Author Topic: Final fiddling threw up problems: Number 1  (Read 407 times)

Final fiddling threw up problems: Number 1
« on: May 25, 2019, 02:13:22 pm »
Part of what I thought was final fiddling was to position the seat. I set it to a position on the frame roughly as it was on my previous Giro.
A few metres down the road showed that the seat needed to go back further which puts it only 10mm from as far back as it can go because of a cable guide lug. This a small frame.

My previous Giro 20 was also a small frame and the seat was a lot further forward.


I am much the same as 11 years ago (an inch shorter but probably off the trunk rather than the legs). The cranks are 175mm.
The obvious difference is the type of seat but my mental efforts at geometry fail me and I cannot understand why the more modern Euromesh seat should be further back than the older style 'Recurve' seat.
The final fiddle ride was over quickly because other things needed fiddling - like two working brakes are better than one and the handlebar stem will not sheer while it isn't bolted up tight enough to stop it turning on the stem post.

Any thoughts on this, please?
I spoke to cycleman last night he suggested asking here after he had suggested a trailer. I haven't worked that one out yet! :D
Never knowingly under caffeinated

Re: Final fiddling threw up problems: Number 1
« Reply #1 on: May 25, 2019, 09:09:50 pm »
Get some 180 cranks made up somewhere and move the seat forward   :demon: ;D
Always happy to help you  O:-)
the slower you go the more you see

RichForrest

  • T'is I, Silverback.
Re: Final fiddling threw up problems: Number 1
« Reply #2 on: May 26, 2019, 02:05:03 pm »
The euromesh seat is designed to be more laid back than the recurve, hence the different position on the frame.
When set up you don't actually sit on it, you find more of your glutes are off the front than actually on it (IYSWIM).
To me yours looks too upright, as in the front of the seat should raise up and not be flat to the frame.
I think as you lay it back the front of the seat needs to move forward a bit. Not sure though as been so long since I set mine up!

Rich

Re: Final fiddling threw up problems: Number 1
« Reply #3 on: May 26, 2019, 02:49:27 pm »
The euromesh seat is designed to be more laid back than the recurve, hence the different position on the frame.
When set up you don't actually sit on it, you find more of your glutes are off the front than actually on it (IYSWIM).
To me yours looks too upright, as in the front of the seat should raise up and not be flat to the frame.
I think as you lay it back the front of the seat needs to move forward a bit. Not sure though as been so long since I set mine up!

Rich
Thanks Rich
That makes sense. I've deliberately pulled the seat back as vertical as I can get it (just while I get used to it - although I've never ridden laid back).

"When set up you don't actually sit on it, you find more of your glutes are off the front than actually on it (IYSWIM)."
I'd noticed that the seat doesn't support the bum cheeks.
I'll try easing it further back a bit at a time and until I get it right I will rig a temporary battery holder in one of the under seat panniers.

This will, of course, lead to problems with the stem being too long but at least they are only $40!
Regards
Never knowingly under caffeinated

Re: Final fiddling threw up problems: Number 1
« Reply #4 on: May 27, 2019, 07:14:07 pm »
The euromesh seat is designed to be more laid back than the recurve, hence the different position on the frame.
When set up you don't actually sit on it, you find more of your glutes are off the front than actually on it (IYSWIM).
To me yours looks too upright, as in the front of the seat should raise up and not be flat to the frame.
I think as you lay it back the front of the seat needs to move forward a bit. Not sure though as been so long since I set mine up!

Rich

Today proved you correct.
As the seat moves forward along the boom the pedal to back of seat distance reduces but can then be lengthened by leaving the seat where it is and lowering its back away from vertical.
Who'd have thunk that?
It is now roughly halfway between the rearmost cable lugs on the boom and slightly more laidback than I feel comfortable on. There is, however, room for adjusting the seat back towards vertical thus bending the leg or moving seat rearward to straighten the leg.

The most important bit is that the under seat rack is in a good position.
If dry tomorrow some more/final seat fiddling and then I can make a battery rack/tray.
Thanks again for your help.
Never knowingly under caffeinated