General Category => Wheels & Tires => Topic started by: ltcps on November 07, 2013, 02:07:54 PM

Title: Are 21" rims used on Simplex?
Post by: ltcps on November 07, 2013, 02:07:54 PM
Do I remember correctly that they changed tire size ratings from the outside diameter of the mounted tire to the inside of the rim where the tipe  mounts? ie 21" instead or 26". This was the case on my moped if I remember right (been a LOOOOONG time).



I'd like to change wheelsto a spoke wheel with disk drake (or drum) on back and add a front tire with brake so I can stop.

Any suggestions?
Title: Re: Are 21" rims used on Simplex?
Post by: illMATTic on November 07, 2013, 05:05:50 PM
I am not sure of the exact measurement but it is identical to a standard 26" bicycle wheel. Any current wheelset would work. Go with Worksman rim hoops and hubs. They may even have a hub that will work with a disc.
Title: Re: Are 21" rims used on Simplex?
Post by: ltcps on November 09, 2013, 05:34:33 AM
I have talked to them and they say they don't. Has any body ordered a set from them? If so would you post the part numbers?

Thanks

Tom
Title: Re: Are 21" rims used on Simplex?
Post by: Bruce on November 09, 2013, 05:45:24 AM
If you're wanting disc brakes and are using 26" tires you could always get a 2008 whizzer ambassador wheel or one from the whizzer NER 2008...I have them on my ambassador... It out stops my other bike easily...cable brakes too so theyre easy to set up...Yould just need a small bracket welded on
Title: Re: Are 21" rims used on Simplex?
Post by: Bruce on November 09, 2013, 06:00:39 AM
I'll take pics in a bit
Title: Re: Are 21" rims used on Simplex?
Post by: Bruce on November 09, 2013, 07:09:44 AM
Here it is
Title: Re: Are 21" rims used on Simplex?
Post by: ltcps on November 11, 2013, 01:02:07 PM
Thanks a bunch. I'll look into it.
Title: Re: Are 21" rims used on Simplex?
Post by: illMATTic on November 12, 2013, 02:07:52 PM
Two Worksman wheels with a front drum brake on each will work as long as you do the axle conversion like I have.

Buy the wheels from worksman, buy the axles and bearings from treatland.tv and swap them out. Then, just add the drive sheave of your choice. Presto... you have the strongest wheels possible to run a Simplex tire.
Title: Re: Are 21" rims used on Simplex?
Post by: Mike Sal on November 12, 2013, 05:10:54 PM
On the way home from work tonight I saw a kid on what looked like a new bicycle.  It had the biggest tires I've ever seen on a bike on it.  I couldn't get a great look at it, but the tires definitely looked big enough for a motorbike (I wonder what the rim width was.....they had to larger than a regular bike).  Anybody seen any of these?  The bike didn't have any fenders, but looked very shiny as though it was a brand new purchase.
Mike Sal
Title: Re: Are 21" rims used on Simplex?
Post by: Ricks on November 12, 2013, 07:51:09 PM
On the way home from work tonight I saw a kid on what looked like a new bicycle.  It had the biggest tires I've ever seen on a bike on it.  I couldn't get a great look at it, but the tires definitely looked big enough for a motorbike (I wonder what the rim width was.....they had to larger than a regular bike).  Anybody seen any of these?  The bike didn't have any fenders, but looked very shiny as though it was a brand new purchase.
Mike Sal

Fat tire sand bike, maybe?

Title: Re: Are 21" rims used on Simplex?
Post by: Bruce on November 13, 2013, 04:37:45 AM
i think wallmart sells a fatbike...I think they have 4" tires and theyre not expensive
Title: Re: Are 21" rims used on Simplex?
Post by: Bruce on November 13, 2013, 03:28:33 PM
I wonder how they would do on a servi cycle... I was looking at the Walmart bike online and you tube videos ...the tires don't look bad and the white wheels are kinda cool(36 spoke).   I should slap one on the rear of my ambassador and try it...it has the room
Title: Re: Are 21" rims used on Simplex?
Post by: Bruce on November 13, 2013, 03:30:51 PM
Btw...the Walmart bike has a street tread...not like the knobby beach ones
Title: Re: Are 21" rims used on Simplex?
Post by: ltcps on November 15, 2013, 11:08:58 AM
Thanks a million for the Whizzer idea! I ordered 2 front wheels from them, a set of calipers and handle bars with all controls and cables for $200 plus shipping.

Great people to talk to.

Will let you know how it works out.

Any idea where to get arear sheath(?) pulley? they are out.
Title: Re: Are 21" rims used on Simplex?
Post by: Bruce on November 15, 2013, 02:52:40 PM
Yes....on eBay ...look up the sheaves and the seller "whizzerpaul"..there's some that pop up a little cheaper at times but I trust and use him. He's a good guy...tell him Bruce says hi
Title: Re: Are 21" rims used on Simplex?
Post by: Bruce on November 15, 2013, 02:53:33 PM
Btw....did you get disc brake wheels? Caliper?....oops! I see now...you got it all...I'm guessing whizzer usa in Texas? Debbie?.... You'll need to mount a small bracket for the caliper mount....I can get pics Sunday if you need....you'll like the wheels.... Btw you got a great deal
Title: Re: Are 21" rims used on Simplex?
Post by: oil-lamp on November 15, 2013, 04:44:32 PM
I've found 26'' rims that are 4'' wide and 36 hole and tires to match, I also thought I had found some 2.125'' X 26" w/ 36 hole aluminum rims from a group south of the border, but when they got here they were only 1.50''. What a ripoff but I did get my money back.
Title: Re: Are 21" rims used on Simplex?
Post by: pd on November 15, 2013, 07:11:56 PM
4 " ??? are we moving into car tires now ? ;)
Title: Re: Are 21" rims used on Simplex?
Post by: Bruce on November 16, 2013, 04:40:57 AM
I wanna see someone do it!   In all reality if the tires of equal quality... There's more there so it should hold up okay.  I'm gonna swing in Walmart and see if they have any so I can check em out up close... See if they sell the spares too
Title: Re: Are 21" rims used on Simplex?
Post by: ltcps on November 16, 2013, 07:02:59 AM
pictures of the caliper brackets would be appreciated
Title: Re: Are 21" rims used on Simplex?
Post by: Bruce on November 16, 2013, 04:17:56 PM
I'll take pics tommorow morning when I go to ride the bike with my friend
Title: Re: Are 21" rims used on Simplex?
Post by: Mike Sal on November 17, 2013, 10:21:59 AM
On our Victory motorcycle club website there's lots of chatter about the guys who are using car tires on the back of therie bikes.  They're called "dark siders".  The reason is car tires last 3 times longer than bike tires.  One guy mounted a video camera under his bike & then went for a ride on a curvy road to see how car tires handle on a bike.
Mike Sal
Title: Re: Are 21" rims used on Simplex?
Post by: pd on November 17, 2013, 10:33:10 AM
Mike ,

You can't just leave us hanging like that . Post the link to that video . Please .

That's like licking a dripping ice cream cone in front of a kid in 90° weather and telling him he can't have any . ;)

Pete . :)
Title: Re: Are 21" rims used on Simplex?
Post by: Ricks on November 17, 2013, 10:51:32 AM
Yeah Mike, what Pete says!!
Title: Re: Are 21" rims used on Simplex?
Post by: Mike Sal on November 17, 2013, 05:09:30 PM
I can't find the original link, but if you look up "going dark side on motorcycle" or "car tire on motorcycle" on youtube, you'll see several videos.  Kinda neat.
Mike Sal
Title: Re: Are 21" rims used on Simplex?
Post by: pd on November 17, 2013, 08:15:26 PM
Is this it Mike ?

http://www.youtube.com/watch?v=gZKhoFbL7Fo