Hi all, Build your own EMTB

[iamdwarfman]

Buying from the shop isn't the only way. Build your own, It's cheap fast and fun.

 

[Dax]

I've looked at it before, but couldn't find a bike with a steep enough down tube to give reasonable clearance for a mid drive motor and have enough space in the triangle for batteries. Not convinced it's particularly cheap, I was looking at £1000 or so for a bbs-hd and batteries, £1000 for a bike and probably £500-1000 of parts to upgrade the bike to something I would consider riding.

 

[R120]

Problem is a conversion cant hold a candle to a decent OEM E-MTB for serious riding. I do wish there where more frames options though, where you can buy the frame and motor/battery and build it up yourself.

 

[iamdwarfman]

I've looked at it before, but couldn't find a bike with a steep enough down tube to give reasonable clearance for a mid drive motor and have enough space in the triangle for batteries. Not convinced it's particularly cheap, I was looking at £1000 or so for a bbs-hd and batteries, £1000 for a bike and probably £500-1000 of parts to upgrade the bike to something I would consider riding.

I've looked at it before, but couldn't find a bike with a steep enough down tube to give reasonable clearance for a mid drive motor and have enough space in the triangle for batteries. Not convinced it's particularly cheap, I was looking at £1000 or so for a bbs-hd and batteries, £1000 for a bike and probably £500-1000 of parts to upgrade the bike to something I would consider riding.

I have just priced a 60v 3000w mid drive kit with batteries and inc delivery it would come to £1250 ish using lipos. with 16ah . I picked up an old banshee scream ( real heavy duty frame ) and smash through the countryside Np. I am on building a light wight specialized at the moment using BB mount Cyclone motor it does not come lower than the chain ring , not like the bafang + I have never hit a rock with my motor yet and have had 6 Years of trying .

 

[MarkH]

I've considers converting a fat bike I've got lying around so the wife could use it. But I know I wouldn't have the time to build it and she probably wouldn't use it anyhow.

 

[MattyB]

Buying from the shop isn't the only way. Build your own, It's cheap fast and fun.

And in public places based on your 3kw example above, illegal.

 

[iamdwarfman]

using my Bluetooth controller I restrict the motor to 250w and limit it to 15 mph in public.
Still better than paying 3 to 6 k for something that has no range.

 

[Al Boneta]

using my Bluetooth controller I restrict the motor to 250w and limit it to 15 mph in public.
Still better than paying 3 to 6 k for something that has no range.

View attachment 4581

So did this end up winning the science fair?

 

[iamdwarfman]

So did this end up winning the science fair?

I'm 58 and all out of sarcasm, so here's a couple of pictures of my controllers program
.

 

[Al Boneta]

I'm 58 and all out of sarcasm, so here's a couple of pictures of my controllers program
.

View attachment 4587

View attachment 4588

That’s pretty cool. I’d probably prefer something a little bigger so I could ride, post on the forum, and watch Police Academy 4 all at the same time

 

[Dax]

That’s pretty cool. I’d probably prefer something a little bigger so I could ride, post on the forum, and watch Police Academy 4 all at the same time

Which one was 4?

 

[Al Boneta]

Which one was 4?

Citizens on Patrol

 

[Dax]

Citizens on Patrol

Of course, that's a classic. I guess this evening is a great time to find out if the missus likes Police Academy

 

[Al Boneta]

Of course, that's a classic. I guess this evening is a great time to find out if the missus likes Police Academy

It’s never a good time to find out if the missus likes Police Academy.

 

[Tucker]

Buying from the shop isn't the only way. Build your own, It's cheap fast and fun.

good effort on the build dude, your bike looks nuts, it wouldn't work for what i do but i can appreciate the work that's gone in.

 

[iamdwarfman]

I've looked at it before, but couldn't find a bike with a steep enough down tube to give reasonable clearance for a mid drive motor and have enough space in the triangle for batteries. Not convinced it's particularly cheap, I was looking at £1000 or so for a bbs-hd and batteries, £1000 for a bike and probably £500-1000 of parts to upgrade the bike to something I would consider riding.

I have knocked up a battery box for a specialized you could get 20ah at 34v in it. I stuck on youtube it didn't realy detract from the

That’s pretty cool. I’d probably prefer something a little bigger so I could ride, post on the forum, and watch Police Academy 4 all at the same time

I keep a copy of Up in Smoke, just in case.

 

[Al Boneta]

I have knocked up a battery box for a specialized you could get 20ah at 34v in it. I stuck on youtube it didn't realy detract from the

I keep a copy of Up in Smoke, just in case.

A wise choice sir, a very wise choice indeed

 

[Basy]

I've got a Bafang BBSHD on a Ragley Mmmbop. The fit is great (much better than most frames I've tried) because of the rear stay. The chainline is a little out though but if you're gentle when changing up it's fine.

 

[larryvaan]

I've got a Bafang BBSHD on a Ragley Mmmbop. The fit is great (much better than most frames I've tried) because of the rear stay. The chainline is a little out though but if you're gentle when changing up

It's a while from your post, but is your bbshd 68-73mm model?

What do you think, will the 42T chainring fit Ragley frame.

I am looking for a hardtail frame for bbshd. I allready have motor and chainring. Ragley seems interesting.

 

[Paulquattro]

Welcome to the site.