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Iron Horse 6 point setup tips, anyone?

4130biker

PM me about Tantrum Cycles!
May 24, 2007
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Yep, the shock on the 6point is 8.75x2.5 and the 7point is 8.75x2.75. I rode a 6point8 loaner for a while back in the day and it was a fun bike. I don't recall it being all that heavy though - air front and rear, light-ish wheels and components.
Just for clarity here- I have a 9 x 2.75 shock off of a 7point, but maybe an early model? When did it switch to the more traditional 8.75 x 2.75?
 

BmxConvert

Monkey
Aug 6, 2007
715
0
Longview, Washington
csermonet you asked about what I used to bore the seat tube.

I ordered up this guy right here

Go slow, use lots of cutting oil, and then finish it off with a cylinder hone to ensure there are no additional burs inside.
 
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csermonet

Monkey
Mar 5, 2010
942
127
Just for clarity here- I have a 9 x 2.75 shock off of a 7point, but maybe an early model? When did it switch to the more traditional 8.75 x 2.75?
IIRC, the first generation 7 points used 8.75 2.75 shocks, but some were supplied with 9 2.75 because of some sort of supply issue. Not sure if that's true or not. I do know that the 05 uses different upper links than the 06.
 
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csermonet

Monkey
Mar 5, 2010
942
127
What are you running for brakes, seatpost, cassette, shifter/derailleur, chainrings, chain, pedals, bars, stem, rear shock...
Running an air rear shock and light wheels helps but if you've got a porky cassette/drivetrain or weighty cockpit and such it's easily offset. Just because it's a high-end component doesn't mean that it's the best value for weight and durability.

Once I get my garage painted and the cabinets installed I'll have space to start tearing down and building up my 7point which I'm shooting for as 34lbs.
Very true, which I may be being a bit ambitious for 32lbs with my planned build. I'd post build plans but everything is subject to change at the moment.
 

csermonet

Monkey
Mar 5, 2010
942
127
So I measured the e2e on the shock to double check, and it was indeed 8.75. I went ahead and filed the weld bead down and it seems to have solved the issue. You can see in the picture it has a bit of daylight between the link and weld bead now, and when the suspension rebounds it no longer has the slight knock at the end of extension. Barely any material needed to be removed, so there is only material taken away from the bead and not the tabs or BB shell.



 

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4130biker

PM me about Tantrum Cycles!
May 24, 2007
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It still suprises me how timeless looking those DW IH bikes are.
 

csermonet

Monkey
Mar 5, 2010
942
127
It still suprises me how timeless looking those DW IH bikes are.
Agree'd. It's a shame they were run into the ground by a shady CEO. Ever since I got rid of my Sunday, I have been jonesing for a DW Iron Horse that I can get some proper use out of. Can't wait to get it done.
 

Muddy

ancient crusty bog dude
Jul 7, 2013
2,032
908
Free Soda Refills at Fuddruckers
92SER - That makes me feel a little better, thanks for sharing.

Skullcrack - Looks great! Was considering rawing mine and polishing it to match my DW DHR but the paint was in such good condition I left it the way it was. But this makes me think otherwise haha

Muddy - None taken. I hope you can reciprocate and not take offense when I say you're an idiot and a doosh bag. You should go to mtbr, you'll fit right in.
So this is the official CserMonet Build Thread then? I must be mistaken by having found this within the DH forum for a non-DH bike, when the DW*Link thread was then merely a few links to the top of Downhill Forum. That very Thread, it exists w/ a mil + views for a reason, so I apologize not being constructive with the need for attention on things already there as reference. As for the 105 page claim - I read them. And after I asked the one question not posed, and it was for the 6Point.

**** - the last pages were my attempts with the same flim-flam thing about a 2.75 VivdAir you dink!! And, you actually were expecting RockShox to have mis-built your Vivid as opposed to doing anything else with this information resource offered here.

And to think I was all excited about posting bike specs but got so nervous I posted up entirely the wrong parts.
 

csermonet

Monkey
Mar 5, 2010
942
127
So this is the official CserMonet Build Thread then? I must be mistaken by having found this within the DH forum for a non-DH bike, when the DW*Link thread was then merely a few links to the top of Downhill Forum. That very Thread, it exists w/ a mil + views for a reason, so I apologize not being constructive with the need for attention on things already there as reference. As for the 105 page claim - I read them. And after I asked the one question not posed, and it was for the 6Point.

**** - the last pages were my attempts with the same flim-flam thing about a 2.75 VivdAir you dink!! And, you actually were expecting RockShox to have mis-built your Vivid as opposed to doing anything else with this information resource offered here.

And to think I was all excited about posting bike specs but got so nervous I posted up entirely the wrong parts.
You don't have to come to my official build thread, you illitterate twat
 
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Muddy

ancient crusty bog dude
Jul 7, 2013
2,032
908
Free Soda Refills at Fuddruckers
You don't have to come to my official build thread, you illitterate twat
I see there was fun had there - understand first that no one here is trying to prevent you from doing anything with your bike or with your time here, got it? If you expect ''anyone's" input you're going to have to realize no one is a paid contributor, any input on (any) forum responses can detract from other long standing info, so what I'll do is boil an Egg on all what's this heat you're throwing and peel it for you when I'm done.

Read the full specs for the bike here - this is the T6 Aluminum 6Point8 Frame'd bike.



There are two mis-prints as far as specs for this bike go and went. I'll avoid drawing you into any drama from past associations IHBC, bottom line if the bike was just a altered-tubeset 7Point, then any 8.75 x 2.75" shock would be a slip-fit, no?? That was the shock for that bike and that bike only. It will and does fit because the back-half is a strict carryover.
The bikes all had 8.5 x 2.5" shocks, anyone telling you otherwise is misinformed or doing their best to maintain potential, maintain performance, and maintain the integrity of some still-passionate cycling. I've removed three shocks from these frames over the years - each of them and all of them were 8.5" x 2.5". This was the first I'd gone and done the "6Point7" thingie, and the first I'd tune'd on my own c/o RockShox Authorized Service Center local.

Now, referring to your recommendations upon Mtbr.com - there's the exact same thread as this... started up the same day, and it's inside the DH forum there... now going further into that's ability to perform as a resource:

There stand a near infinite amount member input regarding which compression tune setup is best, which shock will do what for the bike, and the exacts this bikes inception-crowd recommends -- specifically Dave Weagle. You can find on there his statement to the effect of the 8.75 x 2.75" shock can and does make a positive carry over. That's that. Done and done.

You, and every other 6Point betterment had to rid a bit of ISCG Tab weld in order for the lower, slower rotating link to allow full range.
...whether is gets admitted to or not is up to whomever, but do refer back to the mis-specs on the bike, specially the 1.5" headtube. That is only truth worthy if external bearing retainers are placed into the bike's front stack. ...creating a Tower of Babel which has the bike begging for the cure.

Endgame of this is maybe you're a bit ambitions. I can see that. But remember this is an Eight (8) Year old frame and and an 8 Year old bike and it's all been done. MTBR.com has a 32.74lb bike which is unverified; at best any build of this bike will be at or near 33lbs, nothing touching 32lbs or less.

Oh - I just could not help but read some things stated by the Mtbr.com Thread Starter whose contribution matches this to a 'T', and Darren Barrecloth is not the 'first successful BMX convert' to Mountain Bike.

There's IHBC Toby Henderson/Dave Cullinan to start. IBIS DW*Link rider Brian Lopes. Brian's rival Eric Carter @ Hyper Bikes. Yeti's Richie Houseman & his brother Ronnie. Mike King, another BMX Great. Cherri Elliot - Jill Kintner - Todd Wells, need I say moar? Oh, Steve Peat - he shy's away from BMX but he was very quick - he and I rode for a couple days BITD.

So - take away from this what you may, you have a really fun bike to play with if you know how to start.
 

92SE-R

piston slapper
Feb 5, 2004
272
13
San Diego, CA
Umm no. They all came with 8.75" x2.5" dhx airs, the only shock with that eye to eye and stroke. The 6point was never 8.5". Mine came new from randall scott with a 8.75 verified by my calipers. All my buddies also had 8.75 shocks on their 6points. Running a 8.5" shock drastically changes the geometry from what it originally came with. This is also verified from dave weagle in the huge mtbr 6point thread where he mentions short shocking the bike. Also, the bike climbs a lot more poorly with the 8.5 shock because it is no longer in the anti-squat area of the curve.
 

Muddy

ancient crusty bog dude
Jul 7, 2013
2,032
908
Free Soda Refills at Fuddruckers
Umm no. They all came with 8.75" x2.5" dhx airs, the only shock with that eye to eye and stroke. The 6point was never 8.5". Mine came new from randall scott with a 8.75 verified by my calipers. All my buddies also had 8.75 shocks on their 6points. Running a 8.5" shock drastically changes the geometry from what it originally came with. This is also verified from dave weagle in the huge mtbr 6point thread where he mentions short shocking the bike. Also, the bike climbs a lot more poorly with the 8.5 shock because it is no longer in the anti-squat area of the curve.
Can't do nuthin' for ya man -- each shock - DHXAir3, DHXAir4 - both OE and 8- x 2.5; a RocoAir'd frame had to be cleaned up from not doing the pre-empt like what has to be in respect to what works. It is what it is.
 

BmxConvert

Monkey
Aug 6, 2007
715
0
Longview, Washington
Umm no. They all came with 8.75" x2.5" dhx airs, the only shock with that eye to eye and stroke. The 6point was never 8.5". Mine came new from randall scott with a 8.75 verified by my calipers. All my buddies also had 8.75 shocks on their 6points. Running a 8.5" shock drastically changes the geometry from what it originally came with. This is also verified from dave weagle in the huge mtbr 6point thread where he mentions short shocking the bike. Also, the bike climbs a lot more poorly with the 8.5 shock because it is no longer in the anti-squat area of the curve.
This is correct. They were all 8.75x2.5 although if I recall correctly the MTBR threads were showing that DW said that on the 6point the pedaling characteristics were nearly unchanged by short shocking it.
I do think that when I short-shocked mine the geometry was spot on and it was because of that that I enjoyed the bike more(and maybe didn't take note of a loss of efficiency).

Either way, I'm excited by this thread to get my 7point done but a blown out back prevents me from lifting it into the bike stand.

Csermonet- I still have my RP23 BoostValve Adaptive Logic 8.5x2.5 with air volume reduction off my 6point if you would like it?
 

6pointkid

Chimp
Nov 26, 2015
3
1
I just completed a sweet 08 6.6 build weighing in at 31lbs with air front and back and I threw some 2015 demo 8 wheels on it I'll be uploading pics soon