Motorized Bicycle -  Engine Kit Forum  

Sponsors



Go Back   Motorized Bicycle - Engine Kit Forum > Electric Bicycle Forum E-Bike > DIY Electric Bicycle Hub Motors and Kits

DIY Electric Bicycle Hub Motors and Kits Electric motorized bicycle engine kits are clean, quiet, and efficient. Learn about electric bike range, speed and cost by sharing your experiences here.

Reply
 
Thread Tools Display Modes
  #1  
Old 01-04-2013, 03:14 AM
1dave1 1dave1 is offline
Motorized Bicycle Member
 
Join Date: Nov 2012
Location: San Diego
Posts: 35
Thanks: 0
Thanked 0 Times in 0 Posts
Default bought ebike kit and might have screwed up

hi,

I bought a 26 inch front wheel ebike kit (48v 1000w) and realized that my bike, a 2012 specialized cross trail, has 28 inch wheels.

I got such a good deal on this thing. Saved around 100 bucks. Do I need to return it? Can I just put 26 inch wheels on my rear and go w/ 26's? There are really two issues. One, will it work? Two, if it does, will the performance suffer?

Please, any advice will be appreciated.
Reply With Quote
Sponsored Links
  #2  
Old 01-04-2013, 03:55 AM
BarelyAWake's Avatar
BarelyAWake BarelyAWake is offline
Super Moderator
 
Join Date: Jul 2009
Location: Maine
Posts: 6,436
Thanks: 0
Thanked 47 Times in 35 Posts
Default Re: bought ebike kit and might have screwed up

Why not have your existing rim laced onto the ehub you've gotten? Specialized claims it's a "durable, double-walled 700c alloy rim" and a relace is usually only $40 at most...

It will take a custom spoke length due to the hub's size, but that's rarely an issue other'n wait time
Reply With Quote
  #3  
Old 01-04-2013, 04:22 AM
1dave1 1dave1 is offline
Motorized Bicycle Member
 
Join Date: Nov 2012
Location: San Diego
Posts: 35
Thanks: 0
Thanked 0 Times in 0 Posts
Default Re: bought ebike kit and might have screwed up

I could not find the size of the rim. I measured it and thought it was 28 inches. Its 700cc? Where did you find that? Whats the difference? I thought cc's was a measure of liquid.

That is an interesting idea and something I had not thought of. I would rather pay $40 for someone to place hub motor onto same rim. Is that something fairly doable at most bike shops you think?

Thanks for the input
Reply With Quote
  #4  
Old 01-04-2013, 04:29 AM
BarelyAWake's Avatar
BarelyAWake BarelyAWake is offline
Super Moderator
 
Join Date: Jul 2009
Location: Maine
Posts: 6,436
Thanks: 0
Thanked 47 Times in 35 Posts
Default Re: bought ebike kit and might have screwed up

No worries, I got the Specialized info here: http://www.specialized.com/us/en/bik...ail/crosstrail & there's far too much info regarding rim sizes here: http://sheldonbrown.com/tire-sizing.html - but I'd not sweat the details, it's more than fairly doable - I've had a coupla hub motors relaced onto different rims as the stock rims included w/the hubs aren't always the best, or simply don't match what I've got lol

I'd jus' bring the ehub & the rim you want into your local bike shop, due to the custom length spokes the math gets tricky - but that's what they get paid for
Reply With Quote
  #5  
Old 01-04-2013, 12:19 PM
Mike B's Avatar
Mike B Mike B is online now
Motorized Bicycle Elite Member
 
Join Date: Mar 2011
Location: US
Posts: 1,219
Thanks: 0
Thanked 4 Times in 4 Posts
Default Re: bought ebike kit and might have screwed up

I got mine done for $40, but I had to buy the spokes.

So $80 for me.

The cool thing is you can cross a 700C wheel.

__________________
The only thing in my garage with 4 wheels is the lawnmower
Reply With Quote
  #6  
Old 01-04-2013, 02:09 PM
paul's Avatar
paul paul is offline
Administrator
 
Join Date: Dec 2007
Location: St. Croix US Virgin Islands
Posts: 5,469
Thanks: 8
Thanked 66 Times in 40 Posts
Default Re: bought ebike kit and might have screwed up

i was able to get mine done way out here in the middle of the atlantic. any bicycle shop should be able to do it for you. i used an alex da 16 rim and ordered stainless black spokes for it
Attached Thumbnails
Click image for larger version

Name:	photo(10).JPG
Views:	12
Size:	281.4 KB
ID:	55008  
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 08:04 PM.


Sponsors

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2013, vBulletin Solutions, Inc.
Motorized Bicycle - Engine Kit Forum