It's the brake that puzzles me. It looks weird in the photo.
Generally, you should aim for a right angle between the arm and the bit that goes on the axle. If they're more or less in line, it can't work properly. I'd drill a hole in the arm in line with the mudguard stay hole and fix it there. If it's a good arm, you need a 5% cobalt drill to drill it. Your arm is sitting on both the axle and the derailleur, so it can't go any further and is OK like that, but I'm wondering if it got like that because the axle has already moved. Did you install it like that?
Also the back tyre on that bike isn't fully on the rim in the area of the brake. You need to pump it up a lot harder until it pops on or let it down, put some lube on it and try again.
All my comments about the weird front brake, tyre and torque arm relate to the photo in post#34. Please don't think I'm hating you or your bike. I only want you to have a safe and enjoyable riding experience.
I understand what your saying about the 90 degree angle and I will address this over the winter.
Yes I installed it like that as this was all new to me and my first build.
Both tyres have now been replaced and the cable comes out of the bottom of the axle.
I will get some more photos of the bike at the weekend and post them.
I use my Specialized to go out with my wife on her Pinnacle at weekends, we really enjoy the trips out as we live on the Northumberland coast, We do about 20 miles per trip, mainly through cycle paths through the woods to the coast at Newbiggin by the sea. I'm in my 60's and really enjoy just looking at the scenery and stuff you wouldn't see if you weren't on a bike.
We do have to go on the roads/ footpaths at times but stick to the 15mph allowed or less. Any faster and you miss everything around you, I suppose that's why the cops don't even look at us.
Top speed for both is 30+ mph, my car can do 130mph.
Have I gone that speed? No.
Nice to have the power to hand just in case. HAHAHA