suprtek
Ruckster
My wife thinks my Ruckus was a "sacrifice"!
Posts: 271
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Post by suprtek on May 30, 2006 19:30:17 GMT -5
I thought they looked narrow too but it kind of looks like they will expand once they are inflated.
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Post by jrcanoe on May 30, 2006 19:33:17 GMT -5
A little narrow, I hope they ride well. It just looks narrow in the pic because it's not mounted and full of air.
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Post by Kami no Chiizu on May 30, 2006 20:06:21 GMT -5
Duh.
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Post by Dandy Dan on May 31, 2006 8:38:24 GMT -5
I updated the main page with the pics and names of Jrcanoes new tires along with all the stuff Mista posted. I checked into the Tires Mista posted and the sizing checked out! Thanks Mista ;D
This thread is a pretty sweet resource...we're up to 29 different tires plus some of those tires come in different colours.
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Post by smoove314 on Jun 1, 2006 21:41:51 GMT -5
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Post by Dandy Dan on Jun 2, 2006 9:00:10 GMT -5
Welcome to Ruckus Central ;D Thanks for sharing that link
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Post by ZOOMER46 on Jul 11, 2006 13:12:52 GMT -5
dandy ,you said once that it is possible to use 140/ 90 /10 tyres on the back to aid gearing up the bike,
do you know if this is an easy size to get on most brands of tyre for the ruckus.
especially the boppper.
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Post by Dandy Dan on Jul 11, 2006 13:29:57 GMT -5
A 140/90-10 is going to be wider and taller than the stock tire but I THINK it will fit. That does depend on a few things though like your rim (the skinnier Dio rims make your tires skinnier so it's more likely to fit if you're using these rims) and your rear shock (aftermarket shocks are fatter as so there's less clearance. If you have less than 1/4" clearance don't try a 140/90 because a 140 is 10mm wider than a 130/90 which is about 1/5" on each side.
Regarding the gearing, the circumference of a 140/90-10 tire is 62.8" whereas a 130/90 tire is 60.3" around which means a 140/90-10 tires is 4.2% taller. This is a moderate yet noticable difference for your Euro guys and it would raise your redline speed by about 2mph.
In your case though zoomer46 with your Polini variator and the Metro overrange gears you've already got plenty of gearing options. If you use all 3 metro gears you'll be geared perhaps too tall (you might only want to use the last one) so a 140/90 tire doesn't really seem necessary unless you like the look.
Anyways, 140/90-10 tires are pretty rare. Most companies don't make them (did I mention any on the first page of this thread who do?) and I think there's only a couple out there. If you google search '140/90-10' and check what comes up then you'll have a better idea. I checked the Bopper and I'm pretty sure you can't get it in a 140/90-10.
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Post by ZOOMER46 on Jul 11, 2006 13:43:34 GMT -5
well thats as detailed as i could possibly need.
i have time on my side,as the tyres only have around 1550 miles on them.
sounds like a close call on clearance,do we know anyone who has tried the 140 option.?
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Post by Dandy Dan on Jul 11, 2006 14:31:52 GMT -5
I don't know anyone who has tried it. Probably because there aren't that many tires out there and people usually choose based on the tire model, not on the size.
A 140/90 tire is 140mm wide and 126mm tall (140 * 90%) and a 130/90 is 130mm wide and 115mm tall so we're looking at a tire that's 5mm wider on each side and 5.5mm taller in radius.
I don't think the radius is a big deal because I think there's more than 5mm of clearance between the rear tire and the fender and the back of the engine so it's really the width. I imagine the closest point to the rear tire is probably the airbox and rear shock but I think these will be fine too unless you've got an aftermarket rear shock. Realistically, the only thing I can think of that has a reasonable chance of hitting is an aftermarket rear shock. This is especially likely to happen if you use a non Honda specific shock that isn't offset in it's mounts. Honda shocks are positioned close to the wheel on purpose by Honda so the coil is a bit offset in the mounts stock and on the Honda specific aftermarket shocks but if you use a BMF airshock or a Yamaha shock you're not gonna have much if any clearance even on a 130/90.
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Post by ZOOMER46 on Jul 13, 2006 17:58:39 GMT -5
good point bout the shock being close to the tyre,never really looked at it that closely.
explains why the standard shock is so skinny, i think the springless shock could be the answer here. (airshock)? the airbox will be removed anyways ,so not too worried there, as k n's should be on eventually.
if as it ends up that i get close to 50mph,but not quite , then getting the tyre would be the way to get the last bit.
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Post by Dandy Dan on Jul 14, 2006 9:52:23 GMT -5
An airshock might be the solution or you could just put a 140/90 tire on a 10" Honda Dio rim because the Dio rims are skinnier (2.15" wide instead of 3") so they pull the tire a little narrower. Timberwolfmadcat has an airshock but he doesn't have much clearance with his stock rear tire. It really depends on the width of the airshock. A Honda specific airshock would likely work fine.
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Post by wickedsf on Oct 19, 2006 16:37:37 GMT -5
I know you guys are tech wizards on this forum. My question is about the front tire. I understand that changing the size affect the speedo. Do you have idea on how the tire size affect the speedo change?
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Post by chanito on Oct 19, 2006 20:51:59 GMT -5
You need to find the circumference of the tires and then use both to figure out a ratio (like stocktire circuference/aftermarket tire circunference) and use the same ratio for the speedo
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Post by Dandy Dan on Oct 20, 2006 8:40:11 GMT -5
Do you have idea on how the tire size affect the speedo change? There's a wire in a sleeve coming from the front wheel that screws into the bottom of your speedometer. I'm not totally sure how the gear in the front rim works but basically, as the rim spins the wire spins inside the sleeve which turns something up in the speedo that turns your needle. It's all totally mechanically, with your scooter off you can push it and the speedo needle will move. When you change to an aftermarket tire, your speedo won't know that you changed the tire because it's just based on how fast the rim is spinning so it thinks if your rim speed is the same then your actual speed must be. Does that make sense? Basically, every time your front wheel spins, the speedo thinks you've driven about 57 inches with the stock tire but if you put a tiny front tire on then the circumference is less so you still can ride one rotation but now it might only be 53 inches. To actually calculate how off your speedo will be, measure the circumference of your stock tire (ie. 57") and then measure the circumference of the new tire (ie. 53"). Then divide the new by the old (53/57 = 0.92) which means that your actual new speed is only 92% of what your speedo is reading so if your speedo is reading 40mph then you're actually only going 36.8mph. Then occurs because now that your front wheel is smaller, it needs to spin faster for a certain MPH which causes your speedo to have an artificially high reading. Or, you could put a bigger front tire on which would cause the rim to spin slower so your speedo would read artifically low but the equation is the same. If your new tire circumference was 60" then it'd just be 60/57 = 1.05 = 105% so if your speedo is reading 40mph then you're actually going 42mph. Make sure both tires are properly inflated to 25psi before you measure them. And if you're sitting on the bike for one, then sit on it for both because your weight sets off the circumference a bit. Just keep the conditions the same for both measurements and you'll be fine.
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Post by I Heard A Rukus on Oct 27, 2006 12:46:14 GMT -5
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Post by Dandy Dan on Oct 30, 2006 9:03:41 GMT -5
That is a nice sale! I actually went with some Kenda K413's which are decent because they were on sale ($35 Cdn = $30 US) each this summer and they still have another season in them though. Someone should pick these up though...to my knowledge, no one has em on a Ruck.
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Post by I Heard A Rukus on Oct 30, 2006 13:41:14 GMT -5
DO NOT TEMPT ME!! I'm running out of things to spend money on. My next idea was tires/rims but I can't justify the $1400..... I really want new bars/stem but again I can't find one that I love or even like for the money....
KP
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Post by tuesdayclub on Feb 21, 2007 10:31:35 GMT -5
Beautiful list.....Thank you, I now understand a whole lot better
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Post by buchhla on Feb 27, 2007 22:28:08 GMT -5
I just finished my first ride home in the rain on my new pair of pirelli SL26's and they are great. I am still waiting for some warm dry weather to play around and see how they feel while taking some corners, but my wet traction seems slightly better than the stock tires and I also gained an extra 1-2 MPH top speed with them...
Pulling the old ones off and setting the new ones by hand was a bit of a chore since I have never attempted this before,but all is well in the end after a cold one...
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