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steep fast and loose :)
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Discussion Starter · #1 ·
thinking about a Helius AC, but reckon my AM could convert quite easily, utilising the 140mm travel position and a pair of 32 TALAS 140 [or 150]mm's up front.
Thoughts ?
 

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Certainly save a few pennies for the pimp lightweight kit that could go on it and if using 57mm stroke shock will have a nice low ratio.
 

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Garry AM said:
Certainly save a few pennies for the pimp lightweight kit that could go on it and if using 57mm stroke shock will have a nice low ratio.
yes but it will be a good bit more than 140mm using a 57mm stroke and simons obsessed with travel:rolleyes: too much being the root of all evil etc. also not sure how the AM would fair with 32's but it would be worth trying
 

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I have a customer that tried that with am he didn't like it. That why he is selling it and has a ac on order.
 

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steep fast and loose :)
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Discussion Starter · #7 ·
ncig : what were the issues ?
i'm going to amend mine this weekend to run 140mm FLOATS on a 51mm Monarch just to see what happens.
 

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from 0 - sideways 3.2 sec
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Whats wrong with the AM as is? You always moan about pedal strike and lower forks will make it even worse? Just a thought; not an invitation to a battle! :D
 

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The_Lecht_Rocks said:
ncig : what were the issues ?
i'm going to amend mine this weekend to run 140mm FLOATS on a 51mm Monarch just to see what happens.
He was looking for something a little lighter and he didn't like how high he sat up in the bike at 140 he loved more in the 150 to 160 he felt he was raked out more. He has a FR and felt they where to close to each other too. He know thinking of getting a AFR but concerned about weight.
 

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steep fast and loose :)
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Discussion Starter · #10 ·
with a 51mm stroke shock, i'm wondering if the mid stroke will be beter controlled on a lesser travel setting ?
 

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derekr said:
Whats wrong with the AM as is? You always moan about pedal strike and lower forks will make it even worse? Just a thought; not an invitation to a battle! :D
Though running the AM with less travel makes a greater difference. 180 mm vs <150mm travel makes alot when sagged.
 

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steep fast and loose :)
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Discussion Starter · #13 ·
yeah - mik your right - 140mm of controlled travel may well assist the pedal strike.
will be building it up in the morning and will measure BB height once complete as well as offering comparisons on HA , SA, and weight.
i reckon this may be as good as the AC as it'll steepen the HA a wee bit and hopefully hardly affect BB height.....and provide less mushy travel / controllability.....
 

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Other than dropping c. 2lbs in weight by replacing a Fox 36 for a Fox 32, what are you trying to achieve? I can see the big benefit by the weight reduction; not sure about reducing the travel from 150/160 to 140mm.
 

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Discussion Starter · #15 ·
geetee - i'm aiming to equip myself with a tightly controlled, bombproof 140mm trail thrasher @ around 27/28lbs....
 

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OK so how about looking at it like this - run a 150mm Fox 32 Float in your existing AM and run the AM in 150mm mode; the travel is then balanced front to rear and the most you've changed the geometry by is 1 degree steeper on the HA and you've dropped the BB by a tiny amount. OK so it's not 140mm (I think the AM at 140mm is not optimal either), but seriously, what's the difference between 140mm and 150mm when the AC actually tops out at 146mm anyway?

You're running either a CCDB or a monarch right? How about getting a sorted RP23 with lots of low speed compression damping so you've got something to push against (I am guessing you want less travel in order to be able to pump the bike more on the trail)

OK so now he AC will save you at most 500g/1.1lbs if you swap size for size, but bear in mind that like for like sizes of the AM and AC are not the same; most likely if you ride a medium AM, you'll want a large AC for the bike to feel the same size in terms of length, in which case the weight difference may not be this much. So we're looking for a 500g saving other than through the fork, which is the only other significant piece of kit that would change between the two bikes.

How about a set of Specialized Roval Traverse SLs or Crossmaxx SXs? They come in under 1600g for the weheels and saving you around 400g over your existing 819/5.1d combo, plus its rotating weight. or how about a full set of Formula R1 brakes; that could save you in the region of 500g as well.

This just makes more sense to me than junking a frame that you once described as being "a briliant adaptable bike" that "kicks serious ass".

Of course, if money isn't an object then knock yourself out. While you're at it, you can make me an offer for me Ion.
 

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Have you thought about one of the Helius CCs that we have on offer (currently £1250 without shock)? Dropping 20mm travel from the front of your AM (160-140mm) should lower the BB by about 10mm which is only going to make your issues with pedal strike worse.
The CC -
- with 140mm fork has the same HA as the AC
- has 129mm travel at 50.9 stroke shock. We used to fit 57mm coil shocks to them so you could try your 57mm shock to give 144mm travel . Either would gie you a lower leverage ratio which is something else that seems to concern you
- has higher bottom bracket than either the AC or AM which might suit your riding style/trails better with regard to the pedal strike issues that seem to bother you so much
 

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steep fast and loose :)
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Discussion Starter · #19 ·
@ nic uk : interesting opportunity, but it's an AC or an AM for me at the moment, although your proposition is very hard to argue with and worth considering. what colours are available ?
geetee - i like your reasoning with the 150mm 32 and i could use a headtube spacer maintaining the head angle.........if necessary........
i'm loathe to swap wheels however as they run on my venerable chris king hubs which are old and reliable and so easy to maintain......
 
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