A series of questions to get me going.

[andy]

Thanks Spoonman and Frodus.
Frodus, I replied to you on your for sale post.

[andy]

Thanks Spoonman and Frodus.
Frodus, I replied to you on your for sale post.

[andy]

I have been been very neglectful to my project.
I have bought a house and convinced someone to marry me in the two and a half years since I last updated here (so time hasn't been a complete waste).
I have also built a garage (no electricity hopefully this coming year), but i have moved the bike to the centre of the garage and will try to understand where I left off.

[Stevo]

Congrats and goodluck with both endeavors

[nedfunnell]

Cheers! Good luck!

[bigpie]

Did you get stung for import duty?

[andy]

I honestly cannot remember.
It was back in May 2015 after all.
I think I did but i can't swear to it either way.
Are you in Ireland bigpie ?

[andy]

no money coming up to Christmas, but I've got the bug again so I'm remaking the controller plate higher up so batteries can be lower.
I'm also considering a 20s1p pack using these guys (sometime in the coming year).
https://hobbyking.com/en_us/turnigy-...ngle-cell.html
not much range but at least ill be moving.

pics of new controller plate template to follow.

[andy]

Anyone use one of these ?
https://www.electricmotorsport.com/e...-120w-10a.html

I am looking for a DC-DC converter.

[frodus]

Haven't used one of those before. You're right at the top (84V peak on 4.2v a cell and 20 cells), so if you add any later, you'll have to get another DC-DC.

The thing I'm more concerned about, is that it's not isolated. This means that your 12V system ground is the same as your Pack ground, so if you're leaning against anything that is grounded on the 12V system, and touch B+, you might get a little surprise shock.

Maybe consider something like one of these:
http://www.emf-power.com/product/sev...-dc-converter/

I can knock a few off for you.