I'm happy with my LB30s and 2.4 HR2s. I wouldn't want to go any wider on the rims which is the same thing I thought when I rode 729s.
What Tire Are People Running on 35-40mm Rims?
- Thread starter ianjenn
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Have you done back to back testing on the same bike with some 25mm rims?? I was in the same boat as you until I broke one and put the 25's back on..I had only ridden the wide rims on my new bike so I kinda didn't realize what I was missing....I did like the 2.4Hr2 but I dont like running a 2.4 in the rear..I feel like the narrower rims are so much more predictable when cornering hard..
I've ridden it back to back and with the same tires (2.4" HR2) on WTB i23 rims. I know those are too small. I decided a while ago that 25.5-29mm (based on the rims I'd ridden) was the sweet spot. I liked my 729s with big tires and I liked my Flow EX and Spank Subrosa with biggish tires. I ride really well on the LB30s so I wouldn't call them too wide but definitely the limit. If they offered an identical rim but 26-28mm wide I'd take it. I haven't ridden anything bigger but don't think (for my style) there'd be a benefit.
I've always liked big tires front and rear. Even the slight difference between my 2.4" & 2.35" HR2s seems to make a difference in how they handle rock impacts and loose conditions.
I've always liked big tires front and rear. Even the slight difference between my 2.4" & 2.35" HR2s seems to make a difference in how they handle rock impacts and loose conditions.
I suggested to light-bicycle they make a strong 27mm rim and explained some of the problems I felt there was with the 30's and most tires...they responded saying they talked to their "engineers" and they would let me know when they were going to be available..so hopefully they make them..I'd buy another set..
Good to know I am not the only crazy person riding a 2.2 rear tire and 2.4 front. I did have two punctures but I think running them tubeless this year will solve that. I think that will help me run a little lower pressure and get a little better traction uphill which is the only problem but running X-king they are just not super aggressive.
Are you running the LB (apparently now asia cycle express) i25 rims or alloys? I'm building a new trail (enduro) bike and want to try some affordable carbon rims. I was set on Derby's but I think they are too wide. I'm considering the ACE i25 or i30 rims. My last trail bike was rolling on 26" Easton Havens (i21). They did seem too narrow.
Back on aluminum rims..dont think the narrower LB would hold up for me...The i30's are also too wide IMO..
Pretty sure Nextie does i25's in the HD layup
Running a Ardent Race 2.2 on the front right now. Crazy fast compared to HRII it replaced. I'm riding hardpack and loose on hardpack mainly(summer here too). Great grip on the hard, not that grippy on the loose, but has a lot of feel. Not pushing that hard on it yet though and riding mainly burmed corners, so not the best gauge of how little grip it has yet. I think I'll try a Nobby Nic next cause I have one. Then I'll try a Ardent 2.35, should be better than the pretty thin 2.2 Ardent R. My goal is a rounder profile from smaller side knobs and more knobs for the hardpack. Nobby and normal(wider but)Ardent will hopefully be good when it gets moister here.
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So if you go with a not as wide rim, which one of these would you guys think is better?
http://www.nextie-bike.com/mtb/carbon-fiber-650b-wheels-clincher-hookless/carbon-fiber-27.5-inch-hookless-mtb-rim-30mm-width-clincher-tubeless-ready
http://www.light-bicycle.com/carbon-mountain-bike-650b-rim-mtb-27-5-rim.html###
http://www.nextie-bike.com/mtb/carbon-fiber-650b-wheels-clincher-hookless/carbon-fiber-27.5-inch-hookless-mtb-rim-30mm-width-clincher-tubeless-ready
http://www.light-bicycle.com/carbon-mountain-bike-650b-rim-mtb-27-5-rim.html###
That Nextie rim looks nice. I would say taller is better making for shorter spokes and it says two year warranty which is good too. However I know nothing about the quality never seen this name before?
Very tempting I think rims like that could save 100g per wheel for me vs my 1gen E13 Trs+ rims plus wider and better tubeless setup.
Very tempting I think rims like that could save 100g per wheel for me vs my 1gen E13 Trs+ rims plus wider and better tubeless setup.
I have the 30mm LBs linked above but I'd try the Nexties. 40g lighter and I like the shape better. It seems like a more efficient use of material.
I might be grabbing a set of 30mm rims from nextie. They don't charge paypal fees for their orders, otherwise most of their products appear to be identical to LB.
Fwiw my LBS here in CA is carrying Carbonal rims retail. http://www.carbonality.com/mx735-27-5-fr.html
I'm sure there are other US dealers like him. Says he gets them fast from US warehouse, and he will handle warranty issues.
I'm sure there are other US dealers like him. Says he gets them fast from US warehouse, and he will handle warranty issues.
See how the rim bed for the Nextie is flat, compared to concave for the LB?
Flat rim beds = hard to get tubeless to seat.
Concave rim bed (LB) = tubeless tires seat with a floor pump (at least mine did with both Specy and Schwalbe tires).
I have some 30 IW Light Bike rims in 650b and they are going strong and have taken a serious beating.
I like the wide, 25mm IW feels like an XC rim to me now.
to anyone using or recommending the light bicycle 30 mm external hookless rims (24 mm internal) -- when I contacted them recently LB really tried to steer me to the wider rim, since the 30 'is only for XC riding, not as strong as our AM or DH version of the 38 mm external rim'. however it looks like I've talked them into making a heavier version of the 30 EW mm rims.
seems that the 38 version has their newer profile with the internal bead lock channels, whereas the older 30 EW version does not.
seems that the 38 version has their newer profile with the internal bead lock channels, whereas the older 30 EW version does not.
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Hmm, it sounds like LB has changed that narrower rim. I've got 2 sets of the 23mm internal rim but they have bead hooks. One is the standard weight and is on my XC/trail bike, the other is a heavier build and was on my last enduro bike. They both have been fine. 1mm wider and no bead hooks sounds nice. I've got the 30mm internal on my current enduro bike and wouldn't want to go any wider.
Yep I have thousands of miles on the LB 23 IW rims I built up in 2013 for my Bronson. No issues, which is why I'm leaning toward LB again.
Do you notice improved braking but increased rolling resistance with the 30 IW rims? With typical tires that seems like an inherent trade off. It's Science!
Do you notice improved braking but increased rolling resistance with the 30 IW rims? With typical tires that seems like an inherent trade off. It's Science!
Braking traction is definitely better with the i30's...cornering not so much
rode i30 all last summer. really like them, but stuck the wheels from my hard tail (wtb kom i23) on my normal trail bike just for fun.
one thing wydopen has mentioned, which I really am picking up on is how much quicker the bike is to hit the side knobs with the narrower rim. i feel i can enter a turn higher, finish the corner quicker, and accelerate out much faster than with the wider rims (and correspondingly higher volume tires). First ride, had some serious brake skidding, but the last couple not so much as I got used to a slightly different feel from the lever to the tire, and that I could more confidently enter the turn with more speed.
I would still want i27-i30 for a DH bike, but on trail bikes, I23-25, and tires that measure an actual 2.25 wide and not giant balloons are ideal for this guy.
one thing wydopen has mentioned, which I really am picking up on is how much quicker the bike is to hit the side knobs with the narrower rim. i feel i can enter a turn higher, finish the corner quicker, and accelerate out much faster than with the wider rims (and correspondingly higher volume tires). First ride, had some serious brake skidding, but the last couple not so much as I got used to a slightly different feel from the lever to the tire, and that I could more confidently enter the turn with more speed.
I would still want i27-i30 for a DH bike, but on trail bikes, I23-25, and tires that measure an actual 2.25 wide and not giant balloons are ideal for this guy.
hey smarter guys than I, what do you think of this rim profile? it's from yoeleo, 30mm external.
Knowledge and good opinions aren't all to do with smartz.
hey smarter guys than I, what do you think of this rim profile? it's from yoeleo, 30mm external.
What size tyre do you want it for? For AM or DH riding?
For AM it's on the money for current tyres IMO. For DH I like my Zelvy 35mm with 2.5 Maxxis HR2, for AM with 2.3 HR2 I hate the 35mm.
23.5mm tall, is that shallow, that's my only thought and walls look thin. Just checked my Carbonal 29er, it's the same ERD(1mm different). Not sure why but with my 29er I like the 35mm wide rim with Racing Ralphs. It doesn't do any extreme work though. 30mm external is probably better.
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I am less concerned with width than with with construction (ie the rim walls), depth, and more importantly the concave center section that @wood booger was talking about. I don't know enough about tubeless to know which is best, but I'll be attempting tubeless with this wheelset, and I don't have a compressor.
FWIW, it'll be for 2.3ish tires, and XC/AM riding. I'll keep the factory wheelset for derping DH
FWIW, it'll be for 2.3ish tires, and XC/AM riding. I'll keep the factory wheelset for derping DH
BSD (bead seat diameter) and OD are in the ball park, BSD is maybe a touch small.
hey smarter guys than I, what do you think of this rim profile? it's from yoeleo, 30mm external.
It is missing the dimension of the concave section (rim bed diameter). I would look for RBD to be 616-618mm for easy inflation/install, shape looks ok.
If you are having trouble getting tire to seat & inflate, you can also add another layer of tape to increase the RBD slightly. I have been using duct tape lately, works awesome!
Angled sidewall section does look scary thin! Is it alloy or carbon?
Hmm.......2mm sidewalls.
Is that pretty standard? Plastic right?
Is that pretty standard? Plastic right?
It's the cross section for the yoeleo 29" 30mm w x23.5mm height carbon rims. It looks like the sidewalls are a touch smaller than competitors, which hover at like 2.5mm. I agree that the diagonal box section looks thin. He has another one that is 25mm deep, I'm inquiring about that one but these guys operate after I go to bed, so it's kind of painfully slow.
What's their reputation like? Why not just get Light Bike ones? Thin sidewalls will be easier to puncture as well as probably not as stiff.
You can inflate tubeless with a CO2 canister pretty easy. It apparently sets of the sealant though, so add sealant through the valve hole after. I've just done it with the sealant in there without issues(inflate with valve at top might be why)..
I like Gaffa Tape with the carbon rims, the glue it leaves behind I'm yet to have to deal with though. I've used duct tape fine with Ally rims, probably fine for carbonz too. Gaffa willl be thicker so possibly make tube instillation harder. I run the tape in a few MMs from side walls so the tyre sort of pops into it, in theory increasing the BSDs effectiveness.
You can inflate tubeless with a CO2 canister pretty easy. It apparently sets of the sealant though, so add sealant through the valve hole after. I've just done it with the sealant in there without issues(inflate with valve at top might be why)..
I like Gaffa Tape with the carbon rims, the glue it leaves behind I'm yet to have to deal with though. I've used duct tape fine with Ally rims, probably fine for carbonz too. Gaffa willl be thicker so possibly make tube instillation harder. I run the tape in a few MMs from side walls so the tyre sort of pops into it, in theory increasing the BSDs effectiveness.
You can get a portable air compressor for less than $100 that can easily seat tubeless tires. I recommend it.
http://m.sears.com/search=air compressor/PRICE_LOW_TO_HIGH/storeOrigin|Sears|Kmart^price|0$-150^storeOrigin|Sears|Kmart/search-grid-view?levels=Tools|Air Compressors & Air Tools|Air Compressors
http://m.sears.com/search=air compressor/PRICE_LOW_TO_HIGH/storeOrigin|Sears|Kmart^price|0$-150^storeOrigin|Sears|Kmart/search-grid-view?levels=Tools|Air Compressors & Air Tools|Air Compressors
this. After a couple of years futzing with a cheap pump trying to seat tubeless tires I started shopping for a fancy new pump that would seat tubeless tires. Then I realized a small portable compressor would be cheaper and work far better. The pressure gauge is also far more precise. I take it on road trips no problem (except when I have to fly), and it makes adjusting tire pressure on the car much easier and quicker too.
So the rear semi slick was getting a bit hairy on the dry trails around here. Not much traction wise until it was leaned over pretty far. So today I mounted up a Geax Goma TNT in 2.25 width. It works very well in our area. I will let you guys know what I find after some saddle time...
I know you had the question about the E29 and minions. Finally got a pic up. 2.5 on the rear is no problem, got about 1/3" on one side and at least 1/2 on the other (nature of the asym). Plenty of clearance. 30mm rim though, at least I think. Supposedly the stock rims are 30mm, but these are noticably wider by a few mm. Setting it up for some DH today.
After the Snowmass BME I was using the term "life changing" to describe the WTB Breakout 2.5s that I used. Tough casing at both ends, soft compound front, hard compound rear. On 30mm internal rims. I also got the Bontrager tubeless pump over the weekend and it worked great.
HR II 2.3 EXO on a Derby rim. I like, good grip and predictable in corners.
Geax Goma was a disaster.
Geax Goma was a disaster.