Need 100mm Silvio Chainstay Extension

[LarryOz]

I had the wonderful opportunity to drive to Lumberton, NC (only 4 hours away) to meet Jim and Maria Parker and to see and ride Maria's Vendetta. All I can say is WOW!
Makes my Silvio 2.0 seem slow now! And of course now I want one! (All I have to do now if figure out what to sell to raise the money. haha!

One suggestion that Maria had (for my Silvio) was to install a 100mm Chainstay Extension (which they are currently out of). This would have the effect of making my Silvio boom almost horizontal and will improve my aerodynamics significantly! I plan on participating in the Mid-Atlanitc 12/24 event on August 23 and would really like to get one and get it installed so I could acclimate to it in advance of the event.

Does anyone out there in Cruzbike-land happen to have one of these 100mm ?Silvio Chainstay Extensions they would be willing to part with?
If so, please give me a call or email.

Thanks in advance,
Larry Oslund
larryoslund@gmail.com
828-216-7860

 

[COBRA GT]

100mm Extension

Larry. I have the extension for sale. $75.00 shipped . Gary.

 

[Robert Holler]

Larry,
We now have the 100mm

Larry,

We now have the 100mm extensions back in stock, FYI.



Robert

 

[Rick Youngblood]

Hey Robert, how much is the

Hey Robert, how much is the 100mm extension, including shipping to 96003!

Thanks

 

[Robert Holler]

I should have said that

I should have said that Cruzbike has them.

Shipping for those is via USPS so pretty inexpensive to places within the US.

Robert

 

[Rick Youngblood]

Thanks Robert, I ran over and

Thanks Robert, I ran over and purchased one. Didn't know they were back in stock.

 

[LarryOz]

Thanks for the reply

I will have one to try now in a day or 2.
Thanks again Bob for the loaner via David.
If anyone else needs one, see Cobra Gt, or per Rose City's post above

 

[mzweili]

100mm chain stay extension

Larry and Rick,
I see that you where looking to migrate to a Vendetta.
But I hope you will modify your Silvio with the chain stay extension before.
I have an extension on hand, but are no sure if I want to install it right now.
I would really appreciate to get your impressions from this modification.
Waiting for your posts.
Thanks

 

[Rick Youngblood]

Marc, I will have mine

Marc, I will have mine installed next week and will post back.

I'm not sure how it will place back/hip to leg geometry. The Silvio and Vendetta seem to have the same back/hip to leg geometry between the two.

I believe Ivan uses the 100mm extension on his S2, but I have not read whether or not he has compared with and without.

 

[LarryOz]

Hoping to get mine installed this week

Will report back to the forum my impressions.

 

[LarryOz]

my impressions on the 100mm extension on my S2.0

I put it (the 100mm extension) on last Thursday (2014.07.31) and finally rode a long ride on Saturday: 150 miles with about 15,000 feet of climbing. I think my reach was over-extended and I developed debilitating cramps in both calves, plus my (slightly injured) left knee swelled up pretty significantly. It did not really seem like I could climb as well either, but with the cramps it is really hard to say.
I have stayed off the bike since then (5 whole days now - which is killing me!). I have also special ordered a set of 150mm cranks and with luck will install them tonight and test. I was hoping to ride an easy century this Saturday as my final long ride before the Mid-Atlantic 12/24 event on August 23rd, but have found that riding long rides after major changes does not work well! Imagine that! I just hope I can come up with a good solution before the event, or else I might just have to pass.

Other observations:
After mounting the extension, my boom and handlebars really lowered into my belly area. I am small and fairly thin, so that was not a problem, but I was amazed at how low it came. I could not even fit a water bottle under the boom now. So that was not too great! But I could mount and ride ok.
I may have moved my boom (BB) out too far in an attempted to lessen the bend angle in my knee (which was between 60-70 degrees), which was still way too sharp. Once I did that and really scooted forward on the seat, my knee angle was better, but my reach I think was way too much. It did not seem to affect me on my little 1 or 2 mile test ride, but it sure did when I went farther and exerted more.
I am really hoping that the switch to the 150mm cranks and maybe bringing the BB a little closer, this will correct the bad position. Gary (BentAero - who lives near me and is helping me), also thinks that I may need to drop down to a 50 or 60mm extension, thinking that the 100 is just too much. (Ratz, did you ever commission one of these? If so, how was it, etc?)
In the end, I am not really convinced that the extension really give a significant aero advantage. Sure the feet are higher up and the handlebars are lower, but your main torso is still in the same position. I will have to examine more before and after photos. I did not realized there was so much adjusting to do, but I think it is definitely necessary.
Thanks everyone!
Larry