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Many drills died in the making of that until I bought Dewalt Extreme 2 bits.

There's no retainer bar on those guide pulleys. A simple bit of round bar across the back of the chain where it meshes with the pulleys would prevent the chain coming off.

I'm wondering why it runs a jackshaft. I can't see any reason for it to do so. It just adds weight and complexity, plus as said, the sigle side mounting of those parts is flex prone. Is it 1 wheel drive or a solid rear axle?

I went through two Clarkes before I bought a secondhand Cebora. I've had that about a quarter of a century without issue. Stainless makes decent beams but is very hard on drills. Buy only the best drills. I did my last tilting trike with stainless.

A taddy should have resistance to steering but not so much you are pushing hard. It should want to self centre and that is the force you are overcoming. If it requires a lot of grunt then it's likely that the leverage is poor leaving you with little actual movement at the top of the lever or the...

Different. At first glance it looks back to front. The openings through which you can see the knees look like side windows for viewing out.

I would think the Viking was one of the least likely candidates for being made in aluminium. Aluminium makes terrible beams and that's a long one holding two people.

Hub motors are often laced in with thicker spokes than usual which should help.

Not just you but mee too with no pictures.

Sun rims are excellent. I have a pair of Sun Black Label triple box after cheaper rims taccoed on me. 32h may be a bit short on spokes though given two people. I'd have opted for 36h but only because 48h are not made in 20mm (that I've seen). These rims and hubs were never designed with side...

What size, with or without a cassette or freewheel facility and why a hub motor? Why not a mid drive? 28mph is a very specific speed - I've never heard of wheels rated by speed but by wattage. Generally you need 1000W to hit about 30mph. I wouldn't want to do that on a high narrow delta. Tell us...

I've used these no-name ones before. They work perfectly well...

I'm old and fat and 45 degrees is more comfortable for me than 80. If I put out twice the power I do 45 degrees would not be any issue

If it drove ok on 1 1800w driving one wheel then driving with 1200w difference should be ok too.

Welding aluminium is a job for the more expensive welders. An AC tig is the ideal but an AC mig can work too. The problem with a recumbent chassis is it is used as a beam. Aluminium makes poor beams. It doesn't bend but does fatigue and crack. Regular diamond frame bikes are perfect engineering...

For an idea of length of such a machine look at the streetfighter design. Now add in 3" of extra rear wheel diameter and then slide those wheels back until they fit behind the seat. There may be a couple of inch to play with at the front but the only way to shorten it a lot is to go wide enough...

Having two rear wheels close together does little for extra stability over 1 rear wheel so you really ought to still be between the front wheels for best stability. However you are going long wheelbase with the pedals behind the front axle meaning you are sitting close to the rear wheels which...

If you are building something near 50kg you will need to be in s very flat area and/or will need electrical assistance. Trying to pedal such weight uphill will be a killer even for a young person in top fitness. You will need a lot of gears with very low gearing to even begin to shift it. I...

A good result there Danny.

This forum is, in large part, a meeting place for coffin dodgers. Very few of us are able to remember a time when we had hair, teeth, flat stomachs, no aches and pains etc.