankcase as a rest. well oil the rings under the clamps and dont overtighten the clamps . the weight of the barrels should slide the barrels and clamps downwards easily. turn the engine to tdc and remove wooden battens and clamps. i ve always found this method makes the job very easy.
nothing wrong with other methods , just never tried them.

chaz

+1 with Eddie, always use a couple of strips of wood.

Mike, if you want a challenge, try an Ariel Square 4 motor. pistons on the rods and next to no room to do anything even doing up the barrel nuts after. A few years ago I did  4 in 2 years and none since, Im not missing them..

Mike Farmer

 :) :) :) :)

Thats avery unleasant thought. However I'll pass. I try very very hard to avoid challenge in my doteage (I haven't got a clue what that means but I read it somewhere). I think the most diffeicult one that I ever did was the Three pot XS750. That was a learning curve..

Anyway, as said I use the Pistons in barrells method and it workes for me.

It is Christmas eve. My greatgrandchildren are probably excited---I am really---well maybe. That said may I wish you all the compliments of the season and a healthy and prosperous New Year. My drinking days are over so I'll watch for Santa with a less glassy eye.

Please take care, this aint a dress rehearsal.

Mike 8) 8) 8) 8)

Dibble

You guys really are the best. I can't  wait till they make a tv docu on the BSAOC.
I'll persevere with the task in hand and hope for a happy new year! Please dont change!! Dave

EDDIE SIMPSON

once you have the rebuild skills working on your bsa you will never need breakdown services again and always manage to get home.
however you will need to carry spare mag, dynamo etc as well as tools with you. ha , ha.

Mike Farmer

 :) :) :)

Dont forget the waterproof sheet and the dangly down soaking wet woodbine (or a rolley) hanging uslessly out of the corner of your mouth.

Bugger really innit

Mike 8) 8) 8)