Trying to deal with Recumbutt on Silvio 1.5

[ratz]

trplay, I really haven't looked closely at any other Silvios and these spacers were in the used kit I purchased so I used them. I guess I figured that I should use them so I don't know. I have a 42-43 Xseam 6ft tall but long waisted, 32 inch inseam and figured I am in the middle sizes for this bike. Super Slim could be on to something with the extension, how do you figure the 55mm change in BB height? Anyway, I think you do have to use a cutter on the fork tube to drop spacers from viewing Ratz Vendetta build, he mentions it. Anyone else care to comment on the spacers or extension? (my ears are open)

Given that photo and a long torso with an x-seam in the 42-43 an extension of 65-100mm would be a logical thing to try. 100mm were a stock part any thing below that is a custom part that would have to be scrounged up and made. I like the 65mm extension on our Silvio; I'm shorter but also long torso with a 40ish x-seam (I need to write that down I always forget what mine really is...).

But Use of the bike is also important; that's an excellent ft height for a commuter. Cutting the fork is daunting but you can reverse it with a stem risers. SuperSlim would be the one to comment on whether the spacer can be moved above the clamp He's go the experience with that frameset to known about the clearances.

That all said; if that much padding fixed the problem; then I think Hardy is correct that cutting the fork would like allow that padding to be removed.

A photo of rider on bike from the side would also help us better understand..

 

[1happyreader]

Another point is there is nothing wrong with cutting the fork stem if it actually improves the fit.

Can you do that with the OLDer suspension fork ??

 

[ratz]

Can you do that with the OLDer suspension fork ??

If the end is hollow and open most can but I've not personally seen that fork. Is there something you have seen with it that gives you pause? Perhaps we'll have to hear from Robert on that one.

 

[1happyreader]

If the end is hollow and open most can but I've not personally seen that fork. Is there something you have seen with it that gives you pause? Perhaps we'll have to hear from Robert on that one.

nahhh just fishing for info and education.

 

[bubbabent]

Good information trplay, never thought of just relocating the spacers, must interfere with my sense of order. Maybe a 100mm extension could be in the works for me. I was riding my Corsa today at ~17 degrees of seat angle (euromesh with ventisit= comfort) I thought about the differences in seat angle and why the Corsa never caused this and it is all about the angle of the hips. The extra padding on the Silvio postpones recumbutt for awhile, but is no cure. I may play with the spacers first and then look at extension. Thanks for the input Ratz! I guess if you get a 100mm extension you would need a new front D cable and 5 or 6 links of chain, anything else?

 

[ratz]

I guess if you get a 100mm extension you would need a new front D cable and 5 or 6 links of chain, anything else?

Derilleur stalk is on the bb section; so just more Chain; the derailleur cable should still work even on a 1.x. Someone with a 1.x confirm for me please.

 

[bubbabent]

Okay, I have the 10 and 20 mm spacers that are listed on the Silvio assembly guide in the proper position. Seems like moving spacers on top could mess with all 4 cables being routed through the pivot clamp bottom a little? Maybe the extension would be better to lift the bb and get hip angle up some. I will have to ponder and see if others chime in.

 

[ratz]

For the purpose of testing just route the cables outside the bracket. If it works you'll be cutting the fork and then the cable can go back inside the bracket.

 

[telephd]

When I added the 100mm extension to my original S1.0 I added 200mm of chain and did not have to change the FD cable.

From what I can see from your pics bubbabent I think you may benefit from cutting the steertube to get your hands down and also from installing a 100mm extension. As I mentioned earlier it made all of the difference in the world for me and aleviated recumbutt completely. I was suffering pretty badly after about 15-20 miles before the extension.

I agree with the others that your stacked padding isnt really a solution in the right direction.

My experience with spacers above the bracket is no bueno. I couldnt even get a 10mm to work without horribly compressing the cables. In fact I made it fit and ended up recabling.....

 

[super slim]

I am 6'1", with a 46.3" x seam, and that was the BB height increase for me!
The 100 mm extension made the ride a LOT more comfortable!

 

[super slim]

Can you do that with the OLDer suspension fork ??

Yes it can be cut!

 

[bubbabent]

Thanks for the comments super slim, and telephd. looks like I may end up doing both. I went out in the garage tonight and tried to put the 20mm spacer above the pivot clamp, but the stem butted into the slider bar so switched to the 10mm spacer above the clamp and that worked with a noticeable drop in the handlebars. Not sure , but thinking I should take 20mm off and leave the 10mm spacer and order the 100mm extension. two questions come up, do i try to push the star nut down further in the stem before cutting or by a new one? and with extension do you get a new chain or add a length and have two of those missing links? thanks in advance. pictures are showing 10mm spacer on stem.

 

[super slim]

Replace the star washer with a expanding serated nut designed for a carbon steerer tube, and clean up the star washer scratches on the inside of the head-stem. This is so the air shock threaded top plug with two O rings can be unthreaded and the O rings replaced if air is lost in the air shocker.

 

[bubbabent]

Okay, seems like you are talking about an expanding fork plug, but I didn't think I would be getting involved with the Kind air shock. I guess you mean "If " It has trouble or looses air you could work on it still, correct? How little I know about some of these things, but how do you get it out drilling?

 

[super slim]

IF your air shock starts to leak, then for me replacing the 2 O Rings on the top plug, fixed the problem, but only after I greased the whole stem inside and slowly rotated the plug down the stem so the O ring did not roll!
File off any protrusions created by the star washers, then emery cloth the stem inside so it is smooth.
Lightly grease the stem inside.
The two 4 mm grub screws stop the threaded plug rotating, so remove them.
using an ?? mm Allen key and undo, and then using sideways force and still rotating slow spiral the plug up and out of the stem.
Take the plug, and the fork, to your local Hydraulic cylinder repairer for two sets of replacement O rings.
Fit the new rings using silicone grease, and re grease the stem inside.
Using the Allen key, rotate the plug LOTS as slowly pushing down in a very shallow spiral, so the O rings do not roll.
Once the plug is fully threaded into the stem install the two 4 mm grub screws so not protruding above the outside of the head stem, using loctite.
Pump the air shock up to 100 psi and apply your full body weight to the forks to get the forks to move full stroke.
Pump the air shock up to 150 psi and apply your full body weight to the forks to get the forks to move full stroke, if possible.
Submerge the fork into water and check for air leaks.
Remove , and dry all metal parts including under the rubber bellows. Apply silicone grease under the seal area.
Refit the head-stem bottom bearings and fit to the bike, using the Silvio instructions.
Install the extendable slider clamp loosely, after applying some Silicone grease.
Install the star washer???, or carbon head-stem expanding nut, and tighten down only enough to stop forward aft movement, while still being able to rotate freely.
Tighten the extendable slider clamp to ?? NM AFTER greasing the Allen bolt threads to stop binding of Aluminium on SS, and apply doudle the clamping load for the same NM of bolt torque.

The Silvio V1.0 only had a 10 mm spacer!

Check the chain for wear using a wear gauge, if the chain has done less than 2,000 km.
If more than 2,000 km, then replace the chain when adding the extra 200 mm of chain.

Happy riding

 

[bubbabent]

Thanks for all the info Super Slim, sure hope this isn't necessary now. Requested a 100 mm extension from Robert and he got back with me last night ($80 worth) and suggested that I hold off on the spacer mod until the extension is in place as that will lower the handle bars. Maybe I will try that first and see, before cutting the tube. Thanks for all the help on this folks!

 

[hurri47]

Derilleur stalk is on the bb section; so just more Chain; the derailleur cable should still work even on a 1.x. Someone with a 1.x confirm for me please.

Confirmed. When I took the extension off my 1.0 Silvio, I had to move the derailleur position down one step but didn't have to change the boom length at all, so the cable was within normal adjustability.

-Dan

 

[bubbabent]

I decided to tear the bike apart and remove the fork. I thought that I would just try to drop the 10 mm spacer so I removed what I thought was 7 mm, but was actually 7.6 mm with caliper, after the cut. I used tubing cutters and small files to smooth it out.
Maria Parker is sending me another package, the 100mm extension so that will take care of the rest. I ordered some SRAM chain and a blue cable housing with two PTFE shift cables just in case. will have to ride my Corsa for the next 5 days or so while my Silvio is undergoing modifications. I was going to mow and edge my yard today but had a swarm of bees in the back yard so I decided to cut the stem a little and call a bee keeper to come and get them.

 

[ReklinedRider]

Yikes on the bees!

 

[ratz]

Clearly this shows that my choice to outsource yard works is a wise one