Tires Moped tires??

[darwin]

Aside from the moped tire topic. I have 2 bikes right now, 1 26in wheels the other 700c wheels. I actually like the bike with the 700c wheels better. The feel and responsiveness just seems for a more enjoyable ride.......just my 2 cents. The Honda staton fd kit w/1-1/8th roller powers the 700c wheels nicely.

 

[5-7HEAVEN]

I bought this 3" x 21" dunlop tire. It's 26.625" diameter.

http://www.ebay.com/itm/Dunlop-D404-...576c2a&vxp=mtr

I measured my Diamondback cruiser frame to see if my Dunlop motorcycle tire would fit in the rear dropout. It's gonna be EXTREMELY tight in the rear frame!! Measurements were taken without the rim, but the tire is so stiff that the numbers should still be very accurate. I'm using measurements from my 2.35" x 26" Schwalbe rear tire as reference points on the frame.

The Dunlop 404 80/90-21 is the front tire for Harley Davidsons. It is 5/8" taller than my 26" tire and 3" wide. There is 5/16" clearance to the top fender bracket/cross brace, and 11/16" clearance to the front of the chainstay. Left side chainstay clearance is tight @ minus 1/16"+. Right side chain stay clears by 1/16"+". Left side seat stay clears by 1/8"; right side seat stay by 1/16"+.

Looks like the left-side chainstay and the right-side seat stay will need "clearancing". Since issues are on both sides of the dropout, the wheel cannot be "dished" to solve the problem.

Well, I won't be certain until I mount the motorcycle rim onto the bike's rear wheel hub and try to bolt it on the bike. I believe this is the smallest motorcycle tire available in 21" rim size (26.625" tire diameter).

This Dunlop tire won't fit my 28" Rockshox fork. Sooo, I'm getting a complete front end from a 1987 Suzuki RM125, including 21" wheel and hydraulic disc brake. The trick is to fit the Suzuki fork onto my bike. Then the Dunlop should mount on the RM125 wheel and bolt onto theRM125 fork, like it's meant to be.

and this tire is for the rear:

http://www.ebay.com/itm/2-75-21-Shin...285693&vxp=mtr

It's a 2.75" X 21" tire. Sadly, it's only available in offroad, trails, enduro or dual-purpose. The last choice looks like knobby mountain bike tires, but for motorcycles.

Using reference information, rear tire side clearances on my rear dropout should increase by 1/4" from the Dunlop's dimensions. The tightest left-side chainstay clearance would be ~1/8".
Looking better, might not need to clearance the rear dropout with a 2.75" x 21" m/c tire.

 

[chainmaker]

This is my Schwinn set up with 19 inch moped rims, the rear tire is 2.75 front 2.5

 

[5-7HEAVEN]

How tall and wide are those tires? Is the the Roadmaster cruiser frame?

How much clearance do you have in the rear dropout?

 

[IbedaYank]

17x3 24inch fork

 

[chainmaker]

How tall and wide are those tires? Is the the Roadmaster cruiser frame?

How much clearance do you have in the rear dropout?

The tires are about 24 inches tall and 2.75 wide in front and 3 in the rear. Had to go with a narrower tire in front to clear felt forks. It is a Schwinn Panther frame, if it was a road master there would be room for a 5 hp in there. The rear was widened to 135mm for a moped hub.
the build thread is here. http://www.motoredbikes.com/showthread.php?40090-Briggs-powered-Panther

 

[5-7HEAVEN]

My Shinko 2.75-21 rear tire arrived today. Funny, it measured 3" wide @ the outside "cleats". These cleats are @ the edge and sidewall of the tire, for offroading. Since I won't be doing that, I decided to "amputate" them.....all 184 of them. Eliminating them would narrow the tire from 3.00" to 2.5625" (2" and 9/16"). Thus, clearances would widen dramatically. One chainstay had MINUS .0625". Modifying the tire gives it approximately .+20" clearance. Other side seat stay will increase from .0625" to .2625". The other stays increase from .125" to .325".

Took me 1.5 hours to remove most of the rubber off of 184 rubber cleats. Actually it came off WAY too easy, which means that ALL of the tire's cleats are kinda soft. I hope the tire lasts me awhile before any cleats start ripping off.

It felt odd removing rubber off a brand new tire, much like how some track racers machine off part of the tread of a brand new racing tire. Sadly, this is the only way a 26" motorcycle tire will fit into my cruiser without "massaging" the dropout. There IS no smaller-size 26" tire I could find. My 3" X 21" Dunlop tire will fit perfectly in the motorcycle fork I'm gonna use on this bike.