Steve.Morris
10 µW
- Joined
- Apr 17, 2019
- Messages
- 5
Hello;
Hey all - I've been lurking a while and learning about e-bikes. I've decided to do a DIY build and will be building up a BBSHD. I have a plan of action but I would like some feedback from all the other DIY'ers here. I've decided on a mid-drive because given my weight (see below) I fear I'd put excessive stress on the wheel, and chains are easier to replace than a wheel. I wanted to do the TSDZ2 for torque sensing but felt it might be too small for my weight/speed desire - and the BBS Ultra while very cool, is out of my budget for now (I've got my eye on a custom Titanium frame in the future).
First, about me and my commute:
Grand Total: $1,773
I do have a few questions for anyone who has the time and knowledge:
Thanks for your time and consideration!
Hey all - I've been lurking a while and learning about e-bikes. I've decided to do a DIY build and will be building up a BBSHD. I have a plan of action but I would like some feedback from all the other DIY'ers here. I've decided on a mid-drive because given my weight (see below) I fear I'd put excessive stress on the wheel, and chains are easier to replace than a wheel. I wanted to do the TSDZ2 for torque sensing but felt it might be too small for my weight/speed desire - and the BBS Ultra while very cool, is out of my budget for now (I've got my eye on a custom Titanium frame in the future).
First, about me and my commute:
- I'm an overweight new rider (280lbs) trying to get more exercise and lose weight.
- My commute is mostly bike-path and mostly downhill to work and uphill home.
- Trip is 12.5 miles one way (25 miles / 40.2km round trip)
- On a non-powered bike it takes me almost 1:15hr to get to work and over 2:15hr home
- I would like to commute to work in 35-45 minutes and have the return trip take the same time.
- I think with an average top speed of no less than 24mph I can accomplish this
- I plan to ride year round (maybe not ice/snow) - I live in the Pacific NW (USA) and it's wet/rainy here.
- I plan to pedal mostly, and only use throttle for emergency or early on when I'm still getting in shape.
- I plan to get skinny (er)
- I plan to stop using my car!
- Donor Bike - 2013 Giant XTC
- Changed tires to be 700c road tires
- Added cargo rack
- Will add fenders.
- Will buy e-bike chain
- Sub Total: $430
- BBSHD Kit from em3ev
- DCP14 Display
- Right Thumb Throttle Type 1
- E-brake Sensor for Hydraulic Brakes X 2
- 100mm BBSHD
- 30A Programming
- 46T Stock Chainwheel
- GearSensor
- 52V (14S6P) Hard-Case Triangle Pack with Smart BMS and Bag option
- 58.8V Charger (for 14S, 50/52V Battery) with 80/90/100 switch
- BBS02/HD Installation & Servicing Tool, from California Ebike
- Sub Total: $1293
- Adapter for Press Fit 41 / BB92 (one of these, unsure which)
Grand Total: $1,773
I do have a few questions for anyone who has the time and knowledge:
- What am I missing?
- Which Press Fit 41 / BB92 adapter is best (or worst)?
- Will my stock cassette hold up? Shimano HG62 11x36, 10-Speed
- Do you think my battery choice is big enough (or too big?) if I want to run it from 80% to 30% on a round trip commute?
- Does anyone have any experience with the em3ev triangle hard case? How does it mount? Is there any locking of it(keyed?)? Do you just place it in a bag or screw it down or..?
- Is it worth it to spend the extra $60 to get these instead of the sensors Shimano M355 Hydraulic Brake Levers Ebrake Sensor
- Should I order from LunaCycles or someone else? (I'm near the limit of my budget as is - but want to order from reputable business).
- Should I get the programming cable? I will probably run with stock settings initially, but I hear Karl's Special Sauce is worth using. Should I order the cable now, or wait until later.
- I'm a software engineer by trade and my dad (who'll be helping me) is an electrician - however we've never done this and are not bike mechanic savvy in any way - what do I need to know that I don't know? (I do know I'll either hammer out my old bearings or take it to my LBS and have 'em pressed out)
Thanks for your time and consideration!