Rigid fork advice
TheRevOlutionary
Posts: 1,176
Ok, so I'm now considering switching from my ageing Dart 2 front fork to a rigid, so I can save some weight and climb better. I keep the current fork in lock-out most of the time, so figured it might be worth it.
What are the main differences with the rigid forks, other than weight with the carbon/alloy options? I know I have a 1.1/8th steerer, but what's the difference with 42.5 or 44.5 length? 26 or 29 wheel? Is the offset critical? Anything else i need to consider?
Excuse the questions, just want to make sure I get the right one!
What are the main differences with the rigid forks, other than weight with the carbon/alloy options? I know I have a 1.1/8th steerer, but what's the difference with 42.5 or 44.5 length? 26 or 29 wheel? Is the offset critical? Anything else i need to consider?
Excuse the questions, just want to make sure I get the right one!
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the length depends on your frame designe and what length sus fork it was designed for.
so measure/look up your AC length and select a Carbon fork AC that is about 20% less than your fork AC length.
20% is a very very rough estimate 1" is also fine."Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
Parktools :?:SheldonBrown0 -
That would mean that you have a 5" A2C. I'd go with just an inch less.0
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Chunkers1980 wrote:That would mean that you have a 5" A2C. I'd go with just an inch less.
wtf? short arse or what."Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
Parktools :?:SheldonBrown0 -
Thanks guys. (AC = Axle to crown length, yes?!?)
You've mentioned carbon, is that 'recommended'? Are they more forgiving with the bumps you may see, or is it a purely weight based example?0 -
Ok, so it looks like I have an approx 453mm AC length and 39mm offset.
Is it best to just do a like-for-like swap, allowing for the 20%?0 -
Yes that's a2c. Measure your sus fork length and take off about an inch to account for the sag you will no longer have.0
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AC yes Axel to Crown
I would not look at any ridgid fork that was not carbon.
Dart 80: 454mm
Dart 100: 471mm
Dart 120: 501mm"Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
Parktools :?:SheldonBrown0 -
May I ask why though? I had kind of assumed to be getting a carbon one anyway, but always good to get a bit of knowledge along the way! So based on this info, I need the 42.5cm AC.nicklouse wrote:AC yes Axel to Crown
I would not look at any ridgid fork that was not carbon.
Dart 80: 454mm
How critical is the offset? I like these, but it makes no mention of any option on the AC, and has a 9mm dropout?0 -
9mm is standard front drop out.
carbon takes (or can take) some of the buzz out.
they give the AC 470mm so suitable for a 120mm sus fork replacement but could be used on a 100mm designed frame.
I would not put them on a frame for 80mm.
look at some other fork."Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
Parktools :?:SheldonBrown0 -
Those on ones are also tapered. You will not have a tapered headset if using such a basic fork i am guessing?
these will be perfect
http://www.carboncycles.cc/?s=0&t=2&c=43&p=196&0 -
+170\'sPenguin wrote:Those on ones are also tapered. You will not have a tapered headset if using such a basic fork i am guessing?
these will be perfect
http://www.carboncycles.cc/?s=0&t=2&c=43&p=196&"Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
Parktools :?:SheldonBrown0 -
Fair enough, thanks Nick.nicklouse wrote:9mm is standard front drop out.
carbon takes (or can take) some of the buzz out.
they give the AC 470mm so suitable for a 120mm sus fork replacement but could be used on a 100mm designed frame.
I would not put them on a frame for 80mm.
look at some other fork.
Am intrigued that BikeFridge can offer the eXotic forks cheaper than CarbonCC?0 -
They are the same people.0
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...that'd be why then!supersonic wrote:They are the same people.0 -
44.5 as opposed to 42.5? Make any real odds?70\'sPenguin wrote:Those on ones are also tapered. You will not have a tapered headset if using such a basic fork i am guessing?
these will be perfect
http://www.carboncycles.cc/?s=0&t=2&c=43&p=196&0 -
Anyone used these guys on eBay? They look fine, and are only just over 500g! They also do a bar and stem combo which looks awesome!0
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a bit tall and NO way."Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
Parktools :?:SheldonBrown0 -
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Tall as in a2c - those have 45cm, but yes you really have to cut the steerer.
No way probably mean that stem bar combo - not really for mountain bikes - best you can change individual bits.0 -
TheRevOlutionary wrote:
like i saide the AC is wrong.
a head tube is part of your frame.
and the stem bar combo. just NO unless you have a penchant for Lycra."Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
Parktools :?:SheldonBrown0 -
Just spotted the AC length, not ideal, but makes it useful for 26 or 29 I guess. Amazing that they can be longer, but almost half the weight of the eXotic ones though?!Chunkers1980 wrote:Tall as in a2c - those have 45cm, but yes you really have to cut the steerer.
No way probably mean that stem bar combo - not really for mountain bikes - best you can change individual bits.
So it's a stereotypical thing, rather than 'won't fit' thing?! Lol
but just for the record, I don't enjoy lycra, or stay in the company of anyone that does!! 0 -
TheRevOlutionary wrote:Anyone used these guys on eBay? They look fine, and are only just over 500g! They also do a bar and stem combo which looks awesome!
There is a thread on mtbr about these forks and some rather nasty pictures of them snapped in two. Some of the weenies seem to use them, but if going for all carbon I would pay extra and save my face.0 -
Thanks. I am not too fussed to go all carbon, but if you can get one for the same price and it lasts then why not?! I'll go-ogle some reviews and see what I can up turn.70\'sPenguin wrote:TheRevOlutionary wrote:Anyone used these guys on eBay? They look fine, and are only just over 500g! They also do a bar and stem combo which looks awesome!
There is a thread on mtbr about these forks and some rather nasty pictures of them snapped in two. Some of the weenies seem to use them, but if going for all carbon I would pay extra and save my face.0 -
what's wrong withthe eXotic or carbon cc ones?
Carbon is a definate benefit in this case.0 -
Nothing, but there are auction versions of the Hylix ones on eBay for much less, so wanted to ask the question. Having checked now though, I'd not risk the cheap ones, as I've seen some pictures that have scared me a little!!Chunkers1980 wrote:what's wrong withthe eXotic or carbon cc ones?
Carbon is a definate benefit in this case.0 -
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From the UK? If not add in import tax and VAT, and little warranty.0
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Taiwan! Allow 2-3weeks for delivery (plus import taxes if required), but has a 2 year 'warranty' apparently. Won't be risking it though...supersonic wrote:From the UK? If not add in import tax and VAT, and little warranty.0 -
Make a cheaper suggestion if you like...!YeehaaMcgee wrote:Man alive, over £100 is insane for a rigid fork.0 -
Kona P2. Or £110 suspension fork.0
