Mike Waller builds an Enfield Bullet Works Trials Replica.

Pat Brittian Riding the late Jim Pickerings Enfield Bullet at the Colmore Revisitation.......

After what seems like years of waiting Mike has finally started the build of the first of two Enfield trials bikes...

 We will over the following months follow the progress of these builds. And know doubt like in the last BSA series I will be throwing my two peneth in If I see that there is a problem, or me just liking to stick my nose in..

Any way here is episode one and I will build on this page later with photos etc..

 

 

 

Episode One of the Replica build.

 

More later.

 

Widening the rear hub...

 

 

The three parts.

 

 

Cut line and spoke line up centre dots.

 

 

 

Three parts tacked up on the lathe to get them true...

 

 

Welded all around and then machine faced back up on the lathe.

 

There you go Mike.

 

PS I used a GT swinging arm on the Crusader...

 

 

The Crusader with a GT swinging arm the one that came with the frame was too narrow at the front.....

 

 

A local Royal Enfield to where they were built originally at Redditch...

 This shot at Henley-in-Arden.. Shakespeare country.

 

 

And the other side of the bike...

There are other Enfields on the "Seven Best Enfield builds" page Mike...

 

Episode Two...

 The Front D3 Bantam hub made wider...

Click the full screen icon for a better view...

 

 

Nice one Mike...

 

I remember a very long time ago joining two of the Bantam D3 front hubs together to make a twin sided front brake for a racing Bantam... I don't think we ever got around to fitting it though... Same principle of doing the job though...

 

Episode Three Hubs again...

 

 

Another good one Mike... So Professional got...

 I must say I hate being disturbed when cutting threads ... Missing the feed number, or tripping it too late at the end of the run ...and the job is ruined...

 I was worried the spacer tube would turn on the spindle when in the lathe and move the thread position... Was it a pressed fit? or had you spotted it with Bronze?

 

Mike**>>

Now you have me confused. I was on your page, of course, and you mentioned the centre spacer turning when I was threading the rear spindle. I didn't use a centre spacer for the rear, I turned down 3/4" so that I had shoulders as on the original. At least I think that is what you were referring to.

 

Charlie~Oo>

Sorry Mike... That will teach me to try and do emails and watch the Prog at the same time.

I have done the exercise and used a spacer in the past, and that was in my mind...

 The spacer did have to have really fine ends to take the bearings, and that was not good practice so I straight away went back to the original concept like you have done, but did take a bit from the centre of the spindle to save weight.. but I don't know why ... just copying the original...

Perhaps we should explain a "Spring Cut" that means that you run the tool back over the work at the same setting as the last cut , as there is always tension in the cutting tool especially a "Boring Bar" to make holes bigger... and this pressure takes a bit more off the next pass... will that do Mike?

 

Thanks for the info on the Chinese "TW "trial bike that will be on that page...

 

Episode Four already...

Steering head and swinging arm... 

 

 

 

Sorry Mike, I forgot to tell you that you have to jack the frame apart to get the swinging arm out easily... and thanks for the TW vid...

 

Episode Five.

 Engine -gearbox frame plates...

 

 

Bit of deja-vu.. here Mike...

 Was doing the same thing on the Bridgeport on Friday...

 Mini-Otter engine plates...

 I must say I have trouble with engine plates what ever they are for...

 there is always one hole that does not line up even if they are both the same...

 BSA's seem worse.. but you know what the tolerances were and are like on them...

Much More later....

We have just had a week end.. with about as much rain as you seem to be having while recording...

 Had a lot more interest on the Tenaci-Wong... Looks like we may be getting one to test... Should I keep it?

 

Episode Six...

 

 A lot of Maths and welding on footrests.

 

 

 

Mike I always think it best to weld on the sidewalls of a bend as the area is not so stressed, as is the outside radios of the bend. 

 I think Metiesse used to do this with their engine mountings etc...

The sprockets designed for the Triumph Cub/BSA Bantam hubs have the  face machined out for the back plate...

 

More Later...