I've got a 2.4" Rubber Queen that I want to use as a sort of "semi-fat" front on my hardtail with a rigid fork, current front rim is only 26mm wide (externally) and I feel the RQ would float around a bit much on that due to its volume. I have a spare unused 32H disc hub sat around, and a load of common length spokes, so would only need a rim for a suitable front wheel.
So is it a case of going as wide as possible? Or is there an optimum width? I'm looking on the On One website right now, where they've got some Sun Ringle EQ29's and EQ31's going cheap, they don't look too heavy and they're reasonably wide, but are they wide enough would you say?
i've got one on a 719 & it's fine.
Worked well on a Flow rim for me
Does it not flat and squirm terribly on the 719?
A Flow would be good, but rather more than I want to pay... Looking at £20 tops for a rim here, so hence thinking would the cheap Sun Ringle's on On One be suitable, or would wider still be preferable?
I run a 2.3" vertical on a 721 and that fine. A 719 has a maximium tyre width of 2.3" so while a 2.4" may work I would go for a 521 rim if you were to stick to Mavic.
I would not run 2.3" on the 19 series rims they are too narrow imo.
I run a 2.3" vertical on a 721 and that fine. A 719 has a maximium tyre width of 2.3" so while a 2.4" may work I would go for a 521 rim if you were to stick to Mavic.
I would not run 2.3" on the 19 series rims they are too narrow imo.
Cheers, but largely irrelevant. 2.3" Vertical's are narrower than most other makes 2.2" tyres, whereas the 2.4" Rubber Queen is more like a 2.7" Maxxis in size.
Conti has very inconsistent sizing for some reason.
Oh, and I know I "can" technically run it on most MTB rims, just I want to know what the optimum is. Is it worth going over 30mm wide if possible, or does it not matter?
I don't think I've ever seen a 'what wheels for' thread on here where someone has settled on a tyre and is building the bike around it.
superstar dh rim, im really liking mine but then i never was a weenie. i can get some pics if you want to see how the RQ 2.4 comes up on it if you want.
the southern downhill team ran SS dh rims all last season and the chap i know hasnt needed to replace them (and he races in elite). he asked if he could use the am rim as it was a bit lighter but they told him that wasnt the image they were going for 😆
make of that what you will, but imho the superstar rims are top value for money.
I've run them tubeless on 355s no problems.
Is it worth going over 30mm wide if possible
Hell yeah (sorry my fave subject at the mo!) P35s on a rigid bike have been a revelation to me.
I'd ignore all that ERTRO -or whatever the acronym is- guideline stuff, it's ok for minimums but as a recommendation it's not great. For a tyre that big, go as wide as you can to hget teh best with a rigid fork. I had a 2.4 RQ on a 719 and it was ok at 35-40 PSI but that defeats the point of a big tyre. Too pingy really. Low PSI plus sideways stability is the aim and only a wide rim can do that.
28mm like a Flow as an absolute minimum, P35 much better, a Kris Holm wouldn't be overkill. Go down to 18-20psi and feel the float ) It'll cost more than £20 but it's money well spent, P35s are silly £ for what they are on paper, on the trail they are one of the best vfm upgrades imo.
P35s on my HT with 2.4RQ is great... as posted above go wide and drop the pressures.
Does it not flat and squirm terribly on the 719?
nope; had one pinch flat - hit a water bar in a berm at ~20km/h.
it's a thick heavy tyre so doesn't squirm even at 1.5 bar.
would definitely have a better shape on a wider rim - i just thought i'd mention that it's fine on a 719.
the 2.4 racing ralphs on my 29er are not so nice on a 719, they were great on a 24 mm internal rim (bontrager) but they don't have the carcass strength to support themselves properly.
I can get you a photo if your really interested (as sad as me)...
😀
I don't think I've ever seen a 'what wheels for' thread on here where someone has settled on a tyre and is building the bike around it.
Already got the bike (with 120mm reba's on at the mo), already got a 2.4" Rubber Queen, already got a rigid fork to go on it, already got a spare hub, already got some spare spokes... Don't have a suitable rim... Am I allowed to ask the question now I've justified myself?
jameso, appreciate what you're saying, I'm not spending 70 odd quid on a rim. No matter how good they are! I think at 31.5mm and still a sensible weight, one of those Sun Ringle EQ31's might make sense.
Or do you think despite the weight penalty, a Mavic 729 at 35mm wide but pretty hefty, might be worth a go given I've got access to one cheaply?
I agree, £70 for a P35 is daft, they're not a top quality rim, just wide and light-ish. I'm happy with them for performance to £ (paid RRP not trade too) but it's a stretch. 729 for a good price sounds like a winner, within reason I'd go for width and not worry about weight so much for that kind of front end.
The sun ringles will be fine, I have had a similar width tyre on an EQ27 and it was A-OK.
jameso, why do you reckon the weight isn't so important? I'm already a bit paranoid as a UST 2.4" Rubber Queen is 300g heavier than the tyre on there at the mo, a 729 will be about 300g heavier than the current rim, and though I'll be removing a set of 120mm bolt through Reba's and using the rigid forks instead (approx 600g lighter incidentally), all the weight will now be rotational which is going to hurt right? Or am I looking at this the wrong way?
Mboy, it's important, but so is low rolling resistance and shock absorbtion. More so I think. Just priorities really. I did use lighter spokes on my 135 hub / P35 combo as I didn't need any thicker (and that's another forum debate there) but overall the heavier end result is still better. I was a bit worried about the heavier rims until I rode them and the weight was more than offset by better control and low rolling resistance. tbh the last time i had tyres and wide rims (Kujos at 25psi on 521 and 729) like that was on a FR HT / 4x kind of build in the 90s, thinking back i used to ride that XC happily on a 1x9 and the wheels worked well.
I've found a wider rim + tyre at a much lower pressure performs better all round and the weight gain isn't really noticed since the benefits are more aparent. Yes it's a tad slower off the line but it rolls better, grips better, more control etc. I've not tried a fat-front yet but I'm interested to knwo where to draw the line on this one. This was all inspired by talking to Jeff Jones about a bike build, he rates wide rims over light rims, I tried them as I'm not a weight weenie - and like pretty much anything relating to rigid bikes that can handle hard riding, Jeff is right.
build up that wheel yet?
I'm after a similar set-up myself. . .
Perhaps a bit late (5 months too late...) but my preference would be the WTB Laser series rims, I had a set come OEM on a bike, they're wide, seem relatively light, eyeletted, and run a 'bead socket' design which holds the bead of the tyre in place, so they make excellent tubeless rims too.
I'm currently running 2.4" 'Trail Kings' (Rubber Queens for the homophobe US market...) on 17mm DT rims at 30 psi, no issues so far.
build up that wheel yet?
I'm after a similar set-up myself. . .
[img] 
[/img]
Rides quite well like that actually, can get away with only about 17-18psi in the tyre easily enough without risking dinging the rim. Grips like poo to a blanket too!
Currently slung my Reba's back on the bike with a normal wheel though for the moment, but will likely experiment again with the rigid and semi/semi-fat front again soon.
nice!
P35 user here, BTW 🙂