Tires

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echuckj5
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Tires

Well,

Looks like MB-AIR lost a tire, I know I told him jumping things would lead to this.

A couple of facts on the Hookworms, outside diameter is, at 30 psi, 27 1/4". Width is 2 1/2". I had to bend the kickstand tube, just behind the bottom bracket on my Raleigh to get the tire to fit. In the same area, I had just about an 1/8 of an inch clearance from the sidewalls to the frame.

100_0260.jpg

100_0262.jpg

The wheels have to be trued perfectly and often or the tires rubbed. They have very thick beads, you have to use wider rims, 1.3 inches minimum outside measurement on the rims, or the valve stem won't fit between the beads when installed. These tires should only be used with the maxxis 2.5 tube, also, smaller tubes deform and the tire has hard and soft spots. Unfortunately, I don't rate these an A, maybe a C+. No Kevlar lining and they are not "round"

http://www.maxxis.com/products/bicycle/overview.asp

The schwalbe big apple has had some very good reviews and has a kevlar belt and has more than one size.

http://schwalbetires.com/node/61/ok

I read these hum while your riding, Their website is down temporarily, lost the link anyway, but good reviews on mtb reviews. Specialized hemisphere armadillo tires

http://www.mtbr.com/reviews/Tire/product_72381.shtml

Maybe if you justed stopped jumping things!!!!!!

chuckles

MB-1-E
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Re: Tires

Thanx for the linx!

... hey, I've never jumped over more than two busses ... what's the big deal ... sheesh!

_____| |_| |____\_____<-------------- Flat Tire

re: tires ... well, I was lookin' for some fat tires that would match my fat arse ...
... guess my rims probably won't work with 'em though.
The measurements really help though, muchos gracias senior Chuck.
I'll check out the other linx and see what they've got.

EDIT: Hey, the Schwalbe looks like it might be just the ticket - 26 x 2.35 KevlarGuard 20-55 lbs. 150 kg $37.85

Thanx,

Dave

MB-1-E
Electric - Bridgestone MB-1 Mountain Bike

Dave B

MB-1-E
<a href="http://visforvoltage.org/book-page/996-mountain-bike-conversion-24v-3-4h... - Bridgestone MB-1 Mountain Bike</a>

MB-1-E
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Re: Tires

I just went to the Schwalbe site again.
I like the way that they explain how the tires are made, what to look for under different types of use conditons and how they are listed under catagories.
All in all it makes finding the right tire pretty straight forward.
After I went through the selection process I ended up (not surprisingly) at the Big Apple.
It seems to have just the characteristics that I'm looking for and at a reasonable price.

Thanks for the tip on these Chuck, think I'll be getting one of these w/tube.
I need to take some final measurements on the bike to be sure, but I think the 2.35 will work nicely.
I want the width for a bit more cussion ... and besides, it looks cool. 8)

Dave

MB-1-E
Electric - Bridgestone MB-1 Mountain Bike

Dave B

MB-1-E
<a href="http://visforvoltage.org/book-page/996-mountain-bike-conversion-24v-3-4h... - Bridgestone MB-1 Mountain Bike</a>

echuckj5
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Re: Tires

All Right

MB-AIRBORNE, on the road again....

I guess I was a little hard on the Maxxis Hookworm's. For older conventional mountain bikes like AirBornes' and mine, they are a really tight fit. I never bought tubes big enough for mine, or for that matter, rims that were wide enough. If I had the proper rims and tubes, the tires may have been more round. These large tires are made for modern mountain bikes.

My rear single wall aluminum rim measures 33mm or about 1 5/16, the tube is a standard tube I think rated about 1.75 to 2.00, same tube on the front. Tube fits correctly on the rear no soft spots, tire is not round visually, not noticable driving, no vibration or anything.

Front rim is a 30mm, or about 1 3/16 inch double wall rim, tire just barely fits this rim, the valve stem just barely protrudes because the beads of the tire are so thick that the tube cannot stretch enough to push the stem all the way through. The tire has a large soft spot about 4 inches long right at the stem area, tire is hard all the way around the rim except right near the valve stem area.

If I had 35 mm rims and the proper tubes, I am sure the tires would round out better, I am not positive on this, just that Maxxis makes great tires overall.

Now, using larger diameter tires. I speak from experience. I filled my Maxxis tires to 50 psi, Ka Bamm!!! Double wall 1 1/8" aluminum Raliegh rim blew out. This was a nice rim. The tire was fine, the rim was very bent. Remember, Force = Pressure X Area. There is a lot more area, probably double, I'm not doing the math, thats your job, on these big tires. I'm running up to 45 on my front Sun Single track 6061 double wall, what they call a 31mm rim and on the single wall rear rim I won't go above 40 psi, learned my lesson. Besides, I fill up the tires when they are about 25 psi, still have good rolling, just worry about pinch flats if they get any lower than that.

I'm Happy with the Hookworms, fantastic mileage, my records say 2929 miles. Front tire does not show any wear on the Cheetah. Part of this is because until recently I never had suspension forks tough enough, I put all the weight towards the rear, even modified my seat position, dropped the handlebars rearward, even the footpegs, backk bacck back trying not to tear up the front end. Now the rear tire, she's not to the thread yet, but she don't have 500 miles left on her.

I'll wait on AirBornes' report on his tires, if they hold up jumping buses, they may just work on the "Cheetah"

Thats alll folks

Big Chuck from the Big "D"

[b]AGM BATTERIES[/b]

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