Motorized Bicycle Engine Kit Forum  

Sponsors



Go Back   Motorized Bicycle Engine Kit Forum > Motorized Bicycle > Motorized Bicycle General Discussion

Motorized Bicycle General Discussion All topics regarding bicycles with engines.

Reply
 
Thread Tools Display Modes
  #3101  
Old 02-13-2012, 12:18 PM
5-7HEAVEN 5-7HEAVEN is offline
Motorized Bicycle Elite Member
 
Join Date: Aug 2008
Posts: 1,971
Default Re: what did you do to your motor bike today?

Well, the new wheels and cassette transferred to the bike easily. Brake adjustments were done. I'll be ordering new AVID BB7 brake pads soon.

I removed the HD freewheel for servicing. However the spare freewheel's mounting holes are too small, so I'll need special drill bits to enlarge the mounting holes.
Reply With Quote
  #3102  
Old 02-13-2012, 02:53 PM
SlowJoe SlowJoe is offline
Motorized Bicycle Newbie
 
Join Date: Feb 2012
Location: Vista, California
Posts: 15
Default Re: what did you do to your motor bike today?

Made a mount for my iPOD touch to record video. There is a light drizzle here, Maybe it will dry up and I can get a ride in. If not today, Then dry and sunny forecast for the rest of the week.
Reply With Quote
  #3103  
Old 02-13-2012, 03:03 PM
Sinistar Sinistar is offline
Motorized Bicycle Senior Member
 
Join Date: Dec 2011
Location: Memphis TN
Posts: 70
Default Re: what did you do to your motor bike today?

I got my new CDI and Magneto set them up and also made a new exhaust with use of a new Briggs and Straton 6" long muffler 1/2" diameter. inlet used some Home Depot elbows and pipe pieces too make my routing set them with allitle jb weld and I put a piece of wood between my frame and the muffler used mega zipties. The wood works very well to absorb lots of the vibrations and i used some rubber also and its tied in place very securely. I love it and it's so smooth when I ride.

Cheers,
Reply With Quote
  #3104  
Old 02-13-2012, 08:18 PM
5-7HEAVEN 5-7HEAVEN is offline
Motorized Bicycle Elite Member
 
Join Date: Aug 2008
Posts: 1,971
Default Re: what did you do to your motor bike today?

I bought this NOS Diamondback steel cruiser frame for $31 on ebay:

http://www.ebay.com/itm/ws/eBayISAPI...m=200709443729

It has guides for rear v-brakes and 7-speed derailleur.

What a deal!

Hopefully, my 6hp Robin/Subaru OHC engine fits w/little problems. I'm shooting for 29" ROCKSHOX fork, 29" Schwalbe Big Apple front tire, 26" Big Apple rear, disc brakes, 7-speed derailleur and shift kit. If the cassette fails, then maybe a NuVinci hub.

Last edited by 5-7HEAVEN; 02-13-2012 at 09:15 PM.
Reply With Quote
  #3105  
Old 02-14-2012, 07:58 AM
The_Aleman's Avatar
The_Aleman The_Aleman is offline
Motorized Bicycle Elite Member
 
Join Date: Jul 2008
Location: el People's Republik de Kalifornistan
Posts: 2,658
Default Re: what did you do to your motor bike today?

Nice frame, 5-7. However, I don't think those guides are for a derailleur. There seems to be no derailleur mount on that frame.
Looks like guides for an internal hub's shifter cable. Although, one doesn't often see internal-hub bikes with V-brakes...
__________________
Meh.
Reply With Quote
  #3106  
Old 02-14-2012, 03:45 PM
Skarrd's Avatar
Skarrd Skarrd is offline
Motorized Bicycle Elite Member
 
Join Date: Oct 2010
Location: Chandler, AZ
Posts: 495
Default Re: what did you do to your motor bike today?

Got a 40t #25 gear in today for the pocket bike jackshaft.

6t-40t = ~6.67:1 reduction
10t-44t = 4.40:1
40t-28t = .70:1
final drive in 1st gear = 20.53:1

should work out for some nice gearing.
__________________
They see me rollin'
they hatin'


Quote:
Originally Posted by biknut View Post
Traditional bicycle riders think we're cheaters. Non riders think our bikes are toys. Bicycle shops think we're a threat. Tree huggers think we're polluters. The police don't know what to think.
Reply With Quote
  #3107  
Old 02-14-2012, 06:58 PM
DaveC's Avatar
DaveC DaveC is offline
Motorized Bicycle Elite Member
 
Join Date: Jul 2010
Location: Boise, ID
Posts: 970
Default Re: what did you do to your motor bike today?

Quote:
Originally Posted by 5-7HEAVEN View Post
I bought this NOS Diamondback steel cruiser frame for $31 on ebay:

http://www.ebay.com/itm/ws/eBayISAPI...m=200709443729

It has guides for rear v-brakes and 7-speed derailleur.

What a deal!

Hopefully, my 6hp Robin/Subaru OHC engine fits w/little problems. I'm shooting for 29" ROCKSHOX fork, 29" Schwalbe Big Apple front tire, 26" Big Apple rear, disc brakes, 7-speed derailleur and shift kit. If the cassette fails, then maybe a NuVinci hub.

$31 might have been the bid you won at but $92 for shipping needs to be added in, too Is it that expensive to ship to Hawaii? Or did the seller stab you on the shipping? I know that some sellers add their minimum to the shipping but that just seems a bit much

Now, onto my bike

I'm trying to figure out how to position the motor in the frame to measure and make templates for the motor mount plates to be welded to the frame. The lower mount will use the lower mounting holes on the S5 N Morini. They will be welded to the seat post and lower frame wqith the head lug attached to the top bar along with a mount for the expansion chamber. All I can think of is laying the bike on it's sode on a old sleeping bag and use old blankets to position the parts in the right place. I'll cut the templated from some poster board I have and transfer the design to steel to be cut with a plasma cutter.

I'll post in my thread about the build
Reply With Quote
  #3108  
Old 02-14-2012, 07:47 PM
happycheapskate's Avatar
happycheapskate happycheapskate is offline
Motorized Bicycle Elite Member
 
Join Date: Nov 2009
Location: Rockwall TX
Posts: 1,992
Arrow Re: what did you do to your motor bike today?

A lot of low-end bikes use a rear derailleur with its own hanger built in. (usually found on bikes with long horizontal dropouts, using a solid axle).

http://www.niagaracycle.com/images/jbimages/26427sm.jpg

You can get one for $5-15 here (great replacements for kids bikes, clunkers, work bikes, and conversions to rear shifting)
http://www.niagaracycle.com/index.ph...er_id=&sort=3a

Quote:
Originally Posted by The_Aleman View Post
Nice frame, 5-7. However, I don't think those guides are for a derailleur. There seems to be no derailleur mount on that frame.
Looks like guides for an internal hub's shifter cable. Although, one doesn't often see internal-hub bikes with V-brakes...
__________________
1" roller Dax Friction Drive and Tanaka 3300 with mods.
Reply With Quote
  #3109  
Old 02-14-2012, 09:44 PM
MEASURE TWICE MEASURE TWICE is offline
Motorized Bicycle Elite Member
 
Join Date: Jul 2010
Location: CA
Posts: 1,897
Default Re: what did you do to your motor bike today?

On my Briggs bike coming together I cleaned out the gunk in the pawl clutch of the recoil starter. Last time I was adjusting the point gap and was testing it, I had not known why it would not start up after one of those loud screeches from the pawl clutch. It was late and all I checked was the spark and there was none. So since it was screeching now and then too often it all came apart and degreased and relubed.

Of course when I took off the flywheel to get to the points after cleaning the pawl clutch, I saw I had two pieces key. Yep enough force from the engine trying to spin the recoil spring tight and throw the pull cord out at me had the key shear. It did so very clean. No scratches on the keyway and I scrounged up another from an old engine lying around. I will keep extras on hand though; the ones for my centrifugal clutch and jackshaft are not the same dimensions.

I also was getting the point gap set right and it usually takes two or three tries. I got it a little better, but at high throttle not smooth and looses power. I made the gap a little wider from last time and will do that again. After that if it gets still better fine. If it gets worse, then I'll go the other way but just very little to zone in on it for best overall running at all speeds. No carb adjustments for the one I have since I switched from the vacujet to bowl type gravity feed from higher tank.

The idle adjust part of my home made throttle linkages I got set so it idles nice. With the final adjust of points, I can get back to hooking up brake and twist throttle cables. The jackshaft and belts try out and give it a ride soon.

MT

One other note, I found that initially putting the cover back on the pawl clutch, had the rubber gasket in upside down. It will not spin smooth that way. The ridge in the gasket faces out as in the middle picture shows.
Attached Images
File Type: jpg IMG07013-20120214-1448.JPG (395.8 KB, 34 views)
File Type: jpg IMG07021-20120214-1556.JPG (457.8 KB, 36 views)
File Type: jpg IMG04342-20110713-2330.JPG (449.5 KB, 42 views)

Last edited by MEASURE TWICE; 02-14-2012 at 09:50 PM.
Reply With Quote
  #3110  
Old 02-14-2012, 10:17 PM
andrewflores17's Avatar
andrewflores17 andrewflores17 is offline
Motorized Bicycle Elite Member
 
Join Date: Jul 2010
Location: colorado springs, CO
Posts: 479
Default Re: what did you do to your motor bike today?

took mine for a spin had to try out the new cafe racer look i know it dosent realy go any faster but id be lyeing if i didnt say it felt like it did .

everything went perfectly even used the handlebars to get that ultimate streamline look .
__________________
Great bikes are built not Bought

http://motorbicycling.com/showthread.php?t=34006 Link to INFIDEL 99cc predator build
http://motorbicycling.com/showthread.php?t=39541Link to Recumbent golden eagle build
Reply With Quote
Reply

Tags
clutch, motorized bicycle, oil, tensioner

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 10:29 AM.


Sponsors

Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
MotorBicycling.com