HPMGuy/R-Dubb triple clamps Group buy - KTM forks on your Airhead! - Page 6

Airhead Wrangler · 07-12-2011, 07:38 AM

It's basically the same as the 50mm except they don't come with the spacer. You have to make one. Almost all of the KTM models use the 4860 forks with the same internals parts, just different valving and springs. The adventure 950/990 models have 3.5" less travel because of a 3.5 inch spacer fitted on the damper rod causing the fork to top out sooner than it otherwise would. The springs are also shorter by 3.5"

igormortis · 07-13-2011, 04:51 AM

OK, I’m looking for a helpful, scrupulous person, knowledgeable about these things, who can look at a link to some 4860s (I think), and give me advice on whether they’re likely to be a good candidate for this conversion. And then not buy the forks if they don’t already have their own.

Any takers?

Airhead Wrangler · 07-13-2011, 05:44 AM

Quote:

Originally Posted by igormortis

Any takers?

I'm no expert, but I'll give it a go.

Country Doc · 07-13-2011, 07:47 AM

That Rooney frame is intriguing...

hmm...

dc

igormortis · 07-13-2011, 03:17 PM

Quote:

Originally Posted by Airhead Wrangler

I'm no expert, but I'll give it a go.

Ah, dammit. Missed out! Thanks anyway AW.

HPMGuy · 07-15-2011, 08:51 AM

Quote:

Originally Posted by Airhead Wrangler

Any chance of doing the 4860s as well with our current numbers since the top clamp is basically the same, just 4mm wider holes? I don't see this being a terribly high demand part and I'm frankly shocked that we have as many takers as we do.

I am fine with this, and the numbers for the 4860 group, but it seemed that there was still some indicision with regards to material etc., wanted to get that resolved first, and didn't want to make the 50mm group (who seem really solid and ready to go) wait for that. As for the question of machining these out of 7075, it is definately possible...but is it necessary? R-Dubb designed these around using 6061, so I think the change to 7075 is not necessary and will add a LOT of expense to the project. So the 4860 group needs to come to agreement regarding material and then we can proceed.

Quote:

Re the machining of the stem offer do we have to supply the stem or will hpn guy supply

I would be happy to supply the stems for those that do not have them, that way we aren't supporting the shipping companies more than necessary sending these things all over the country. As soon as we get a number of those interested, I will post a quote including the stem with modification and pressing into the triple.

Airhead Wrangler · 07-15-2011, 09:28 AM

Quote:

Originally Posted by HPMGuy

I am fine with this, and the numbers for the 4860 group, but it seemed that there was still some indicision with regards to material etc., wanted to get that resolved first, and didn't want to make the 50mm group (who seem really solid and ready to go) wait for that. As for the question of machining these out of 7075, it is definately possible...but is it necessary? R-Dubb designed these around using 6061, so I think the change to 7075 is not necessary and will add a LOT of expense to the project. So the 4860 group needs to come to agreement regarding material and then we can proceed.

I'm OK with 6061. I was just presenting 7075 as a "why not?" kind of idea since it has much better mechanical properties with no real weight penalty, but if the price difference is huge, then I guess that's "why not."

HPMGuy · 07-15-2011, 11:39 AM

OK great, lets stick with the 6061.

The lower triple on the 4860 will not require an additional material charge (as I previously thought.), it just squeaked in the same size mat. for the other types...good news. So the pricing will be the same as the 50mm at $350/pair plus $18 anodizing. I will get the ball rolling on these as well.

igormortis · 07-15-2011, 06:01 PM

Excellent. Put me down for the stem also. Impressive service for you to source them yourself.

Country Doc · 07-16-2011, 05:47 AM

That's awesome Guy - thanks for your work on this!

Just to update my status, I'm in for a 4860 set WITH the stem ready and pressed in.

dc

gsjam · 07-16-2011, 06:51 PM

Big thanks Guy,To confirm put me down for the 50 and stem pressed in

ontic · 07-16-2011, 09:59 PM

I am not sure if I have missed it, but was there a price quoted or estimated for Guy to provide a stem and press it in?
Already having a stem here I need to do a little cost/benefit analysis or getting another one that is ready to go.

Cheers,

HPMGuy · 07-21-2011, 08:58 AM

Quote:

was there a price quoted or estimated for Guy to provide a stem and press it in?

I am waiting to see how many are interested, and then will provide pricing. Ordering multiple stems should get a quantity discount and machining them all at the same time will make it cheaper for all.

The material is in!

ontic · 07-21-2011, 09:14 AM

Quote:

Originally Posted by HPMGuy

The material is in!

Whoohooo!

Quote:

I am waiting to see how many are interested, and then will provide pricing. Ordering multiple stems should get a quantity discount and machining them all at the same time will make it cheaper for all.

Alright, sounds good.
I'll put myself down as officially interested.

Thanks,

gsjam · 07-22-2011, 03:11 AM

are we their yet

07-12-2011, 07:38 AM	#76
Airhead Wrangler More tacos than you Joined: Mar 2008 Location: Manzanillo MX, occasionally Seattle Oddometer: 5,090	It's basically the same as the 50mm except they don't come with the spacer. You have to make one. Almost all of the KTM models use the 4860 forks with the same internals parts, just different valving and springs. The adventure 950/990 models have 3.5" less travel because of a 3.5 inch spacer fitted on the damper rod causing the fork to top out sooner than it otherwise would. The springs are also shorter by 3.5" __________________ R80ST Gets The HPN Treatment Ducati Pantah 500SL Rebuild Seattle to TDF on an airhead WTB R100R Mystic sidestand and mount.

07-13-2011, 07:47 AM	#79
Country Doc Wanderer Joined: Dec 2006 Location: somwhere north of Kingston, Ontario Oddometer: 2,454	That Rooney frame is intriguing... hmm... dc __________________ Little Bikes, Big Desert II - Death Valley 2012 Little Bikes, Big Desert - Panamint/Mojave 2010 Little DR's, Big Mountains Desert's, Sunshine, and DR's

07-16-2011, 05:47 AM	#85
Country Doc Wanderer Joined: Dec 2006 Location: somwhere north of Kingston, Ontario Oddometer: 2,454	That's awesome Guy - thanks for your work on this! Just to update my status, I'm in for a 4860 set WITH the stem ready and pressed in. dc __________________ Little Bikes, Big Desert II - Death Valley 2012 Little Bikes, Big Desert - Panamint/Mojave 2010 Little DR's, Big Mountains Desert's, Sunshine, and DR's

07-16-2011, 06:51 PM	#86
gsjam Gnarly Adventurer Joined: Feb 2009 Location: Perth, Western Australia Oddometer: 142	Big thanks Guy,To confirm put me down for the 50 and stem pressed in __________________ Here for a good time....

07-16-2011, 09:59 PM	#87
ontic … Joined: Jul 2008 Location: Melbourne, Australia. Oddometer: 907	I am not sure if I have missed it, but was there a price quoted or estimated for Guy to provide a stem and press it in? Already having a stem here I need to do a little cost/benefit analysis or getting another one that is ready to go. Cheers, __________________ 1974 R90/6 1981 R80G/S 1994 XLR250R

07-13-2011, 04:51 AM	#77
igormortis Beastly Adventurer Joined: Dec 2006 Location: Wellington, New Zealand Oddometer: 1,082	OK, I’m looking for a helpful, scrupulous person, knowledgeable about these things, who can look at a link to some 4860s (I think), and give me advice on whether they’re likely to be a good candidate for this conversion. And then not buy the forks if they don’t already have their own. Any takers?

07-15-2011, 11:39 AM	#83
HPMGuy Gnarly Adventurer Joined: Mar 2006 Location: Mid-California Oddometer: 241	OK great, lets stick with the 6061. The lower triple on the 4860 will not require an additional material charge (as I previously thought.), it just squeaked in the same size mat. for the other types...good news. So the pricing will be the same as the 50mm at $350/pair plus $18 anodizing. I will get the ball rolling on these as well.

07-15-2011, 06:01 PM	#84
igormortis Beastly Adventurer Joined: Dec 2006 Location: Wellington, New Zealand Oddometer: 1,082	Excellent. Put me down for the stem also. Impressive service for you to source them yourself.

07-22-2011, 03:11 AM	#90
gsjam Gnarly Adventurer Joined: Feb 2009 Location: Perth, Western Australia Oddometer: 142	are we their yet __________________ Here for a good time....

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